# Bpm sync **URL:** \ **Category:** General Discussion\ **Created:** [February 7, 2011, 3:31pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461 "2011-02-07T15:31:32Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![digiman08](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@digiman08](https://forum.djtechtools.com/u/digiman08)\ **Post date:** [February 7, 2011, 3:31pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/1 "2011-02-07T15:31:32Z")
**Bpm sync** Hi, When I add a track to deck B, while track A is playing (or vise versa) track B syncs some random BPM.. (it never did this before) ..then, when i press track B to sync with A it doesn’t sync to track A.. only if I press on the master tab above the waveform. I think this was caused by changing the preferences (following a tutorial on beatgridding) .. but really not sure.. Can anyone shed some light on this problem?? Cheers 😉 ---
**Author:** ![fullenglishpint](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/fullenglishpint/32/12539_2.png) [@fullenglishpint](https://forum.djtechtools.com/u/fullenglishpint)\ **Post date:** [February 7, 2011, 3:42pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/2 "2011-02-07T15:42:13Z")
what equipment are you using? ---
**Author:** ![digiman08](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@digiman08](https://forum.djtechtools.com/u/digiman08)\ **Post date:** [February 7, 2011, 3:44pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/3 "2011-02-07T15:44:01Z")
yes ofcourse… Mac with traktor scratch pro.. ---
**Author:** ![fullenglishpint](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/fullenglishpint/32/12539_2.png) [@fullenglishpint](https://forum.djtechtools.com/u/fullenglishpint)\ **Post date:** [February 7, 2011, 3:55pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/4 "2011-02-07T15:55:08Z")
and in terms of controllers/mappings? ---
**Author:** ![djchriswoods.co.uk](https://avatars.discourse-cdn.com/v4/letter/d/90ced4/32.png) [@djchriswoods.co.uk](https://forum.djtechtools.com/u/djchriswoods.co.uk)\ **Post date:** [February 7, 2011, 4:12pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/5 "2011-02-07T16:12:58Z")
check your master clock setting is set to Auto, not Int or Ext ---
**Author:** ![digiman08](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@digiman08](https://forum.djtechtools.com/u/digiman08)\ **Post date:** [February 7, 2011, 4:25pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/6 "2011-02-07T16:25:34Z")
i dont really know what controllers or mappings i’m using.. I downloaded a mapping form techtools. but DJCRISWOODS sorted the problem out.. working fine now.. Thanks guys! ---
**Author:** ![Coldfuzion](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/coldfuzion/32/11417_2.png) [@Coldfuzion](https://forum.djtechtools.com/u/Coldfuzion)\ **Post date:** [February 7, 2011, 4:36pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/7 "2011-02-07T16:36:11Z")
Glad you got it worked out, for future reference though - you have to have one track set as the “master” track, so the other track can auto sync to it. The track that you just loaded has to have something for it to sync to, it can’t just sync to some mysterious crazy random perfect number. 🙂 ---
**Author:** ![fullenglishpint](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/fullenglishpint/32/12539_2.png) [@fullenglishpint](https://forum.djtechtools.com/u/fullenglishpint)\ **Post date:** [February 7, 2011, 4:41pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/8 "2011-02-07T16:41:23Z")
> [@Coldfuzion](#): > > Glad you got it worked out, for future reference though - you have to have one track set as the “master” track, so the other track can auto sync to it. The track that you just loaded has to have something for it to sync to, it can’t just sync to some mysterious crazy random perfect number. > > 🙂 UNLESS of course you use the internal master clock and sync to that. Then the mysterious crazy random perfect number is yours to choose. ---
**Author:** ![Coldfuzion](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/coldfuzion/32/11417_2.png) [@Coldfuzion](https://forum.djtechtools.com/u/Coldfuzion)\ **Post date:** [February 7, 2011, 4:43pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/9 "2011-02-07T16:43:05Z")
> [@fullenglishpint](#): > > UNLESS of course you use the internal master clock and sync to that. Then the mysterious crazy random perfect number is yours to choose. Hahaha, alright smarty pants 😛! I completely forgot about the master clock. How does it help though? As in how does syncing to the master clock help when you’re trying to sync two songs together? I mean I guess if you sync’d each to the clock they would both be sync’d together, but that way instead of just having one songs bpm adjusted, they both. ---
**Author:** ![fullenglishpint](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/fullenglishpint/32/12539_2.png) [@fullenglishpint](https://forum.djtechtools.com/u/fullenglishpint)\ **Post date:** [February 7, 2011, 4:46pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/10 "2011-02-07T16:46:15Z")
I never really use it these days but in the past I found it quite useful for b2b DJing with my mate. Set Master to 128 or 140 or whatever you’re playing, beatmatch to each other one and you’re sorted until you want to change tempo or mess things up. Just made it easier to play 1 or 2 songs each or whatever. My beatmatching by ear is better these days though and tbh if you know the precise bpm of both tracks then it’s not exactly a challenge! ---
**Author:** ![Coldfuzion](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/coldfuzion/32/11417_2.png) [@Coldfuzion](https://forum.djtechtools.com/u/Coldfuzion)\ **Post date:** [February 7, 2011, 4:49pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/11 "2011-02-07T16:49:33Z")
> [@fullenglishpint](#): > > I never really use it these days but in the past I found it quite useful for b2b DJing with my mate. Set Master to 128 or 140 or whatever you’re playing, beatmatch to each other one and you’re sorted until you want to change tempo or mess things up. Just made it easier to play 1 or 2 songs each or whatever. > > My beatmatching by ear is better these days though and tbh if you know the precise bpm of both tracks then it’s not exactly a challenge! Ohhh, I gotcha! That makes perfect sense. Dude I got a hands on beatmatching 101 lesson on vinyl (prior to this I had never touched vinyl) by CharlesFeelgood, JesC, and Xtianw. It was really frigin awesome, and so different. It’s so crazy to play vinyl after being so used to my S4 and laptop screen to help me. This profession never ceases to amaze me, there’s always something new you can learn, and as time goes on like Richie Hawtin said in Eans interview more and more gear is being built that is completely different from stuff we’ve ever seen so it’s making it so much easier to express your musicality through the equipment. God damn man I love DJing. End of my rant off topic 🙂. ---
**Author:** ![fullenglishpint](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/fullenglishpint/32/12539_2.png) [@fullenglishpint](https://forum.djtechtools.com/u/fullenglishpint)\ **Post date:** [February 7, 2011, 5:19pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/12 "2011-02-07T17:19:31Z")
I keep meaning to spend a fucking long time practicing with either some of my real vinyl or my timecodes without phase meter or anything to get my aural beatmatching spot on. I’m ok, and can pull off a reasonable mix with either CDJs or Technics, but I wouldn’t call myself a pro. Sadly since my Decks et al are back in the UK that won’t happen for some time 😞 ---
**Author:** ![digiman08](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@digiman08](https://forum.djtechtools.com/u/digiman08)\ **Post date:** [February 7, 2011, 6:14pm UTC](https://forum.djtechtools.com/t/bpm-sync/19461/13 "2011-02-07T18:14:55Z")
hey man, can i ask you a quick question.. when i beat grid my tracks.. lets say the track bpm is 125.856.. and i manually set it to 126. ..then when i beat grid the track, if the beats are off a tad, and i nudge them left or right.. the bmp value changes slightly away from the rounded 125.990.. Is it okay to leave it as that? or is it better to keep the bpm to a rounded off number? ie 126