And still more here ........... viewtopic.php?f=7&t=6269&hilit=T1&start=0

Those are some nice amp threads, "but this one goes to 11"

Hi Zac: another early re-badged Jensen P12N on eBay Seller says he thinks it's 16 ohms, I think he's right. The auction has a pic of the large magnet. The BIN/BO at $99 isn't much of a deal ... it will probably go around a few more times.

Nice work on that one. But whatever happened to the "fishscale grillcloth"?

Long gone ... the amp was DOA and the grillcloth had a hole in it matching up with the hole in the 12" speaker right behind it. It's just as well; the stuff is made out of a plastic that oxides to the point of becoming brittle like the old spun fiberglass ... touch it and you get little pieces of it embedded in your skin ... they don't call it 'fishscale' for nothing.

Okay. I think I'll do new grillcloth when I get around to replacing the speakers. I did see the link Coastie gave in another thread with some nice choices.

If (if) you are going to replace the speakers and the grillcloth, now is the time to consider replacing the baffle ... not less than 9-ply Baltic birch (not Carpathian Spruce) like this stuff ... from the guy I buy from on eBay. I don't know what you might be able to scavenge from local cabinet shops ... the stuff at the lumber yard is no good ... too wet and too many knots. If you mess with this, you'll need some of these. .... known as Ferlingheimer screws in New Zealand ... the double threads keep the stud from turning when you're tightening down the nuts from inside. There are also longer ones around; depending on the thickness of the new speaker rim, you might need to counter-sink these into the face of the new baffle.

Not saying you have to do this but particleboard softens, flexes, and disintegrates over time ... and no, particleboard wasn't used for its tone-enhancing properties. One option might be cabinet-grade MDO ... but before you make up your mind, you ought to cruise Clark Amplification, Victoria Amps, Carr, Top Hat ... and the other boutique amp makers ... see what they are using. If they're using MDO ok ... but if they aren't ... I mean don't bother fooling with it if you can't get the right stuff. Good luck. J

"Thanks for the info"

J

Z-man, a word of caution.

If you're planning on taking the Chunder 1 on your next tour, you'd be well advised to consider using conventional grillcloth.
Industrial-strength, those radio grillcloths are not !!

This 'ere one looks particularly sharp ........... #67 reversed.

Stone 1, no? Mighty sharp!

Stone 3, I think, but who's counting ?

Now Wuzzatone spec'd and sounding bitchin' !!

Congratulations! ... yeah ... keeping score ... can be troublesome ... Re-arranged ps cap leads, mounted OT, will go to speaker out jack in lieu of tag strip, having a Weber Hell's Bells event now with the PT ... aarrrgghhh ...

It's moments like these you need ...... Minties !!

http://www.youtube.com/watch?v=5hMCqOtduTM

I'd beg but my Dr says no more ... over the limit for the next three years ... will be contacting Weber today. Check that ... solved the mechanical engineering puzzle with the PT as follows (premature ejaculamentation ) .... had hoped for 'conventional' arrangement ... AC leads out one side, DC out the other but instead now bunched ... might make trouble getting all 13 through the grommet: