"The" Amplifier Internals thread ...
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Category: General
Forum Name: Amp Forum
Forum Description: The 'Stopping Jake Fielder moaning constantly' forum description...
URL: https://forum.speakerplans.com/forum_posts.asp?TID=23787
Printed Date: 29 September 2023 at 2:09am
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Topic: "The" Amplifier Internals thread ...
Posted By: levyte357
Subject: "The" Amplifier Internals thread ...
Date Posted: 08 February 2009 at 2:48pm
|
Attempt to gather all the interesting amp pics into 1x thread. "Authentic" Crest Ca18 internal  Tapco Juice 2500, QSC RMX 2450, Behringer EP2500  EV P3000   Proline 2700/3000  BST Liker 1320  Soundstandard PA1.3  Crest 9001  Matrix XP3000  ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Replies:
Posted By: SteveAATW
Date Posted: 08 February 2009 at 4:08pm
MC2 E25 |
Posted By: Xmax extreme
Date Posted: 08 February 2009 at 4:31pm
LOL. nice thread lev!  i can add my china amp collections too... sorry all i can afford  LOL
------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: WhiteElephantSounds
Date Posted: 08 February 2009 at 4:41pm
    Void Inf8 mk2 |
Posted By: levyte357
Date Posted: 08 February 2009 at 4:43pm
No probs. Was searching the net for the Darq amps, as they are just rebranded Soundstandard, but Crest Enforcers must have obliterated all of that.  EDIT: Has anyone got pics of, VZ5000, 8001, Better pics of 9001 QSC 4050HD, RMX5050 PL 9.0pfc PL 6.0 pfc Powersoft K10 ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Xmax extreme wrote:Posted By: Xmax extreme
Date Posted: 08 February 2009 at 5:43pm
Ok here they are.... I will give some brief info on some models...THE HEAVY WEIGHT DIVISION This is the first edition of Soundstandard CA18, a 2 steps Class H...70volts lower rail supply and 140 volts higher rail supply.  Another CA18 look a like, but different manufacturer.... newer edition 3 steps Class H  CA20, newer edition, 3 steps Class H  MT 1500 = 1500 @ 8 ohms 2300 @ 4 ohms 4 steps Class H, 382,000 uF total filter storage  DX 9.6.... Bridge type circuitry.... 1300 @ 8 ohms 2000 @ 4 ohms  QUAD SERIES, 4 steps class H, On Semi Transistors 1800 @ 8 ohms 2700 @ 4 ohms  Another heavyweight, oversized toroidal transformer...3 steps Class H with LCD.... displays status of amp, working mode, temperature, clipping etc....  PRO series  Thats all for now....  ------------------------------------------------------------------------------------------------------------------- Lev, just found an exact replica of your "Authentic CA18"....  LIGHT WEIGHT DIVISION THE DIGITAL ERA ...  LAB FP3400, Dual Switch Mode Power Supply  THE FP 6400 wanna be...  Regulated Switch Mode Power Supply LAB FP 13000  ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: deja-ibiza
Date Posted: 08 February 2009 at 6:25pm
|
Lab Gruppen 10000Q - not the most exciting internals, but after spending 45 minutes looking for a T-8 screwdriver to open it, It's a bit different - not old skool in any way, but my current weapon of choice.
1300w x 4 Channels into 8 Ohm
2100w x 4 Channels into 4 Ohm 2500w x 4 Channels into 2 Ohm
Bridged: 4200w x 2 Channels into 8 Ohm 5000w x 2 Channels into 4 Ohm Essentially, it's 2 x FP6400 in one box.   And from underneath: (Not exciting I know, but it would have taken ages to remove the inut boards to expose the layers of construction.... so I didn't.)  |
I thought it's worth posting.Posted By: opus
Date Posted: 08 February 2009 at 6:58pm
Was just about to start a "Show us what's inside" thread but could not work out how to post my images. Anyway, got that sorted now, so here's some old school! Nice thread! Got a few of these old masters. Some with red caps some blue...don't know the difference...if any HH VX1200 
 |
Posted By: simonp1100
Date Posted: 08 February 2009 at 8:24pm
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A few internal pics of some C-Audio amplifiers i have repaired over the years, they include XR3801, SRX3801, RA3001, RA4001, SR707, Pulse 1100 & a TR850. Enjoy.
