USB2
Printed From: Speakerplans.com
Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
URL: https://forum.speakerplans.com/forum_posts.asp?TID=15616
Printed Date: 27 March 2026 at 8:45am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: USB2
Posted By: davey t
Subject: USB2
Date Posted: 23 March 2008 at 4:55pm
Been working on this for a while and i finally finished a plan last week i was happy with. So we knocked up the first prototype and tested it.  Not sure if the world NEEDS annother bass bin design, but this one seems a goodun. I looked at all the other bandpass horns, especially fk1 and from past experience with the usb and dsub, i think i have a fair idea on what makes these things work and how to get them to play low. It was designed in CAD which was really good for making sure everything fits and calculating all the volumes. Its a single 18", 75x75x50cm box. The design principle is nothing new, its still a bandpass horn, but inside it doesn't look the same as any other i know of! here is a response plot... http://img119.imageshack.us/img119/8186/usb21w1mfi1.png - http://img119.imageshack.us/img119/8186/usb21w1mfi1.p BLue is USB2, yellow is a HD15. I'm not 100% sure about my SPL calibrations so thats why i put the hd15 in using the same gain settings etc to give a reference to get an idea of efficiency. They were measured in the middle of my garden with pink noise. 2.8v Av on my true rms meter with the mic 1m away. Next step is to build 4 and rinse them at a club. This is the real test! but it all looks really good so far..  |
Replies:
Posted By: davey t
Date Posted: 23 March 2008 at 5:04pm
 1w0m. the mic is right infront of the speaker in the middle of the horn mouth. Blue is USB2 again.. |
Posted By: da_audio_don
Date Posted: 23 March 2008 at 5:06pm
| Was it an easy build? |
Posted By: da_audio_don
Date Posted: 23 March 2008 at 5:07pm
| your design looks like it would go pretty low in multiples. I look forward to hearing what you have to say about how a stack of four sounds like. |
Posted By: Jhodas
Date Posted: 23 March 2008 at 5:10pm
+1 ------------- Until the Lions have their own historians, tales of hunting will always glorify the hunter. |
da_audio_don wrote:Posted By: Tekasis
Date Posted: 23 March 2008 at 5:11pm
Never too much. Looking good.
 ------------- **Heavy Weight-Line** A home without books is like a body with no soul. |
Posted By: james folkes
Date Posted: 23 March 2008 at 5:13pm
|
the world will always need new bass bins... keep 'em coming mr trotter, you're a machine! the curved mouth brace is a nice touch, makes them look a little different on the outside too. the plot is enviable, very solid to 40 in free space from such a tiny box, it's only a shade bigger than an f118 but looks a bit more real world friendly on its own. really well done, and keep us posted of course!
james. ------------- mardy hippy. |
Posted By: davey t
Date Posted: 23 March 2008 at 6:01pm
| Easy build? Well, they're more complicated than original usbs, but i went for best sound and a slightly more complicated design. There are 3 of us building the prototype from scratch on friday n we did it in about 4-5 hours. |
Posted By: Timebomb
Date Posted: 23 March 2008 at 7:11pm
|
Like nice im liking the brace too, i take it from the cable hanging out the driver is reverse mounted?
------------- James Secker facebook.com/soundgearuk James@soundgear.co.uk www.soundgear.co.uk |
Posted By: MarjanM
Date Posted: 23 March 2008 at 7:24pm
|
Are you planing to share the plans? ------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: Tony Insanity
Date Posted: 23 March 2008 at 9:27pm
+1, got my saw & router at the ready and have nothing better to do! ------------- .....you might also look for her companion, a large Chinese rabbit, who is easy to spot since he is only standing on his hind feet in the shade of a cinnamon tree... |
Posted By: mylesound
Date Posted: 24 March 2008 at 3:08pm
| if they go low in multiples id def. be intrested |
Posted By: davey t
Date Posted: 24 March 2008 at 8:07pm
|
hmm, i got to think long n hard bout what to do with the plans. First ting is to do proper testing in multiples... My friends want to start building and selling them... but i'd like people all over the world to be able to make their own. Would people be against me sellin the plans/licence for a small amount like Bill Fitz? It all depends on how they perform, but i'm quite excited at the mo.. |
Posted By: Disco Stu
Date Posted: 24 March 2008 at 8:14pm
|
Davey I think you have the talent to design great subs, and why not sell them for £10 per plan, providing the plans are as detailed. Might give Bill some competition.
