Tonsk 0 Posted November 23, 2003 Report Share Posted November 23, 2003 Hello!!! I'm hoping someone can help me with this as its puzzling me (although at 4am, anything puzzles me!) http://www.dj-forum.co.uk/html/emoticons/biggrin.gif I brought a Behringer DX1000 to replace a Numark mixer that I owned. I run 2 600 watt speakers from a Proel 1300 amp from the Behringer. When I used it tonight (and thinking about it the last couple of times as well), the amp started clipping, even though it wasnt very loud.. When I used to use the Numark, it would thump out far more volumn than I got tonight with no clipping lights in sight...... Is the Behringer got a nob http://www.dj-forum.co.uk/html/emoticons/rolleyes.gif that I'm not twiddling? http://www.dj-forum.co.uk/html/emoticons/laugh.gif Obviously I dont want the amp to cut out, just I cant figure why I'm getting less output with more problems?? http://www.dj-forum.co.uk/html/emoticons/014.gif Any help would be greatly appreciated!! Cheers The Right Music - based in Norwich and covering all Norfolk and Suffolk Link to post Share on other sites
johnnyb 0 Posted November 23, 2003 Report Share Posted November 23, 2003 Have you changed from running out a balanced output to unbalanced? Or vice versa? Try different connecting leads to the amp to see if they are the problem. Changing the mixer you use should not effect the output volume. Obviously different mixers have different output sensitivities, but the audiable volume should be at the same level when the amp starts to clip. Link to post Share on other sites
tombeharrell 0 Posted December 10, 2003 Report Share Posted December 10, 2003 I had a scary time with my DX1000 about 3 years ago, I was using it (the function room used an ancient hi-fi type amp) which I thought was the problem, after an hour or two the sound just faded out for several seconds. Tried turning off and on, and some messing about it came back to life. The same thing happened a number of times. Only ever happened with my DX1000 and this one amp though! Perhaps I was clipping the amp and it overheated or something, I'm not sure. Link to post Share on other sites
Loz 0 Posted December 10, 2003 Report Share Posted December 10, 2003 Hi, just on the subject of clipping I too suffer from the same problem. I recently bought a behringer DX1000 to replace my Citronic CDM8:4 I know my amp used to clip before but not on the scale it does now, maybe there is a manufacturing fault or are we not using the mixer properly?? http://www.dj-forum.co.uk/html/emoticons/533.gif Party to the Max, With Happy Traxx Link to post Share on other sites
Tonsk 0 Posted December 11, 2003 Author Report Share Posted December 11, 2003 I still can't figure it out.... I havent had to use the amp and mixer for a while as the hotel I DJ in has it's own equipment http://www.dj-forum.co.uk/html/emoticons/smile.gif http://www.dj-forum.co.uk/html/emoticons/smile.gif http://www.dj-forum.co.uk/html/emoticons/smile.gif Dont you love it when its like that!!! But it is a real concern when I have to go back to using it... Trouble is you cant really set it up at home to try as you're then thumpin 600+ watts of music into your living room/garage and makin real sure that your neighbours don't like you!!! http://www.dj-forum.co.uk/html/emoticons/biggrin.gif Damn disco stuff http://www.dj-forum.co.uk/html/emoticons/rolleyes.gif The Right Music - based in Norwich and covering all Norfolk and Suffolk Link to post Share on other sites
ChrisPointon 0 Posted December 11, 2003 Report Share Posted December 11, 2003 One thing to remember is that some mixers (usually American Manufactured ones) are made for a different input sensitivity of Amplifier. Most standard amplifiers reach their rating with a 0db (0.775mv) input signal, which is roughly 3/4 of a volt. However some Mixers have 1.2v or even 2v outputs, so feeding either of these into an Amplifier will make it clip harder aand sooner. There is nothing wrong with using this type of mixer, providing that you bear in mind that the amplifier is likely reach its full power output, sooner at 1.2v outputs than with a mixer using 0db outputs http://www.dj-forum.co.uk/html/emoticons/smile.gif Link to post Share on other sites
NineLives 0 Posted December 11, 2003 Report Share Posted December 11, 2003 QUOTE There is nothing wrong with using this type of mixer, providing that you bear in mind that the amplifier is likely reach its full power output, sooner at 1.2v outputs than with a mixer using 0db outputs Chris is there any way to tweak the output on the Soundlab Fusion type mixer?, i find its output is is low compared to the other mixers I have. If its to complicated to do I wont bother http://www.dj-forum.co.uk/html/emoticons/laugh.gif Link to post Share on other sites