http://img14.imageshack.us/my.php?image=xr3801pics1qz6.jpg">
 http://img10.imageshack.us/my.php?image=tr850pic5gw6.jpg">
 http://img6.imageshack.us/my.php?image=tr850pic4oy5.jpg">
 http://img18.imageshack.us/my.php?image=tr850pic3ce6.jpg">  http://img7.imageshack.us/my.php?image=tr850pic2rv1.jpg">  http://img21.imageshack.us/my.php?image=ra4001top2ah7.jpg">  http://img22.imageshack.us/my.php?image=ra4001top1ok8.jpg">  http://img17.imageshack.us/my.php?image=ra4001rearvk8.jpg">  http://img14.imageshack.us/my.php?image=ra4001pcbig1.jpg">  http://img10.imageshack.us/my.php?image=ra3001pics2dz9.jpg">  http://img14.imageshack.us/my.php?image=pulse1100pic3ed9.jpg">  http://img17.imageshack.us/my.php?image=pulse1100pic4of2.jpg">  http://img22.imageshack.us/my.php?image=pulse1100pic5md5.jpg">  http://img21.imageshack.us/my.php?image=pulse1100pic6rl5.jpg">  http://img6.imageshack.us/my.php?image=ra3001pics1rf1.jpg">  http://img10.imageshack.us/my.php?image=pulse1100pic2ng4.jpg">  http://img6.imageshack.us/my.php?image=pulse1100pic1ts1.jpg">  http://img18.imageshack.us/my.php?image=image21tk9.jpg">  http://img7.imageshack.us/my.php?image=image18ww8.jpg">  http://img22.imageshack.us/my.php?image=image17yf9.jpg">  http://img10.imageshack.us/my.php?image=image12qa7.jpg">  http://img14.imageshack.us/my.php?image=image13fu8.jpg">  http://img17.imageshack.us/my.php?image=image14cr4.jpg">  http://img22.imageshack.us/my.php?image=image15tv2.jpg">  http://img21.imageshack.us/my.php?image=image16pm2.jpg">  http://img6.imageshack.us/my.php?image=image11iv6.jpg">  http://img18.imageshack.us/my.php?image=image10kr1.jpg">  http://img7.imageshack.us/my.php?image=image09cg3.jpg">  http://img22.imageshack.us/my.php?image=image08vv1.jpg">  http://img21.imageshack.us/my.php?image=image07ib1.jpg">  http://img17.imageshack.us/my.php?image=image05tt9.jpg">  http://img14.imageshack.us/my.php?image=image04by8.jpg">  http://img10.imageshack.us/my.php?image=image03tb3.jpg">  http://img6.imageshack.us/my.php?image=image02ke1.jpg">  http://img18.imageshack.us/my.php?image=image01wa5.jpg">  |
Posted By: Bespoke
Date Posted: 08 February 2009 at 8:39pm
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OPUS HD 2500/2500 Power rateings....ummmmmm more like 1800w;) http://www.slide.com/s/gl8rMsLn2T8vFtP1ridv1VW7vi4W97a6?referrer=hlnk">
 http://www.slide.com/s/kO9dXTB0wz8TcEwSLpExewF6PSEyzkbk?referrer=hlnk">
 http://www.slide.com/s/lAyt92CNwj87V8RGNwy8bxdTqqfWrKLV?referrer=hlnk">
 http://www.slide.com/s/ybUVwSZ27j_RWRED36BvtUTZ9EfHD9Qk?referrer=hlnk">  ------------- Gone |
Posted By: twinypaul
Date Posted: 08 February 2009 at 8:50pm
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ppx1200
http://img7.imageshack.us/img7/149/holiday2004grancanaria0pc2.jpg">  ------------- paul |
Posted By: twinypaul
Date Posted: 08 February 2009 at 8:53pm
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monotech q3000 http://img145.imageshack.us/img145/8340/holiday2004grancanaria1ct8.jpg"> ------------- paul |
Posted By: twinypaul
Date Posted: 08 February 2009 at 8:55pm
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monotech other side http://img161.imageshack.us/img161/9467/holiday2004grancanaria1xj2.jpg"> ------------- paul |
Posted By: cravings
Date Posted: 08 February 2009 at 9:01pm
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Mine are all smaller heh.. (well i have some xp3000s and xp1500s too...) Neither of these C-Audio ones are actually working, but here's some pics of their insides anyway: C-Audio 2600B (missing fan, should be on the right..)  C-Audio RA2000  a random little Trace Eliot PPA 300 that i have....  a random chinese amp.. LeeStar TS-1200  BKelec MXF900 / Audio Management DNA900  |
Posted By: kedwardsleisure
Date Posted: 08 February 2009 at 11:52pm
Crown MA5000VZ. Note the model number..there's no VZ5000!
 ------------- Kevin North Staffordshire |
Posted By: cnics
Date Posted: 09 February 2009 at 12:29am
Thankyou Mr Edwards. Something that really gets on my nerves that.  Digam 7000..... without its front panel also. ------------- Rob Beech - Technical Director - Cnics Audio |
Posted By: Rog
Date Posted: 09 February 2009 at 2:52am
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Cheers Jamie for putting up the Inf8 V2 pics, maybe you can edit your post and include this first time, never seen before pic. |
Posted By: Xmax extreme
Date Posted: 09 February 2009 at 3:10am
Very nice master Rog !
love the the push pull configuration of the air flow.... first time to see the infinite...------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: opus
Date Posted: 09 February 2009 at 9:11am
Got 4 of the OMP450 modules on which these are based...bomb proof, they never die!
|
Posted By: jbl_man
Date Posted: 09 February 2009 at 10:48am
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Looking at all the photos posted so far,the Lab Gruppens are to me the most beautifully designed and built,the internals are a work of art. OK here are a few old-school cheapo's.....
