Chip Amp Photo Gallery - Page 12

luka · 28th August 2006, 02:47 PM

yes I am using 3525 in car,
Ok I'll look output with scope again.
I am not happy with the spikes on output, but I dont tkink I can hear any of them. they are some 0.5vp high or so.

dab · 1st September 2006, 09:31 PM

My, "BEATLE TIN AMP"
A Four channel stereo bi-amp run from a 30V battery source'

dab · 1st September 2006, 09:31 PM

My, "BEATLE TIN AMP"
A Four channel stereo bi-amp run from a 30V battery source.
Passive crossover at 500hz, Each pot controls a different channel.
Has Zobels, " the big resisters"
Modified many times.

This Beatle Amp is a Dead Bug Amp! , Get It?
Pun

The Inside

jaycee · 16th September 2006, 10:34 PM

My own "Gainclone":

http://www.darkmatter.myby.co.uk/pro...images/all.JPG

I bought the case on eBay which had some type of power supply (500VA toroid!) and control processor in it. Unfortunately the toroid wasn't suitable. The back panel is nasty thin metal that I happened to have lying around, I plan to replace this soon with a piece of the same 1.5MM metal that makes up the front panel.

As you can see, there is a set of 4 input jacks on the back. I plan to add a preamp and input select circuit to this soon. The transformer is some unit I had lying around that puts out 25-18-0-18-25. It is under rated but is OK for the low volumes that the amplifier is currently used for. I will be replacing it with a 225VA 18-0-18 transformer soon.

The capacitors are 4x4700uF 63V BHC Aerovox capacitors that I aquired cheap on eBay.

neutron7 · 17th September 2006, 01:36 AM

DAB i hope thats not the beatle tin thats worth $2000 on ebay

anyways its very cool, nice job!

lgreen · 3rd October 2006, 07:12 PM

Here are my chipamps-

LM3886 Chipamp with differential input

"Sparky" the LM4780 Chipamp in the "parallel" configuration.

Both work and sound good, though they don't look pretty on the inside!

enzedone · 3rd October 2006, 09:06 PM

John,

Have you thought about getting professional help with this obsession you have with blue LED's?

They look good mate.

Brett

lgreen · 3rd October 2006, 09:19 PM

Quote:

Originally posted by enzedone
John,

Have you thought about getting professional help with this obsession you have with blue LED's?

They look good mate.

Brett

I likeee them like that! Now that i'm started down the path everything has to match, and one problem is that I have a bag of 100 to use up. But note that the last amp only has 1 blue led in the whole thing, so i'm getting better. Plus the preamp is causing me to go blind.

jacco vermeulen · 3rd October 2006, 09:24 PM

Mr Blue,

what's the verdict on Sparky ?

enzedone · 3rd October 2006, 09:25 PM

Just sent you an email regarding pre amps.

1st September 2006, 09:31 PM	#112
dab diyAudio Member Join Date: Jul 2003 Location: st.pete fl	The Beatles Tin Amp My, "BEATLE TIN AMP" A Four channel stereo bi-amp run from a 30V battery source' __________________ make hifi not bombs

1st September 2006, 09:31 PM	#113
dab diyAudio Member Join Date: Jul 2003 Location: st.pete fl	The Beatles Tin Amp My, "BEATLE TIN AMP" A Four channel stereo bi-amp run from a 30V battery source. Passive crossover at 500hz, Each pot controls a different channel. Has Zobels, " the big resisters" Modified many times. This Beatle Amp is a Dead Bug Amp! , Get It? Pun The Inside __________________ make hifi not bombs

3rd October 2006, 07:12 PM	#116
lgreen diyAudio Member Join Date: May 2003 Location: San Diego, USA	My Chipamps Here are my chipamps- LM3886 Chipamp with differential input "Sparky" the LM4780 Chipamp in the "parallel" configuration. Both work and sound good, though they don't look pretty on the inside! __________________ Retired from DIY (2010) but still lurking now and again.

3rd October 2006, 09:06 PM	#117
enzedone diyAudio Member Join Date: Nov 2004 Location: New Zealand	LEDS John, Have you thought about getting professional help with this obsession you have with blue LED's? They look good mate. Brett __________________ I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX.

3rd October 2006, 09:25 PM	#120
enzedone diyAudio Member Join Date: Nov 2004 Location: New Zealand	Preamp Just sent you an email regarding pre amps. __________________ I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX.


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28th August 2006, 02:47 PM	#111
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	yes I am using 3525 in car, Ok I'll look output with scope again. I am not happy with the spikes on output, but I dont tkink I can hear any of them. they are some 0.5vp high or so.

16th September 2006, 10:34 PM	#114
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	My own "Gainclone": http://www.darkmatter.myby.co.uk/pro...images/all.JPG I bought the case on eBay which had some type of power supply (500VA toroid!) and control processor in it. Unfortunately the toroid wasn't suitable. The back panel is nasty thin metal that I happened to have lying around, I plan to replace this soon with a piece of the same 1.5MM metal that makes up the front panel. As you can see, there is a set of 4 input jacks on the back. I plan to add a preamp and input select circuit to this soon. The transformer is some unit I had lying around that puts out 25-18-0-18-25. It is under rated but is OK for the low volumes that the amplifier is currently used for. I will be replacing it with a 225VA 18-0-18 transformer soon. The capacitors are 4x4700uF 63V BHC Aerovox capacitors that I aquired cheap on eBay.

17th September 2006, 01:36 AM	#115
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	DAB i hope thats not the beatle tin thats worth $2000 on ebay anyways its very cool, nice job!

3rd October 2006, 09:24 PM	#119
jacco vermeulen diyAudio Member Join Date: Oct 2004	Mr Blue, what's the verdict on Sparky ?

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