ALLWAVE 23 EXPANDER UNIT ADAPTER-PLUG

[Jeff Barna]

Help! I need the 'adapter-plug' that connects the Expander unit to the Amplifier unit (mine was broken years ago when the radio was moved to our house). It is a 7-prong plug that goes between the tuner unit and the amplifier unit at the amplifier, therefore a male and female all-in-one. It is similar to the plug used for the speaker but slightly wider in diameter, so that the two are not interchangeable. To see exactly what I mean, please look at the 'Expander Document' found on this site (under Scott Info Archive, Set Folders, Allwave 23, Expander Document). This 'adapter-plug' is described on page one under the paragraph entitled 'FOURTH' and shown on page five (Fig.1) and page six (Fig.2) with the note and arrow 'TO AMPLIFIER.' An adapter-plug with the cable still attached would be ideal. Is this a common item that people have banging around their junk boxes, or a pie-in-the-sky thing that’s impossible to find? Appreciate any leads or ideas. Thanks in advance for everyone's help!

[Lance Hughes]

Good morning Jeff,

        Is the pin configuration of the jack similar to any type of tube/pin configuration? Maybe a break out socket used to take measurements might work?

[Jeff Barna]

Almost identical to the 7-pin tube...but just a hair bigger so that it won't work! Good thought though. I've disconnected the Volume Expander for now while I try to get the radio running. Not sure how much it adds to the sound quality anyway, not nowadays. Thanks, Lance.

[Thomas Day]

One away out of this would be to replace both the 7 pin plug in the adaptor and the matching socket in the power supply chassis. Since the set socket in the adaptor is still ok, the plug on the chassis cable would still match. These were different sizes apparently to prevent the set plug and speaker plug from being accidentally interchanged. A couple of years ago, I printed the schematic for the expander and got the parts to build one for my Allwave 23. Parts are still on the shelf, and one of the last stations in our area that had music, changed its format a year ago. 

Thom

[Norman S Braithwaite]

The type 59, 1625, and other tubes used the larger 7 pin format. Look for those tubes and their sockets to make the adapter plug.

Norman