 HH V800.
  30 year old RSD Studiomaster 800c (rebuilt by me) ------------- Be seeing you. |
Posted By: Wrighty
Date Posted: 09 February 2009 at 2:29pm
Yamaha P5000S:     ------------- ALL YOUR BASS ARE BELONG TO US. |
Posted By: Elliot Thompson
Date Posted: 09 February 2009 at 2:46pm
Here's an old Crest Professional Series 5000 designed in 1982.
QSC EX 4000 
Crown MA 3600vz 
I would put the MA 5000vz but, it was already posted.
Best Regards, ------------- Elliot Thompson |
Posted By: levyte357
Date Posted: 09 February 2009 at 2:51pm
@Elliot, do you have internal pics of the MX3000a and MPX1200/MPA1100? Just to see if there are any layout changes. Cheers to all who have contirbuted so far. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: tweeter box
Date Posted: 09 February 2009 at 2:52pm
|
wicked thread Leyte
Mods can we have this as a sticky please ------------- PRECISION SOUND SYSTEM. Feeding the peoples needs for Roots Music. Strictly premium grade reggae and dub steppers from the early 70's to present day. |
Posted By: Elliot Thompson
Date Posted: 09 February 2009 at 3:01pm
The Schematic of the EX 4000 labels the MPX 1200 (JBL) on the same overlay sheet. The MX 3000a Schematic is exactly the same as the EX 4000. The EX 4000 came first followed by the JBL MPX 1200 then the MX 3000a. All three are exactly the same from a power persepective. Best Regards, ------------- Elliot Thompson |
Posted By: kedwardsleisure
Date Posted: 09 February 2009 at 6:18pm
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Chameleon 1U
No I havent dismantled it yet, they all look like that. 
------------- Kevin North Staffordshire |
Posted By: csg
Date Posted: 09 February 2009 at 6:18pm
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Lab gruppen 2000c built in 1993 - their first clast TD amp. was giving it its anual " deep clean" today, so took the oportunity to take some pics and staighten the front pannel out!
        |
Posted By: breakdabeat pete
Date Posted: 09 February 2009 at 6:38pm
matrix ukp1300  matrix ukp2100  ------------- ٩(̾●̮̮̃̾•̃̾)۶ |
Posted By: CHS
Date Posted: 09 February 2009 at 7:35pm
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Inside the T.Amp TA2400 MKX. (my first post, hope it works) http://img148.imagevenue.com/img.php?image=11537_100_08111_122_220lo.JPG">  http://img178.imagevenue.com/img.php?image=11557_100_08122_122_535lo.JPG">  |
Posted By: nickyburnell
Date Posted: 09 February 2009 at 8:16pm
Thats better than I thought? Tidy, big tranny.. ------------- It's everything, not everythink! |
Posted By: levyte357
Date Posted: 09 February 2009 at 8:24pm
Exactly what I thought, but only has 8x smoothing caps though. Big boys have at least 12x. Yes Caps can have different values, but from upgrade point of view 12x upgrade caps, would be better than 8x. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: Chappie
Date Posted: 10 February 2009 at 3:58pm
QSC PLX3602 alongside the board from a PL236 (from which the PLX is derived) ------------- Phill Chapman http://www.soundbydesign.net" rel="nofollow - Sound By Design / http://www.deltasound.co.uk" rel="nofollow - Delta Sound |
Posted By: technofreak
Date Posted: 11 February 2009 at 10:36am
What bothers me more is the lack of output transistors - only 8 per channel! Seems not too many for claimed 1200 W/ch @ 4 ohms... The smallest sibling, TA-450, which I happen to have, has 4 transistors per channel (and four 10000 uF caps), and is quoted as 200 W/ch @ 4 ohms. Unfortunately, I don't have a camera, so no pics, but it is very similar to TA-2400 internally - just smaller transformer and heatsinks, less caps and transistors. As for TA-2400, a guy on a local forum said that they are prone to blow output transistors if pushed hard @ 4 ohms. Fortunately, these transistors are cheap. Also, this same guy said that he has done some modifications to the amp, increasing reliability. ------------- http://www.youtube.com/watch?v=53Zq1I5_WAA - It's techno and it's freak |
Posted By: Chappie
Date Posted: 11 February 2009 at 11:05am
I would think there would be a similar compliment of them on the other side of the heatsinks. ------------- Phill Chapman http://www.soundbydesign.net" rel="nofollow - Sound By Design / http://www.deltasound.co.uk" rel="nofollow - Delta Sound |
Posted By: tallmike
Date Posted: 11 February 2009 at 12:47pm
Inside an MC1250..
