Search found 1662 matches

by erwin_ve
Sat Apr 06, 2024 7:30 am
Forum: Dumble Discussion
Topic: SSS CF Driver Compression Questions
Replies: 37
Views: 2907

Re: SSS CF Driver Compression Questions

A part of the compression is coming from the LNFB loops. Especially when you drive the first volume pot a little more.
Not all SSS are the same as are the LNFB loops.
Which one do you have?

Erwin
by erwin_ve
Mon Mar 25, 2024 11:26 am
Forum: Dumble Discussion
Topic: Bluesmaster HRM question:
Replies: 90
Views: 5712

Re: Bluesmaster HRM question:

I was talking about the front panel pots; I hadn’t seen any real variation on the HRM board. I’m on a quest to better understand how the composition of the primary tone stack lays the foundation for an amp’s character and saw all the variations in the Bluesmaster; so I thought it might be a good le...
by erwin_ve
Mon Mar 25, 2024 8:25 am
Forum: Dumble Discussion
Topic: Bluesmaster HRM question:
Replies: 90
Views: 5712

Re: Bluesmaster HRM question:

The Bluesmaster tonestack is not a skyliner nor a classic tonestack. While a skyliner might be low mid heavy, the Bluesmaster might be low bass heavy. Some might shave off some bass pot value to get a more usually pot swipe setting. Paying attention to the first tube voltages is imo the best solutio...
by erwin_ve
Wed Mar 20, 2024 3:42 pm
Forum: Dumble Discussion
Topic: 2nd gen ODS with Erwin chassis.
Replies: 30
Views: 2036

Re: 2nd gen ODS with Erwin chassis.

Really enjoying this amp. In the meantime I have made a headshell and combo cab (just need to make a front baffle to complete). Details of the circuit to date to follow, including a master (hope Erwin doesn’t mind me drilling his lovely chassis :? ). Lovely and great looking amp. That master is sim...
by erwin_ve
Tue Mar 19, 2024 8:42 am
Forum: Dumble Discussion
Topic: Starting to populate the chassis....
Replies: 114
Views: 7518

Re: Starting to populate the chassis....

Hi Brian, we are ok. I was just flabbergasted, but as you pointed out it was just to be sure. I'm ok with that.

Erwin
by erwin_ve
Sat Mar 16, 2024 1:32 pm
Forum: Dumble Discussion
Topic: Starting to populate the chassis....
Replies: 114
Views: 7518

Re: Starting to populate the chassis....

Dragon1 wrote: Sat Mar 16, 2024 1:31 pm I can, was just running out the door and this was easier.
Again, thanks…
Wow.... speechless
by erwin_ve
Sat Mar 16, 2024 1:27 pm
Forum: Dumble Discussion
Topic: Starting to populate the chassis....
Replies: 114
Views: 7518

Re: Starting to populate the chassis....

Dragon1 wrote: Sat Mar 16, 2024 1:17 pm So where do my marked “B” wires go, and thank you for your answer on the last question
Brian
Coax a goes to the level pot with marked A.
Coax B goes to the ratio pot with marked B

Can you read a schematic?
by erwin_ve
Sat Mar 16, 2024 1:25 pm
Forum: Dumble Discussion
Topic: C-lator hum
Replies: 208
Views: 7096

Re: C-lator hum

Your wall socket has a ground tab?
by erwin_ve
Sat Mar 16, 2024 12:52 pm
Forum: Dumble Discussion
Topic: C-lator hum
Replies: 208
Views: 7096

Re: C-lator hum

Charlie Wilson wrote: Sat Mar 16, 2024 1:54 am Are potentiometer casings referenced to ground?
CW
Did you check?
by erwin_ve
Sat Mar 16, 2024 5:35 am
Forum: Dumble Discussion
Topic: Starting to populate the chassis....
Replies: 114
Views: 7518

Re: Starting to populate the chassis....

I'll give it a shot, Brian Question, do the two coax cables from location "A" (black marker) go to location "B" No, those are going to the front panel "level"(marked A) and "ratio"(marked B) pots. For a good understanding of the layout, you can reference the schematic that is in the files section f...
by erwin_ve
Wed Mar 13, 2024 3:35 pm
Forum: Dumble Discussion
Topic: #002 Steel String Singer - almost there
Replies: 69
Views: 3009

Re: #002 Steel String Singer - almost there

Lothy wrote: Wed Mar 13, 2024 3:11 pm
martin manning wrote: Wed Mar 13, 2024 2:34 pm Can you get 2N4416A? Mouser carries that one, should be fine for traditional D FET boost.
Yes but 20 bucks for the delivery. No way...
Ill PM you on this.
by erwin_ve
Tue Mar 12, 2024 12:36 pm
Forum: Dumble Discussion
Topic: 2nd Gen Build Started (that didn’t take long…)
Replies: 316
Views: 9713

Re: 2nd Gen Build Started (that didn’t take long…)

Looks terrific! Good job on the footswitch, looks great.
Cheers!

Erwin
by erwin_ve
Mon Mar 11, 2024 6:34 pm
Forum: Dumble Discussion
Topic: #002 Steel String Singer - almost there
Replies: 69
Views: 3009

Re: #002 Steel String Singer - almost there

That's a good question, since some of the filter components are on the boards. Maybe Erwin can look into that? I would be happy to check for problems, but I don't have his pcb files or even a picture of the traces and component positions. Maybe they are the same as Ryan's eyelet board layout? Ill d...
by erwin_ve
Mon Mar 11, 2024 4:00 pm
Forum: Dumble Discussion
Topic: OTS #102 to #060 (without reverb)?
Replies: 51
Views: 2630

Re: OTS #102 to #060 (without reverb)?

ijedouglas wrote: Mon Mar 11, 2024 2:47 pm
ynor wrote: Mon Mar 11, 2024 2:27 pm Is there any significant differences between the two menioned above (TT 1uF 100V or Mallory 1uF 63V)?
That is difficult to answer and the only way to know would be to try both and see which one you like.
And maybe try a tantalum too?