Search found 936 matches

by didit
Tue Mar 26, 2024 3:30 pm
Forum: Trainwreck Files
Topic: Pictures of Trainwrecks
Replies: 14
Views: 41679

Re: Pictures of Trainwrecks

Hello --

For the truly interested it seems at least some of the images posted via "http://www.thehomepaintingco.com/" have been archived at the wayback machine.

https://web.archive.org/web/20150627011 ... Wreck1.JPG

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by didit
Mon Mar 25, 2024 6:58 pm
Forum: Dumble Discussion
Topic: New Project
Replies: 26
Views: 657

Re: New Project

Hello -- My project is a single ended amp, so no PI. I don't know if I'll miss it since the Dumble power amp is pretty much a clean Hi-Fi type. It's a bit of an experiment, so I'll just have to see how it turns out. The preamp is a copy of my 100W low-plate, so it will be interesting to see how much...
by didit
Thu Mar 21, 2024 1:54 pm
Forum: Fender Discussion
Topic: Can I use a Bassman 70watts PT and OT for a Deluxe reverb?
Replies: 10
Views: 252

Re: Can I use a Bassman 70watts PT and OT for a Deluxe reverb?

Hello — The simple answer to your question should be clear by now. Nope. Looking for a not-too-loud and early break-up sound. Buy a Deluxe or Princeton transformer set, plus a Princeton or Deluxe chassis; and follow more or less directly Martin Manning’s Deluxe build thread. Depending on goals and f...
by didit
Tue Mar 19, 2024 9:29 pm
Forum: Technical Discussion
Topic: Heater Wires - Elevate or Twist?
Replies: 18
Views: 513

Re: Heater Wires - Elevate or Twist?

Series connected pairs run well on 12.6V.

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by didit
Tue Mar 19, 2024 6:37 pm
Forum: Technical Discussion
Topic: ADA MP-1 schematic question
Replies: 2
Views: 78

Re: ADA MP-1 schematic question

NE572.

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by didit
Tue Mar 19, 2024 1:21 pm
Forum: Technical Discussion
Topic: Flash seen from bottom of 12AT7 PI socket
Replies: 22
Views: 376

Re: Flash seen from bottom of 12AT7 PI socket

Do a search on “mullard triode flash” and read up about the wide observations that this is typical and believed benign.

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by didit
Mon Mar 18, 2024 6:06 pm
Forum: Dumble Discussion
Topic: Choke Selection Question-Dumble Reverb
Replies: 15
Views: 647

Re: Choke Selection Question-Dumble Reverb

Don’t put too much into that particular spec ..
by didit
Mon Mar 18, 2024 4:33 pm
Forum: Fender Discussion
Topic: Restoring a 1974 Deluxe Reverb - Seeking Advice
Replies: 69
Views: 2444

Re: Restoring a 1974 Deluxe Reverb - Seeking Advice

bcmatt wrote: Mon Mar 18, 2024 4:11 pm So, I'll put the dropping resisters back to stock for now and see if I can get close to schematic voltages through some tube swaps.
Maybe hold off with your soldering iron until you’ve tested with a full set of known good tubes?

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by didit
Mon Mar 18, 2024 1:16 am
Forum: Dumble Discussion
Topic: Choke Selection Question-Dumble Reverb
Replies: 15
Views: 647

Re: Choke Selection Question-Dumble Reverb

Hammond 154G?

Fits and has the basic correct specs.

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by didit
Sun Mar 17, 2024 1:12 pm
Forum: Fender Discussion
Topic: Restoring a 1974 Deluxe Reverb - Seeking Advice
Replies: 69
Views: 2444

Re: Restoring a 1974 Deluxe Reverb - Seeking Advice

What is the ‘D’ node voltage with V1/V2 & V4 pulled? While sockets are empty can you add a static load temporarily to ‘D’ with 5W resistor at reasonable value (Ohm’s law) to hit a current target of ~10mA? What’s the voltage loaded? The goal being, 100% confirm "load" weakness somewhere in and around...
by didit
Sat Mar 16, 2024 12:41 am
Forum: Garage Talk
Topic: What's for supper?
Replies: 66
Views: 2187

Re: What's for supper?

cbass wrote: Fri Mar 15, 2024 10:14 pm BBQ chicken pizza
Awesome ..
by didit
Fri Mar 15, 2024 6:00 pm
Forum: Technical Discussion
Topic: Lowering B+ on Single ended amp with Choke input
Replies: 9
Views: 247

Re: Lowering B+ on Single ended amp with Choke input

Hello Guy -- Recommend you get set up to run simulation using http://www.duncanamps.com/psud2/ . A bit of learning effort. However, in my experience quite accurate and much easier to learn than Spice or other similar general tools. And yes, it's possible to both reduce voltage and improve B+ stabili...
by didit
Thu Mar 14, 2024 9:55 pm
Forum: Garage Talk
Topic: What're you listening to right now??
Replies: 1172
Views: 336066

Re: What're you listening to right now??

Doubtless touch and go off topic for this spot, but no other alternative seemed obviously better.



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by didit
Wed Mar 13, 2024 6:00 pm
Forum: Fender Discussion
Topic: Deluxe Reverb power transformer change?
Replies: 11
Views: 495

Re: Deluxe Reverb power transformer change?

Perhaps a read through of this semi-related thread would help 1974 Deluxe Reverb Restoration.

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by didit
Tue Mar 12, 2024 12:32 pm
Forum: Fender Discussion
Topic: Restoring a 1974 Deluxe Reverb - Seeking Advice
Replies: 69
Views: 2444

Re: Restoring a 1974 Deluxe Reverb - Seeking Advice

martin manning wrote: Tue Mar 12, 2024 8:59 am Still don't understand why the preamp voltages are so high when the OT C voltage is pretty much spot-on. Is the value of the dropping resistor between B and C ok? C is also quite a bit high.
Exactly so ..