Search found 977 matches

by Stephen1966
Sat May 11, 2024 2:11 pm
Forum: Dumble Discussion
Topic: ODS 102 with 2x KT88s and built-in Dumbleator
Replies: 12
Views: 406

Re: ODS 102 with 2x KT88s and built-in Dumbleator

Yup, I keep changing my mind. I'm thinking I'd like to build it leaving space for a classic Fender 2-tube reverb before the loop. Sort of a future expansion idea after I've played the regular 102 circuit and can judge properly if the reverb circuit compromises anything by being added. May 11.jpg I'...
by Stephen1966
Sat May 11, 2024 1:40 pm
Forum: Dumble Discussion
Topic: Robben Ford & His Dumble Overdrive Special
Replies: 8
Views: 198

Re: Robben Ford & His Dumble Overdrive Special

A few things stand out about this interview. First, there can never be enough examples of these amps being played, and I think if you have good sound, good headphones perhaps, you can get a pretty good sense of the tone and presence of the amp. I say presence in the sense of the sheer sound pressure...
by Stephen1966
Fri May 10, 2024 3:48 pm
Forum: Dumble Discussion
Topic: Dumble ODS 102 Mistakes and Recovery
Replies: 8
Views: 290

Re: Dumble ODS 102 Mistakes and Recovery

I have spoken to the main man at Modulus and he can build a custom OT and PT to the exact spec. He said however the idea by using M6 laminations is to reduce the size of the PT which im not too bothered about. I have sent the schematic for the 12v tap so its a win win. I wanted to keep the main par...
by Stephen1966
Fri May 10, 2024 11:09 am
Forum: Dumble Discussion
Topic: Couple of #183 derivatives
Replies: 70
Views: 10780

Re: Couple of #183 derivatives

The ticking is some kind of internal arcing? Yes, and the voltage drops are there too in the same time.. on variac if i lower the input voltage, then in one moment is ok situation, but on nominal looks like is going to the white smoke. Chasing the ghost :mrgreen: Well you've got at least one dud th...
by Stephen1966
Fri May 10, 2024 11:06 am
Forum: Dumble Discussion
Topic: Dumble ODS 102 Mistakes and Recovery
Replies: 8
Views: 290

Re: Dumble ODS 102 Mistakes and Recovery

Haha I like planning for a lifetime! its what I do for a job (Architecture). Yeah I think see it as an investment. I have one DMM but the capacitor test isnt sensitive enough and it does do Milivolts. Would the 716P and 6PS make much of a difference? I just checked my stash of Orange Drops and they...
by Stephen1966
Fri May 10, 2024 10:07 am
Forum: Dumble Discussion
Topic: Couple of #183 derivatives
Replies: 70
Views: 10780

Re: Couple of #183 derivatives

bepone wrote: Fri May 10, 2024 6:38 am faulty caps video:
https://drive.google.com/file/d/18ELqsP ... sp=sharing
The ticking is some kind of internal arcing?
by Stephen1966
Thu May 09, 2024 12:52 pm
Forum: Dumble Discussion
Topic: Dumble ODS 102 Mistakes and Recovery
Replies: 8
Views: 290

Re: Dumble ODS 102 Mistakes and Recovery

Hi Clive, no worries. Many of us have busy lives so a response can sometimes take days, it's normal. We don't take it as a Sign of anything! Also, you don't need to worry about posting messages to us when you add updates to your thread. When anyone places a comment in your thread they are automatica...
by Stephen1966
Thu May 09, 2024 9:03 am
Forum: Dumble Discussion
Topic: ODS 102 with 2x KT88s and built-in Dumbleator
Replies: 12
Views: 406

Re: ODS 102 with 2x KT88s and built-in Dumbleator

... Cool! Thanks for chiming in. I'm exploring around in that thread of yours now. So perhaps you addressed this, but I see you have 4 jacks for your loop. Looking at your schematic, it appears you are giving a passive and an active loop option. Have you found that you ever use the passive loop? I'...
by Stephen1966
Wed May 08, 2024 4:01 pm
Forum: Dumble Discussion
Topic: ODS 102 with 2x KT88s and built-in Dumbleator
Replies: 12
Views: 406

Re: ODS 102 with 2x KT88s and built-in Dumbleator

... I actually haven't been able to find any other schematics at all for how anyone has incorporated a built-in Dumbleator. ... I've used the dumbleator in both my Skyliner and the Delta amps I've documented here. The cap values are a little different than standard for modified filtering but the ba...
by Stephen1966
Wed May 08, 2024 12:41 pm
Forum: Dumble Discussion
Topic: Dumble ODS 102 Mistakes and Recovery
Replies: 8
Views: 290

Re: Dumble ODS 102 Mistakes and Recovery

After talking to you guys on this forum, I have come to the conclusion you are all the most useful and nicest people to do with amps. Since my last post I have resolved quite alot of choices, not least what transformers I am going to use. (I am going to use Modulusamplification PT & OT). I have ari...
by Stephen1966
Sun May 05, 2024 6:11 pm
Forum: Fender Discussion
Topic: Conductive boards again.
Replies: 14
Views: 574

Re: Conductive boards again.

Mark wrote: Sun May 05, 2024 1:32 pm The damn things need to be tested with a megger...
I had a look around and these are a good price if you're going to be needing them regularly

KIYORITSU
ANALOG INSULATION / CONTINUITY TESTER
MODEL 3132A

https://www.kew-ltd.co.jp/en/products/detail/00973/
by Stephen1966
Sun May 05, 2024 6:01 pm
Forum: Technical Discussion
Topic: JJ E34L (brand new) emitting a white light - has anyone seen this before?
Replies: 5
Views: 155

Re: JJ E34L (brand new) emitting a white light - has anyone seen this before?

With just one image to go off it looks to be arcing. You could forward the photo to the supplier but only as preface to returning it anyway. It's probably part of a matched set as well, yes? In such a case, it might be necessary to return the whole set. Best to contact the supplier and take it up wi...
by Stephen1966
Sat May 04, 2024 4:16 pm
Forum: Fender Discussion
Topic: Conductive boards again.
Replies: 14
Views: 574

Re: Conductive boards again.

You have a nice collection of carbon comp resistors there and though it looks like the boards are the real problem here was an interesting commentary on reconditioning the carbon resistors from Hi Fi Collective: Being made of organic material, they do have the tendency to absorb water from the atmos...
by Stephen1966
Sat May 04, 2024 1:24 pm
Forum: For Sale/Trade
Topic: Amp parts for sale
Replies: 19
Views: 5570

Re: Amp parts for sale

Everyone, I thought I could handle selling stuff but that proved impossible with my health. My heart has decreased Left Ventricle ejection fraction at 36% so not getting enough air, of course medication increased so breathing a lot better now. Next is to tackle my blood sugar levels so I don't slee...
by Stephen1966
Sat May 04, 2024 8:22 am
Forum: Fender Discussion
Topic: Conductive boards again.
Replies: 14
Views: 574

Re: Conductive boards again.

I admit I am curious... Are you even going to try to resurrect this beast? How do you even begin to evaluate whether an amp like this is worth saving? And to what lengths you might go to preserve the legacy value of the original? Yes, I want to save the amp, I don’t know what it will take to get it...