Coming up with good mids and tops is IMO the more difficult problem! Stu ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
Posted By: mylesound
Date Posted: 24 March 2008 at 9:04pm
|
I was planning on buying a couple of bill's plans but im not too sure i like his tops. if im paying for plans i want subs and tops to match eachother, in size and output.
gives the stack a more professional look IMO. got any top end in mind? |
Posted By: Tony Insanity
Date Posted: 24 March 2008 at 9:33pm
If they are anywhere near as good as USB 1's then I would pay for the plans, no question! ------------- .....you might also look for her companion, a large Chinese rabbit, who is easy to spot since he is only standing on his hind feet in the shade of a cinnamon tree... |
Posted By: davey t
Date Posted: 24 March 2008 at 9:36pm
|
Personally the only tops i would ever design or build would be a unity-style horn or well deisgned fiberglass horns with phase bungs etc. The first is patented by tom so i would probably run into trouble selling my designs based around his idea. The second is too difficult for people to do themselves and too much work for me to produce them though i'm thinkin about trying. so this is the problem. 50cm is the same width as most tops. You could cross the usb2 over at anything from 80-150hz i recon. So you have a lot of options. (xtro, mt212, fk1, etc etc) Haven't heard Bills tops but his bass are good but really complicated to build. I prefer to spend more a good 18" driver and less time on building the enclosure. If you add up your time and how much its worth... |
Posted By: mylesound
Date Posted: 24 March 2008 at 10:02pm
|
I guess the MT212 would be a good efficent top end since this goes up fairly high.
just to see now how low it can go in a stack. cant wait for the results! |
Posted By: Disco Stu
Date Posted: 24 March 2008 at 11:27pm
What tops of his dont you like, I have the OT12s, from what I have heard so far and the comments I have received from my other cab the O10.5 for keyboards, I am very satisfied with their output. The benefits are that the woofer section goes lower and higher in frequency response than the MT122, with a couple of dB less output, but I can cope with that, bandwidth is more important to me. For my tastes the DRs are too large and square and awkward to stack or pole mount, but otherwise I would probably use them. Stu ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
Posted By: mylesound
Date Posted: 24 March 2008 at 11:42pm
|
Im not to fond of the multiple peizos in his bigger tops, * and i do want that extra output. i guess im just used to the 2" CD sound, i get the B&C drivers for stupid cheap
the dr300 looks rather complcated to build too =x but im really intrested in his tubas. i havent heard any, or seen any. and there arent much reviews on it. (that i have found) |
Posted By: Bespoke
Date Posted: 25 March 2008 at 4:21am
Whats the point selling the plans ''per person'' ? As soon as someone has them they would be on the internet within a week. You could sell the plans to a good builder but people will still copy them. Problem is the box uses an off the shelf driver so its only going to take someone to buy 1 cabinet then copy and sell it. Its a hard one i wouldn't know what to do . Good luck mate
By the way i got some USB's the other week and WOO perfect ! All loaded with PD186 and they do go ''low'' when you use a loads of them  ------------- Gone |
Posted By: davey t
Date Posted: 25 March 2008 at 9:11am
|
Yea, its tricky. I think Bill does ok because he sell his plans so cheap its hardly worth the effort of obtaining a copied one for free. I'm sure people do but the majority just buy then (i did!). Things which could make it work: 1) Printing and posting the designs to people which would definately make them harder to share although its a bit more effort on my part. 2) a very reasonable price. i.e £20 or £10 3) Having lots of friend n contacts in the industry, i would quickly find out if anyone was using/copying/spreading the plans without my permission 4) Register it as a copyrighted design. There is a lot of protection offered by copyright laws which can be used for large scale infringement. Still, the main thing is to build more, get peoples opinions and see how good they are. The USB is proving quite popular of late n this prototype bin sounds better n goes lower. |
Posted By: davey t
Date Posted: 25 March 2008 at 9:18am
| the other option of course is to design a custom driver for it (eminence do these, 50pc min). This would make it sound even better too. |
Posted By: Jake_Fielder
Date Posted: 25 March 2008 at 9:29am
|
I think it has to work on respect, hopefully people have enough respect to shell out a tenner rather than try and obtain a copy.
