Question about Technics SL-BD20D Turntable

Open Question

Tone arm bounces - Technics SL-BD20D Turntable

Posted by Anonymous on

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

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..

Mar 22, 2013 | Audio Players & Recorders

1 Answer

Tone arm keeps returning to rest on Crosley CR249


Hi, Try this. with it turned off. Lift tone arm across a record to the run out groove and set it down. Now power up and hopefully it will reset itself. In all honesty I would sell it and get a decent old school player. John. Styluscity.com

Nov 09, 2011 | Crosley 0187SST Turntable

2 Answers

Hi. I'm have a problem with my Technics SL-BD20 turn table I've just purchased. When putting the arm onto the LP it just skips over the surface to the middle. Why does it do that? Cheers.


Try adjusting the tone arm weight so that the arm will be slightly heavier.

If this does not help, see if the tone arm manual lift handle is operational and fully released when the arm sits on the record.

Another possible cause are the tone arm position sensors inside the unit.

Hope you can fix it.

regards

Triarcuate

Oct 01, 2009 | Audio Players & Recorders

1 Answer

Tone arm trouble i think???


this is a damaged tone arm bearing i had this problem with mine and had no choice other than spending £50 on a new tone arm

Mar 08, 2009 | Technics SL-1210 Turntable

1 Answer

Recording midi player


Yes. You can record the midi output to a track using bounce mode.

With you midi (or smf) file loaded into the midi tone generator,
press shift-bounce to enter bounce mode. Then arm a track for recording. Turn the fader up for that track, the master fader and the fader for the midi tone generator. Make sure than all other track faders are down or the tracks are muted (or empty) and press play and record. The midi song will be recorded to the track in real time. Just press 'stop' when done and exit bounce mode (by pressing the bounce button again).

bd.

Jan 12, 2009 | Tascam 2488 Portastudio Multitrack...

1 Answer

I balanced my tonearms correctly. i think .. but the stylus jumps off the record and when i back spin (cue) the needle skates drasticly. can you walk me through the balancing proceedure and tell me how to...


Balancing the tone arm is a two step process. Set the needle weight adjustment to zero(0) and make sure that the tone arm is balanced. It should rest horizontally without touching anything. Next, set the needle weight (usually 1.5 grams). Both adjustments should be on the rear of the tone arm. That should cause the tone arm to drop toward the record and have the correct pressure for the needle. Also, check the anti-skate adjustment. If that is off, the behavior you describe will occur as well.

Dan

Jul 21, 2008 | Technics Audio Players & Recorders

1 Answer

Fisher turntable M-720 need to set weight and return levels


Hi mariahom

Setting the tracking force is an easy task. Try this method.

  1. first thing to do with the tone arm sitting above its rest, rotate the weight on the end of the tone arm until the tone arm is balanced in the middle. neither up nor down, just right in the middle.
  2. calibrate the numbered rotating collar on the weight so that 0 is exactly on the reference line on the tone arm.
  3. then turn the weight and numbered collar together to the tracking force that you are seeking. Most moving magnet cartridges need at least 1.5grams of weight. Set it for 2 grams if you are unsure of what your is or needs.
  4. adjust the anti skate dial(if you have one) to the same number as the tracking force you are using.
At this point you should be able to gently bounce the tone arm on your index finger(not above the record of course). This is about all there is to it.

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

Jul 13, 2008 | Fisher Audio Players & Recorders

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

Early tone arm pickup


On some record players there is an adjusting screw at the back of the tone arm that adjusts the tone arm drop in location but I don't think it will adjust the pick up point. That is controled by a steel rod under the record player deck that moves over and pushes a little trip lever near the center of the platter so that a gear is engauged and the end of record cycle is started. I'm not sure but you may be able to find an adjustment under the deck that is near the rotation point of the tone arm that will adjust that rod so that it will pickup later. Hope this helps some.

Dec 26, 2007 | Teac GF-350 CD Shelf System

Not finding what you are looking for?
Technics SL-BD20D Turntable Logo

Related Topics:

30 people viewed this question

Ask a Question

Usually answered in minutes!

Top Technics Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5686 Answers

Ben Armstrong

Level 2 Expert

360 Answers

The Knight
The Knight

Level 3 Expert

76100 Answers

Are you a Technics Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...