Question about Stanton STR8-80 Turntable

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Records will not play clear and break up. Needle seems fine, when I touch the tone arm or needle assembly there is a loud humming sound through the speakers when i remove my hand it goes away.

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If all the wires check out OK and the record needle cartridge is fully connected then It must be the actual preamp of the unit, The str8-80 have a digital preamp that allows the record player to bu used with or without a standard riaa preamp. and DSP that allows pitch coerrection while changing the speed, this is a feature useful to DJ's, however; if you are like me, then I modded the turntable by bypassing all the circuitry and sending a signal straight from the needle to the RCA out. Obviously now the pitch correction is disabled and the line out feature is disabled. It is now like a regular record player for listeners who dont care to change pitch or need pitch correction. The motor functions and speed controls still work like normal. I simply modded the audio signal path. You will have to know how to solder and mod electronics to do so.

Posted on Sep 16, 2012

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Check the ground lead on the turntable is connected to the grounding post on the receiver.
Also check all wires from the rca jacks to the stylus for continuity and make sure they are all connected properly at the stylus head.

Posted on May 27, 2011

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It sounds like the wires that go from the cartridge mainly the grounds are broken. You need to use an ohm meter to check them.

Posted on May 27, 2011

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1 Answer

The tone-arm on my turntable automatically stops too early. Is there any way to fix this?


Yes. you need to set the travel on your arm. I don't know your specific model but they are all the same concept. On the back by the pivot point there should be a small screw that you can adjust the travel before it returns.

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Wurlitzer jukebox 1015 78rpm records needle does not start at the begining sometimes starts 1/2" in. How do I adjust tone arm


If you study the screws around the cradle that the tone arm sits in you will see that it is adjustable. This determines where the tone arm is when the record comes up. If the machine was always wrong like this it may have been set for 45rpm records. You need to adjust the whole tone arm post with the screw that goes up into the base of the post..

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The Levitator is a tone arm "auto lifter" for turn tables and record players that do not have an "auto-return" feature, or has one that is broken. If your needle rides in the "wax trail-off" area of a record it can damage the needle, along with making a horrible noise. It is not enjoyable to have to babysit your records and manually take your tone arm off the record the moment it is done. The Levitator does it for you so you can relax and go about your business. When the record is done the tone arm trips the lever triggering the lifter to raise your tone arm/needle off the record. It is designed with adjustable height to fit any turntable. These are available for sale through Ebay,or please see video to order your own. http://www.youtube.com/watch?v=PS6g9rQRF9M&feature=mfu_in_order&list=UL

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CHECK ANTI SKATING SETTING SHOULD BE SAME AS STYLUS FORCE ABOUT 3.ADJUST TONEARM HEIGHT SO IT IS PARALLEL TO RECORD WHEN PLAYING.HAS THE DECK HAD NEW PHONO CABLE FITTED RECENTLY IF SO THIS WILL BE THE CAUSE GET IT DONE PROPERLY.

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There's not enough pressure to keep the stylus down in the grooves. Increase the weight (on the end of the arm).

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Record player sounds scratchy and tinny


Playing records is a contact sport.

Since the needle touches the record -- as opposed to a laser reading a CD -- any bit of dust or mold translates to annoying pops and hisses.

Record cleaners get down into the record grooves to extract dust and particles.

Or you may need a new needle.

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1 Answer

Re:


Hi Vat,
Although I live in Canada now, I was born in the former
Czecholsovakia. While I spent a year in the Czech Republic in
2006, I was amazed how advanced their technology was, in
comparison to Canada or the US. If you want modern technology,
Prague is the place to go. Anyway ...

1) As I said before, do NOT adjust the tone-arm weight up
and down. This setting must be set to match the stylus and
the cartridge !!! The wrong setting is very bad.

To get the weight adjusted correctly, do the following.

a) Check the cartridge and stylus (needle) specifications, on
the WEB if necessary.

A typical tracking weight is between 0.9 grams to 1.5 grams,
but this very much depends on the needle geometry. To much
weight will damage the needle and the record, but

so will too little, because the needle will not stay on the
surface, skipping or mistracking on loud passages.

Note that the tracking acceleration is proportional to the
the square root of the loudness, multiplied by the frequency
squared. So if the tracking force is too low, the needle will
bounce over high frequencies and damage the record as
well as the needle's tip.

2) Once you know the correct force for your needle, adjust
the rear weight for ZERO force, such that the needle just
floats weightlessly in the air. If your turn-table has an anti-
skating adjustment, set that to zero as well.

3) At this point the tone-arm should be totally weightless,
and should neither touch the plater nor swing up/down
by itself. It should float halfway.

4) A this point, adjust the rear weight's dial (not the weight) to
read zero. Note that the dial will slide, while you hold the
weight still. You have now calibrated the tone-arm's zero
point.

5) Now, adjust the weight (with the dial) to read the desired
tracking force, for example 1.25 grams.

6) Now adjust the anti-skating dial to the same number as
the rear weight. This setting compensates for the radial
(towards the center) component of the friction vector,
caused by the needle riding on the record groove, at some
specific (average) tone-arm angle.

7) Your tone arm is now balanced, and you should not
touch it after this, accept for minor adjustments.

For brand new records, you may lighten the tone-arm
by 10%. For old records, you can make it a little heavier.
Similarly, you can adjust the anti-skating to prevent a
record from skipping, but a bad record should be played
only once (and stored on your computer).

8) For some tone-arms and cartridges, the cartridge pitch
(up/down angle) is also adjustable. This requires a special
jig or gauge, supplied by the cartridge manufacturer.

The pitch can be adjusted either by the use of screws or
wedges, and by lowering / raising the rear gimble. On my
Technics SL 1200, the gimble elevation is adjustable with
a large ring, and my SURE V15 cartridge came with a guage
for adjusting it correctly.

9) It may also be possible to adjust the cartridge's yaw and
radius, but all of these adjustments should only be done
using the correct gauges and by strictly following the
cartridge installation manual.

10) NONE of these adjustments should effect the tone-arm
cueing or return process. There should be plenty of
clearence if the cueing mechanism is working properly,
except, perhaps, for the gimble elevation, if the cartridge
is unusually tall.

11) Is the cuing mechanism (i.e. the tone-arm lifter)
mechanical or hydraulic ?

Is it the lift consistent or does the tone-arm drop down
with time?

Does the tone-arm move parallel to the plater, or does the
stylus height change with tone-arm position (yaw)

You are looking for a mechanical defect in the cuing
mechanism.

12) How much over all lift do you get between the down position
and the up position? This should be at least 8 to 15mm

If the cuing mechanism is worn out, it may not move enough.

If it starts too low, it may move enough but not raise the
needle enough to clear the record.

If the cartridge is tracking too low, you may have to
remove some wedges or spacers between the cartridge
and the head, or lift the rear gimble if it is adjustable, or
get a different tone-arm head, that matches the cartridge
profile.

Finally as silly as this sounds, make sure that the
platter is fully dropped and properly engaged. If the
plater is too high, for what ever reason, this would also
cause the needle to drag.

Also make sure that the rubber mat on the plater is the
right one and that it is not too thick.

Martin


installation manual.

Jul 02, 2008 | Audio Players & Recorders

1 Answer

Problem playing 45 Records to their entirety.


There is an adjustment on the tone arm that you use to set where the tone arm picks up at the end of the record. This adjustment is normaly at the back (pivot point) of the tone arm and will be on the side probably. By the way, the tone arm is the part that the stylus is mounted to that swings back and forth to reach all the surface of the record. Make your adjustment and then test and continue doing this until you get it just where you want it. It is a process of trial and error. Good luck.

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