 |
Posted By: Xmax extreme
Date Posted: 11 February 2009 at 5:06pm
|
Nice! fans and heatsink configuration is well designed for optimum air flow. ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: levyte357
Date Posted: 11 February 2009 at 5:11pm
I think the Proline has to earn best airflow reward. 2x Huge fans, and approx 15 trannys per channel. The guy stays cool in 4ohm bridge ... ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: adambomb
Date Posted: 11 February 2009 at 5:16pm
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yarp.. might not look as sexy internally as the C18 etc.. but it does stay cool all night. ------------- http://www.freespeakerplans.com" rel="nofollow - www.freespeakerplans.com |
Posted By: tallmike
Date Posted: 11 February 2009 at 5:16pm
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I prefer the MC750's internals - four fans next to each other! |
Posted By: Xmax extreme
Date Posted: 11 February 2009 at 5:35pm
yeah,,,good one also lev, it has bigger fans, hmmmn i think it would still compensate cause it has a bigger area to pull the air out... whereas the MC1250 has smaller area,shorter length and directly on the heatsinks... ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: levyte357
Date Posted: 11 February 2009 at 7:16pm
Nathon HI-1400 (Thanks to Rensaab).  Patrons please note, this has been measured @ over 1kW into 8 ohms, and over 2kw @ 4ohms, @ 40hz. Xmaxextreme, what is the model/manufacturer of this amp? QUAD SERIES, 4 steps class H, On Semi Transistors 1800 @ 8 ohms 2700 @ 4 ohms ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: mk2_ginger_biscuit69
Date Posted: 12 February 2009 at 12:00am
Cloud AX-6 - only a tiddler i know
   EV P2000 (and 3000 if you imagine components in the spaces on the PCBs)
     they have a nice 4x side2side fan arrangment up the middle, and of course plenty of power available
 Carlsbro powerline 500 (forgot the screwdriver, used a mallet)
   Alto Macro 2400 (ie: QSC2450/tapcojuice/ep2500) - same kind of output, but always ran much cooler than the berrys
 this is all i have hosted, many many more on my desktop which i will reassemble sometime (after a tequila shot went airbourne during my 21st).
got QSC 4050hd, 5050hd, lab 6400, lab 10k, fohnn experience3 panel mount amp, qsc 850, EV P1250, carlsbro powerline 1000, berry 1500 in use as workshop ashtray after cremating itself, audiohead ah4000, jbl mpx1200, QSC PLX 3601, and a load more i cant remember the name of.
still no NEXO D12 internals!?! I wana see how minimal the componentry actually is, ive heard theres not much in there for your dollar. ------------- ''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it'' ''Dubstep - an elongated electronic fart'' |
Posted By: GAZ.
Date Posted: 12 February 2009 at 12:25am
|
All the amplifiers here look quite clean and maintained inside. I think I have some pictures somewhere of insides of amps I have worked on that are so full of dust and dirt you cannot see the pcb's anymore! ------------- 100% Earth Moving Bass |
Posted By: jonny4288
Date Posted: 12 February 2009 at 12:33am
| would like to see insides some ffa & ecler amps |
Posted By: levyte357
Date Posted: 12 February 2009 at 12:58am
Cheers mate, 4050 & 5050hd would be nice. But just for completion, could we please have a nice centerfold of the MPX. Yes is same as MX3000a, but for old time sake. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: Xmax extreme
Date Posted: 12 February 2009 at 8:19am
this is one powerful amp lev.... here are the rail voltages of this quad series. ± 50V ±103V ±157V ±200V By the way, is the Naphon 1400 a 2 steps class H I have a very similar amps like that before including all the internals... what are the rail voltages? ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: Elliot Thompson
Date Posted: 12 February 2009 at 8:23am
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±200V That is some good power indeed!
Do they have a website? Edit: Nevermind. No Manual available 
Best Regards, ------------- Elliot Thompson |
Posted By: roborg
Date Posted: 12 February 2009 at 12:00pm
|
It'd be really good if when posting pix people could also post more info about the No. of capacitors, output transistors & ratings/values/types.. Nevertheless, really nice pix! This info could be really useful for choosing amps still in production, especially class-d's etc.. So far i have yet to see a class-d amp that wouldn't go china crisis if it were capable of delivering its inferred ratings cheers, Rob ------------- What I cannot create, I do not understand |
Posted By: levyte357
Date Posted: 12 February 2009 at 12:06pm
In my books, QSC PL6.0pfc would be the only amp to replace my CA18. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: RENSAAB
Date Posted: 13 February 2009 at 11:36am
|
QUAD SERIES, 4 steps class H, On Semi Transistors 1800 @ 8 ohms
2700 @ 4 ohms
E] this is one powerful amp lev.... here are the rail voltages of this quad series.
