Search found 333 matches

by Bear
Tue Sep 11, 2012 3:58 pm
Forum: Dumble Discussion
Topic: Anyone done a PI driver with 6V6's?
Replies: 61
Views: 9255

Re: Anyone done a PI driver with 6V6's?

I think people familiar with the CF driver schematics and the similar Ampegs might have assumed schematic errors or may just not have looked closely. Perhaps the difference in tube choice between the two configurations make more sense when accounting for the different configurations. (Or did the tub...
by Bear
Sun Sep 02, 2012 4:48 pm
Forum: Technical Discussion
Topic: Bass Amplification and 2x12" Cabinets - Suggestions
Replies: 5
Views: 1801

Re: Bass Amplification and 2x12" Cabinets - Suggestions

A doubled TL-806 should be similar to the Dr Z "Z-Best" cab. I've seen chatter that if you adjust the port tuning (the shelf length) and put in bass appropriate speakers that it works out well as a bass cab. If the info doesn't come up on search, maybe at TalkBass. (They tend to be a bit down on the...
by Bear
Sat Sep 01, 2012 4:23 pm
Forum: Garage Talk
Topic: Coolest Old School Rack Gear
Replies: 20
Views: 6458

Re: Coolest Old School Rack Gear

Definitely my MXR M-175 Digital Time Delay. It's a really fun 80's digital delay with built in chorus, flanger and doubler. The deal is it's not a very useful delay, just a run of the mill stale digital delay, but they gave it the ability to self-oscillate well into the audio range. Also it has a w...
by Bear
Sat Sep 01, 2012 4:16 pm
Forum: Dumble Discussion
Topic: Anyone done a PI driver with 6V6's?
Replies: 61
Views: 9255

Re: Anyone done a PI driver with 6V6's?

Hmm. The expense of a quartet of output tubes for power I didn't need was a factor in my thought. But that description of the 6550 outputs sounds very, very interesting. Maybe a pair of 6550's would simplify things while keeping some of that big amp character.
by Bear
Fri Aug 31, 2012 4:48 pm
Forum: Dumble Discussion
Topic: Anyone done a PI driver with 6V6's?
Replies: 61
Views: 9255

Anyone done a PI driver with 6V6's?

I keep mulling a low powered 6V6 amp mining the Dumbleland and SSS designs to give a cleanish pedal platform for mostly home use. A lot of the discussion of the high power circuits is about the benefits of the various post-PI driver configurations. I wonder if anyone has messed with drivers in a low...
by Bear
Wed Aug 29, 2012 9:51 pm
Forum: Dumble Files
Topic: Dumble Small Special 100 photos (uncensored).
Replies: 39
Views: 32905

Re: Dumble Small Special 100 photos (uncensored).

Anyone know of audio samples of a Small Special (or clone)? Or are they so indistinguishable from the clean side of an ODS as to make no difference?
by Bear
Sat Jul 21, 2012 10:20 pm
Forum: Garage Talk
Topic: Theatre shooting
Replies: 38
Views: 6384

Re: Theatre shooting

All good points but if 20 or 30 folks are armed and start returning fire The attacker isn't going to make it far. The crossfire of 20-30 people all around him trying to shoot the poorly seen assailant in the chaos of a dark, smoke-filled theater couldn't have had a downside? No one would make it fa...
by Bear
Sat Jul 21, 2012 8:42 pm
Forum: Technical Discussion
Topic: Twin Reverb build
Replies: 19
Views: 3612

Re: Twin Reverb build

Check out the blackface twins. After CBS took over, the wiring was a MESS. That being said, most of them still sounded nice. I've seen blackface Twin guts and they're better but still don't look quite tidy to me. It's a lot of frigging wire. And I've never seen a BF as tidy as that Mojo wiring pick...
by Bear
Sat Jul 21, 2012 5:42 pm
Forum: Technical Discussion
Topic: Twin Reverb build
Replies: 19
Views: 3612

Re: Twin Reverb build

If anyone can show me a Twin with actually fully tidy wiring, I'd be impressed but looking for snubbers and listening for squeals. It's almost too much wire to have any hope of tidiness.
by Bear
Fri Jul 20, 2012 1:53 am
Forum: Dumble Discussion
Topic: What can I do to an early 70's bandmaster?
Replies: 11
Views: 1313

Re: What can I do to an early 70's bandmaster?

This has always been the deal breaker for me with Bandmasters, and Pros. The smaller OT seems to work out better in Vibroluxes, but the Bassman and Twin OTs rule for my money. It's curious, that. Lots of people love Vibroluxes. Something about how the pair of tens delivers with the smaller transfor...
by Bear
Sun Jul 15, 2012 4:49 pm
Forum: Dumble Discussion
Topic: Dumble SSS - history and info
Replies: 64
Views: 24370

Re: Dumble SSS - history and info

Other than #5 having Peavey iron, do we have anything solid info on what model iron in that case or what other iron the 150 watters used? Do we know what was used in 150w Dumblelands?
by Bear
Sun Jul 08, 2012 12:54 am
Forum: Trainwreck Discussion
Topic: Gibson Historic potentiometer....
Replies: 177
Views: 56508

Re: Gibson Historic potentiometer....

Hah! I've been looking to see if anyone does the true log stuff with pull switches or dual concentric for some wiring projects and not coming up with any luck for anything that looked of the same breed as the Historic pots. I'm gonna just try my luck now.
by Bear
Fri Jul 06, 2012 2:30 am
Forum: Dumble Discussion
Topic: What distinguishes a SSS from a Dumbleland?
Replies: 11
Views: 4535

Re: What distinguishes a SSS from a Dumbleland?

From this I would deduct that the 2 Reverb CF/mixer tubes would be omitted in those amps along with alot of their feedback networks too? Interesting given those touting the CF/mixer tubes being a part of the SSS "magic". Or maybey HAD found a way to include a CF mixer with only 2 reverb tubes to pl...
by Bear
Wed Jul 04, 2012 9:04 pm
Forum: Technical Discussion
Topic: Fender Vibrato Circuit: Twin or Princeton?
Replies: 20
Views: 8993

Re: Fender Vibrato Circuit: Twin or Princeton?

Hmm. Might have to think more about VC preamp bias based options. No issues with post-PI driver stages, ala SSS. Harder chop is good with me, too.
by Bear
Sun Jul 01, 2012 3:17 pm
Forum: Dumble Files
Topic: Chassis drilling templates?
Replies: 1
Views: 2333

Chassis drilling templates?

Over in the TW file section, there are templates placing all the chassis holes on the standard sized chassis that Ken Fischer used. Is there anything like that for any Dumbles? (HAD interviews have him indicating that component layout on the chassis is important enough that you wouldn't get the same...