Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: BrainDeadAmps on May 16, 2023, 01:38:01 pm
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I'm building a single ended "fenderish" SE Amp. I've never really messed around with Line outs, and decided i'd try it to experiment with running the amp as a pre-amp to drive another amp.
The line out voltage divider was lifted from the "Dizzy Bird" schematic posted on the amp garage.
I finally tested it today and with the internal Speaker still connected to to the amp (#1), running the line out to the input of amp (#2).
With Amp #1's L/O connected to the input jack of Amp #2 with the vol all the way off, I can hear Amp #1 like normal through the internal speaker. When I turn up Amp #2's Vol even just a little bit, the internal speaker through amp#1 cuts out and now Amp#1 is only heard through Amp#2
Where did I go wrong?
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Where did I go wrong?
I'm guessing it's not wired like the schematic you posted. Or maybe you're not telling the whole truth.
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Sluckey, I know it looks like a mess but that's how it's wired. I'm building it as a small combo and have never really used line outs before now.
I know my inicial post is confusing but amp#2 i'm referring to is a small s/s amp.
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Hola amigo,
I have built a small SE rocking amp, low wattage that I use as a preamp to drive a50 watt amplifier and it works great. The important I think is to use a transformer to isolate both amplifiers. If you go to the JENSEN transformers site, you ll find many transformers, their application and lots of schematics.
There is one called: tube amp line out.
Hope that helps
Colas
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I know my inicial post is confusing but amp#2 i'm referring to is a small s/s amp.
Try it with a tube amp. There's nothing on your schematic that should cause that symptom.