I have a tube amplifier in a Philips tube radio (model B2X 80U) built in 1958. I have completely restored this unit, and currently it is functioning perfectly.
For my next step I would like to add some modern technology to this radio. As it has a (switchable) input for a turntable, I would like to use it for attaching a bluetooth receiver (for streaming music to this radio). I have already made a test setup with a bluetooth receiver board (KRC-86B), and it works.
There's only one problem. The audio signal output from the bluetooth receiver board is not strong enough. It means I have to turn the volume quite high to get a reasonable volume. Which also means that when I switch to tuner, the volume blasts my ears off!
Question:
So my question is: what can I best do to get the right audio signal input?
a) I guess I could put a pre-amp board in between the bluetooth receiver output and the tube radio input. What pre-amp board would you suggest? (I am looking at PCB's not pre amp's in casings, as I wil have to built everything inside the radio)
b) Is it possible to exchange the pre-amp tube in the radio for one that has a stronger pre-amplification?
For my next step I would like to add some modern technology to this radio. As it has a (switchable) input for a turntable, I would like to use it for attaching a bluetooth receiver (for streaming music to this radio). I have already made a test setup with a bluetooth receiver board (KRC-86B), and it works.
There's only one problem. The audio signal output from the bluetooth receiver board is not strong enough. It means I have to turn the volume quite high to get a reasonable volume. Which also means that when I switch to tuner, the volume blasts my ears off!
Question:
So my question is: what can I best do to get the right audio signal input?
a) I guess I could put a pre-amp board in between the bluetooth receiver output and the tube radio input. What pre-amp board would you suggest? (I am looking at PCB's not pre amp's in casings, as I wil have to built everything inside the radio)
b) Is it possible to exchange the pre-amp tube in the radio for one that has a stronger pre-amplification?