Where do you order this stuff? The lunch box design looks perfect for my new harp amp build.bepone wrote: ↑Thu Apr 04, 2024 7:28 pm lunch box is hammond chassis 1441
https://www.hammfg.com/electronics/smal ... assis/1441
Search found 37 matches
- Sun Apr 07, 2024 3:23 pm
- Forum: Technical Discussion
- Topic: USA Source for a 5E3 Deluxe Chassis?
- Replies: 14
- Views: 554
Re: USA Source for a 5E3 Deluxe Chassis?
- Sat Apr 06, 2024 4:05 pm
- Forum: Technical Discussion
- Topic: 0.003uf or 0.0033uf?
- Replies: 8
- Views: 430
- Sat Apr 06, 2024 3:35 pm
- Forum: Technical Discussion
- Topic: 0.003uf or 0.0033uf?
- Replies: 8
- Views: 430
0.003uf or 0.0033uf?
Any difference in installing one for the other in a tone stack?
- Wed Apr 03, 2024 7:49 pm
- Forum: Technical Discussion
- Topic: Good Mods for Harp Amp Designs
- Replies: 3
- Views: 164
Re: Good Mods for Harp Amp Designs
Fairly stock with a large treble cap to dump more range. If it is muddy, a smaller and smaller early stage coupling cap. This can depend on speaker as much as anything. Celestions get your target bandpass without doing anything to a 5e3. What mic do you really like? SM57 with boiled out transformer...
- Wed Apr 03, 2024 5:09 pm
- Forum: Technical Discussion
- Topic: Good Mods for Harp Amp Designs
- Replies: 3
- Views: 164
Good Mods for Harp Amp Designs
I would like to build a new amp based on the 5E3 or Princeton design that is more geared toward harp use. Harp has some special challenges from the standard guitar circuit designs. The popular purpose-built amps lean toward the bass frequencies without being boomy or flabby, and generally have lower...
- Mon Apr 01, 2024 4:25 pm
- Forum: Technical Discussion
- Topic: Lead Dress for Star Grounding
- Replies: 5
- Views: 267
Lead Dress for Star Grounding
I'm considering star grounding my next amp (5E3) and was wondering. Since star grounding can mean more wires back to the post, it could create a spider web in the chassis. Does it make sense to dress the wires together, perhaps twisting them with branches off to the circuit points and back to the gr...
- Sat Mar 23, 2024 5:04 pm
- Forum: Technical Discussion
- Topic: Heater Wire Ground
- Replies: 30
- Views: 1095
- Sat Mar 23, 2024 4:51 pm
- Forum: Technical Discussion
- Topic: Heater Wire Ground
- Replies: 30
- Views: 1095
Heater Wire Ground
If the power transformer has a center tap to ground for the 6.3 VAC filament power, would it still be a good idea to put the dual 100 ohm resisters from the pilot light to ground, or would this be dumb and cause problems?
- Wed Mar 20, 2024 8:50 pm
- Forum: Technical Discussion
- Topic: Advice for Silent Amp
- Replies: 5
- Views: 422
- Wed Mar 20, 2024 5:27 pm
- Forum: Technical Discussion
- Topic: Advice for Silent Amp
- Replies: 5
- Views: 422
Advice for Silent Amp
I'm on my third build now, and I want to step up the quiet a bit from my first two. I've read here and other places that most of the hiss and buzz happens at the first preamp stage, and that I should try to mitigate that through grounding, routing, and component selection. Grounding and routing I th...
- Sat Feb 24, 2024 12:47 am
- Forum: Technical Discussion
- Topic: Hiss on Hoffman Princeton Reverb Build
- Replies: 3
- Views: 134
Re: Hiss on Hoffman Princeton Reverb Build
When you have no cable in a input jack it is shorted and the first gain stage is not functioning from the grid back to the jack. I would then suspect a bad noisy resistor, either on the input jack or the ground reference which is usual a high value like a 1 meg. And yes even new resistors can be qu...
- Fri Feb 23, 2024 9:07 pm
- Forum: Technical Discussion
- Topic: Hiss on Hoffman Princeton Reverb Build
- Replies: 3
- Views: 134
Hiss on Hoffman Princeton Reverb Build
Well, I have most of my issues with my build resolved. Thanks for those who advised me on my fuse blowing and grounding questions. My amp seems to function properly. The only nagging thing left is the hiss. It varies up and down with volume, and seems a little much compared to my professionally buil...
- Thu Feb 22, 2024 8:47 pm
- Forum: Technical Discussion
- Topic: 6SJ7 Gain Factor Comparison
- Replies: 5
- Views: 237
Re: 6SJ7 Gain Factor Comparison
Yes. I'm looking for where it falls on the scale against triode preamps as a comparison. This isn't for anything in design, just wondering...
- Thu Feb 22, 2024 7:54 pm
- Forum: Technical Discussion
- Topic: 6SJ7 Gain Factor Comparison
- Replies: 5
- Views: 237
6SJ7 Gain Factor Comparison
Where does the 6SJ7 pentode tube fall in the gain factor scale as compared to typical triode tubes?
- Thu Feb 22, 2024 1:14 am
- Forum: Technical Discussion
- Topic: Keep Blowing Fuses - Hoffman Princeton Reverb
- Replies: 9
- Views: 226