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Wed Apr 30 15:22:21 CDT 2008


0.220 mfd capacitors in parallel with  0.027 mfd or 0.033 mfd
capacitors in order to make up the values of 0.247 mfd or 0.253 mfd
which are more or less  close to the mfd values required by the inductor
coils of the TG notes 49 to 54.

For the TG notes 55 to 91 you can use 0.1 uf capacitors. The 0.1 uf
capacitor value is approximately close to the mfd value required by the
inductor coil filters of the TG notes  55 to 91.

If you decide to recap the TG you could also use this opportunity to
replace the wax paper capacitors from the vibrato line box  with new
capacitors of the same mfd value as that printed on the case of the wax
paper capacitors.

You can use  the readily and cheaply available  MKT  polyester
capacitors or the green cap polyester capacitors or the more expensive
polypropylene capacitors for the TG. You do not need to use the
expensive audiophile grade capacitors . The TG is not an audiophile
device  so therefore it is OK to use the cheaper polyester capacitors
because they are sealed in the plastic case so therefore they will not
drift up off spec like the wax paper capacitors did.

If you go to www.hammond-leslie.com  you can download a copy of my TG
and tapering data Excel spreadsheet ( titled  "Kon's TG and tapering
data" ) .

This  TG data spreadsheet contains the measured TG output levels of over
seventy Hammond organs  ranging from the 1930's , 40's , 50's , 60's and
70's  era and this includes wax capped pre 1964 organs , recapped  pre
1964 organs and red mylar capped  post 1964 organs.
You can see the big differences on the output levels of the TG notes 49
to 91 of the wax capped organs  and the recapped organs. The TG notes 49
to 91 of the recapped pre 1964 wax paper  capped  organs are more or
less similar to that of the red mylar capped  post  1964 organs because
the red mylar capacitors did not drift up off spec like the wax paper
capacitors did so therefore the post 1964 red mylar capped organs still
more or less have the original brighter sound.
All the best.
Kon

  

Karlo Lovric wrote:
Well, I have a '47 CV and 760 with MIG-L tube overdrive. Probably the
most 
of the sound
is in the organ. But I think I should get myself a tube leslie.
Few days ago, I rebuilt CV's preamp. Have changed few bad caps, and it 
sounds with more
life now. But still too "warm" (had to use that word) for my taste.
Maybe I should compare my TG outputs with other organs..
Karlo.




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