Advice needed! - How to run 12 small speakers from 1 amp using a splitter
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From: Laurence Payne on 26 Mar 2010 11:22 On Fri, 26 Mar 2010 07:08:54 -0700 (PDT), wardy <conor2000(a)yahoo.co.uk> wrote: >I have a decent background in sound engineering and live mic/desk >setups, however I am no expert. >I want to find the best way of installing a particular system in a >public venue. > >I am installing a Technics amp with normal Stereo output (+- L and +- >R) >I have to send the audio thru the amp to 12 separate speakers across a >sprawling venue. You can series/parallel the speakers to present an acceptable load to the amplifier. But it's a kludge, and a fault in one speaker or one connection will very likely bring the whole system down. The right way to do it is with 70v speakers.
From: Laurence Payne on 26 Mar 2010 13:03 On Fri, 26 Mar 2010 09:20:12 -0700 (PDT), wardy <conor2000(a)yahoo.co.uk> wrote: >thanks for all the replies so far. >I have to work with the hardware I've got though, so cannot change to >a 70v amp or speakers. Why? If someone's made a mistake, better to own up and take the loss than to put in a flaky system.
From: liquidator on 26 Mar 2010 16:11 "Laurence Payne" <lp(a)laurencepayne.co.uk> wrote in message news:16qpq5tieneb8utaog7cnbt7saesjoght6(a)4ax.com... > On Fri, 26 Mar 2010 09:20:12 -0700 (PDT), wardy > <conor2000(a)yahoo.co.uk> wrote: > >>thanks for all the replies so far. >>I have to work with the hardware I've got though, so cannot change to >>a 70v amp or speakers. > > Why? If someone's made a mistake, better to own up and take the loss > than to put in a flaky system. He's also wrong. all he needs to do is add transformers. Done it a hundred times.
From: Phil Allison on 26 Mar 2010 20:11 "liquidator" > He's also wrong. all he needs to do is add transformers. Done it a hundred > times. ** Really ?? Not with domestic amps like Technics. Such amps are never intended to drive 70 volt line ( step up) transformers are very likely to be damaged by so doing. The issue is core saturation at low frequencies - hard to avoid completely and deadly on anything but the most rugged amplifiers. ...... Phil
From: liquidator on 26 Mar 2010 20:44
"Phil Allison" <phil_a(a)tpg.com.au> wrote in message news:8150qeFrjeU1(a)mid.individual.net... > > "liquidator" > >> He's also wrong. all he needs to do is add transformers. Done it a >> hundred times. > > ** Really ?? Not with domestic amps like Technics. > > Such amps are never intended to drive 70 volt line ( step up) transformers > are very likely to be damaged by so doing. > > The issue is core saturation at low frequencies - hard to avoid > completely and deadly on anything but the most rugged amplifiers. > > > ..... Phil > > Interesting. Have done it dozens of times. Tend not to use Technics, and do use quality transformers. What about a coupling capacitor or would that be a bad idea? You are the one whose judgement I respect, perhapsI have just been lucky. |