ASUSA K2003 - Antique Sound USA Schematic request

[Nac458]

Hello all!

I’m looking for a copy of the schematic for a small SET tube amp, model K2003, made by Antique Sound USA.

These were built circa 2001

Thanks!

 

[Euphony]

I'm also looking for this schematic, and one for their PA-1 preamplifier. Any luck finding one?

 

[Nac458]

I'm also looking for this schematic, and one for their PA-1 preamplifier. Any luck finding one?

No luck yet. I have even attempted using the way back machine LOC tool to go back to their old website but no dice.

I’ll keep looking and let you know if I come across anything

 

[Euphony]

Ha! I did that as well, found some specs, but not much else. I even sent an email to their address just in case, but it didn't go anywhere.. Sounds good, I'll do the same.

 

[Nac458]

Ha! I did that as well, found some specs, but not much else. I even sent an email to their address just in case, but it didn't go anywhere.. Sounds good, I'll do the same.

Hey Euphony,

I am working on rebuilding what I believe to be the original circuit from some old photos. I am having trouble with finding the value of what appears to be a blue mylar or film capacitor right after the power section. See attached photo.

Does your amp have this capacitor in the circuit? If so, what is it's value and voltage rating please.

Thank you!

 

[Nac458]

Success! I believe I have wired the amp up to the original circuit (minus the placement of that mystery blue capacitor).

Mine really sounds great. However, I’ve come to find out I have a blown output transformer. Going to give it a go at rewinding it myself, seeing as it’s only a 5k primary 8ohm secondary bobbin.

All that aside, I’m working on a schematic and I’ll post my drawing of the circuit here once I’m done.

 

[Euphony]

Success! I believe I have wired the amp up to the original circuit (minus the placement of that mystery blue capacitor).

Mine really sounds great. However, I’ve come to find out I have a blown output transformer. Going to give it a go at rewinding it myself, seeing as it’s only a 5k primary 8ohm secondary bobbin.

All that aside, I’m working on a schematic and I’ll post my drawing of the circuit here once I’m done.

Hey, not sure how I missed this, but congrats, and sorry about the transformer!

That blue film cap in question is a 0.22 400v on mine.

Any progress with the schematic? I found a burnt resisitor and two hard to see broken solder joints in mine, guessing that is causing intermittent issues.

 

[vinylkid58]

That blue film cap in question is a 0.22 400v on mine.

Typical value for a film coupling cap.

I looked around for a schem., but found nothing. A very simple amp to reverse engineer.

jeff

 

[TriodeLuvr]

I won't buy basic audio gear - amplifier, preamp, tuner, etc. - without confirming that a schematic and/or service manual is available. Even if I have to buy it, I'll do that at the time of purchase, just to be sure it's available if needed. Companies that won't make this information available don't get my business. I know this doesn't help you at this point in time, but maybe consider it for future purchases.

Jack