Search found 108 matches
- Sun Mar 10, 2024 12:15 pm
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2663
Re: #002 Steel String Singer - almost there
... popcorn.jpeg Well, I think I need something stronger. I got a terrible hum: https://photos.app.goo.gl/GURBzRK223r8BSjd8 It's there, even if I pulled all the preamp tubes. When I pull the first PI tube, it's gone, no wonder. Ok, what's different to Ryans layout drawing: - jumpered all grounds of...
- Sat Mar 09, 2024 6:10 pm
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2663
Re: #002 Steel String Singer - almost there
Done, except the FET and Reverb footswitch connector.
I power it up tomorrow. The last 2 solder joints had to be redone twice. I no more in the right condition for high voltage hassle.
Cheers
Gerhard
I power it up tomorrow. The last 2 solder joints had to be redone twice. I no more in the right condition for high voltage hassle.
Cheers
Gerhard
- Sat Mar 09, 2024 6:58 am
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2663
#002 Steel String Singer - almost there
Hello all, it was a lot of work, but also fun to build. IMG_20240308_190744.jpg IMG_20240308_210511.jpg https://lh3.googleusercontent.com/pw/AP1GczMF7rMrTJzqeu7vyBaPH8CmYT0TXLAXxd_3ktaejlP4lbYmxRPSPbIZLGIvJAoCLigZSGQSHi3gYYbGI8djsFtTvFybqAr9aaYAaCrMEB9O4ZGsAzIrKmWE20AxwchahwGAftA98BQa3wyrg273gxM=w12...
- Sat Mar 02, 2024 3:19 pm
- Forum: Dumble Discussion
- Topic: Reverb Transformer
- Replies: 1
- Views: 308
Reverb Transformer
Hello, I purchased the Vibro-King reverb transformer mentioned in Ryans non-mouser BOM. https://www.tube-town.net/ttstore/en/hammond-1750b-for-fender-reverb-024038.html Reverb Driver 024038 for Vibro-King Pri: 5482 Ohm Sec: 8 Ohm Power: 10 Watt It is slightly bigger and does not line up with the hol...
- Thu Feb 29, 2024 8:21 pm
- Forum: Dumble Discussion
- Topic: SSS heater lead dress
- Replies: 12
- Views: 643
Re: SSS heater lead dress
That's as good as I can make it.
I think, it should work.
Cheers
Gerhard
I think, it should work.
Cheers
Gerhard
- Wed Feb 28, 2024 9:44 pm
- Forum: Dumble Discussion
- Topic: SSS heater lead dress
- Replies: 12
- Views: 643
Re: SSS heater lead dress
Thank you all, for your quick reply. I think I go with option 3.
Cheers
Gerhard
Cheers
Gerhard
- Wed Feb 28, 2024 9:35 pm
- Forum: Dumble Discussion
- Topic: SSS heater lead dress
- Replies: 12
- Views: 643
- Wed Feb 28, 2024 4:56 pm
- Forum: Dumble Discussion
- Topic: SSS heater lead dress
- Replies: 12
- Views: 643
- Wed Feb 28, 2024 4:06 pm
- Forum: Dumble Discussion
- Topic: SSS heater lead dress
- Replies: 12
- Views: 643
SSS heater lead dress
Greetings!
I'm just thinking, if it is a good idea, if I use Valve Wizards suggestion (pic 3)
on the reverb driver tube:
Maybe it's ok, but I wanna know for sure. I don't want to rip everything apart afterwards...
Thanks.
Gerhard
I'm just thinking, if it is a good idea, if I use Valve Wizards suggestion (pic 3)
on the reverb driver tube:
Maybe it's ok, but I wanna know for sure. I don't want to rip everything apart afterwards...
Thanks.
Gerhard
- Tue Aug 29, 2023 4:30 am
- Forum: Dumble Discussion
- Topic: 100w 2nd Gen. ODS build
- Replies: 25
- Views: 8153
Re: 100w 2nd Gen. ODS build
Hey everybody, been a little while. I've almost got all my parts together but had a quick question about the boards. I got a steel chassis from Modulus Amplification and I'm gonna have to make my own board templates as the mounting centers are a little weird. (the preamp board mounting centers are ...
- Thu Oct 20, 2022 6:54 pm
- Forum: Technical Discussion
- Topic: Reverb Tank ID?
- Replies: 15
- Views: 1287
Re: Reverb Tank ID?
Just stumbled over this topic. Hope this helps anyway.
Gerhard
Cheers Gerhard
- Sat Aug 27, 2022 9:57 pm
- Forum: Dumble Discussion
- Topic: #124 Power Transformer?
- Replies: 13
- Views: 1611
Re: #124 Power Transformer?
Tell me Gerhard, do you think the stated 1.5A rating is for both 6V and 12V supplies? The label on the TX in the photo, in the datasheet, says 'sec 4: 0V-6V-12V @ 1A...' From what I suspect from the datasheet, it should provide 1,5A @ 6 and 12 V. In case of heater supply, a Twin has 3 more preamp t...
- Fri Aug 26, 2022 8:25 pm
- Forum: Dumble Discussion
- Topic: #124 Power Transformer?
- Replies: 13
- Views: 1611
Re: #124 Power Transformer?
I used a Hammond 290FEX (FX for 120VAC). Works perfect for me. But I wish it has a 12V winding for the relais power. If there is a next time, I would use this one instead: https://www.tube-town.net/ttstore/tt-dumble-style-100-watt-powertransformer.html It can provide more heater current and has the ...
- Wed Jul 20, 2022 10:46 am
- Forum: Dumble Discussion
- Topic: Hey Robben, where's your Dumble?
- Replies: 75
- Views: 20074
Re: Hey Robben, where's your Dumble?
Does 102 still have F&T power supply capacitors? I have never liked the way they tend to color the sound, always feels like the magic midrange gets sucked out. I have a sneaking suspicion that swapping those out with something more appropriate would restore some of the lost qualities I am missing ....
- Sat Jul 16, 2022 9:08 pm
- Forum: Dumble Discussion
- Topic: Before I Fire It Up... (Fender PA100 Conversion)
- Replies: 26
- Views: 3056
Re: Before I Fire It Up... (Fender PA100 Conversion)
Very nice!
That's a lot of tubes in there. Heater current might be a bit high with 7 x 12AX7 for a Twin PT?
But what I'm talking, you must know it better than me.
Cheers
Gerhard
That's a lot of tubes in there. Heater current might be a bit high with 7 x 12AX7 for a Twin PT?
But what I'm talking, you must know it better than me.
Cheers
Gerhard