± 50V
±103V
±157V
±200V
 Damm!!!
With this sort of voltage swing, more efficient 16ohm drivers could soon be the way forward!
Ren ------------- "The secret of the Scoop, what a wonderful piece of Science" - Tony ASS. "when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
Posted By: levyte357
Date Posted: 13 February 2009 at 12:10pm
Yeah, problem is, it will definitely be chinese, which means not cheap any more, and by the time you've got one, the company might have gone out of business. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: RENSAAB
Date Posted: 13 February 2009 at 12:34pm
|
I think you might be right
Old school high current 2ohm (or even 1ohm) stable amps get my vote right now
 Ren ------------- "The secret of the Scoop, what a wonderful piece of Science" - Tony ASS. "when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
Posted By: Xmax extreme
Date Posted: 13 February 2009 at 12:36pm
|
Yeah, this is not an ordinary chinese amp, it's build with high quality components and uses genuine ON SEMI output transistors... not cheap anymore... ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: RENSAAB
Date Posted: 13 February 2009 at 2:07pm
Feel like the threads been hijacked
Interesting amp! I'd like to find out a bit more about it. Are specs available for this beast? ------------- "The secret of the Scoop, what a wonderful piece of Science" - Tony ASS. "when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
Posted By: mykey
Date Posted: 13 February 2009 at 2:36pm
|
my amps from the Man called Arthur G
this is the 5k 12.2
the undressing virgin stylee pics
get the tissues out
http://imageshack.us -
http://g.imageshack.us/img98/dscf0322oq3.jpg/1/">  http://imageshack.us"> http://g.imageshack.us/img13/dscf0322ww5.jpg/1/"> http://imageshack.us - http://g.imageshack.us/img186/dscf0322pm1.jpg/1/"> http://imageshack.us - http://imageshack.us">
 http://g.imageshack.us/img294/dscf0323zw7.jpg/1/"> http://g.imageshack.us/img134/dscf0323oe3.jpg/1/"> http://imageshack.us"> http://g.imageshack.us/img21/dscf0324gf6.jpg/1/"> http://imageshack.us - http://g.imageshack.us/img8/dscf0324ip0.jpg/1/"> http://imageshack.us"> http://g.imageshack.us/img5/dscf0325rq3.jpg/1/"> can you smell that newness?
http://imageshack.us">
 http://g.imageshack.us/img147/dscf0326zy5.jpg/1/"> http://imageshack.us">
 http://g.imageshack.us/img5/dscf0327oy2.jpg/1/"> http://imageshack.us"> http://g.imageshack.us/img152/dscf0328rp0.jpg/1/"> http://imageshack.us"> http://g.imageshack.us/img230/dscf0329ok5.jpg/1/"> http://imageshack.us">
 http://g.imageshack.us/img24/dscf0330rc9.jpg/1/">  loving the power leads
http://imageshack.us">  http://g.imageshack.us/img5/dscf0331lo2.jpg/1/">  ------------- ......just all them hanging there like giant bananas. |
Posted By: Elliot Thompson
Date Posted: 13 February 2009 at 2:57pm
|
The cabling looks rather thick.
Have you tested it out yet?
Best Regards, ------------- Elliot Thompson |
Posted By: mykey
Date Posted: 13 February 2009 at 3:00pm
|
yes already have a rack running for the last few months
a rack of .1's actually, will try the .2's tomorrow
just a tad over 5k i think, i'll check when i get in ------------- ......just all them hanging there like giant bananas. |
Posted By: Father-Francis
Date Posted: 13 February 2009 at 4:40pm
You lucky B´´´d Big show off  ------------- Music is the strongest form of magic.(+45 31879997)blakmanpro@gmail.com, foa@sweetboxaudio.dk |
Posted By: Xmax extreme
Date Posted: 13 February 2009 at 4:42pm
Ok here is the basic specs.. 8Ω Stereo Power = 1830W 4Ω Stereo Power = 3000W 8Ω Bridge Power = 5450W 4Ω Bridge Power = 8500W Frequency Response (+0/-0.3db 1W/8 ohm) 20Hz-20KHz(+0/-0.5dB) THD+N <0.025% S/N: 103 db Slew Rate 44V/μs DAMPING Factor : 900:1 Input sensitivity 0.775V,1V,1.4V Input impedance (bal/unbal.) 20KΩ/10KΩ Fuse: 25A Input voltage : 220V 50/60Hz Gross Weight 45 kg ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: Xmax extreme
Date Posted: 13 February 2009 at 4:44pm
|
I smell the newness myke , nice one you have there ------------- Maximum Excursion Don't criticize your own competition, it looks like a publicity of your own commercial products. |
Posted By: H...
