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Amp Camp Amp #1
Amp Camp Amp #1
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Old 28th July 2016, 08:24 PM   #41
ta240 is offline ta240
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I just wanted to say thank you. I bought the PCBs; I should have gotten the complete kit as it really is a good deal and everything would have shown at once. But on the plus side I'm like a little kid waiting for each of the components to show up; racing to the mailbox after work. This is so much fun.
 
Old 23rd September 2016, 04:40 PM   #42
tieutuanbao is offline tieutuanbao  Viet Nam
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can I replace JFET k170 by FET ?
 
Old 23rd October 2016, 03:03 PM   #43
Atomclown is offline Atomclown  Norway
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Wish i t had 10 Watts.
 
Old 24th October 2016, 04:09 AM   #44
tpaparsons is offline tpaparsons
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Can I put an Amp Camp Amp on top of my Klipsch Cornerhorns without interference or toasting the veneer ?
 
Old 23rd September 2017, 07:41 PM   #45
70s Veteran is offline 70s Veteran
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I built the camp amp but modified it asking Lateral MOSFETS I had from an audio consulting job to design a 200 Watt MOSFET amp.
I used a BC337-40 as a buffer.
Why - as the Base Emitter voltage is 0.6 volts and does not drift with temperature.
A simple 20 volt laptop supply and as a Heatsink a CUP cooler plus an ultra quiet fan.
No trimpots to mess around with.
Through a 30 year old - but now very trendy looking speaker box with a 10" speaker a 5" midbass and believe it or not. Two of those lovely 2" inverted dome mini 'woofers' to serve as upper miss and tweeters. Wow a mere 5 Watts of pure class A! If there is interest I will start a new thread with photos and schematics9
 
Old 24th September 2017, 01:46 AM   #46
e_fortier is offline e_fortier  Canada
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Amp Camp Amp #1
I would be interested

Pls post your text under Pass forum/ACA, it's a 345 pages thread. The ACA enthousiaste are all there.

BR
Eric
 
Old 25th September 2017, 08:25 AM   #47
kpsthakur is offline kpsthakur  India
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Amp Camp Amp #1
 
Old 13th November 2017, 04:04 AM   #48
kking85743 is offline kking85743
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Location: Desert SouthWest, USA
Greetings:
ACA 1.1 was shown at Burning Amp, and here is my parts list (as C1 & C2 are no longer available on Digikey)

Part names quantity value power/volt rating Digikey # Price @ Price 1 board
R1, R2 2 0.47 3W 5.00% P0.47W-3BK-ND 0.49 0.98
R3, R4 2 0.68 3W 5.00% P0.68W-3BK-ND 0.49 0.98
R5, R6 2 100 .4W 1.00% PPC100YCT-ND 0.13 0.26
R7, R11, R13 3 10k .4W 1.00% PPC10.0KYCT-ND 0.13 0.39
R8, R9, R14 3 1k .4W 1.00% PPC1.00KYCT-ND 0.13 0.39
R10 1 332K .4W 1.00% PPC332KYCT-ND 0.13 0.13
R12 1 68.1K .4W 1.00% PPC68.1KYCT-ND 0.13 0.13
R15 1 2.21K .4W 1.00% PPC2.21KYCT-ND 0.13 0.13
C1 1 3300uF 35v 20.00% 493-6141-ND 2.46 2.46
C2 1 1000uF 16v 20.00% P5533-ND 0.62 0.62
C3, C4 2 10uF 25v 20.00% 604-1050-ND 0.31 0.62
LED 1

total for 1 board -> 7.09 plus LED of your choice, shipping and tax (remember you need two sets)

C1 is a Nichicon, C2 is an alternate Panasonic
 
Old 19th November 2017, 12:42 PM   #49
kking85743 is offline kking85743
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Grrrr. I forgot to check my notes from NP's talk before ordering my parts. R12 changed to 68.1k to 39.2k. If you got the wrong part (or have an ACA that's already build and you want to try the new value), you can get close by putting a 100k in parallel, for a total of 40.5k, or about 3.3% high on the value. Obviously, the proper solution is to replace it at your earliest convenience, but in the mean-time, this hack might help you decide if it's worth taking it completely apart.
 
Old 20th November 2017, 05:48 AM   #50
kpsthakur is offline kpsthakur  India
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Default Amp Camp Amp #1

Any sneak peek (maybe a blurred view) of the new board?
 

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