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Junior Varsity
Behringer iNUKE NU6000 amplifier
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<blockquote data-quote="Timo Ulkuniemi" data-source="post: 98259" data-attributes="member: 1978"><p>Re: Behringer iNUKE NU6000 amplifier</p><p></p><p>Hello again</p><p></p><p>One final try - you all are busy trying to help me, but no-one has understood my question. </p><p></p><p>Background - I have been running, designing, building etc active and passive 2-4- way soundsystems over twenty years.</p><p></p><p>Right now my pa-rack has two iNuke 6000DSP running a pair of JBL EVO cabinets, whos amps are blown... Plus one Carver PT1250 driving four 8-ohm cabinets with single 18</p><p></p><p>Top cabinet processing is taken care of in iNukes, who get their signal as LR from X32</p><p>Sub processing is done in X32, while I use dedicated sub out - Mono/center</p><p></p><p>So everything goes fine and my clients are happy.</p><p></p><p>Naturally having all amps in one rack leads to long leads....</p><p></p><p>Doing some reading a while ago about how cables affect damping factor , I decided to change my system a bit. This has also to do with the fact, that X32 Rack is on its way and I shall rerack my stuff anyways...</p><p></p><p>I have been very happy with my two iNuke amps. Then again, my Carver is OLD. I have 9 of them and most of them have PSU issue, and I think I let good old friends retire into something lighter and get two more iNuke 6000DSP instead.</p><p></p><p>New system would have a 4 unit rack on both sides of stage right behind speakers. Goodbye long heavy cables - welcome new lighter cables.</p><p></p><p>If I should do the amps in traditional way, I would have two options for cabling.</p><p>- option 1. Top cabinet - 4-wire cable from first iNuke. Subs - two 2-wire cables from second iNuke</p><p>- option 2. Top cabinet as above. Subs - Y-cable from iNuke to two subs. iNuke has option to output both channels from single connector - as is done with top cabinets.</p><p></p><p>If I run the amps the way my original question was about, wiring would be as option 2 with the exeption, that cable connected to polarity-reversed amp channel would need to be reversed, too in order to keep all cabinets in same polarity.</p><p></p><p></p><p>Now back to the original question for last time !!!</p><p></p><p></p><p>As most amplifiers run on +/- supply rails, they can benefit of connecting the channels in opposite polarities - as is done in Carver M-500t home amplifier. When a strong pulse needs power, it can surge it from both positive and negative capacitors - one channel uses positive energy and the other uses negative energy - thus improving amp performance. Obviously there is no benefit, when signal approaches sinewave. But I intend to keep my stuff dynamic.</p><p></p><p>So the original question was about iNuke- amps internal life : does it benefit of running the two channels in opposite polarities or not?</p><p></p><p>Thanks for attention.</p></blockquote><p></p>
[QUOTE="Timo Ulkuniemi, post: 98259, member: 1978"] Re: Behringer iNUKE NU6000 amplifier Hello again One final try - you all are busy trying to help me, but no-one has understood my question. Background - I have been running, designing, building etc active and passive 2-4- way soundsystems over twenty years. Right now my pa-rack has two iNuke 6000DSP running a pair of JBL EVO cabinets, whos amps are blown... Plus one Carver PT1250 driving four 8-ohm cabinets with single 18 Top cabinet processing is taken care of in iNukes, who get their signal as LR from X32 Sub processing is done in X32, while I use dedicated sub out - Mono/center So everything goes fine and my clients are happy. Naturally having all amps in one rack leads to long leads.... Doing some reading a while ago about how cables affect damping factor , I decided to change my system a bit. This has also to do with the fact, that X32 Rack is on its way and I shall rerack my stuff anyways... I have been very happy with my two iNuke amps. Then again, my Carver is OLD. I have 9 of them and most of them have PSU issue, and I think I let good old friends retire into something lighter and get two more iNuke 6000DSP instead. New system would have a 4 unit rack on both sides of stage right behind speakers. Goodbye long heavy cables - welcome new lighter cables. If I should do the amps in traditional way, I would have two options for cabling. - option 1. Top cabinet - 4-wire cable from first iNuke. Subs - two 2-wire cables from second iNuke - option 2. Top cabinet as above. Subs - Y-cable from iNuke to two subs. iNuke has option to output both channels from single connector - as is done with top cabinets. If I run the amps the way my original question was about, wiring would be as option 2 with the exeption, that cable connected to polarity-reversed amp channel would need to be reversed, too in order to keep all cabinets in same polarity. Now back to the original question for last time !!! As most amplifiers run on +/- supply rails, they can benefit of connecting the channels in opposite polarities - as is done in Carver M-500t home amplifier. When a strong pulse needs power, it can surge it from both positive and negative capacitors - one channel uses positive energy and the other uses negative energy - thus improving amp performance. Obviously there is no benefit, when signal approaches sinewave. But I intend to keep my stuff dynamic. So the original question was about iNuke- amps internal life : does it benefit of running the two channels in opposite polarities or not? Thanks for attention. [/QUOTE]
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