The Amp Garage

I think I solved the mystery; I had an envelope with some FR 1000V diodes with a 1/2A rating. I did a side by side comparison and they look exactly the same.

So basically they're selling UFXXX7 diodes rated at 1/2A and calling them UF4007....

TT

I'm going to do the test shown on one of the UF4007 datasheets; if they look look close to the specs I'll use them if not, I won't... I've bought parts from Ebay before with no problems, just not semiconductors.... It's true that it's not worth the extra time spent to save a few bucks :oops: From no...

When I was 14 a good friend bought a 212 SG amp like shown in your pictures that came with a Trini Lopez Gibson guitar...

That was the first electric guitar and amp I had ever played and it was total guitar heaven to me. The phaser shifter is awesome! China Grove in a box.....

TT

But seriously folks, as Joe Walsh once said, are these inferior parts or nothing to get my panties in a bunch over?

I know, "just shut up an play yer guitar!...

TT

I just received a pack of UF4007 diodes I purchased off Ebay. The price was good, $3.00 for 100 pcs. or there abouts. They came loose in a plastic bag and not with tape on both ends like you receive from Mouser, Digikey, etc. One thing I didn't like though was the fact that the Chinese made diodes a...

Thanks for the recommendation; yes I did google to try to find what I was looking for but the results were a bit overwhelming. Which is why I thought I'd ask for some real life experiences to narrow the gap a bit....

TT

Hi, I was wondering if anyone knows of a software that will take a chord played on a guitar and create a chord diagram as seen in sheet music for guitar. I've seen mention of Guitar Pro 7 which prints out the actual notation and chords together. Thing is it's $70.00, I don't care to read musical not...

Read Merlin's remarks about standby switches and / or R.G. Keen's if you want to put this to rest.... yes there are lots of myths out there...

TT

Hope you can see this....

TT

I wonder if your harshness issue is due to the EL84 grid voltage being too high when overdriven? There have been some disscussions about this and there was a circuit created (Paul Ruby?) that puts a zener diode in the signal path of the power tube grid to limit the voltage to somewhere around 15 to ...

There should be a capacitor after the master volume as well, and you should have 220 K or thereabouts bias feed resistors. That master volume should be completely isolated from the bias circuit ...

TT

This thread demonstrate why sharing layouts without schematics is counter-productive: -it's impossible to see what's going on -it's impossible to detect errors that subsequently get spread over the internet. So very true.... No disrespect but it's a newbie thing. I remember 25 some years ago that e...

Oh, it's interesting. But it's cathodyne phase inverter. The AC30 has long-tail phase inverter. Can you show me the example of the "Texture Control" in long-tail PI? There's a Post PI Master Volume that's popular with the Trainwreck crowd among others. (Allen Amps uses it too) It uses a dual pot as...

Well... It's actually pretty easy and not very complicated.... Peavey calls it a Texture control. It's basically a post PI volume control for one of the power tubes. You turn the volume off for one of the power tubes, the remaining tube becomes your SE amp output. If you play with the value of the 8...

OK I see! that 6G7 TC is very unusual for a fender design, so it looks like you've got it hooked up correctly then...

Any idea what you'll do with the un-used triode @ V2?

TT