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Schaller KV 40 oder 50 Röhrenscheibenecho

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groovingvolki:
Vielen herzlichen Dank für euer Interesse und den Hinweis für die Schaltpläne.
Werde den Amp erstmal reinigen und mich dann von hinten( poweramp) bis zum Echo vorarbeiten.
Aber erstmal neue Röhren und ordentlich durchmessen.
Hoffe die ECF 83 aufzutreiben.
Wenn  alles gut funktioniert dann über die Lp und Gehäuse nachdenken.
habe hier noch 12" Celestion und Jensen rumliegen.
Aber erstmal langsam.
Sind ausgebucht bis Ende Mai.
howdy Volker

LuciMan:

--- Zitat von: groovingvolki am  4.01.2015 11:13 ---....Hoffe die ECF 83 aufzutreiben. .....
--- Ende Zitat ---
Deine Hoffnung dürfte zu erfüllen sein: 2x ECF83 neu (eBucht-Artikelnummer 361153116300) - da würde ich direkt zuschlagen.

SvR:
Salü,

--- Zitat von: LuciMan am  4.01.2015 12:07 ---Deine Hoffnung dürfte zu erfüllen sein: 2x ECF83 neu (eBucht-Artikelnummer 361153116300) - da würde ich direkt zuschlagen.

--- Ende Zitat ---
Alternativ würde ich mal beit BTB-Elektronik oder die Wüstens schauen.
mfg Sven

Racing:
Grooving.

Drop me an e-mail at;

jesper@by-racing.se

...and i´ll be happy to send you a copy of the all tube KV-50.

Racing:
http://iloapp.elegic.com/data/_gallery/public/28/140455733153300800_resized.jpg?width=1344&height=950

Managed to resize and format the file (my server won´t provide for PDF files for some reason),but that there is the stock schematic for the all tube KV-50.

That said they DO differ. There´s versions of it that lacks the voltage selector part for instance. There´s versions that use straight up 220VAC motors for the reverb unit..and so forth.
In other words don´t be surprised if your particular unit doesn´t conform to schematic down to the last part.

My own amp,as stated,is up and running and pulling its job off as an absolute champ. True enough i´ve modified mine rather extensively from an electronics point of view,but it´s all modifications that can be taken out...and thus the amp be put back to stock.

The ECF tube is mentioned. It is my findings,as a general whole,that using pentodes that sees overdriven sounds farther in a given circuit is a no-no. They simply do not take kindly to overdriven signal. In short...it´s sounds real bad as they do.
Ergo i played around with a different phaseinverter setup in my own,and the final choice was for an ECC-99 from JJ. Does the job well.



In turn. Like stated above i´m still having an argument with the reverb of it. Them toneheads in the picture are old Bogen UK-100 ones,and they seem impossible to nor find or replace.
As ALL of them were shot on my unit i to this day don´t even know the inductance of them. Nor the DC resistance even. They seem to have a reputation for going open circuit and as such i´m a bit surprised that noone seems to know the specs for them. Have written Bogen i Germany to no avail. No reply even...

So.
What i´m planning to do as of current is convert the unit to be a tapeecho instead.



I´ll stick to the drum still being the drive unit of it,just reroute the entire thing a bit and replace the heads with common taperecorder ones and thus at least get the unit up and running again.
Going to use a common capstan roller...springloaded of course,and take it from there. The "pillars" of the unit i´ll turn to size in my lathe (drehbank?) out of common POM plastic material.

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