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MotorBikeLes · 13th Jan 2020, 6:48 pm

I think that amp unit contains a non-synchronous vibrator.
I had one, but it may have been a bigger one. Back in 1967 I owned a Healy Abbot DHC, fitted with the radiomobile dashboard unit, and the amp under the bonnet. Two speakers, one in each door. i am fairly sure mine had a dual output (EL41s maybe?). I seem to recall it was longer than your Type A.
I remember trying to get the vibrator to run reliably (gentle filing), but not very sucsessful, so I bought a new replacement. It had a load of black caps, can't recall the make, and the distorted output became acceptable once they were replaced. A long time ago.
Les.

13th Jan 2020, 6:48 pm	#6
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,350	Re: Radiomobile type A & 4100 I think that amp unit contains a non-synchronous vibrator. I had one, but it may have been a bigger one. Back in 1967 I owned a Healy Abbot DHC, fitted with the radiomobile dashboard unit, and the amp under the bonnet. Two speakers, one in each door. i am fairly sure mine had a dual output (EL41s maybe?). I seem to recall it was longer than your Type A. I remember trying to get the vibrator to run reliably (gentle filing), but not very sucsessful, so I bought a new replacement. It had a load of black caps, can't recall the make, and the distorted output became acceptable once they were replaced. A long time ago. Les.