A shot in the dark.

[Racing]

Hello all.
Asking for help boys. I recently bought me an old german Schaller amplifier. A 1966 vintage Schaller KV-50.



Amp was dead as i got it,but that was handled soon enough. Only thing presenting me problems is the reverb.
The reverb (hall) in these old units is a rather peculiar ones working off a magnetized drum.



As such it uses tapeheads. In this case heads made by Bogen in Germany,and then the model UK-100.
Problem i´ve got is that all 5 heads on my unit are broken...and i can´t find replacements.



So. What i´m asking is if any of you guys know of any Bogen heads for sale?

[Friedel]

30 Viewers without any help.

For me, i also can´t help, but here is the Bogen Internet Adress with english speaking home page:

Bogen

I hope you understand me, its only my school english

[roland]

hello,

i've only found a german web-page with 20 guys which uses and restore schaller-amps...perhaps they can give you a little help.

schaller guys

[Racing]

Thanx a million,both of you!!!

True enough. It turns out that one of the german gentlemen on the Schaller site had gone through the entire process of doing a reverse engineer on his unmolested amp.
Ergo..
I now got a CORRECT schematic for my amp in hand

Remains to see if it´ll correct the issue with the reverb.

[Racing]

Update.

Still haven´t got the reverb to work. Seems the tapeheads used are quite specific. I do get "some" sort of sound recorded if i drag a piece of tape across the recording head,but that´s it.

In turn i´ve written Bogen but thus far they have not replied.

As is i´m giving thought to remodel the reverb into a tape echo instead. That way i´ll retain all the functions of it...and at least get it to work.