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Old 20th February 2012, 04:57 PM   #2091
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Originally Posted by whaleman View Post
Here is a LM3875 based amp I just completed. The two amps boards came from eBayer audiosector in NJ, a very good quality kit.
Very nice job whaleman ! I like those big input caps, I did it the same way but using Sonicap. I would use bigger caps for power supply at least 4.700uf 105c X 3 on each rail.
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Old 20th February 2012, 05:13 PM   #2092
syklab is offline syklab  Hong Kong
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Quote:
Originally Posted by whaleman View Post
Here is a LM3875 based amp I just completed. The two amps boards came from eBayer audiosector in NJ, a very good quality kit.
Hi Waleman,m
Your LM3875 doesn't look anything like the one from Audio Sector and he is from Canada, not NJ. Are you sure you are quoting the right board from the right Vendor?

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Old 20th February 2012, 05:54 PM   #2093
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I think there is another guy on ebay with that name. I bought some 'cheap' PGA chips from an audiosector ebay seller and I'm pretty sure its not 'our' audiosector guy from canada (peter).
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Old 20th February 2012, 11:27 PM   #2094
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Originally Posted by dudaindc View Post
Clean assembly Whaleman - where did you get the enclosure?
Thanks, the case is from Par-Metal like someone said.

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Originally Posted by sandbasser View Post
whaleman...where did you get the heat sink???

Thanks,
That heat sink I think came from an Onkyo receiver I junked for parts.

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Originally Posted by lanchile View Post
Very nice job whaleman ! I like those big input caps, I did it the same way but using Sonicap. I would use bigger caps for power supply at least 4.700uf 105c X 3 on each rail.
Yes, agree. Those used to be 10,000, but turned out to be fake Nippon Chemi-con, so I tore them all out and had those 2200 uF laying around. Do you think I will hear a difference with bigger caps?

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Originally Posted by syklab View Post
Hi Waleman,m
Your LM3875 doesn't look anything like the one from Audio Sector and he is from Canada, not NJ. Are you sure you are quoting the right board from the right Vendor?

Regards
No, do not think is the man from Canada that posts around here, unfortunately...but he is eBayer audiosector in NJ, at least that is what is claimed.

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Originally Posted by linuxworks View Post
I think there is another guy on ebay with that name. I bought some 'cheap' PGA chips from an audiosector ebay seller and I'm pretty sure its not 'our' audiosector guy from canada (peter).
These boards were quite nice, gold plated I think. But not the same person.
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Last edited by whaleman; 20th February 2012 at 11:32 PM.
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Old 20th February 2012, 11:33 PM   #2095
6L6 is offline 6L6  United States
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Quote:
Originally Posted by syklab View Post
Your LM3875 doesn't look anything like the one from Audio Sector and he is from Canada, not NJ. Are you sure you are quoting the right board from the right Vendor?
Quote:
Originally Posted by whaleman View Post
Here is a LM3875 based amp I just completed. The two amps boards came from eBayer audiosector in NJ
Looks like he already answered that in the beginning.
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Old 20th February 2012, 11:56 PM   #2096
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Par-Metal 20 series
I thought so, but the finish looks so smooth.. the ones from P-M I have seen had a different finish (or so it seems from the photos).

Thanks!
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Old 21st February 2012, 12:50 AM   #2097
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I thought so, but the finish looks so smooth.. the ones from P-M I have seen had a different finish (or so it seems from the photos).

Thanks!
I actually take some 00 steel wool and rub the whole case (in the direction of the brushing), then I use Brasso on the front and back plates. Otherwise it is a bit rough.
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Old 22nd February 2012, 03:50 PM   #2098
6L6 is offline 6L6  United States
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Audiosector LM3875, Antek 300va 22v+22v transformer, Par-Metal 12x12x4" chassis.

It's built exactly like the schematic right now, The case is kinda big so I have room to play with PSU configurations. There is no doubt I need to get a prettier power switch...

Initial impressions are very favorable!

Click the image to open in full size.

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Click the image to open in full size.

Once it's all done in it's final configuration I will do a build thread.
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Old 22nd February 2012, 04:33 PM   #2099
tsaelee is offline tsaelee  United States
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Just got on to this forum and saw this - what a beautiful creation! The best I've seen so far.
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Old 22nd February 2012, 04:46 PM   #2100
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Originally Posted by 6L6 View Post
Audiosector LM3875, Antek 300va 22v+22v transformer, Par-Metal 12x12x4" chassis.

It's built exactly like the schematic right now, The case is kinda big so I have room to play with PSU configurations. There is no doubt I need to get a prettier power switch...

Initial impressions are very favorable!
Once it's all done in it's final configuration I will do a build thread.
Very nice! I recognize that case. Here is a nicer neon lit power switch:

SPST Round Rocker Switch w/Red Illumination 125VAC 060-716
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