Amp Internals 2 |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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Definitely. A lot of groups I´ve seen over the last few years have come along with some friend or other as their "engineer" and I´ve lost count of the number I´ve had to remove from the desk due to their inability to distinguish between decent audio and a distorted mess of noise. "Your reasoning is similar to Microsoft. Once Microsoft introduces a new operating system, Microsoft will say anything to discredit their older version in order to convince everyone to buy their new operating system." +1 And like M-$oft, the end user is used to debug the new system, ie a lot of products are released too soon and with serious design faults. And Class AB may not be the most efficient, nor much good for very high power amps, but still has it´s place when you want something that sounds good! Edited by Earplug - 22 January 2017 at 10:59am |
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Earplugs Are For Wimps!
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nickyburnell
Old Croc Joined: 06 February 2005 Status: Offline Points: 4410 |
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I so wanted to say these exact words, but am aware I am becoming a bit of an old git in the eyes of some. So thank you |
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It's everything, not everythink!
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U.Viktor
Young Croc Joined: 04 May 2010 Status: Offline Points: 716 |
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Once low-quality heavily compressed signals played, such as " *.mp3 " the party is almost over!
However even with badly formatted input signals, still there should be significant difference in overall sound quality between properly configured and poorly designed systems. Neglecting the losses and dissipated heat , the class AB would be the best in terms of sound quality -- if properly constructed. Unfortunately sizing the AB power stage for let us say 2X of the nominal output current handling - as common in good class-D amps - with highly reactive loads would mean kind of 4X-6X chip area (dissipation per area of silicone in the output devices) which will you never see in any AB amps! Another thing is that when you see class AB amplifiers where the capacitors of power supply is separated by ~half meter cable to the amplifier stage.. Not good. All wires have some impedance and affects middle, high frequency reproduction as well as sharp pulses. |
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Elliot Thompson
Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5175 |
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Your issue is based on not having enough amperage so amplifiers with regulated power supplies are important to you. My Crown 5000vz amplifiers reside on 70A/70A dual pole breakers. The smaller Macrotechs reside on 30A breakers and, the Peavey Class D is on 50A breakers. In my case, a regulated power supply is not important to me since I don't have any issues of lack of current. The only things I have regulated are my signal processors
sitting on a California Instruments voltage regulator. I have a higher
probability of low voltage than you, since the Macrotechs are historically known to consume a lot of current to get the job done. Crown even mentions it in their manual the current required in order to get the stated wattage. Crown aimed the Macrotech for concert touring where access to current will be greater than a standard housedhold A.C. Receptacle. Best Regards, Edited by Elliot Thompson - 22 January 2017 at 12:22pm |
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Elliot Thompson
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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That´s a pretty sweeping statement. There are plenty of (old) AB amps out there with plenty of silicon in the box. How about this one: 800W Bose. These days, yes - a lot of the cheapo amps would only have 4/6 output devices per side - and 2000W on the front. |
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Earplugs Are For Wimps!
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M4trix
Registered User Joined: 23 June 2009 Location: Croatia Status: Offline Points: 445 |
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Heck, I'm living in a town (46 000 people) and in my home the mains drops down to 185V. Only after midnight it rarely reaches 220V. Especially during the winter. @Earplug, what are those strange characters in every your post --> That´s |
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Aurora
Registered User Joined: 31 July 2013 Location: Nottingham Status: Offline Points: 54 |
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Mono Links amplifier about 3000w @ 2ohm. Very deep amplifier at just over 530mm depth.
Edited by Aurora - 22 January 2017 at 3:54pm |
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U.Viktor
Young Croc Joined: 04 May 2010 Status: Offline Points: 716 |
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The Macrotech 5000VZ on 120V/70A breaker is similar like 230V/32A.
Now we are running 2x Powersoft K10 or 3x PKN XE6000 on that 32A line, vastly outperforming the single 5000VZ... |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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"@Earplug, what are those strange characters in every your post --> That´"
I don't know why that's happening, but it comes with every apostrophe I use. I wasn't sure if anyone else was seeing them as well! Now I know! EDIT: Aah, ok - so only happens with ´ and not ' - good to know. Edited by Earplug - 22 January 2017 at 5:42pm |
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Earplugs Are For Wimps!
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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What output devices does that have? It looks a lot like it'll be MOSFETs. |
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Earplugs Are For Wimps!
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Aurora
Registered User Joined: 31 July 2013 Location: Nottingham Status: Offline Points: 54 |
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I'm unsure as they are mounted upside down in the heatsink tunnel, not properly trained to take these things apart as I know the deadly current these things can hold and all that. Dated around the mid/late 90s. 1x 1/4 jack in 8x male XLR out. I have heard Links using Hitachi devices in the amps he built though, not sure what's in this one though.
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Nice to see an internal view of the Links amps,
ppls are very shy to share internals, Keith/links was a don man...rip
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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