The Amp Garage

Oh, and it will be running either a 4x12 Marshal cab with Heritage G12Ms, or a 2x12 with Alnico Blues. I like options.

Hey all, Long time, no build. The last ones I built (one Vox-ish, the other something unusual...) turned out pretty well, and I just sold my "big amp" (a killer Germino Classic 45...) and want to replace it with my own creation...of the same ilk. Yes, I know, silly to sell a perfectly good amp from ...

Interesting update.... Had the chassis out for a long time and was running the old TAD KT66s in the hopes that I could get the amp to act up. I couldn't...despite my best efforts. I put it back in the head cabinet this morning thinking perhaps it was a heat issue which caused the problem, thus expla...

Update: I've been running 5881s in the amp for a few days now with no issues, biased up at 33ma at about 420v. I have a bias probe attached in case the problem manifests itself again, and if it does, and the bias probe doesn't show anything odd, I'll take voltage readings right away. Now I'm beginni...

Interesting. That'd make sense. I was sure it was the Sozo caps, until I ran it for about 3 months with EL34s in it and had no issues. What I'll do next it is install a set of Tung Sol 5881s I have and see if they do the same thing, with the chassis in the cabinet. I have another set of KT-66s I can...

So, interesting update: For the past few months I've been running EL34B-STR tubes in the amp, and I've experienced none of the issues. Oddly enough, I don't remember a single instance of the amp dropping low end and gain. Just last week I put the older TAD KT-66s back in, and every time that I've pl...

butwhatif wrote:Buy a Jensen Mod speaker for it, forget the vintage

Those aren't the "re-issue" Jensens, right?

David Root wrote:I would try everything before I'd recone that old Jensen! It would never be the same.

OTOH, if it only needs a new voice coil, that's where Chris Merren can bail you out.

Will do!

I don't know what Norah's crew is doing these days, but the Princeton Reverb used on "Feels Like Home" had a C10N in it and sounded fantastic. You might try to snag one of those. I think it was stock in some of the Vibrolux Reverbs so there are quite a few out there. That's what I'm talking about.....

Very smart, David. I'll give it the "rotating" test. I did try tilting the cabinet, but not actually rotating it. Great idea. I'll check out Merren for sure. I've heard good things. As for replacement speakers...I've also heard good things about Jim Campilongo and the Norah Jones crew doing neat thi...

Attached are pics of the speaker in question. Nothing is obviously wrong....but I know that doesn't mean there's nothing wrong on the inside...

Hello all, I have a '66 Princeton and I'm wondering if something is up with the speaker. It looks to be original. It starts off sounding like there is perhaps a voice coil rub, but as I play longer that sound starts to fade. I usually play with the volume at 4 (with the Treble at 7 and the bass at 6...

I think the voltages should be good, as I'm only seeing 420vDC on the plates at most, being as I had the low voltage PT installed. So far, I'm really, really liking the STRs in my Germino Classic 45...they sound GREAT.

Nice. Thanks coolidge. Have you tried the STR variant, by chance?

Roe wrote:I havent tried but but heard that it is very rugged although not very el34 sounding

Good to know. Thanks. I want EL34, not "ish". I'll stick with the STRs for now....