Is this amp a dead-end?

Do It Yourself
1

Hi,

I was interested to get this group’s opinion.

Is this amp a dead-end? Meaning, i cannot find any schematics/specs for the potential replacement parts needed to rebuild it someday.

Would a good amplifier repairman be able to repair this amplifier if it had need for caps, powersupply, etc?

2

As you probably know, that was built in a one man shop using lots of proprietary circuit boards and design. When the owner/builder died all support vanished. There used to be quite a bit of discussion and info about these amps on Audiocircle.com but all threads/info have vanished from the site it seems.

1 Like
3

Thank you. Yes, that is what i have read as well.

To be clear then, an audio repairman would NOT be able to repair this amp as it ages?

4

No, that was a proprietary design and family members have had no interest in releasing schematics.

2 Likes
5

Thank you for this information.

6

It is sad this design is no more.

7

Several techs reached out to the family but got no reply. Tommy had no plan at all.

8

I’d be careful, class-D amps are fussy with digital RF based designs and can be a real problem with RFI emissions if not repaired and done correctly. The good news it should run just fine for a long time. My APT 1 amplifier made it 30 years! If you like it, no reason to worry about it as you’ll get your use out of it more than likely.

Galen

1 Like
9

Same thing happened when the designer of Spectron amps, John Ulrick died. No more support or parts.