Question about Technics SL-1210 Turntable

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My turn table works properly but its volume is too low thu the amp is perfect. the needls are new too

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  • Anonymous Mar 21, 2014

    When I turn the volume up past a certain level on my turn table it makes a horrible jumping noise and the needle jumps around

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  • Technics Master
  • 5,126 Answers

Look it can either be one of 3 things. (1) Cartridge knackered. 2 Internal pre-amp in turntable. 3 Cartridge Pre-amp in Main amp connected to it.
To solve (1) disconnect all wires to cartridge. With the turntable connected to main amp - touch each channel wire (that connects to cart) with your finger. If you hear a decent buzz the cart has gone. A weak buzz and the other two could be still to blame.
Remember all functions on your main amp can work fine, but that pre-amp for the cartridge (often a single IC) can be dead or weak.

Posted on Jun 06, 2010

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Posted on Jan 02, 2017

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My Alpine MRP-M650 Amp is acting up. When I start the car, if the volume is at low, the subs don't work. But when I turn up the volume, they eventually kick in, then I can lower the volume. But when...


There are a lot of things that could cause this issue ...
1. Your amp requires more power than it gets when you start your car, and needs to charge up before it can work. If this is the case, you should be able to give your stereo about 5 minutes to warm up at low volume and it should come on. This happens a lot with amps with built-in capacitors (capacitors give you stunning, instant kick when working, but require a bunch of power to initialize). If you wire a bypass switch for the power to your amp and bass components, you can turn it on separate from the rest of the car and allow it to charge before you start your car (just be careful to turn it off when you are going to be away from your car for a while since this will allow your system to drain your battery).
2. Your amp might be set incorrectly for handling the system you are running. If your Ohms do not match up exactly (8 ohm speakers with a 4 ohm amp -- it's the "Impedance rating") then the system should not work at all, or should burn out the amp ... but with a jury-rigged system it can work. If this is the case, I recommend getting a new amp that matches your speakers.
3. Depending on the amp, there might be a volume-based cutoff that is working improperly. Turn on the car with the stereo at low volume. While the speakers are still not working, check to make sure that the amp has power, and seems to be functioning correctly. If everything seems like it's on the up and up, but the speakers are not working, try changing the volume-filter options on your amp.
4. I put this last because it seems like you know what you are doing with the system setup, but it is possible that you have a bad connection between the speakers and the amp, or between the stereo and the amp. There could be a loose connection somewhere (either inside the amp, between the amp and the speakers at the jack, or between the stereo and the amp at the jack). If this were the case, everything would look perfect from a visual inspection, but there could be a tiny space, or corrosion in a connection. Turning the stereo up to a high volume could then bridge this short circuit, and the electric force could magnetize the connection shut, allowing you to then turn the stereo down with the working connection. The best-case scenario here would be an external wiring issue, where you can clean any corrosion off the connections with an eraser, and reconnect everything tightly fixing the problem. The worst case would be a short WITHIN the amp, which would have to be repaired by someone with a lot of time and a circuit tester -- in which case you might be better off trading the amp in for a new one.

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1 Answer

Low volume


Most of the newer receivers do not have PHONO inputs. You would have to use external pre-amp with the turntable.

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I have a new Yamaha RX-V365 receiver and an older technics turntable, regardless of input setup I cannot get any volume from the turntable, yet all other inputs like CD, Tuner are fine....amp issues in...


Some turn tables do not have a built in amp, especially the older ones, the sound goes from the needle to the output. If the amp your are using does not have a designated phono, turn table, input it may not have the turn table pre-amp built in. Some turn tables have to be grounded to the amp to work properly.

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MY OLD MARANTZ DIRECT DRIVE TURNTABLE WORKS FINE BUT WHEN I TURN UP THE VOLUME ( DOESN'T HAVE TO BE VERY LOUD )THE WOOFERS ON MY JBL'S START TO MOVE IN AND OUT DRAMATICALLY AND THE TONE ARM ON THE...


Hi phopkins3

You gotta love JBL bottom end:) Is this a new problem or something you have been putting up with. Check settings on the amp first. If you have excessive bass boost you may get this sort of problem. Acoustic isolation is what fixes it. IF bass frequencies are able to couple up to the turn table enough to bounce the needle, then you need to get the T/T better isolated from the speakers. Check that the body of the turntable is isolated from everything, and that it is sitting squarely on its feet. You could also use a rumble filter if your amp has one fitted. The setup on the turntable is also worth a look. Set tracking force to 2-3 grams. Check these things and report back to me here and we shall get to the bottom of your problem for you. :)

robotek

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1 Answer

LOW VOLUME ON MY SL-B35 TURNTABLE


Hi Tim,

You probaably do not have a phono input on the digital surround amp you are using. Your sound is bad for 2 reasons
  1. Your Turn Table has low output level,about 100 times less than a CD player.
  2. You need RIAA equalisation to reduce the treble and boost the bass. This is for replaaying any modern vinyl or LP's
You can get an outboard preamp that matches the output of your T/T to suit the normal aux input on todays digital surround amp.
You can get one online from here. Or if you are keen build one from a circuit here

I am more than happy to answer any other questions you may have about it, please get back to me here, or use the ASK function to go straight to me :) If you are still unsure, have problems, or we need to look at the situation more deeply, then before you give a rating for this advice, hit the ASK button Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards robotek

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1 Answer

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chenge the seting thu the microfon for minim

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