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The ADS R1 is very compact receiver 3 inches high, 17inches wide and 14 inches deep. 35 watts per channel

I noticed the 7155 has the preout/amp in jumpers. If you have a spare preamp or power amp or another integrated amp/receiver with the same jumpers, you could narrow down the problem to either the amp side or preamp side. I would also make sure your controls are cleaned with deoxit d5 for...

My only complaint with the ka-3500 is from a service point of view. The kenwood engineers didn’t put a bottom plate on the amp. So to get at the circuit board to replace parts, you have to remove the front panel and faceplate and the main board from the base Other than that, I completely...

Why not buy a second Audiosource Amp 100. You can bridge them for 160 watts per channel. You should be able to pick one up for around $100. This will leave you $200 for a decent preamp, like the Kenwood C1 or the C2

Onkyo Integra A-807 80 watts per channel $319 search ebay no Affiliation

Restoring a NAD 3020, kenwood ka-3500, NAD 3300. Finished realistic sta-800 and ka-3500. On deck is a Denon dcd 1290.

July 26th 2012

The kenwood ka7100 is a great vintage amp. When fully restored it will produce a nice warm 3D sound. That’s the problem, most 7100’s you’ll find on ebay are not restored. There will almost certainly be electrolytic capacitors that have dried up because of its age. When a capacitor loses it’s...

I’ve worked on one of these. As some else said on this site, the engineer who designed this should be shot. If you need to get at the output transistors, you have to completely remove the heat sinks and about 10 or 12 diodes with really thin wires, you will need to unsolder them from the...

Interesting fact, the sta-800 is nearly identical to the sta-85. There maybe some minor circuit differences, if you look at both circuit boards they look identical. The front and back panels are identical.

Estate sale start Friday April 9th. I have no affiliation with this sale Probably not working (notice cheap stereo sitting on top) Harmon Kardon A500 tube integrated amp, Harmon Kardon tube tuner and a Viking of Minneapolis reel to reel. all sitting in a nice cabinet with speakers. I wonder...

I would like the Proton AM-300 a lot more if it had a normal volume knob instead of the "up" down" push buttons. Other than that, this is a super cool integrated. I was wondering if you might have a problem with replacing the main filter caps because of the height limitations

I fixed my post, thanks

I just finished up a 3020, I think it’s the same as yours. You do need to remove the solder bridge and measure across the bridge for 30-60 MV. I solder leads on both sides of the bridge and attach my dvm To the leads. It’s just easier. I can’t answer your question about resistor values, since...

That resistor is in the power supply section. It’s 5 watts and is designed to get warm, but, of course, it shouldn’t be smoking. You need to unplug the amp and take the bottom plate off, turn the amp on it’s side, with the transformer on the bottom for balance and inspect the solder joints...

The NAD 3155 has the pre-out amp-in jumpers on the back. This is a good way to narrow down where the problem is. If you have a spare power amp or a spare preamp you can connect these through the pre out amp in jacks (you have to remove the jumpers), if you don't have this equipment, you can run...

Completed projects, Pioneer SA-9100, ADS A2 (integrated amp) NAD 3020, NAD 7140 (receiver) Lafayette LR-5000 (quad receiver) NAD 372

Completed, thanks so much Merlnymski for your help. Your last step went well, I was able to get clipping adjusted for both peaks, just as you instructed for both channels. The bias was high for the right channel, so I readjusted, left was a tad high. listening to this right now. Sounds beautiful

The center voltage a bios were set while on full mains. Today all the voltages are right on.

I did not do any adjustments while connected to dbt. I did the 20 minute burnin at full volume while connected to dbt because I was concerned, at first, that something would fail, or the fuse would blow. I monitored the heat sinks and around 20 minutes I was confident that nothing was...

I went back and checked center voltage with no signal and zero volume. It was off a tiny bit but I got both Channels adjusted. The bios for both channels were around 14 MV, so I adjusted them back to 16mv