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Adding 8 ohm output to Vox AC30TB6
I have a "Korg era" 1993 Vox AC30TB6. I read on a forum that this amp's output transformer has an unused 8 ohm tap. Can anyone verify this? I was...
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Peavey Classic 30 Output Xformer substitute Help
Hi Guys,
I got a Peavey Classic 30 in the shop with a blown output xformer.
Called Peavey Parts, "Sorry no longer...." etc...
...
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Unequal resistance on output transformer primary
I'm fixing a Beltone AP-22 amp which has a very low output. There are a couple of things that I suspect might be the problem and one is the output transformer....
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Silvertone 1484 Output Transformer Troubleshooting
Hi folks. I'm working on repairing a Silvertone 1484 twin twelve. Quick backstory: this beast had a low and distorted output volume when I received it. Tubes...
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Loud Hum in 1974 Twin Reverb
Hello, people, I did a bad thing today and am feeling quite a bit of anger towards myself. I thought I could fly close to the sun and replace my 1974 silverface...
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Epiphone Valve Junior OT upgrade -- help please???
Just replaced the OT in my Valve Junior head -- I believe it's version 3 (black PCB).
Using a ClassicTone 40-18030. Got everything wired up, but tubes...
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Alamo paragon 2575 help
Hey everyone,
I have an ALAMO Paragon Bass Amplifier model #2575 stamped in NOV 1974.
Picked up the head and cab in mid 2000's...
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Two-Stroke w/ Doberman tranny
Hi all,
I'm in the process of finishing a Two-Stroke amp as detailed in Dave Hunter's Guitar Amp Handbook. However, I'm substituting a Doberman 20...
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JCM 800 build output transformer hum
I've been building a JCM 800 based on Kevin O'Connors TUT3 project. After the usual debugging and tweaking based on the teachings of Aiken amps and Merlin...
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Played tube amp without speaker connected.
Hi, I was recently working on finding a way to get my Bugera V22 amp signal to a direct box To do this I was running from my effects loop straight to the...
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Questions concerning OT measurements
Hey, guys- I've got a Laney AOR 50w series 1 that a friend dropped
off with me that's not getting any signal at all. The only way I can
get...
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Math behind OT impedance rules-of-thumb?
Hi. I've seen all over the forum(s) (and tube literature as well) some ROT , or typical design values for OT impedance for each tube plate resistance....
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Output Power
Hi,all
I'm currently in the process of building a clone of a Vox AC-30.
While I was buying the output transformers i thought it would be smart...
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How do I calculate guitar amp output power
Hello!
I am new here, and would like to build my first tube amp. I have electronics background and fabrication skills from my day job, but...