damn! what kind of subs and how close to them are you?
Making your needles skip!? not just picking up background noise...
-try to isolate your turntables as much as possible to dampen vibrations.
-also a certain EQ frequency could be causing rumble in the room (around 1000hz)
if possible drop that band of the EQ.

toss some foam or towels under the feet.

add more weight to the tone-arm

use relative mode

Close but no cigar. 1000Hz will not cause 'rumble' in the room.

If you can access the main eq for the system try cutting anything below 40Hz to reduce turntable feedback and unwanted subharmonic frequencies.

Try Isolating your turntables away from he bass bins, if that is not possible try a few 'old school' tricks. Foam hockey pucks under each foot of the decks, tennis balls cut in half and placed flat side down and placed under the feet of the decks. Also this product works well www.planetdj.com i've used these for years, always kept them in my record box along with my SL1200 Emergency repair kit.

^^
yeah, what he said

Yeah, I was going to suggest the Cingular Cellular looking "Free Float" thingees.

Just curious, what else is in the SL1200 Emergency repair kit?

quote FAIL :P

I keep these items in my needle case at all times.

A HB pencil cut to 3" length, using only the eraser end. If you can find an erasable pen that eraser end is better since it's a bit more course. Or you can glue a bit of very fine sand paper on the end of a pencil too.
The HB pencil eraser is a quick way to clean the contacts of your SL1200 tone arm or headshell when you have idiots who lick n' stick their headshells to 'improve' or fix the dreaded 'one side' of the needle issue. Or thinking they are improving the electrical contact of headshell and tone arm. If you have to use a drop of Deoxit on the headshell instead.

A Deoxit Gold or Deoxit 5 pen store.caig.com the greatest cleaner ever.

A min screwdriver www.made-in-china.com actually I have a Extron Tweeker since the shaft is removable and has a phillips on one end and a flat on the other. I also have an extra shaft bent 90 degrees at the last 1/4" of the phillips part so it can reach the tiny screw under the tone arm right behind the tightening collar of the tone arm. This screw gets loose and causes the headshell to tip from side to side.

2 Q tips cut in half. Extra cleaning tips if needed.

These few items usually can be a life saver in the field when you are playing at clubs or events with turntables.

Please if you ever see anyone licking their headshells before putting them into the tone arm, smack them in the head. I've even seen DJ's lick the headphone jack before inserting. 90% of SL1200 issues are because of the 'lick n stick' or a loose screw, if you have these tools with you then you can actually salvage your set and reduce frustrations.

Buy 8 basic ashtrays and a bag of #64 rubber bands: onfinite.com

Wrap each rubber band around the slots of the ashtrays like the picture until you have used 8 rubber bands around each ashtray (2 layers of rubber bands in each slot): onfinite.com

This is the first layer. Repeat until you have 8 rubber bands -- each wound twice -- around each slot position: onfinite.com

Finished set of four (you should have 8 total for both turntables): onfinite.com

Place one isolator under each foot of your 1200's:
onfinite.com
onfinite.com
onfinite.com

You should be good to go.

JC!!! that is fucking awesome!

Prinvale, been using this trick for well over 20 years.

Dag, I forgot about that one LOL. Good remembering

Check those 44-7s too. Sometimes they work great... sometimes not so great.

Calibrate Scratch Live.

yes, it's good to calibrate SSL often.
-but it wouldn't prevent needles from skipping, calibrate your turntable?

no calibration can help the needle jumping around from the low frequencies of a sub.
either do one of the work arounds posted above or move the sub away from the turntables

I didn't know about that one OJ, crazy. Much better than those stupid granite suspension cases with the turntables flying around the box all night. We always just used tennis balls.

Where does it say the needles are jumping?

Sooo.... that statement rules out a calibration tracking issue???

OK :)

good luck Lush..

I hate those suspension cases. I took these pictures a couple of years ago when there was a discussion about TT isolation. I've been using this method for 20 years.

What concerns me is that I RARELY have trouble with isolation issues any more. DJ Lush has them all the time??? I can't help but think that it's either the turntables are faulty or he's setting up WAY too close to his subs.

I've used a couple of these...

www.insulcon.com

or these...

www.toywonders.com

They both worked great!

Oh and if you're in a hurry, I heard this one works too.

www.bombayharbor.com

Yeah I can't remember the last time I had an issue, sometime in the 90's most likely. I think he's just too close to the subs, what else would make the needles physically jump?

hollow dance floor?

I've used those as well.

-or even more likely, a hallow wooden stage/booth

yeah... that's what I meant.

Don't sleep on the needles... everybody loves the 44-7s, but the needles are a bit delicate. They jump and wobble very easily sometimes. Also, the needle can wear down and the cartridge can touch the surface of the record... although, when the needle is worn down that much, that's usually when I've seen them skip less.

If you have some spare needles (of a different brand) I'd give that a shot too just to make sure you rule out any/all causes. I do agree that the subs shouldn't be close to the turntables... that's common sense; but I've spun where the subs were directly under the turntables. The tracking was bad, but it was good enough to read the signal and the needles (wasn't using Shure needles) didn't skip.

Good point... also, along with the needle choice (44-7's are nice and heavy), what do you have your tonearm set to? Height? Weight? Do you KNOW how to set your tonearm properly? Too little weight can cause skipping if there is vibration.

I meant the bearing, not the needle.

I have a dj gig this saturday so ill find out for sure if it was the needles i recently purchased a pare of pink ortofon scratch needles that sound so much better then the m-44 needles so hopefully that was the problem.. and the m-44-7 was set to 3 grams sometimes i might do 4 tone arm height never raised it at all .. anti skip set to 0. using rel mode .. all i no is when im at home there is never a problem mixing but at my last 2 gigs had to turn down my lows ..weather the needle was skipping or jumping i really couldnt tell the difference but it was bad i had to bring the song in an throw it in int mode all night but the promoter said i was hot ..if he only new how many time i messed up..hope sat is better

Basically the subs caused my needles to vibrate to the point where i couldn't dj ..Oodyssey cases where not double stacked not sure if that helps but ill double stack next time .. maybe ill put my decks on a towel in the case just dont want no more vibration sucks dam subs are out of control

I would think if you double stacked your coffin, and put a couple towels in between that would help as well.

YOU. ARE. TOO. CLOSE. TO. THE. SUBS!!!!

yeah. essentially this is your problem. I highly doubt you can work around this problem with ghetto fixes. just put the subs away from the tables

lol thankz