Date Posted: 13 February 2009 at 4:47pm
| Audio Center - OEM by Tony Lee - heard some very nice things about the QC on this factory. Certainly looks the part from what Mykeys lids off pic show |
Posted By: roborg
Date Posted: 13 February 2009 at 5:22pm
That amp looks to be the greatest human creation the planet earth has yet witnessed. The manual should win all literary prizes, it even specifies the PSU capacitance, http://www.ac-pro.net/amplifierseries/da/DA_brochure_r100.pdf - http://www.ac-pro.net/amplifierseries/da/DA_brochure_r100.pdf
how much are they, how much to deliver one to the UK?
cheers,
Rob. ------------- What I cannot create, I do not understand |
Posted By: levyte357
Date Posted: 13 February 2009 at 6:44pm
Yes, but 39.5 Kilos is a bit heavy for 1.8 kwpc @ 4 ohms though guy's.  ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: roborg
Date Posted: 13 February 2009 at 6:51pm
i just like the manual, it probably weighs about 50g  ------------- What I cannot create, I do not understand |
Posted By: Rog
Date Posted: 14 February 2009 at 1:15am
|
Uummmm,
Thought you would have spotted it Lev and jumped on it by now.
The big amp with 200v rails that can do 8500 watts into 4 ohms bridge yet only has a 25 amp fuse.
I must find out how you can draw 37 amps though a 25 amp fuse. This greater that 100% effeiciency routine has really got me stumped.
|
Posted By: Rog
Date Posted: 14 February 2009 at 1:24am
|
Also,
A 4 stage output is nice, but unless its built by a company that has been going for 300 years, has an unquestioned 100% reliablity track record and is the world leader in amp technology its going to go pop very quickly. Even the PL9 got pulled and that was 4 stage with 200v top rails. If QSC can't get it right, I would laugh my ass off if a company thats been going a few years with zero R&D can pull it off.
There are not many 4 stage amps around, if any, especially with 200v rails. And for a good reason.
|
Posted By: heinrich
Date Posted: 14 February 2009 at 1:37am
nearly 2k on 8ohms.......... asa ta ug speaker ani bai ( where can we find a matching speaker for this mate) ? very grabeeeeee.....  one hell of an amp ....... ------------- .....power is nothing without control.... |
Posted By: levyte357
Date Posted: 14 February 2009 at 2:28am
They probably cost more than Crests and VZ5s by now Rog, thats why I could'nt be bothered pushing it ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: technofreak
Date Posted: 14 February 2009 at 11:16am
Yes, there is - in total 8 transistors for each channel. Anyways, here are 51 pics from a TA-2400 that was repaired by the local guy I mentioned before: http://picasaweb.google.com/MAX979/PAVoimendiTheTAmpTA2400# - http://picasaweb.google.com/MAX979/PAVoimendiTheTAmpTA2400# . The amp is taken apart to practically its elemental particles ------------- http://www.youtube.com/watch?v=53Zq1I5_WAA - It's techno and it's freak |
Posted By: roborg
Date Posted: 14 February 2009 at 4:14pm
cool pix, the transformer gives the game away with 1464VA written on the side  ------------- What I cannot create, I do not understand |
Posted By: Silas ))))))
Date Posted: 21 February 2009 at 2:03pm
Ra 3000 And the peavey 8.5c  ------------- power in the blood |
Posted By: Elliot Thompson
Date Posted: 21 February 2009 at 2:28pm
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Thanks for the Peavey photo.
I always wanted to know the difference amongst the PV 8.5 and CS 800X from an inside view. Best Regards, ------------- Elliot Thompson |
Posted By: Silas ))))))
Date Posted: 21 February 2009 at 3:02pm
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Will take one of the peavey 1.3k (2000w) when i next open it up
------------- power in the blood |
Posted By: Silas ))))))
Date Posted: 22 February 2009 at 7:27pm
The Alto Macro 2400 ------------- power in the blood |
Posted By: Elliot Thompson
Date Posted: 22 February 2009 at 9:10pm
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Should anyone really be surprised that the Alto, Behringer, Tasco and, QSC 2400 watt models all resemble one another once you remove the top cover.