Also if you can offer a service like answering questions about your design once someones payed you then people would be stupid not to pay you.
(irrelevent question: why did you call it a USB? "U*** sub bass?" what does it stand for?
|
Posted By: toastyghost
Date Posted: 25 March 2008 at 12:40pm
|
I always thought the USB name came from the 'united sounds of Bristol' mailing list? One thing regarding plans is that BFM only actually charges just over a fiver to £7.50 for plans at the current exchange rate. Having a price below a tenner does a lot psychologically and might make people more willing to pay, despite being a little more awkward to account for. Also, regarding the plans being copied and shared there is little you can do about this. If you only send out plans on paper, you only impact the people who legitimately buy the plans, not those who'd copy and share them - the paper would only be scanned in and then those sharing the plans would have a more convenient version than those who buy them. Copyright litigation is also very expensive and time consuming. I think it'd be best to copyright the plans, via the traditional channels and then sell them on a respect basis as already has been mentioned. People will always copy something if they wish, and by trying to prevent them doing so you only usually hurt the honest customers. The music and publishing industries are just starting to realise this. I think you'll go a long way though by having licensed builders, who pay a higher charge (say fifty quid) than others but are then able to legally build an unlimited amount for those of us who find saws and routers a scary prospect. |
Posted By: davey t
Date Posted: 25 March 2008 at 3:13pm
|
You right on many points. Electronic versions of the plans are best Charging a very small amount for plans for DIYers who want to build some for their own use is ok and shouldn't result in too much copying Charging a small licence fee to builders who can then freely advertise the product and build unlimited amounts should also be ok Re the copyright litigation: Registering the plans with the copyright office costs £35 and only requires filling out a form and emailing a copy. Its just there to scare people off infriging. I would never bother taking someone to court unless they were making top dollar from my design - unlikely! I'l just be happy if it turns out to be a wicked design and lots of people make them. If i can make a couple squids from it then bonus! and it'l provide encouragement to do more. anyways, i'm getting ahead of myself. The proof of the pudding is in the eating. I've only built 1 and need to do some proper testing with different drivers and more bins at higher volumes. |
Posted By: Jake_Fielder
Date Posted: 25 March 2008 at 4:24pm
|
That sounds like the right approach.
best of luck.
|
Posted By: Dom
Date Posted: 25 March 2008 at 6:16pm
|
Considering that in general people aren't prepared to spend money on decent plywood or decent components I have to wonder whether the same people would spend money on plans... ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: toastyghost
Date Posted: 25 March 2008 at 7:05pm
But then you have to wonder if you really want to compromise your plans to draw in the lowest-common-denominator market. Why not do the best job you can and get paid a decent amount by those who appreciate the work, rather than just trying to appease tight arses of the world? Plus there are plenty of free plans out there already, that do a similar job in a different way. If 'free' is your biggest factor when choosing something, then you're generally going to accept something of a lower quality in return. You certainly won't get rich quick that way, but you will feel a lot better all around! Anyway, as Davey says this is all a bit business like at this stage! Four bins and plots, or preferably a party based public unveiling if you could please 
|
Posted By: davey t
Date Posted: 25 March 2008 at 8:04pm
Innit just. Two cut n ready to assemble this week. Have modified the brace to make the crosspiece "chevron" style. the curved brace is infact the secret of the design. Inside its just an empty box. looking into CNCing a run of 16-24 bins at the moment. birch is fukin expensive at the moment! |
Posted By: FarmerWardy
Date Posted: 25 March 2008 at 9:38pm
i saw the design, in Alex's living room, all be it scribbled on a bit of paper. |
Posted By: Jake_Fielder
Date Posted: 25 March 2008 at 9:52pm
haha, i was waiting for a picture to load in the gap! 
