…So since the “export” power transformer has just recently dried up in Japan, I wanted to figure the most economical and electrically sound and safe way to convert 120V AC Technics SL1200 turntables to 240V AC with the least fuss whilst still leaving them double insulated as per the original specification and Government regulations.
I set one up and monitored its current draw under various conditions and the results were interesting. The original transformer provided 32VAC on its secondary at idle BUT as the current demand increased to the maximum the secondary voltage dropped to 27VAC..
Here’s the results for interest’s sake…
Primary Volts = 242VAC – Secondary 32VAC
AC current demand Idling – 350mA
Idling with lamp on – 430mA
Rotating at a constant speed with lamp on – 450mA
Stalling platter with lamp on – 955mA
Spinning backwards with lamp on – 1030mA
At full peak current demand AC drops to 27VAC
Not really an issue as the DC voltage required is 20V DC BUT I considered the peak current demands the motor circuit required during spin backs and stalling and observed a slight loss of recovery torque due to the poor regulation of the standard power supply compared to my test bench power supply.
I have found a modern toroidal power transformer that not only has a minimal electric field so as not to interfere with the close proximity of the motor circuit’s feedback windings but gave a slightly quicker recovery time as a power supply.
Ultimately I can convert export SL1200 to 240VAC and make them have better recovery from stalled at a very reasonable price and they look good.
Please use the contact form to enquire about converting or modifying your SL1200.
UPDATE: 17 JULY 2013: THESE ARE NOW SOLD. SORRY
In stock now is this lovely pair of SL1210MK2. Fully serviced and lubed and set up and come with a 1.5M OFC Gold RCA and no earth wire. They have a couple of knocks and scratches but overall are pretty tidy and play very well.
They would be good club decks with their blackness to blend in with the CDJs and DJMs 😉
SL1200Dex will give a full EAV 3 month warranty on genuine component failure. Slipmats and Cartridges may not be included in deal. As always, please use the contact form to give expressions of interest on this classic pair.
This poor little blighter has been separated from its mate and is scared.
This is available now and is not in the best condition cosmetically but the electronics and mechanical parts are all serviced and replaced where necessary. It has a 1.5M OFC Gold RCA and is fully lubed and factory setup, has a reasonable lid and runs and plays perfectly.
Be a good SL for a club as a spare/third deck or for a studio for catching samples where looks don’t matter.
SL1200Dex will give a full EAV 3 month warranty on genuine component failure. Slipmats and Cartridges may not be included in deal. As always, please use the contact form to give expressions of interest on this poor lonely beast.
UPDATE: 30 JULY 2013 THESE DEX ARE SOLD. SORRY.
Coming up in a couple of weeks is this amazing pair of SL1200 Custom dex.
They have been stripped and done out in stunning white with blue LEDs. They have silky looking SL1200MK6 tonearms (yep MK6) and the tonearm bases have been painstakingly polished. The platters have been made white and polished. They will be sold with 1.5M OFC RCA, removed ground wires and be fully cleaned and serviced and lubed and factory setup before leaving the workshop.
These are an amazing pair of turntables and would be right at home in a producers studio or your lounge.
SL1200Dex will give a full EAV 3 month warranty on genuine component failure. Slipmats and Cartridges may not be included in deal. As always, please use the contact form to give expressions of interest on this unique pair.
This is an unusual Technics 🙂
Technics SL-1200 MK4 (33rpm 45rpm 78rpm – Japan only Model)
Gold RCA plug connectors for audio and ground rather than the usual cables on all other SL1200/1210 models. Only model with silver colored isolation feet. Technics logo and pitch labels are in yellow/gold colour. Sold only in Japan/Asia market as audiophile turntable. Only Technics SL-1200 model to feature 78RPM playback speed. Units are pretty rare and not easy to find these days.
Thanks to TechnicsAus
In a couple of weeks this very tidy pair of Technics SL1200MK3Ds will be prepped for sale. Please email expressions of interest to reserve your new dex now!
They will have new 1.5M OFC RCAs and the earth wires removed, full factory setup, clean and service and lube and are complete with very tidy lids.
SL1200Dex will give a full EAV 3 month warranty on genuine component failure. Slipmats and Cartridges may not be included in deal. As always, please use the contact form to give expressions of interest on this lovely pair.