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Best Powersoft for 6*2151

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Sinai Sound View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sinai Sound Quote  Post ReplyReply Direct Link To This Post Posted: 02 March 2017 at 10:41am
Originally posted by toastyghost toastyghost wrote:

Originally posted by MarjanM MarjanM wrote:

Kyle, you said X4 can do subs at 2 ohms too.
That intrigued me a lot. I can run 8 2400W double 18s from one amp :-)
Sounds tempting, although i dont really need it . :-)


For most usage and with the right power it can. You'd be feeding them 3 phase for that.

I actually had K20 and X4 into the same sub in the warehouse the other day and I prefer the tone of the X series, it was deeper and warmer than the K. But in practice more power is needed sometimes.

On certain gigs when outright power isn't needed through my subs, I've taken just the x4 to power a 3 mid top x 3 sub stack

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2017 at 10:15pm
so the K20 is home thanks Chris for keeping your word .
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2017 at 11:44pm
Niice. May serve you well and long.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2017 at 9:04pm
Now I don't know what this guy is doing , does anyone think this would work , I just read this in another forum ,
"I work daily with Powersoft K10 Digam, we use it primarily to pull some of our bottoms (MARTIN AUDIO WSX) and I must say it does well I have tried up and pull 5bins per channel, where it played techno for 16 hours without problems, it is truly an amplifier you can rely on, have not experienced some form of error in the in the almost 2.5 years I have work with it! so K10 think I'd be a bold invistering you possibly K8 can do it, I would say do not know so much lab'en so that I can not comment on."
If this is right then I could push 4*21" per side with the K20 ,
Our first night out was last night , everything went perfect, 4*2150 and the amp just kept saying it was only using 3.6amperes, next time we'll try 6*2150 .
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2017 at 9:58pm
The K20 will safely drive 4 off 8 ohm drivers per channel with no drama whatsoever. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2017 at 12:22am
Originally posted by csg csg wrote:

The K20 will safely drive 4 off 8 ohm drivers per channel with no drama whatsoever. 


Our little setup lastnight against six tubby scoops, I'l see if I can get pics of both setups ,
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Post Options Post Options   Thanks (0) Thanks(0)   Quote U.Viktor Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2017 at 9:38am
It is entirely untrue, sound quality drops seriously with the lower loading impedance.
We use 4 Ohm loading per channel Powersoft K10 + Martin WSX, bellow 4 Ohm such 2.6 Ohm some of the headroom noticeably lost,also SPL drops when driven with more dense signals.
There is NO amp in the world which would perform as good on 2R than 4R.
The difference is between the amps that few is better (but not good) and most are worse...

You can not neglecting the physics to work with such big drivers, there are effects degrading damping factor (despite the tricks to compensate it) as well as parallel connected drivers have always some interaction where the source impedance to control/damp it has the most important role. unfortunately this is increased by the most with the number of parallel connected drivers, and finally affecting the phase-coherence of your radiating surfaces...
Another thing is that bad idea to approach the maximum sustained <charging> capability of your amplifier, which is around 4-5KW with the Powersoft K10/20 because of loosing headroom.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Darkstar Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2017 at 9:54am
Originally posted by nickyburnell nickyburnell wrote:

3 x K20!  Thats a load of money!

The difference in price between K10 and K20 is not huge though. Here in Italy it is now lower than a thousand euros.

Edit: It's actually much less, 300 euros to be precise.

Edited by Darkstar - 13 March 2017 at 11:15am
Bass =/= Enough
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tv00 Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2017 at 11:12am
Originally posted by U.Viktor U.Viktor wrote:

It is entirely untrue, sound quality drops seriously with the lower loading impedance.
We use 4 Ohm loading per channel Powersoft K10 + Martin WSX, bellow 4 Ohm such 2.6 Ohm some of the headroom noticeably lost,also SPL drops when driven with more dense signals.
There is NO amp in the world which would perform as good on 2R than 4R.
The difference is between the amps that few is better (but not good) and most are worse...

You can not neglecting the physics to work with such big drivers, there are effects degrading damping factor (despite the tricks to compensate it) as well as parallel connected drivers have always some interaction where the source impedance to control/damp it has the most important role. unfortunately this is increased by the most with the number of parallel connected drivers, and finally affecting the phase-coherence of your radiating surfaces...
Another thing is that bad idea to approach the maximum sustained <charging> capability of your amplifier, which is around 4-5KW with the Powersoft K10/20 because of loosing headroom.


I agree that low impedance looses punch, but cables does a big difference as well, I used to run 3 18s per channel, but notice: 8 ohm is 12 ohm when hornloaded (in my cabs in working range), so actually I also tried firing up 6x18" on a single lab 13k channel, that worked great, but NOTICE: I had 2x 4mm2 conenctions, which adds up to 8mm2 connection to the drivers!


This all leads me to a question that you might be able to answer U.victor:
My powersoft repairman used to force digam7000s in bridge mode when testing them with dummyload, he said this was no problem at all and laughed at me saying they're not supposed to run bridge, so is it really safe running a digam amplifier in bridge?
This way I could get some real power bridging it on two high-power drivers (loading each channel minimum 2,67 ohms)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2017 at 11:50am
They're built in half-bridge configuration as standard, so running in full bridge is actually the best way to maximise the amp particularly at infrasonic frequencies (below 20Hz)

See info in this thread:
http://data-bass.ipbhost.com/index.php?/topic/470-amplifier-comparison-speakerpower-sp2-12000-and-powersoft-k20-dsp-aesop/

I wouldn't personally want to rely on it for a long period of touring but I have done it myself in some specialist acoustics testing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tv00 Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2017 at 12:23pm
WHOW! I got some new testing to do now, then I can actually feed my subs 7000W per 3 pcs :-)
After all they are 1500W rms / 3000W program each, that makes 9000W per 3.
Actually I don't intend to push it to the limits.

So what's the danger about bridging a digam7000 (now I can't wait:-)
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