I don’t understand chancing running the 6K6 outputs.
The difference in the output wattage between these and a 6v6 with cathode bias and in push pull will not change the SPL of the amp by much if that’s your main goal.
Search found 4597 matches
- Mon May 20, 2024 8:35 pm
- Forum: Technical Discussion
- Topic: OT Primary Question
- Replies: 6
- Views: 176
- Sat May 18, 2024 11:30 am
- Forum: Technical Discussion
- Topic: Princeton Reverb tremolo squeal
- Replies: 5
- Views: 128
Re: Princeton Reverb tremolo squeal
Is the wire that feeds that pot running anywhere near either of the PI output coupling caps?
- Sat May 18, 2024 11:21 am
- Forum: Technical Discussion
- Topic: Replace overdrive pedal with real tube?
- Replies: 7
- Views: 252
Re: Replace overdrive pedal with real tube?
Since your now unused tube is somewhere down stream of the first gain stage of the amp if you implement what your thinking of doing you will more then likely have a oscillating monster on your hands, especially if you only use one section of that tube since that will change the phase of the whole am...
- Wed May 15, 2024 9:03 pm
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 29
- Views: 1178
Re: Illinois brand capacitors still bad?
Don’t forget with these great little testers to discharge the cap before testing.
My co worker killed is tester 3 days after he built it with a charged up 450 volt cap.
You need to confirm after discharging that there is no more voltage left in the cap then the battery that powers it.
My co worker killed is tester 3 days after he built it with a charged up 450 volt cap.
You need to confirm after discharging that there is no more voltage left in the cap then the battery that powers it.
- Wed May 15, 2024 2:10 pm
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 29
- Views: 1178
Re: Illinois brand capacitors still bad?
Here’s a 1000uf 50v Rubycon that swollen and starting to leak and it still test out at only .94 ohms, unfortunately it’s only 5 years old.
- Tue May 14, 2024 12:21 pm
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 29
- Views: 1178
Re: Illinois brand capacitors still bad?
Yes, sorry, more like ten times!
I had the morning coffee brewing but none yet to start the brain up.
I had the morning coffee brewing but none yet to start the brain up.
- Tue May 14, 2024 11:20 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 29
- Views: 1178
Re: Illinois brand capacitors still bad?
Thanks for this test out and post, and yes that’s over a 10% different which is a lot!
- Sat May 11, 2024 11:19 am
- Forum: Technical Discussion
- Topic: Can I Parallel 2 Mosfets in VVR?
- Replies: 31
- Views: 784
Re: Can I Parallel 2 Mosfets in VVR?
They also need to be mounted right next to each other so that all wire length used is the shortest. Also I consider the leads of semiconductors as part of its built in heat sink and as such contributing to the items wattage rating. For Zener diodes used in tube amps ( especially if near the output t...
- Fri May 10, 2024 10:05 am
- Forum: Technical Discussion
- Topic: ID this tube?
- Replies: 7
- Views: 242
Re: ID this tube?
It rang a bell to me since I have had a few great Marconi tubes over the decades, and instead of diving into one of my amps that has one in it to get a photo for you I went to the Tube World Express site for a photo.
- Thu May 09, 2024 10:01 pm
- Forum: Technical Discussion
- Topic: Two 20 watt amps in one chassis - layout/grounding
- Replies: 17
- Views: 514
Re: Two 20 watt amps in one chassis - layout/grounding
To have more front panel real estate you might consider stacked pots for two of the tone controls.
To get a nice leg up on a two channel amp layout in one chassis you might want to check out the schematic of a big stereo tube amp like a HH Scott 272.
To get a nice leg up on a two channel amp layout in one chassis you might want to check out the schematic of a big stereo tube amp like a HH Scott 272.
- Thu May 09, 2024 3:37 pm
- Forum: Technical Discussion
- Topic: ID this tube?
- Replies: 7
- Views: 242
Re: ID this tube?
Due to the large area of white lettering that tube has and the size and shape of the plates and the round getter I think this is what your tube is, or atleast the brand that it is.
- Thu May 09, 2024 9:49 am
- Forum: Technical Discussion
- Topic: Bad power?
- Replies: 10
- Views: 305
Re: Bad power?
It would not be the first time that a utility step down transformer out on a pole took a indirect hit of lightning and all the utility company did was replace whichever fuse blew, leaving a somewhat defective transformer out on the pole. If you know any of your neighbors there see if you can try a a...
- Wed May 08, 2024 10:10 am
- Forum: Technical Discussion
- Topic: Bad power?
- Replies: 10
- Views: 305
Re: Bad power?
Poor or no ground would not effect a amps distortion caractoristics .
- Tue May 07, 2024 9:10 pm
- Forum: Technical Discussion
- Topic: Bad power?
- Replies: 10
- Views: 305
Re: Bad power?
Plug a voltmeter into the other outlet in that wall socket to
1st see what you have for wall voltage .
2) to see if it drops down when you play the amp.
1st see what you have for wall voltage .
2) to see if it drops down when you play the amp.
- Tue May 07, 2024 10:13 am
- Forum: Technical Discussion
- Topic: Not Amp Stuff, but Speaker Dope...
- Replies: 1
- Views: 95
Re: Not Amp Stuff, but Speaker Dope...
That dope is a high voltage insulating lacquer and will dry too stiff even though it may say its flexible. You want a latex product . You can use very thinned out white Elmer’s glue applying a little at a time, or better yet this product. Either way test it the stuff out on a cheap old blown 6 or 8”...