Search found 111 matches

by RB
Tue Mar 14, 2017 7:11 pm
Forum: Garage Talk
Topic: Triodestore or TriodeElectronics
Replies: 29
Views: 840

Re: Triodestore or TriodeElectronics

My experience with Amp Parts Direct has been very good. Usually get a shipping notice within 24hrs of order and the parts show up within 2 days. On three occasions I didn't receive a shipping notice or any other email for a couple of days. So I called them. A part was out of stock each time that hap...
by RB
Wed Feb 15, 2017 8:08 pm
Forum: Fender Discussion
Topic: AB763 KT88 Question
Replies: 11
Views: 458

Re: AB763 KT88 Question

Thanks Mark I had just finished reading the remarks about Triode in another area of the forum when I found your post. There was a real great guy that worked for them a few years ago. He really gave me great service but when he left they jacked me around big time on a large order and I have never bee...
by RB
Sun Feb 12, 2017 10:00 pm
Forum: Fender Discussion
Topic: AB763 KT88 Question
Replies: 11
Views: 458

AB763 KT88 Question

Thanks for all the replies. Well the speaker is an EV. Also have a couple other 101+db speakers by eminence. So looking around at possible xfmr choices I favor the a431s OT and the p782s PT Dynaco iron offered by Triode Electronics After you figure in the cost of tubes and the xfmrs and power supply...
by RB
Thu Feb 09, 2017 10:48 pm
Forum: Dumble Discussion
Topic: Bit of current Eric Clapton/Dumble inside info
Replies: 21
Views: 915

Is it Black Face or Tweed?

Seems I recall seeing a pair of Low Power Tweed Twins behind EC for a number of years. The last versions of the tweed Super/Pro/Bandmaster/LPTwin share the same CF tone stack, PI and output section(different OTs). Preamp was different in Low Power Twin. Super/Pro/Bandmaster all the same circuit with...
by RB
Thu Feb 09, 2017 10:42 pm
Forum: Dumble Discussion
Topic: Deleted
Replies: 0
Views: 110

Deleted

Deleted
by RB
Thu Feb 09, 2017 10:13 pm
Forum: Fender Discussion
Topic: AB763 KT88 Question
Replies: 11
Views: 458

AB763 KT88 Question

I have a head that is basically a AB763 reverb only - 12AT7 PI - 2X6L6 OT is Classic Tone BFBassman 50watt 4K - PT is 200ma 320-0-320 with solid state rectifier. Heater spec is 5A so no problem with 2x12AXY 2x21AT7 and 2xKT66/6550 I am looking for the shortest path to a little more power/SPL - clean...
by RB
Mon Jan 02, 2017 7:07 pm
Forum: Dumble Discussion
Topic: High power Tweedle Dee.
Replies: 13
Views: 828

Re: High power Tweedle Dee.

I have built/converted many Tweed Deluxes to big bottle amps. Tried all the OTs Mentioned (except MM) above and settled on the Tweed Pro/Super/Bandmaster 6k iron. 6L6,5881 and KT66 all sound amazing cathode biased. Fixed bias produces a little more power but some of the creamy quality disappears. I ...
by RB
Thu Sep 15, 2016 2:56 am
Forum: Technical Discussion
Topic: A mod/trix I never seen before
Replies: 20
Views: 1787

Re: A mod/trix I never seen before

When I pushed the submit button on my last post I thought I should have added where is martin manning when we need him?

Thanks so much for the clarification.

Randy
by RB
Wed Sep 14, 2016 10:20 pm
Forum: Technical Discussion
Topic: A mod/trix I never seen before
Replies: 20
Views: 1787

Re: A mod/trix I never seen before

When I think of feed back I understand that to be from an output to an input. This clearly bridges two outputs. I don't see how that constitutes feedback. It seems like it would create something like mixing/balancing/co-mingling of the two AC components. Would these signals be out of phase? I think ...
by RB
Wed Sep 14, 2016 3:24 am
Forum: Technical Discussion
Topic: A mod/trix I never seen before
Replies: 20
Views: 1787

trick??

I think he is referring to the silver mica between what appear to be the plate loads for the first two stages. just before the tone stack
by RB
Thu Jun 02, 2016 4:57 pm
Forum: Speakers and Cabinets
Topic: Cube 1936 = finger joint insanity
Replies: 10
Views: 1681

Wow

I think you should rename your post to "finger joint mastery".
Very kool cab.

Regards
Randy
by RB
Wed Jun 01, 2016 9:23 pm
Forum: Marshall Discussion
Topic: Buying a choke for JTM-45 build
Replies: 2
Views: 644

Buying a choke for JTM-45 build

I am going to buy a PT and OT from Mag Components but am not sure which of their chokes to buy for the JTM. I would appreciate any and all suggestions.

Regards
Randy
by RB
Sat Feb 13, 2016 7:53 pm
Forum: Garage Talk
Topic: MOSFET heat sink connection
Replies: 2
Views: 596

Re: MOSFET heat sink connection

I always take an ohm meter and check the resistance between the leads and the back to check for continuity to determine if any pin is common with the back/sink portion of the device. Depending on the device type you would then chose to insulate it from the chassis or ground it.

Regards
RB
by RB
Thu Feb 11, 2016 8:29 pm
Forum: Garage Talk
Topic: I forget what I can't remember
Replies: 8
Views: 616

Re: I forget what I can't remember

I just went over to the fender field guide site and checked out all the brown/blonde era schematics. They either have the 4 terminal/tapped treble pot or a Baxandall type tone circuit with the exception of the bass channel on the 6G6 amp. Actually its goes triode-bass-triode-treble-triode. Regards R...
by RB
Thu Feb 11, 2016 7:08 pm
Forum: Garage Talk
Topic: I forget what I can't remember
Replies: 8
Views: 616

Re: I forget what I can't remember

The first thing that comes to mind is a Blonde Bassman 6G series

Regards
RB