1963 Baldwin Tube Amp w/Internal Leslie Speaker

[FretBored]

1963 Baldwin Tube Amp with Internal Leslie Speaker.

Are there any Tube Wizards on here that might help with a couple wiring issues?

Basic Components remaining on this project(Adventure!):

Leslie Cabinet intact wired with 2 speeds. 1st off these are all some big jacks like an 1" wide.) If anybody has ever seen a leslie cab you know what the connectors look like.)

2 AMPS

Main Amplifier which is operational.(does anyone know the, wiring, output of one of these?)

Seperate, Tone Amplifier, by the way 0 output on main amp without it, hooked into the main amp.

2 - 12" Front speakers. 9" Leslie Speaker. All 8 Ohm

Project info:

Got an old Baldwin Organ, Cheap. I get it home open up the back and 1st thing thru my head is, Vintage Guitar Amp with Leslie. Chopped top off Keyboards etc.

Main Amp has quite a lot of tubes:(All light)

4 - 12AX7
6 - 6BQ5
1 - SU4GB

Tone Amp:(All light)

4 - 12AX7


I am getting some sound out of it with just a guitar plugged in. Lots of hum.

I hooked up my PodPro and it sounds amazing, like nothing I have ever heard.

If anybody knows how I might get the guitar to play straight thru this AMP.

There is one jack called "Tone Color" which I somehow think is part of my answer. I say this because when I plug it in, it cranks so loud the garage door shakes.

I know this would be an awesome amp if I could figure out how to boost guitar signal and at the same time cancel hum.

Please PM or list ideas for all.

[FretBored]

Still need some help from anyone that knows something about old tube amps. I bought 4 12AX7 tubes on ebay and I don't think it made a bit of difference?

There has got to be someone that knows something on here. I would love to get this amp thumping so I can build a nice cabinet for it.

[lonewolf]

The sensitivity (input signal level requirement) of the amp is probably designed for a higher or line level signal from the organ. You will probably need to use a preamp like your Pod to boost the guitar signal to that level. Your raw guitar signal is too low and results in a low signal to noise ratio with hum. A strat single coil pickup will make the noise even worse.

Another thing you might want to try to confirm this is a guitar with active (battery powered) pickups.

Sounds to me like you have a sweet power amp for your Pod. If that's the case, you should experiment with the Pod's system output level to try to match it up with the amp's input for the best results.

[FretBored]

Thanks.

I purchased a Behringer Tube Pre Amp with 2 channels. Can be used for Mic or Guitar. Each channel has 1 12AX7 tube. This was a very inexpensive peice of equip. I bought on eBay. I was considering using this to boost my signal.

Some Specs: The Tube Ultragain T1953 is just what you need - an ultralow-noise, discrete, high-end tube mic/line pre-amp with extremely wide bandwidth for an open sound. With twin selected 12AX7 tubes and Ultratube technology, the T1953 delivers extremely musical sound. With servo-balanced inputs and a -10dBV to +4dBu


I wanted to stick with all tubes on this project. But when I received it I put it in my rack for mic use. There are settings for freq. high pass, level and warmth.. Do you think this would be an acceptable pre amp to use?

And to be humble? What is the High Pass switch for?

[lonewolf]

That'll work great!

The high pass filter is a "rolloff" filter for vocals to remove bassiness. When switched off, the preamp has its full frequency response. When switched on, the filter cuts everything below a certain frequency, usually somewhere between 60 and 120 hz, most commonly 80hz. By the same token, it allows frequencies higher than that frequency to pass, thus called a high-pass filter.