Question about Technics SL-1210 Turntable

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1210 problem The problem occurs on both decks. At mid to high volume when the needle is on the record if i touch or tap anywhere on the deck u hear the tap thru the speakers . At high volume im getting a rumbling noise which comes and goes. It is not my cartridges, Have just replaced rca cables and ground wire and am pretty sure done it properly. have been told may be tone arm but wot can go wrong with tonearm to cause this?

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Anonymous

Also at high volume you may be getting feed back caused by vibrations from the speakers through the decks

Posted on Aug 25, 2008

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Those are just standard phonograph player characteristics in my experience. You'll hear a tap on the deck because there's essentially a live mic ( the needle ) physically coupled with the record on the turntable and the rest of the phonograph player even though they try to dampen the coupling of the turntable as much as possible. The rumbling noise at high gain is because the turntables being driven by a motor via gears or a belt and creates some  vibration, wich is transmitted through the turntable and picked up by the transducer ( needle ), low frequency rumble, just like a recording studio on a busy street may pick up from road vibration/ noise.

Posted on Aug 07, 2008

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1 Answer

Sony stacking system LBTd505, the sound from the record deck suddenly went very faint. The cd and radio sections are fine. I have tried a new stylus, but no difference. Any ideas?


You have two options. First a faulty cartridge. Or a faulty pre-amp in the main amp.
You can find out if the cartridge (and amp) are playing up. By removing the connectors on the cartridge.
Then with the volume turned up to about half, with your finger, touch each one of the wires one at a time. It will not harm you at all. But you should hear a loud buzz on one wire on the right and a loud buzz on the left on another wire.
The two other wires will either produce a crackle, or a tiny buzz, or nothing at all.
If you do hear a loud buzz on two wires. The cartridge is faulty and needs replacing.
If you hear a slight buzz on them or weak sound. There is either a bad connection between the deck and amp. Or the pre-amp inside the deck which is only used by the record deck so will not effect any other function, is faulty.
You can remove the record deck connections to the amp and again with the amp on half full, touch the inputs with your finger. If you are not hearing a loud hum or buzz, the pre-amp is faulty. If you do the connectors are faulty.

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Technics SL 1210 feedback/grounding problem.


Do you have these turntables on an anti-static mat, or some other non-conductive surface?

Jun 09, 2008 | Technics SL-1210 Turntable

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How do you dub cassette to cassette


Hi
If you have a dual cassette deck, then one deck will only play cassettes,whilst the other will have a record facility as well.
Basically you need to place the original cassette in the play only deck and the target cassette in the record/play deck.
Start the playback in the play only deck and immediately press the record and play buttons together on the record deck. Some decks have high speed dubbing but this varies so much that you will need to consult your manual for this.
Cheers

Apr 09, 2015 | Audio Players & Recorders

1 Answer

A deck plays and records at a high rate of speed, sounds like the chipmunks. B deck plays and records fine, but would'nt mind having the whole thing gone thru.


Not seeing a make or model in your post we have to guess.

Is this a cassette deck? When's the last time you cleaned it, specifically the capstans? Google it.

May 08, 2011 | Audio Players & Recorders

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Im having kenwood home stereo system model no xd-v818 ...in high volume about 80 the sound starts to distoriate and the voice is not clear..i want to kno wether the stereo deck is not able to provide...


Well, here is the situation as I understand it. Here is also some theory to help you out.
Your Receiver or Amplifier has a "scale" showing relative volume. Distortion always increases in speakers and amplifiers when you turn them up. If the sound is getting extremely distorted, the Receiver is attempting to operate above it's maximum output. The scale is an average, but because music recordings are often mastered at different levels, "80" may be too much. When an amplifier section of a receiver is over driven, the distortion (which you observed) will damage or burn out your speakers. Most likely the tweeter (high frequency speaker)
If you back off the volume, or turn down the output of the deck until the sound becomes clear, then that level, IS FULL VOLUME. Based on what you are saying to me, I don't think anything needs service.
There is one other very important thing I should mention to you
. When people use high powered equipment and initially turn up the sound. After a short time, the mind turns it down. What next happens is the reason professional musicians and sound engineers often have permanent hearing loss after a relatively short time.
What happens is that the listener and often the engineer running the sound board at a concert thinks the sound is not loud enough (when the audience is happy with the level) and turns it up. After turning it up, his mind (and the audiences') turns it down and then he thinks it not loud and then again turns it up. And up. And up. The only reason I'm not deaf is that I discovered this when I was building sound systems as a kid. I also studied about it. So please be careful when you play things loud. Permanent hearing loss starts to occur at the very high frequencies and rolls down from there over a period of time. Hearing loss can start to occur in just a few hours.
at 110 decibels. It doesn't come back. If you understand this, you'll keep your hearing.
I hope this helps,
Best Regards,
Mark

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1 Answer

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Try turning the volume up on your laptop up to high, while the volume on your deck is lower... This will put a stronger signal into the deck first... you may get more bass, Another trick is to EQ the highs and mids lower and crank up the bass... see if you get an acceptable amount of bass with these tricks..

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Turntables require amplification, they have very low output on their own. If your Sherwood has an Aux input try using that, older receivers often had a built-in pre-amp on the aux jack. You can obtain a stand alone pre-amp for less than $50, I use one from mcm, #40-630.

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Since you've already replaced your RCA cables, and tried different cartridges, the only other thing that would cause this type of issue is your tonearm. It's probably on it's way out, and will need to be replaced shortly.

You can obtain a replacement tonearm HERE, however, it's rather difficult to replace the tonearm without experience or knowledge on soldering.

Good luck!

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Teac cassette deck records at very low volume


Tape decks have a record amp, depending on the age of the machine it will probably be an IC. Yours might have failed. See if you can identify it or try and get a C diagram. To locate it follow the leads from the head. If your lucky it might have 'Rec Amp' on the board. Their maybe a preset marked 'rec level' for each channel. The (IC) box with legs - near them will most likely be it. Don't adjust the presets unless somebody has tampered with them before. (they will look to be sitting around the middle if they are OK).

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