UK Voltage CJ Walker CJ55 in the USA?

Fingersfrank · 1st December 2005, 03:45 AM

Hi,
I have a CJ55 which I purchased in the UK, and is therefore 240V 50Hz, but I want to use it in the USA which is 110V 60Hz. What do I need to do? I believe the issue is the 10Hz difference which, if used unmodified, will apparently affect the speed? Would removing the resistor (?) make a difference? As you might notice, I'm no electrical engineer, but I really don't want to a) replace this, or b) use a step up transformer (or is this OK, sound/interferencewise?)

Help! I have watched my turntable gather dust for 9 years now, and have 3½K LPs languishing in purgatory :-(

Desperate.

Fingersfrank · 1st December 2005, 09:02 AM

I finally took the bottom off the base and have found that the motor body has a label with "110VAC 60Hz" printed on the bottom - does this mean I can simply put a US plug on it and plug it in without fear of damage?

sreten · 1st December 2005, 09:57 AM

Its very unlikely to be damaged by the lower mains voltage.

Though the current controlling resistors will be too high for
110VAC and the torque of the motor will likely be poor. The
value of the phase shifting capacitor may not be ideal at the
new operating point adding some vibration to the motor.

However it will still run at the wrong speed, far too fast,
machining down the drive pulley is an option.

Sreten.

TIMR07 · 3rd April 2006, 10:01 PM

I've got an old Walker turntable that seems to need a new motor. It sat for a few years with the belt on and has some kind of wobble now. Anyone know where I can find a replacement?
TIMR07

EC8010 · 5th April 2006, 04:55 PM

Martin Bastin (of Garrard fame) makes a turntable power supply known as the "Wave Mechanic" that will produce 240V at 50Hz for your turntable.

1st December 2005, 03:45 AM	#1
Fingersfrank diyAudio Member Join Date: Nov 2005 Location: Southern California	UK Voltage CJ Walker CJ55 in the USA? Hi, I have a CJ55 which I purchased in the UK, and is therefore 240V 50Hz, but I want to use it in the USA which is 110V 60Hz. What do I need to do? I believe the issue is the 10Hz difference which, if used unmodified, will apparently affect the speed? Would removing the resistor (?) make a difference? As you might notice, I'm no electrical engineer, but I really don't want to a) replace this, or b) use a step up transformer (or is this OK, sound/interferencewise?) Help! I have watched my turntable gather dust for 9 years now, and have 3½K LPs languishing in purgatory :-( Desperate.

3rd April 2006, 10:01 PM	#4
TIMR07 diyAudio Member Join Date: Apr 2006 Location: Los Angeles	Walker CJ55 I've got an old Walker turntable that seems to need a new motor. It sat for a few years with the belt on and has some kind of wobble now. Anyone know where I can find a replacement? TIMR07

5th April 2006, 04:55 PM	#5
EC8010 diyAudio Moderator Emeritus Join Date: Jan 2003 Location: Near London. UK	Martin Bastin (of Garrard fame) makes a turntable power supply known as the "Wave Mechanic" that will produce 240V at 50Hz for your turntable. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

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1st December 2005, 09:02 AM	#2
Fingersfrank diyAudio Member Join Date: Nov 2005 Location: Southern California	I finally took the bottom off the base and have found that the motor body has a label with "110VAC 60Hz" printed on the bottom - does this mean I can simply put a US plug on it and plug it in without fear of damage?

1st December 2005, 09:57 AM	#3
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Its very unlikely to be damaged by the lower mains voltage. Though the current controlling resistors will be too high for 110VAC and the torque of the motor will likely be poor. The value of the phase shifting capacitor may not be ideal at the new operating point adding some vibration to the motor. However it will still run at the wrong speed, far too fast, machining down the drive pulley is an option. Sreten.

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