Hello Guys,
I am working on a special project for a custom car The radio started life as 1946 ford zenith car radio but being size and new electric wipers installed the original radio had to be cut off making it like 4 inches deep So we decided to install a bluetooth amp .
So what need to do is to change the control from 500k to 1k linear control
Here is the photo of the control which is made by CTS and I did order Few CTS Pots from mouser but none of them have the right shaft or able dual control.
Anyway I could use your guys help building this control even if I need to get Potentiometer from different company like Alps I need the same set up two Potentiometer plus on/off switch and I have both the brass control and that later steel shaft one .
Sincerely Richard
Give Mark O a call he can more than likely hook you up even if it's just snap in shafts or whatever.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
This may be ugly, but cutting down a radio chassis from about 8" to about 4" is not pretty either. Are you merely using the front of the radio as a filler for the hole in the dash and a support for the control or did you actually preserve the radio RF / IF / Detector section of the radio? Are you opening the Bluetooth amp and running wires from the volume control for the amp to whatever control you are using? Do you need only volume or are you expecting the tone control to function also?
I assume that the BT Amp is Stereo but is controlling both channels with some sort of voltage control input, and this is why you need a 1K linear pot. If you need a pot element for each channel, then the tone control also has to be converted.
Judging from the pic, you are almost there. I see little difference between the element of the tone control that you disassembled and the new pot that you disassembled other than the shaft hole in the element. Are the outside dimensions the same or is the new wafer smaller? Difficulty is the stacked pots. If you can open the volume (there may be enough room to bend the tangs back) and retract the shaft, you should be able to remove the 500K Audio pot element and add the 1K element. An alternative is to use a 1/4" coupling (available from a good hardware store or (gulp) Home Depot), cut down the shaft, glue them together, mount the new pot and use the coupling to join the shaft. The volume and tone controls will be permanently joined together and rotate together. This is a last resort, so make up a dummy shaft first to make sure that this will work. A professional custom pot maker may need the original shaft unmolested if this would not work.
For any alternative, pix of the radio (or its remains) are needed. Pix of the BT Amp will be useful also.
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Hi Rich,
I looked through my oddball TV dual controls and didn't find anything that would work
Hopefully Mark will get back to you soon and give some options.
Take care.
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