Best Regards, ------------- Elliot Thompson |
Posted By: james folkes
Date Posted: 22 February 2009 at 11:24pm
the 1.3k looks just like the 8.5c only with correspondingly more/larger bits. i'm not sure why they print the 1000w x 2 on the front of that amp. whilst that is the 2 ohm rating, the manual says don't use it below 4 (650w)! whilst the lid's off so to speak, i think off-centre transformers are a very crap idea. the number of times one of those 1.3ks, a pv2000, cs1200x or any one of those poxy asymmetrical amps has caught me off-guard when lifting is no longer a point of amusement. here's one many of you will know and love... mm electronics ap360! wahoo! some of the nice things about this late 70s design (aside from the generously over-specced, totally independent power supplies) are the perfectly symmetrical weight distribution and the way you get at one channel by taking the top off and t'other by removing the bottom. i've got three now, they're still making me smile 30 years after they were made. comparable longevity might not be expected - or indeed designed for - in some modern tackle i fear... http://imageshack.us">  http://imageshack.us">  http://imageshack.us">  another one that caught my eye when i had the lid off to prod the fan the other day, was an ashley fet200. an impulse ebay purchase on the premise that crossover-builders-making-amplifiers often turns out well, that has a ludicrous four output transistors per channel for it's meagrely 100 watts and the construction is super-pimp too. i'm totally buying the sound (it mates remarkably well with my high efficiency fane co-ax boxes, delivering some really stunning articulation at worryingly high volumes), although the utterly weird mains transformer (i think it has one primary and then one secondary per channel) humms like a bloody sub station, the curse of most of the amps i try and use for the living room pa... i'll take a picture if i have the lid off again. for me, layout and heat transfer/airflow science wise, the opus hd amplifiers are pretty much the nicest and trickest i've seen: the exhaust port on a 2500 module will do you block of ice to beef bourguignon in 8 1/2 seconds... james. ------------- mardy hippy. |
Posted By: MikeHunt79
Date Posted: 23 February 2009 at 12:34am
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Those caps look really swollen on the RA3000, does it still work? Awesome thread btw, I'll put some of of a Crest amp that it think is older than me when I get a chance! When did they start making amps? ------------- I'm English, and as such I crave disappointment. I actively seek it out. |
Posted By: Silas ))))))
Date Posted: 23 February 2009 at 8:09am
The RA still works other than one channel usually overheats after 2-3 hours, don't no too much about amp internals - anything i can doo about those swollen caps?? ------------- power in the blood |
Posted By: SteveAATW
Date Posted: 23 February 2009 at 8:14am
| Yup - replace them before they finally pop and leak electrolytic all over the inside of the amp |
Posted By: csg
Date Posted: 23 February 2009 at 8:24am
| easy check - it is probably just the plastic covering bubbling up - you can remove these to check on the state of the aluminium can underneath |
Posted By: Elliot Thompson
Date Posted: 23 February 2009 at 1:04pm
The reason behind this is to meet UL Requirements. Under 2-ohm per channel, the amplifier will not meet UL's criteria for it gets too hot. Peavey had to put 4 ohms minimum in stereo mode or you would not have one at your disposal. Here is a Peavey CS 400 (late 80's) amplifier. I don't own any CS 400s so, I cannot go into great detail on the components inside this amplifier. It is 200 watts per channel @ 4 ohms if I remember correctly. 
Best Regards, ------------- Elliot Thompson |
Posted By: MikeHunt79
Date Posted: 23 February 2009 at 1:52pm
You really need to replace them all. Not a hard task soldering wise but you'll have to remove the PCB's. I've found the main culprit with amps 10+ years old tends to be the caps going... Old swollen up cap from an old numark amp (SA 3000):  I've now put some nice shiney new ones in and the amp works again.  ------------- I'm English, and as such I crave disappointment. I actively seek it out. |
Posted By: Silas ))))))
Date Posted: 23 February 2009 at 7:07pm
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Ah cheers for the info mike, will get on the case. Will have to see if its just the plastic or the caps, i reckon its most likely the caps. Where do you source them? ------------- power in the blood |
Posted By: csg
Date Posted: 23 February 2009 at 8:07pm
| rs, farnell, cpc etc |
Posted By: csg
Date Posted: 23 February 2009 at 8:08pm
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oh, and stick to the same voltage / capacitance -increase the capacitance significantly and you may damage the bridge rectifier |
Posted By: Silas ))))))
Date Posted: 23 February 2009 at 8:24pm
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cheers for the info, just started a new thread, checked and its only the plastic casing not the caps themselves http://www.speakerplans.com/forum/forum_posts.asp?TID=24318 ------------- power in the blood |
Posted By: Silas ))))))
Date Posted: 23 February 2009 at 8:55pm
As promised, not that interesting but someone might find it useful - The peavey 1.3k (despite its rep, its never ever let me down yet.... and its been far from looked after) ------------- power in the blood |
Posted By: Elliot Thompson
Date Posted: 23 February 2009 at 9:50pm
|
Thanks!
I found these by the rubbish bin last year. 
They are Soundcraftsmen PCR 800s and are in working order.
Best Regards, ------------- Elliot Thompson |
Posted By: Elliot Thompson
Date Posted: 23 February 2009 at 10:08pm
Here is a BGW 750. It offers the same guts as the Peavey CS 800.
Best Regards, ------------- Elliot Thompson |
Posted By: levyte357
Date Posted: 24 February 2009 at 4:20pm
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Can someone/Andy please put up internal pic of the original Matrix STR3000, with its beautiful 'NAD' looking case. The one put up earlier is the XP3000. ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: mk2_ginger_biscuit69
Date Posted: 24 February 2009 at 10:50pm
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DB Opera active 400 cabinet, biamp module. the bass cone has a feedback circuit coming off it too PCB which is interesting, some kind of protection circuit im guessing. sorry i havnt a better picture, was repairing a comp driver and couldnt be bothered to unscrew it. nice sized heatsink to keep it cool however. very reliable
 ------------- ''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it'' ''Dubstep - an elongated electronic fart'' |
Posted By: csg
Date Posted: 25 February 2009 at 6:55pm
HH electronic m900 - the install version of the v800, one of my favorite amps of all time 
|
Posted By: kedwardsleisure
Date Posted: 26 February 2009 at 9:57pm
Warrior / W-Audio DA1300
------------- Kevin North Staffordshire |
Posted By: opus
Date Posted: 27 February 2009 at 7:34am
| Has anyone disected a KAM KRX2000 yet? |
Posted By: Kaizen
Date Posted: 28 February 2009 at 6:10pm
  QSC MX 3000a  QSC MX 2000a   BK MF1000 - *Proper* torroid on this and massive capacitors to go with it, not so sure about the cooling arrangement.  C-Mark MR2650 Since the transformer on the BK wasn't fastened down it makes it easy to do a direct comparison between this and the transformer in the C-Mark.  The C-Mark's is slightly wider, but the BK is deeper so I think overall there's not much in it. Bear in mind BK rate their amp at 1050 watts into 2R (it's a single channel amp) and C-Mark 2.4K into 8R bridge. Ok the BK costs a fair bit more per watt, but I think someone is exaggerating a little on their spec sheet The C-Mark is fine for mid tops (although the MX3000 sounds a fair bit 'cleaner' in a direct comparison) but you can't expect it to give a 2.4k bass bin the kick up the arse it would need on heavy basslines.  An embarrassingly mucky HH VX-900, not had chance to try this yet since I picked it up but looks nicely built and has a decent torroid for it's 900w rating.  Alesis RA300 - pretty well built, great for home audio because it's passively cooled. |
Posted By: andyamp
Date Posted: 28 February 2009 at 7:03pm
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Hi Kaizen how big a toridal transformer is can be deceptive as the output power per KG can me as much 30% different. so a transformer can deliver as much power as one that is 30% bigger if the smaller transformer is built from better material and of a better design. the Top transformer looks like a western made transformer and the bottom one looks chinese. the top unit has much thicker wire on it,and the windings are very good(unlikely to be chinese) but the bottom one may be bifila. My money will be on the top one i would guess it will put out 15% more power than the bottom one, but testing it would tell. that is what i see in the picture and the alesis uses an Ecore transformer. toy ------------- a wise man changes his mind a fool does not. http://www.matrixamplification.com/ - http://www.matrixamplification.com/ |
Posted By: Kaizen
Date Posted: 28 February 2009 at 8:30pm
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Yes admittedly my comparison was highly unscientific! The BK really does put the C-Mark to shame though, if we believe the label on the BK and say it's 1kw, C-Mark have put an 850w transformer in an amp specced for 2.4kw (assuming 15% less), o dear. Comparing the size of capacitors might also be a bit misleading, i'm sure i've read somewhere that the voltage they run at is just as important as their capacity? I was a bit dissappointed when I first saw that transformer in the Alesis, not bad for a fiver off ebay though! Just needs a new gain pot. In case anyone was also wondering what the benefit of a torroidal transformer is this http://www.plitron.com/advantages.asp - this link seems pretty good. |
Posted By: andyamp
Date Posted: 28 February 2009 at 9:02pm
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i know them. the only thing that's not true is low mechanical hum. i have used a lot of toridals and most that people make are junk. so i do my own some people that make toridals cannot resist using cheper matereals ------------- a wise man changes his mind a fool does not. http://www.matrixamplification.com/ - http://www.matrixamplification.com/ |
Posted By: Kaizen
Date Posted: 28 February 2009 at 9:50pm
This is why accountants should never help design amplifiers! Is lower mechanical hum not true for all torroidals, or just if they're made more cheaply/poorer design? I take it you'll be continuing the philosophy of using high quality materials with your switched mode PSUs.. Do you believe a PSU should be able to provide the (RMS) rated output of the amp continuously, as BK appear to, or is it unnoticable during capacitor draining basslines if it's only capable of a specific duty cycle? |
Posted By: nickyburnell
Date Posted: 28 February 2009 at 10:36pm
Got one here. Will do tomorrow. ------------- It's everything, not everythink! |