|
Posted By: davey t
Date Posted: 25 March 2008 at 9:54pm
|
Shhhhhhh! I shouldn't leave my scribbles lying around. It turned out different to that scribble anyways. |
Posted By: tb_mike
Date Posted: 25 March 2008 at 10:26pm
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I think if the plans are comprehensive enough,and if you have some kind of basic pre/post build support that would be good. Also developing a few more related products could help it grow. Ofcourse some will copy, but its better than nothing. |
Posted By: Bespoke
Date Posted: 26 March 2008 at 1:55am
|
If there anything like the USB then i'll have 8 of them ------------- Gone |
Posted By: nickyburnell
Date Posted: 26 March 2008 at 9:00am
Universal Sound Bus------------- It's everything, not everythink! |
Posted By: davey t
Date Posted: 26 March 2008 at 11:58am
|
USB originally stood for united systems of bristol, cos the idea was for everyone to use the same bass for linkups. that didn't happen. Now its just an easy to remember catchy name. It can stand for whatever you like. Ultra Sick Bass Upsidedown Speaker Bin unkle sub bass universal sound bus is also good. (un)usual sounding box ultra silly boys how about the guy who comes out with the best wins the plans? |
Posted By: davey t
Date Posted: 26 March 2008 at 11:59am
| Hey, bespoke. how you finding your USBs? I saw the pictures. very sexy! |
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 12:03pm
| united states of BASS |
Posted By: jethrocker
Date Posted: 26 March 2008 at 12:51pm
| Ultimate Sound/Sub Bombardment |
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 12:53pm
| un-sanitary bathroom.....? |
Posted By: snowflake
Date Posted: 26 March 2008 at 1:13pm
so davey, the USB2 tests better than your tapped horns? fancy doing some more measurements this weekend if I can get a cab over to yours? (weather permitting) 
|
Posted By: boycey
Date Posted: 26 March 2008 at 1:22pm
|
Uncontrollable Slobbering Beast?
------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
Posted By: jethrocker
Date Posted: 26 March 2008 at 1:23pm
| Unmistakeabley Solid Bass |
Posted By: davey t
Date Posted: 26 March 2008 at 1:57pm
|
ooh, there are some gooduns there! Yea, the usb2 beats the tapped horn in sound and efficiency so far. The tapped goes lower and has a rediculously flat response mind, so i still love it, its just not loud enough. I think its forcast to piss it down this weekend :( |
Posted By: Richard Hart
Date Posted: 26 March 2008 at 2:02pm
| Utterly Satisfying Bass or Bin? |
Posted By: Bespoke
Date Posted: 26 March 2008 at 2:10pm
Hello Davey T... the man with the plan(s)
Well as you might already know i have/use Opus audio system's which i supply to for all sorts of events but mainly Drum&bass. why i dont know
Anyway to the point - My Opus system sounds lovely, perfect BUT i needed somesort of cabinet with a hard kick to it that still played low. Answer your USB !
Have 8 USB's all loaded with PD186 and as i have said before they do go very low
They work alot better laying on there side rather than standing up. Somehow they play alot lower when stacked up on there sides ? ? ?
I have now sold all my Opus SB218's NOT because they are bad or sh*t but because they didnt have that ''kick'' i needed for the type of events i do.
