Search found 6783 matches

by xtian
Wed Mar 27, 2024 3:44 pm
Forum: Speakers and Cabinets
Topic: Drilling holes prior to covering in Tolex?
Replies: 5
Views: 112

Re: Drilling holes prior to covering in Tolex?

I drill first. After vinyl, I find the holes and cut matching circles in the vinyl with an Xacto blade.
by xtian
Fri Mar 22, 2024 4:07 pm
Forum: Garage Talk
Topic: I bought a solid walnut apartment. Uh, speaker cabinet.
Replies: 27
Views: 926

Re: I bought a solid walnut apartment. Uh, speaker cabinet.

Leo_Gnardo wrote: Thu Mar 21, 2024 5:16 pm Like every horizontal surface around here, a collection of doo-dads has gathered atop.
That's not some rando collection, that's a finished instrument, an Apprehension Engine, for making scary noises for this Halloween's production of Rocky Horror Picture Show!
by xtian
Thu Mar 21, 2024 3:07 pm
Forum: Speakers and Cabinets
Topic: Question covering with one piece of Tolex
Replies: 9
Views: 185

Re: Question covering with one piece of Tolex

Exactly. Drive some nails (finish nails are best, with their small, roundish heads) into some scrap plywood. This serves as a stand for your work.
by xtian
Wed Mar 20, 2024 3:26 pm
Forum: Technical Discussion
Topic: Anyone else having issues with Mouser?
Replies: 4
Views: 112

Re: Anyone else having issues with Mouser?

No issues here. I order from mouser a few times each month, small orders. They're fast. Sorry for your troubles!
by xtian
Wed Mar 20, 2024 12:08 am
Forum: Garage Talk
Topic: I bought a solid walnut apartment. Uh, speaker cabinet.
Replies: 27
Views: 926

Re: I bought a solid walnut apartment. Uh, speaker cabinet.

Got some cane for the grille!

IMG_2979.jpeg
by xtian
Tue Mar 19, 2024 6:35 pm
Forum: Technical Discussion
Topic: film-o-sound 185 thing
Replies: 5
Views: 239

Re: film-o-sound 185 thing

Nice looking build!
by xtian
Tue Mar 19, 2024 1:55 am
Forum: Technical Discussion
Topic: Heater Wires - Elevate or Twist?
Replies: 18
Views: 586

Re: Heater Wires - Elevate or Twist?

I spent some time years ago TRYING to induce hum into my preamp by poorly routing heater wires. I failed.
by xtian
Mon Mar 18, 2024 8:30 pm
Forum: Dumble Discussion
Topic: ODS Inspired Build; #102 Values with Buffered FX Loop
Replies: 10
Views: 291

Re: ODS Inspired Build; #102 Values with Buffered FX Loop

martin manning wrote: Mon Mar 18, 2024 3:11 pmOT phase test would have got the NFB right the first time ;^)
Ooh! 'Splain, pls.
by xtian
Mon Mar 18, 2024 8:29 pm
Forum: Technical Discussion
Topic: Flash seen from bottom of 12AT7 PI socket
Replies: 22
Views: 452

Re: Flash seen from bottom of 12AT7 PI socket

I've had some preamp tubes (vintage USA) that flash on power up. Worked fine.
by xtian
Fri Mar 15, 2024 10:21 pm
Forum: Technical Discussion
Topic: Peavey Artist 240
Replies: 5
Views: 136

Re: Peavey Artist 240

OK, I agree. But B+ hits pins4 of the left-hand power tubes first, then goes thru 100R resistors, then to the pins4 of right-hand tubes. Doesn't this mean only half the tubes are protected by screen limiting resistors?
by xtian
Fri Mar 15, 2024 9:19 pm
Forum: Technical Discussion
Topic: Peavey Artist 240
Replies: 5
Views: 136

Peavey Artist 240

Interesting thing going on with the screen grids in the power section. Screens are wired in series, with 100R resistor between the two:
Screenshot 2024-03-15 at 2.17.03 PM.png

What's that about?
by xtian
Thu Mar 14, 2024 9:01 pm
Forum: Fender Discussion
Topic: Sound checked Blackvibe 6L6 rebuild to reverb channel without tremelo
Replies: 7
Views: 236

Re: Sound checked Blackvibe 6L6 rebuild to reverb channel without tremelo

Correct, I use a Kill-a-Watt meter to monitor power flowing into my devices.

Observing a bulb limiter might work, but your amp will be running at lower than normal voltages when inline with bulb limiter...might possibly hide an oscillation that happens at full voltage.
by xtian
Thu Mar 14, 2024 6:12 pm
Forum: Technical Discussion
Topic: 2024 Monkeymatic Liverpool (nontraditional)
Replies: 48
Views: 1244

Re: 2024 Monkeymatic Liverpool (nontraditional)

Gotta say, it saves a LOT of time when tweaking an amp for a player if the builder and player are the same person. 8) On reviewing an Orange TH30 schematic, I notice they dump 50% or MORE of the signal to ground after each stage. This is partly what makes Trainwrecks so wild and loud--no intentional...
by xtian
Thu Mar 14, 2024 6:03 pm
Forum: Fender Discussion
Topic: Sound checked Blackvibe 6L6 rebuild to reverb channel without tremelo
Replies: 7
Views: 236

Re: Sound checked Blackvibe 6L6 rebuild to reverb channel without tremelo

For me, it's easiest to spot ultrasonic oscillations by watching power consumption, with the input jack shorted to ground. Watch your idle power consumption (25-50watts baseline?) as you turn up all the controls to max. Your power consumption should not rise.
by xtian
Wed Mar 13, 2024 4:28 pm
Forum: Technical Discussion
Topic: 2024 Monkeymatic Liverpool (nontraditional)
Replies: 48
Views: 1244

Re: 2024 Monkeymatic Liverpool (nontraditional)

Guy77 wrote: Wed Mar 13, 2024 2:53 pmWhat's that cool looking device partially seen below your oscilloscope?
Function generator.