Search:

Type: Posts; User: tigerzilly; Keyword(s):

Page 1 of 2 1 2

Search: Search took 0.02 seconds.

  1. I wired the vintage Jensen speakers for 8 ohms...

    I wired the vintage Jensen speakers for 8 ohms and installed a 1/4" jack. It makes an awesome sounding 2x12 speaker cabinet!
  2. Still some issues

    Close, but not there yet. I still have some issues I need to work through. With the amp reassembled I did some testing, and I'm hearing a faint 60 cycle hum. I need to lift the ground that I...
  3. I replaced all the electrolitic capacitors. ...

    I replaced all the electrolitic capacitors. There were a lot. They didnt look bad and I wasn't getting any hum, but I didn't want to diagnose the amp with 40 plus years old caps. I was concerned...
  4. I'm pretty sure it's two 16 ohms speakers in...

    I'm pretty sure it's two 16 ohms speakers in parallel. The amp and cabinet remained together. It appears there is a 16 and 8 ohm tap on the OT. I'll have to checked to see if that was changed to...
  5. The Univox chassis in on the bench. I didn't...

    The Univox chassis in on the bench. I didn't expect such a solidly made chassis. Seems on par with a fender. There's a cover on the bottom which keeps it totally enclosed. Remove the cover to...
  6. According to vintageunivox.com the 1005 cab...

    According to vintageunivox.com the 1005 cab originally came with two 12" Eminence special design speakers. The cabinet has a rating of 16 ohms, but the speakers combined measure 8 ohms. When I...
  7. Univox U-1220 w/ 1221 pickyback amp & 1005 2x12 cab

    I put the Astro Amp aside for a while after a major setback and started looking at my latest acquisition. It's a tube amp with a schematic! That's what I like!

    I picked this up for $240 a few...
  8. Well I wasn't angry, tired, or in a hurry...just...

    Well I wasn't angry, tired, or in a hurry...just careless.

    So you're saying everything is fried? Is it time to trash it?
  9. Hey Enzo. You're my hero! I started with a...

    Hey Enzo. You're my hero! I started with a couple Peavey amps and reading threads with your recommendations have been instrumental!

    I measured the pot both in and out of circuit. Its currently...
  10. It definitely reads 100k and measures 10k. Too...

    It definitely reads 100k and measures 10k.

    Too late! My speaker output wires shorted while testing. Something fried!
  11. Well I replaced four pots and re-powered. I was...

    Well I replaced four pots and re-powered. I was getting .18 volts at the speaker output. Sinewave looked good, but spiked with max treble....

    ...then my speaker output wires shorted. I smelled...
  12. Yes Im sure. I measured multiple times. The pot...

    Yes Im sure. I measured multiple times. The pot says 100k but measures 10k. I was thinking perhaps the pot was improperly assembled when manufactured.
  13. When I get the pots back in, I'll power back up...

    When I get the pots back in, I'll power back up and check!
  14. I'm having trouble staying focused with this one....

    I'm having trouble staying focused with this one. I started the schematic, but have a long way to go. So I started desoldering pots to test and clean. The resistive paint on a number of them has...
  15. Getting the amp to power up and pass signal...

    Getting the amp to power up and pass signal appears to be the easy part. The amp is noisy. Noise is unaffected by volume. Still no reverberator or vibrator. Reverb tank seems bad so I'll test...
  16. Back at it. Had my son play his guitar through...

    Back at it. Had my son play his guitar through the amp and I thought it sounds pretty good, but he's not convinced. Still some low level noise that needs to be resolved.

    I reattached the...
  17. Replies
    26
    Views
    1,466

    Pics of the finished amp. 52512 52513 ...

    Pics of the finished amp.

    52512

    52513

    52514

    52515
  18. Replies
    26
    Views
    1,466

    The amp is done and all is working well. ...

    The amp is done and all is working well. Attached are pics of the chassis before going back into the cabinet.

    52503

    52504

    52505

    52506
  19. I'll check voltages tonight. The footswitch jack...

    I'll check voltages tonight. The footswitch jack is in pieces. I have a new one to install. The reverb cable grounds have pulled from the board. I'll reattach them and connect the reverb pan. ...
  20. Correct. I looked at the fuses. One is a main...

    Correct. I looked at the fuses. One is a main fuse. The other is on the speaker extension jack.
  21. Astro Amp Lives!

    I reinstalled the power transistors with new mica and thermal grease. I replaced the two fuses with 3amp fuses to match what it came with. Powered it up with speaker unattached and had no sign of...
  22. I pulled the suspect power transistors. Mica...

    I pulled the suspect power transistors. Mica and screw insulators are all there. I'll still replace the micas.

    New caps are all in with some slight damage to the corner of the board. I'm...
  23. Underside cleaned.5244852449

    Underside cleaned.5244852449
  24. The underside of the board revealed.52444

    The underside of the board revealed.52444
  25. Ok. This will be my strategy. When parts arrive...

    Ok. This will be my strategy. When parts arrive I will detach the PCB from the chassis to expose the connections on the bottom side. Hopefully I can get enough access to remove and install the...
  26. Nice observation. I guess I was ignoring the...

    Nice observation. I guess I was ignoring the extra holes. Do you think its been messed with?
  27. All the electrolytics are domed out. I ordered...

    All the electrolytics are domed out. I ordered replacements for all. I found 4,000uf/25vdc from mouser. Now after reading your post, I see I had more options in the 4,700uf value. Hopefully the...
  28. Replies
    26
    Views
    1,466

    I fixed the weak tremolo by replacing the...

    I fixed the weak tremolo by replacing the opto-coupler. Everything in the amp now seems to be in good working order. Nice tone. I orderd a new speaker, a weber 12F150. When the speaker arrives...
Results 1 to 28 of 51
Page 1 of 2 1 2