Still use and swear all the Opus amps, crossovers, mid-highs etc etc but i must say the USB's are something quite special
 Another 8 USB's and i'll be happy ------------- Gone |
Posted By: davey t
Date Posted: 26 March 2008 at 5:03pm
| wow, id love to hear 8 loaded with pd186s. Where bouts are your gigs? |
Posted By: jethrocker
Date Posted: 26 March 2008 at 7:23pm
|
How many people do you cover with 8 usbs more or less, and what mid hi sections are you using (seem to remember seeing pics with FK1 but interested in quantity)?? Thanks. Unmistakeabley (not) Sound Blaster, Ubiquitous Sub Box, Ultra Sonic Boom... |
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 7:41pm
|
unneccesarily strong bass
unreasonably severe bass
unbelivable shocking bass
|
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 7:42pm
|
ultra sonic boom is the best easily....
i asked my girlfriend what she thought and she said "ultra stupid bollocks" ..... she doesnt like my speaker obsesion...
|
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 7:43pm
| ultra seismic blast |
Posted By: jethrocker
Date Posted: 26 March 2008 at 8:22pm
Looks like just you and me taking this contest seriously Jake.. I want those plans so I can put them into mass production and sell them to everyone on the forum behind Daves back Uber Sub Behemoth?? |
Posted By: biotec
Date Posted: 26 March 2008 at 8:36pm
|
utterly smashing boxes ------------- me so horny, me love you long throw. |
Posted By: MarjanM
Date Posted: 26 March 2008 at 8:39pm
|
Everything ULTRA is a trade mark of Behringer :-) So try something different :-) ------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: rich, ind.st
Date Posted: 26 March 2008 at 8:57pm
|
uber splendid bass
------------- music is god |
Posted By: rich, ind.st
Date Posted: 26 March 2008 at 8:58pm
|
or maybe uber speedy bass
------------- music is god |
Posted By: davey t
Date Posted: 26 March 2008 at 9:08pm
| Utterly smashing bass |
Posted By: jethrocker
Date Posted: 26 March 2008 at 9:22pm
| Upstart Sound Banisher... (One for the clash possee) |
Posted By: jethrocker
Date Posted: 26 March 2008 at 9:24pm
| Undermining Structures Badly.. |
Posted By: MarjanM
Date Posted: 26 March 2008 at 9:29pm
United Sub Bastards 
------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: Bespoke
Date Posted: 26 March 2008 at 9:52pm
Thanks, work alot in Reading and in and around London. Also supply a number of festivals thoughout the year  ------------- Gone |
Posted By: Bespoke
Date Posted: 26 March 2008 at 10:01pm
|
[QUOTE=jethrocker] How many people do you cover with 8 usbs more or less, and what mid hi sections are you using (seem to remember seeing pics with FK1 but interested in quantity)?? Thanks. I use 8 USB's for events up too about 400 poeple, I use Opus CS750 mid-high's or the BIG boy Opus CS1200 / 2 / 3 or 4 aside depending on size and type of event. Dont use or have any F1 sorry ------------- Gone |
Posted By: davey t
Date Posted: 26 March 2008 at 10:29pm
 My mates are well on the way to finishing numbers 2 and 3. the brace has changed. the chevrons add 3db to the visual output. usb = U Suck Balls |
Posted By: fuzzylogic
Date Posted: 26 March 2008 at 10:29pm
|
Ultimately Saturated Bass Undenyably Soiled Briefs U Silly Boy
Lookin' fookin' lush by the way  ------------- NEIGHBOURHOOD SOUNDSYSTEM Infinitely baffled. |
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 11:02pm
| until something better? haha, kidding. |
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 11:05pm
|
haha this game has really taken off, i was out playing ping-pong!!
Utterly sic bass
Unintentional slip of bowels (brown note!)
Jake_Fielder U Sad Bastard
|
Posted By: fuzzylogic
Date Posted: 26 March 2008 at 11:18pm
U Should Buyanewtapemeasurethereisabitofagap  ------------- NEIGHBOURHOOD SOUNDSYSTEM Infinitely baffled. |
Posted By: jethrocker
Date Posted: 26 March 2008 at 11:19pm
|
|
Posted By: Jake_Fielder
Date Posted: 26 March 2008 at 11:23pm
|
hahaha
Its that back panel on the top one, it looks a little too wide!