ChrisPointon 0 Posted December 11, 2003 Report Share Posted December 11, 2003 QUOTE (NineLives @ Dec 11 2003, 12:52 PM) QUOTE There is nothing wrong with using this type of mixer, providing that you bear in mind that the amplifier is likely reach its full power output, sooner at 1.2v outputs than with a mixer using 0db outputs Chris is there any way to tweak the output on the Soundlab Fusion type mixer?, i find its output is is low compared to the other mixers I have. If its to complicated to do I wont bother http://www.dj-forum.co.uk/html/emoticons/laugh.gif Are you using the balanced XLR Outputs of the Mixer or the Rec / Booth Outputs?, and if so are you using it in balanced mode (XLR Mixer out to XLR in Amplifier)??. Link to post Share on other sites
ChrisPointon 0 Posted December 11, 2003 Report Share Posted December 11, 2003 QUOTE (NineLives @ Dec 11 2003, 12:52 PM) QUOTE There is nothing wrong with using this type of mixer, providing that you bear in mind that the amplifier is likely reach its full power output, sooner at 1.2v outputs than with a mixer using 0db outputs Chris is there any way to tweak the output on the Soundlab Fusion type mixer?, i find its output is is low compared to the other mixers I have. If its to complicated to do I wont bother http://www.dj-forum.co.uk/html/emoticons/laugh.gif Are you using the balanced XLR Outputs of the Mixer or the Rec / Booth Outputs?, and if so are you using it in balanced mode (XLR Mixer out to XLR in Amplifier)??. If you are still using your Peavey Amp you will find that this is one of the Amplifiers which does have a 1.2v input sensitivity - so the 0.775v from the fusion is slightly lower than the rated input of your amp - hence why you are not seeing it hit full power until your mixer is into clipping. Link to post Share on other sites
Loz 0 Posted December 11, 2003 Report Share Posted December 11, 2003 Why does my amp clip more when tha bass is turned up, does this mean I need bigger speakers or a bigger amp or is it the quality of my equipment. I am currently running four cabs rated at 350w each, one set is powered with a 600w warrior amp and the others are run by a 1500w peavey amp. Party to the Max, With Happy Traxx Link to post Share on other sites
NineLives 0 Posted December 11, 2003 Report Share Posted December 11, 2003 Thanks for the reply Chris, Still using the Peavy , you have a good memory ! http://www.dj-forum.co.uk/html/emoticons/laugh.gif I am using the balanced XLR Outputs from the mixer , the input Gains on the mixer are set to max to give a decent output to the Amp, even then the sliders usually need full travel into mixer clipping to give the Amp a good feed :-) The other mixers can clip the Amp no problem http://www.dj-forum.co.uk/html/emoticons/smile.gif Link to post Share on other sites
tombeharrell 0 Posted December 11, 2003 Report Share Posted December 11, 2003 QUOTE (Loz @ Dec 11 2003, 04:45 PM) Why does my amp clip more when tha bass is turned up, does this mean I need bigger speakers or a bigger amp or is it the quality of my equipment. I am currently running four cabs rated at 350w each, one set is powered with a 600w warrior amp and the others are run by a 1500w peavey amp. Yes, this is occuring because you have run out of voltage, and the peaks in the signal are effectively clipped off. Are you running the amp with the input sensitivity too low? This drives the amp with a big voltage swing, which is good in some ways because you have a better S/N ratio. If you run the input sensitivity levels too high, you'll lose some S/N ratio but won't have the chance of running your mixer to its highest voltage levels. This is the best of both wrongs ;) You can adjust the levels to the 'best' setting by setting the output of your mixer to 0db (on the meters) and adjust the input sensitivity of the amplifiers to just below clipping. To give yourself a little bit of room, turn your mixer up to 2 or 3db, adjust the amp so it just starts clipping, then turn the mixer down again. Now you can set the overall level of the system using your master level on the mixer, and you know exactly how much power you've got left. If you're having to drive your system way beyond this, you need more a powerful/efficient output, i.e. better amp and/or suitable speakers. On a final note, be careful of damaging your speakers by clipping your amp too much. What is happening is that because there is no more voltage available to get those nice bass beats pounding, you're increasing the power of the whole range of music so that the bass beats are clipped (ie. there's no more voltage to give) but the average signal level is very high, i.e. low dynamics in the music. This overall very high level can damage your speakers, which may not be rated high enough continuous power output. With a bigger amp able to deliver the required power for nice bass, you'd not need to drive the speakers so hard (average), and they'd probably be happier. Check the peak and continuous levels you're speakers are rated at. Link to post Share on other sites
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