Yup, a 4-pin mechanical that allows for the required plate voltage. I always replace with a solid-state version after checking the tubes, refreshing the filter caps and replacing the buffer caps.
Nick Sent from my iPhone On Jun 28, 2011, at 2:59 PM, Chuck Kuecker <[email protected]> wrote: > The old tube radios used a mechanical vibrator that hummed - and if the > caps dried out, the speaker hummed, too. Usually around 50 - 70 Hz. > > Chuck Kuecker > > On 6/28/2011 12:33 PM, No Quarter wrote: >> Ahem, I need to step up here. Courtney made the joke, I stated the filter >> capacitors. I need my ego stoked. LOL! >> >> In all seriousness though, why would there be humming on a DC system? Would >> this be alternator whine? What makes it hum when you aren't converting AC >> to DC then? >> >> NQ >> >> ----- Original Message ----- >> From: "Nicholas Stokes"<[email protected]> >> To: "Air-Cooled Volkswagen Discussion List"<[email protected]> >> Sent: Tuesday, June 28, 2011 6:06 AM >> Subject: Re: [vintagvw] Big M >> >> >>> You beat me to it Courtney! >>> >>> Sounds like filter capacitors. >>> >>> Nick >>> Sent from my iPhone >>> >>> On Jun 27, 2011, at 10:40 PM, Courtney Hook<[email protected]> wrote: >>> >>>> It doesn't know the words??? ;-) >>>> Courtney >>>> >>>> >>>> ----- Original Message ----- >>>> From:<[email protected]> >>>> To:<[email protected]> >>>> Sent: Monday, June 27, 2011 7:34 PM >>>> Subject: [vintagvw] Big M >>>> >>>> >>>>> Hi Nick, >>>>> >>>>> I have a Big M in a 57 Bug, that only hums very loudly You have a >>>>> prognosis? >>>>> >>>>> Ray >>>> _______________________________________________ >>>> vintagvw site list >>>> [email protected] >>>> http://lists.sjsu.edu/mailman/listinfo/vintagvw >>> _______________________________________________ >>> vintagvw site list >>> [email protected] >>> http://lists.sjsu.edu/mailman/listinfo/vintagvw >> _______________________________________________ >> vintagvw site list >> [email protected] >> http://lists.sjsu.edu/mailman/listinfo/vintagvw >> > > _______________________________________________ > vintagvw site list > [email protected] > http://lists.sjsu.edu/mailman/listinfo/vintagvw _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