|
Posted By: jethrocker
Date Posted: 26 March 2008 at 11:42pm
| Undefeatable Sound Bwoys... |
Posted By: MarjanM
Date Posted: 27 March 2008 at 1:41am
|
Ugly Sonofa B**h
------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: davey t
Date Posted: 27 March 2008 at 9:48am
|
classics Urm, that back panel isn't screwed n glued yet. They were just seeing what they looked like stacked up. I like Untill Something Better |
Posted By: fuzzylogic
Date Posted: 27 March 2008 at 10:33am
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That should be: Urm, Screwed Backpanelnot. ------------- NEIGHBOURHOOD SOUNDSYSTEM Infinitely baffled. |
Posted By: Jake_Fielder
Date Posted: 27 March 2008 at 12:04pm
| Unless Someone Buystheplansthenpoststhemeverywhere,you'llbealright. |
Posted By: snowflake
Date Posted: 27 March 2008 at 1:25pm
I am a little surprised by that - must do a side by side with mine. I never thought your choice of driver was right in the tapped horns... is it worth doing indoor measurements at my mates warehouse? or would you be free tonight???
|
Posted By: davey t
Date Posted: 27 March 2008 at 2:47pm
|
"The Tapped horn is only useful when a conventional horn is enough
smaller than ideal to have large peaks and dips. When size is no
object, a regular horn can be made to be more efficient." In short, tapped horns are wicked in small numbers but offer no advantage over normal horns in stacks. I recon simple short bandpass horns are the beez neez. They seem to defy horn theory physics on how low they go yet are still really efficient and have a great sound |
Posted By: mylesound
Date Posted: 27 March 2008 at 3:22pm
TSW 721 bandpass horn or not? they do sound amazing and i cant quite tell what they are. |
Posted By: adambomb
Date Posted: 27 March 2008 at 4:11pm
yup.. TSW721 is a band pass horn.. a big one.
 ------------- http://www.freespeakerplans.com" rel="nofollow - www.freespeakerplans.com |
Posted By: davey t
Date Posted: 27 March 2008 at 5:05pm
| You'l find that the majority of the bandpass horns around were designed by good old tony andrews. Including the original festival bins. |
Posted By: davey t
Date Posted: 27 March 2008 at 5:07pm
|
BTW I had a look inside the new FK1 221 bins tother day. looks EXACTLY the same as the USB1 (reversed driver etc), just a 21" version which is much louder and goes much lower.. |
Posted By: snowflake
Date Posted: 27 March 2008 at 6:46pm
i think tapped horns can beat bandpass horns with better group delay and less distortion |
Posted By: james folkes
Date Posted: 27 March 2008 at 7:47pm
|
useful speaker box...
i'm very interested in the phase and group delay characteristics of the th115, now that defies the laws of physics... still not gotten around to building an apache, it's on the list, but only when i've built boxes for everything else i've got knocking around. which is quite a few... my festool is hungry for action. i still can't wait to see the plots for a stack of four usb2 though. james. ------------- mardy hippy. |
Posted By: mylesound
Date Posted: 27 March 2008 at 7:56pm
|
ive never heard any tapped horns so i cant say. but im used to the sound of the 721
why is it that 6 721's a side can screw up my vision and shake around my clothes at 10M and the X1 spl drops off so quickly if they are both bandpass? im really intrested in the x1 but afriad they will not be enough for my outdoor uses. |
Posted By: adambomb
Date Posted: 27 March 2008 at 9:54pm
|
Can you imagine what would happen if danley and andrews got together and had a good brain storming session!
I'd say BPH are more effiecent than plain bandpass.. hence the difference in SPL at distance (they seam to be much more directional too - hence more SPL in the direction of the crowd).
The horn element of the design adds more effiecency..
You might be suprised by the throw of X1s outdoors... might be even better with some kinda "infrahorn" attachment. ------------- http://www.freespeakerplans.com" rel="nofollow - www.freespeakerplans.com |
Posted By: Bespoke
Date Posted: 28 March 2008 at 1:46am
Maybe someone can help here ? ? ? Just put 4 USBs into a small club as a ''bass upgrade'' but you couldn't even tell that they were on  
Turned 2 off still no difference then turned them on there side STILL no difference then gave up !! What what going on there then ? ? ?
