Search found 308 matches
- Wed May 08, 2024 3:41 am
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
Something I noticed and am curious about. The green wire goes to the 220k OD entrance, then to a 33k then to OD1 input. The junction of the resistors is tied to ground on the layout. Is this really supposed to be grounded? With it grounded the signal is only passed by the 1m2 resistor.
- Tue May 07, 2024 8:40 pm
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
Never mind...
- Tue May 07, 2024 2:41 pm
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
Typically when I check voltages I have a dummy load connected to the output. Recently I had a speaker connected and when I checked plate voltages on the preamp I noticed a POP sound as I touched the probe to the point I was checking. Maybe you can use this as a method to narrow down where the signal...
- Tue May 07, 2024 4:07 am
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
I'm not real familiar with 2nd Gen. Is it supposed to have an OD entrance trim pot? Unable to see under the board but something seems off to me in that area. Where does the green wire land?
- Tue May 07, 2024 3:58 am
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
Thanks!
Looks like V1 pin 5 (heater) has no solder. Not sure this is enough to cause no signal. Still looking....
Looks like V1 pin 5 (heater) has no solder. Not sure this is enough to cause no signal. Still looking....
- Tue May 07, 2024 3:44 am
- Forum: Dumble Discussion
- Topic: ODS Inspired Build; #102 Values with Buffered FX Loop
- Replies: 21
- Views: 1080
Re: ODS Inspired Build; #102 Values with Buffered FX Loop
Quick update. Changed power supply resistors to Dumbleator tube and voltages fell into line. This helped the hum but changing the tube out helped a bunch more. Turns out I had a large plate in it, a lower gain tube really helped. I think putting it in a cabinet will help a lot more. The Dumbleator i...
- Tue May 07, 2024 2:53 am
- Forum: Dumble Discussion
- Topic: My take on a 2nd Gen ODS
- Replies: 68
- Views: 2003
Re: My take on a 2nd Gen ODS
What's the value of the resistor on your input jack? Check it with a meter. Best I can tell (small phone screen) color code is Brn-Blk-Red.
- Tue May 07, 2024 2:26 am
- Forum: Dumble Discussion
- Topic: Starting to populate the chassis....
- Replies: 109
- Views: 4722
Re: Starting to populate the chassis....
Will check all the resistors making sure they're the correct ones, easy to get mixed up.....so many choices... Brian, I received my electronics training in the '80's. I STILL verify each and every resistor with my meter prior to installing it because I suck at reading the color codes-its the multip...
- Thu May 02, 2024 11:35 pm
- Forum: Dumble Discussion
- Topic: The Much Anticipated (?) Bluesmaster Build Thread
- Replies: 30
- Views: 1021
Re: The Much Anticipated (?) Bluesmaster Build Thread
You mean like this?
Yes I agree, it absolutely works great!
Yes I agree, it absolutely works great!
- Sat Apr 27, 2024 2:39 am
- Forum: Dumble Discussion
- Topic: Starting to populate the chassis....
- Replies: 109
- Views: 4722
Re: Starting to populate the chassis....
+1martin manning wrote: ↑Sat Apr 27, 2024 12:54 am You will not regret investing $120 in a Weller WE1010NA or Hakko FX888D-29BY soldering station.
Time to move up from the $15 iron. You'll be amazed at the difference.
- Sat Apr 27, 2024 2:28 am
- Forum: Dumble Discussion
- Topic: The Much Anticipated (?) Bluesmaster Build Thread
- Replies: 30
- Views: 1021
Re: The Much Anticipated (?) Bluesmaster Build Thread
Martin got it right, it's a linear (physical) resistive element with the wiper on a screw (worm drive). 25 turns covers full range, in this case 500k. Doing the math 1 turn equals 20k, 1/2 turn equals 10k, etc... As you can see very fine adjustments can be made-much finer control than with a single ...
- Fri Apr 26, 2024 1:59 pm
- Forum: Dumble Discussion
- Topic: Starting to populate the chassis....
- Replies: 109
- Views: 4722
Re: Starting to populate the chassis....
This is like asking what the best car brand is, everyone has their own preference. I recommend finding a good soldering station with temperature control. Higher wattage will help with warm-up time and overall temperature stability as you solder. A variety of tips is helpful, larger tips store more h...
- Tue Apr 23, 2024 6:01 pm
- Forum: Dumble Discussion
- Topic: Dumble ODS 102 build
- Replies: 15
- Views: 519
Re: Dumble ODS 102 build
For the Cap Can opening try these covers Sadly im based in the UK, my mate sent me some cracker barrel pancake mixture to my home in London once and I was hounded by FedEx to pay £37... the mixture was $9. UK and US trade is not great. Sorry to hear about the bad trade situation. Those plugs are fa...
- Tue Apr 23, 2024 2:46 pm
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 12
- Views: 578
Re: Illinois brand capacitors still bad?
Admittedly higher ratings are better, but Sprague Atoms are 85°C rated.Littlewyan wrote: ↑Mon Apr 22, 2024 8:57 pm Were the capacitors themselves bad? Or was it just that Fender used the lower temperature 85Degree ones?
85°C = 185°F
- Tue Apr 23, 2024 2:36 pm
- Forum: Dumble Discussion
- Topic: Dumble ODS 102 build
- Replies: 15
- Views: 519
Re: Dumble ODS 102 build
For the Cap Can opening try these covers