[Jukebox-list] some Wurly 2200 tech questions

[Wesley Dean]

    Rick, its easy to check if the trouble is in the remote volume wiring. 
Just re-install the jumper plug and see what happens.  The reason that the 
147 is different is the cancel circuit requires three wires that are in the 
motor circuit. A relay is used to prevent the motor circuit from having to 
go all the way to the cancel switch that may be some distance away and would 
have too much voltage drop for the motor to operate efficiently. I believe 
its a little late to question the Wurlitzer engineer's motives. Wes
----- Original Message ----- 
From: "Rick Force" <flashbk13 at hotmail.com>
To: "juke list" <jukebox-list at lists.netlojix.com>
Sent: Saturday, July 01, 2006 5:50 AM
Subject: [Jukebox-list] some Wurly 2200 tech questions


Hi all,
I have some tech questions for my 1958 Wurlitzer 2200. First off, there is a 
constant hum when the mute relay drops out. Doesn't change much according to 
volume, unless turned way up (then it squeals/ goes into feedback). It's not 
mechanical vibration as I selected an empty slot and the hum was there with 
the tone arm just suspended in air. Amp has been rebuilt (maybe something 
missed?) and has been modified to use a Wurlitzer 2700 series ceramic stereo 
cartridge (wired in mono). I just had a thought as I write this, could a 
tone arm wire be touching the arm (I believe its metal and not plastic...the 
arm is from a 3000). I'll have to check that.
   The next question is concerning the Wurlitzer #147 remote for this juke. 
The juke sounds great (except that hum), but as soon as that original remote 
is plugged into the remote socket of the 132 amp, the sound is too loud 
(can't even turn it all the way down, can still hear the music) and the 
sound quality is bad (not just distorted, but lack of highs...only bass and 
some mid range). I understand this is a miss match somehow (as the remote is 
set for the cobra circuit). How do I get that remote to work with the new 
mods? Warren Rowe who did the mods, said all mods were at the front end of 
the amp (the cobra circuit) and the back end (original volume control) was 
not touched. I need this remote as I need to put the juke in the corner and 
can't get to the back easily. My guess is that nothing needs to be done to 
the amp, but to the components in that remote. Why couldn't Wurlitzer just 
have the volume pot and cancel button in that 147 remote without any extra 
circuitry like Seeburg and AMI/Rowe? The 147 seem too complicated for what 
it does (several resistors and caps connected to the pot terminals). You 
would think that all that could be removed and just connect directly to the 
pot (they use a double ganged pot...looks like a stereo pot, why would they 
do this in a mono juke?). Thank you, Rick.
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