Cabinets were about 8 meters from the other wall and the sides walls were about 5 meters away but open
Will they onlt work in big venues ? It the first time i have tryed them in a small venue ------------- Gone |
Posted By: Jake_Fielder
Date Posted: 28 March 2008 at 8:07am
|
Definately make sure they're all wired the correct way round. they're supposed to be wired 180 degree phase shifted (red to - black to +)
did you try one on its own?
were they all made by the same person?
could you actually feel air moving out of the ports?
EDIT: haha for some reason i thought i was answering a question about X1s!!!!
It still kinda makes sense though, for ports read horn!!!!
|
Posted By: fuzzylogic
Date Posted: 28 March 2008 at 9:58am
|
United States of Bass.
Are you saying X1's also should be wired out of phase to the rest of the rig Jake? ------------- NEIGHBOURHOOD SOUNDSYSTEM Infinitely baffled. |
Posted By: Disco Stu
Date Posted: 28 March 2008 at 11:24am
|
Depending on how many cabs you had in there already 4 cabs may or may not make a lot of difference - you need to double your cab count for a theoretical 6dB increase so if you already had 8 in there, 4 will give you only 3dB more
It may also be to do with placement - room modes may be ripping out your sub at different frequencies especially if the stack is horizontally aligned Stu ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
Posted By: Jake_Fielder
Date Posted: 28 March 2008 at 11:30am
I already said that!!
Read point 10
http://www.speakerplans.com/index.php?id=guide3 - http://www.speakerplans.com/index.php?id=guide3
|
Posted By: fuzzylogic
Date Posted: 28 March 2008 at 7:12pm
|
Aaargh!I'm losing it,short term memory loss increasing.I've read that before and forgotten it! I've read that before and forgotten it.
Sorry dude,I wrote that after reading the bit with the guy wearing the stars and stripes trousers! .Man I remembered to set the phase at 180 on my fds 360's for the first couple of gigs last year,must check it's still set
Fuzzy by name..... ------------- NEIGHBOURHOOD SOUNDSYSTEM Infinitely baffled. |
Posted By: login4
Date Posted: 31 March 2008 at 12:41am
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anymore news, this is getting interesting?
------------- CELTIC SUBSONIC SOUND SYSTEMS |
Posted By: davey t
Date Posted: 31 March 2008 at 9:19am
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The other two ply ones are built. I'l post some pics later maybe. They look VERY sexy. Gona load em and fire up some time this week. |
Posted By: jethrocker
Date Posted: 31 March 2008 at 9:42pm
| Keep us posted... any decision on the plans yet?? |
Posted By: FarmerWardy
Date Posted: 01 April 2008 at 12:57pm
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dave if you still want that spare beyma g550 to see what it sounds like compared to other drivers il sure i can drop it off some time soon. oh and for any people who want the design...dave showed me the internals on his camera fone the weekend just gone, and it looks very ummm...different. not what i would have expected in there. |
Posted By: davey t
Date Posted: 05 April 2008 at 10:14pm
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just took the two new birch ply ones out for a spin at the club. Wacked up the volume and rinsed a load of tunes. IMPRESSIVE! loads of output. really nice deep bass. plenty of sub. bit louder on the upper bass, then i crossed em at 100hz with a 12db/dec and it evened out nicely. winner! right - need to get more now.... here's a pink noise response plot taken with the bins lying in the middle of the room with the volume turned right up.. (spl levels weren't calibrated, but you can see the response/roll offs) 
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Posted By: hifiger
Date Posted: 05 April 2008 at 11:40pm
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wow! It looks like it will smooth out real nice with more cabs. |
Posted By: bigbadbass
Date Posted: 06 April 2008 at 12:00am
| basically all round one way bass cab? |
Posted By: jethrocker
Date Posted: 06 April 2008 at 12:12am
Just what I was about to say... nice even 107dB with 4 cabs I reckon, from about 40 to 120.. |
Posted By: Disco Stu
Date Posted: 06 April 2008 at 2:10am
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That is indeed a feckin winner, now all you need is a 1W/1M SPL test and you are ready for production!
Stu ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |