Question about Technics SL-1210 Turntable

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Poor low frequency

Hi there, one of my dek does not give me full low frequency, i have replaced the lead+connectors, aswell as tonearm,and still nothing as changed, when i unplugged on of the leads connector from the mixer, then the low frequency are coming back but plays in either speaker accordingly, but only mediums and high frequency will be played when plugged back on, is it the printed circuit board or else???????

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  • 515 Answers

Nope, the circuit boards have nothing to do with transmitting frequencies. There are only 4 items on the Technics 1200 that transmit frequencies...

1) Stylus/Needle
2) Cartridge
3) Tonearm
4) RCA Cables/Leads

If you've already replaced 3 and 4, the problem lies with either 1 or 2. Or the RCA cables you replaced were not done properly, or you used poor quality cables. Double check the work.

- OPTiC.
Digital Analog Therapy
www.djprolab.com
www.1200s.com

Posted on Nov 04, 2008

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The only thing I can say is to make sure you set up your cartridges correctly - click HERE FOR INSTRUCTIONS on BALANCING YOUR TONEARM properly.

If, you've balanced your tonearm, and set up your cartridges correctly, then you should not have any problems. Unless, your tonearms are damaged. But this is highly unlikely. I just think you need to balance properly.

Another note, Ortofon Concorde have a design flaw, in that they don't connect very well to the Technics tonearm. The Concorde's, have short and stubby connections on the rear, making for poor connections to the tonearm. Ortofon has addressed this issue by releasing the Ortofon OM series cartridges, and mount them to standard Technics Headshell.

If you still can't figure this out, feel free to give our techs a call 24/7 @ 1.866.668.1596 ext 1 - they can walk you through setting up, and properly testing your tonearm to see if it's damaged or not.

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Check to make sure you have a nice solid connection on your tonearm from your cartridge. The problem is either your tonearm or your RCA (red/white) cables.

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If you are certain the new leads/RCA cables and the soldering work was done properly, and you've determined that the issue is from the turntable and not your mixer.

Then there are 2 other factors that could be causing this issue:

1) Bad Tonearm - look inside the tonearm, where the cartridge/headshell mounts. You'll see 4 prongs. Make sure those prongs are protruding and they all look even. They must also be a nice shiny brass color. If they are dull and/or black, try cleaning them out with an contact cleaner (CAIG Lab DE-OXIT works good) made for electronic components. If any of the prongs appear to be pressed in, try to see if you can get it to bounce back. Those prongs are spring loaded, and sometimes the springs get misaligned. Of course, they also tend to dislodge. If that's the case, then you will need to replace the tonearm altogether.

2) Faulty Cartridge / Headshell - Make sure your cartridge & headshell work properly. The easiest way to do this, is to swap your cartridge with a working one. If you have 2 turntables, just swap them out, and see if that changes anything.

I am going to say, it's more than likely a tonearm issue. There really isn't anything else, other than the Tonearm and RCA's which would cause sound issues. The Circuit board will not affect your sound, unless you burned it, or damaged it in some other fashion when replacing the RCA cables.

As for a Service Center in the UK, not sure of any, but you can contact Panasonic, which is the parent company of Technics - www.panasonic.co.uk - go to the Support Section for a list of auth service centers in your area.

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1 Answer

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The issue will mostly likely be the tonearm, rca's and/or the rca leads.

Reverse the connections on the mixer to eliminate the input rca's on the mixer and isolate the channel at fault.

Reseat the headshell/cartridge assembly.

Replace the stylus.

If after these 3 steps, the issue persists, then it is actually is an internal issue, and the RCA's and/or tonearm may need to be replaced.

Check it..

http://www.djproaudio.com/cgi-bin/Help/kb.cgi?do=read&id=17&lang=en

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