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lag problem

i have another question guys...


i have a lag problem with my new system...

when i try to moniter the cue with one ear and
match with the speakers with the other ear, there is a lag
and it's so hard to mix that i end up having to cue with both cups of my headphones on with both records playing in them.

can i fix this?

unless you run it through alot of digital effect's etc, I see no reason why there should be a delay problem

no man, no digital effects.


the only thing that I can think of is that I have a 20 foot
cable that runs between my tables and the amp... that distance
shouldn't cause lag though right?

nope, not noticable anyway.

hmm, so it's not the cable... ok...

anyone else know what it could be?

acostics of the room maybe?

How close are your speakers to you while you mix?

they're very close to me- like 2 or maybe 3 feet
2 speakers, one to the left and one to the right


it's a really bad problem... i could mix percectly with
my setup at home, but with this lag beatmatching is impossible!

...very frustrating

i reckon it could be 2 things

1- 20m of wire is ludicrous, use shorter wires, it might not affect it much but its enough to fuck you off

2- theres a problem with your mixers cue signal/output signals, what mixer have you got? is it worth getting fixed? does it have master jacks out? (1/4" mono jack) in which case, plug one set of headfones in the normal headfone socket, and the other in one of the master jacks, listen to one in each ear. if it still lags then its your mixer thats fucked.

if you havent got jack output, then try straggling the master outputs.. put one of your rca wires that go to your amp in the red 'master' and the other in the white 'record' output (the names may differ depending on what mixer you have, but most have 2 outputs). if you do this, you will be able to tell if one output is lagging behgind the other, and then you can plug your rca wires into the one that matches the sound from your headfones

hope this helps

quote:

what mixer have you got? is it worth getting fixed?

I have a bottom of the line Behringer DX626 mixer. It's a piece of
crap, but man it does the job...

I don't have that extra headphones jack, so I couldn't try that.

I tried straggling the outputs. No dice.
It's not the outputs that are lagging behind eachother.

All outputs are lagging behind the cue. I mean, I can actually
hear the lag between the sound coming off of the needle and the
sound coming from my speakers.

so the cue signal is fine... its the master output. you need to work out if its a problem before, or after the signal leaves the mixer.. has it got master dB LED display? if so, do the LED's match up with your headfone signal?

try hooking it up with shorter wires, if that doesnt make a difference then try hooking the mixer up to a different amp with different wires.

if you can't get it right after that then your mixer is knackered and you need to buy a new one

yeah, the led's match up with my headphones.
the sound from the speakers is delayed



i wonder if could it be my amp? i mean it's not a real amp- i have my mixer plugged into a bose dvd/cd player because it has
awesome speakers... could the bose system be causing the delay?

quite possibly, as i said try wiring it up trhu a different system if you can, the dvd system may have some kind of sound processing unit within it which could be causeing the delay

thanks a lot for your help

no probz

quote:

Originally posted by tu_face i reckon it could be 2 things 1- 20m of wire is ludicrous, use shorter wires, it might not affect it much but its enough to fuck you off

Hardly - the signal travels along the wire at the speed of light, which is approximately 300000000 m/s. Which means along a 20m cable, the signal takes 20/300000000 = 0.0000000000305 seconds. I don't really think that's enough to notice.

To make even a noticable difference (lets say a tenth of a second) the cable would have to be 0.1 x 300000000 = 3000km, or nearly 2000 miles.

for the sake of closure...

it was the bose system that was causing the lag.

i plugged the mixer into my tv and there was no lag.

my tv's speakers aren't fantastic, but i'd rather mix
on decent speakers with no lag than on excellent speakers
with a lag!

peachy

quote:

Originally posted by DJTJ Hardly - the signal travels along the wire at the speed of light, which is approximately 300000000 m/s. Which means along a 20m cable, the signal takes 20/300000000 = 0.0000000000305 seconds. I don't really think that's enough to notice. To make even a noticable difference (lets say a tenth of a second) the cable would have to be 0.1 x 300000000 = 3000km, or nearly 2000 miles.

ahh you got to pwning him before I did, thumbs up

quote:

Originally posted by Rememberence_ ahh you got to pwning him before I did, thumbs up

haha

i didnt realise it would have to be 2000 miles for it to make any difference!

glad the problem is sorted anyway

The signal travelling at the speed of light? The signal can only travel down the wire a the rate which the wire allows because of its resistance. Longer wire, no matter how short to begin with, will create signal degradation and lag. Longer wire = greater resistance.

Edit: You should leave it on the delayed system, learn to DJ fine on that, then when you spin in a club, you'll have absoutley no probelm with the dealy from the master speakers! lol

quote:

Originally posted by Spin Doctor The signal travelling at the speed of light? The signal can only travel down the wire a the rate which the wire allows because of its resistance. Longer wire, no matter how short to begin with, will create signal degradation and lag. Longer wire = greater resistance.

Yes, longer wire does mean greater resistance, but that doesn't mean a lag is introduced. What it does mean is that you will get a voltage drop over the length of the wire which equates to a quieter signal. The longer wire also introduces more opportunity to pick up radio interference from for example mains cables etc.

What it doesn't do though is add any kind of a noticaeble lag. Think about a big stage set up for example, for a rock concert. The guitars, mics etc are all on long cables that go off backstage, run through amplifiers and signal processors etc, and then come back to the stage where the monitors are. No lag there, and you get cables running to 100m easily.

quote:

You should leave it on the delayed system, learn to DJ fine on that, then when you spin in a club, you'll have absoutley no probelm with the dealy from the master speakers!

aren't there extra speakers in the dj booth with no delay?

quote:

Originally posted by Spin Doctor [COLOR=#999999]The signal travelling at the speed of light? The signal can only travel down the wire a the rate which the wire allows because of its resistance. Longer wire, no matter how short to begin with, will create signal degradation and lag. Longer wire = greater resistance.

no. Resistance does not slow down the signal. Damn I am sick of people giving false information so proudly because they care more about sounding intelligent than actually helping someone out. Think before you post please.

quote:

Originally posted by stevebutabi aren't there extra speakers in the dj booth with no delay?

Not all clubs do! Even some that do, don�t have powerful enough ones to give a decent sound.

quote:

Originally posted by Rememberence_ no. Resistance does not slow down the signal. Damn I am sick of people giving false information so proudly because they care more about sounding intelligent than actually helping someone out. Think before you post please.

Right, you picked the wrong user to have a go at this morning. I got no sleep and I�m in a bitch of a mood!

Damn, I�m sick of over pretentious wankers with a holier than thou attitude prancing around like they know everything. I posted what I though to be correct information, because I though it to be correct. It was not �giving false information so proudly because� I �care more about sounding intelligent than actually helping someone out.� My aim was to relay my understanding of the situation, in an effort to add to the discussion, and contribute to a greater understanding of the issue as a whole. From DJTJ�s post it is evident that I got the wrong end of the stick, fine I accept that. However, if you want to prove your point in the future, take a leaf from DJTJ�s book, instead of just having a go. Think before you post please.

Thank you and goodbye.

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