Kevin,
You have a good wife. Mine would get violent if it was just one sister
You have a good wife. Mine would get violent if it was just one sister
+7
tubenutr
Maintarget
Bob Latino
mazeeff
Kentley
anbitet66
DynakitParts
11 posters
Dynakit ST-70 Covers
j4570- Posts : 150
Join date : 2010-08-30
peterh- Posts : 1869
Join date : 2012-12-25
Location : gothenburg, sweden
DynakitParts wrote:In review of everyone's reply (Thank you)...
It appears that Peter's problem may in fact be due to the 50hz operation of the power transformer....Although, I have never had one complaint from our International customers, I think the choice of the word violently was a bit over the top. Violently would be my wife's reaction to finding me in bed with her (2) younger sisters...
Merry Christmas to all...
Kevin
Seems like a good explanation of the mechenical hum that disturbs me.
In fact, in 1970 i built and used a pair of MkIII, but had to sell them ( and replace with
a ARD-76 that was dead silent )
The MkIII vibrated not only with their covers, but even more due to the magnetic
properties of the chassies they were made of.
Maybe we should convert to DC ( 380V DC should be quite good to run stereos on :-)
Happy X-mas and keep up the Good Work !
Pillo69- Posts : 176
Join date : 2012-04-11
Location : Granada (España)
Peterh, I rewind my original transformer (PA-060) to a friend in Barcelona (Spain).
- Primary 240V / 50Hz..
- Secondary 5,3Amp filaments.
- Secondary 3Amp rectifier valve.
- Electrostatic screen between primary and secondary.
Performance is very good, and quite cold.
- Primary 240V / 50Hz..
- Secondary 5,3Amp filaments.
- Secondary 3Amp rectifier valve.
- Electrostatic screen between primary and secondary.
Performance is very good, and quite cold.