Some new generation 18" and 21" pro-audio woofers and subwoofers are rated at 1500W-2000W r.m.s. and 3000W-4000W program and have long enough Xmax to be able to take so much power with proper eq, crossover and enclosure. New motor arrangements (with neodymium magnets) allow for much better voice coil heat exchange.
Transducer designers are kind of stuck to 8 ohm impedance, increasing amplifier voltage requirements, while optimum voltage swing for current low-cost MOSFET technology is below +/-200V and going above that increases complexity and reduces (cost) efficiency remarkably. Only few of these high power drivers are available in 4 ohm.
Amplifiers to drive these new speakers are needed. With the 10k/2.66 ohm rating, the PKN seems intended for driving 3 high power 8 ohm 18" or 21" speakers per channel in arrays of (sub)woofers. It's not uncommon to array one dozen or two.
There are also more cost effective 15" and 18" drivers rated at 700W-1200W r.m.s. My 6k/2r amp is intended for driving 4 of these (usually two dual enclosures).
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I would imagine an amp or this power would mostly be used for Sub or Infra Sub duty. If the amp proves to be a reliable design, I can't see why not to put a few or more boxes on one amp.
The fact is, very few if any companies that would use an amp of this fortitude would run more than a few (the norm is around three) line array boxes per amp channel. The manufactures suggestion, or rule depending on how you look at it, is often for three boxes to keep loads on the amps sensible. Also, array shading is almost always used on large arrays, so breaking them up into groups is key.
The fact is, very few if any companies that would use an amp of this fortitude would run more than a few (the norm is around three) line array boxes per amp channel. The manufactures suggestion, or rule depending on how you look at it, is often for three boxes to keep loads on the amps sensible. Also, array shading is almost always used on large arrays, so breaking them up into groups is key.
PRECISION DEVICES (UK) has 16R versions of all its 8R speakers.
Generally 1- 1.5dB better sensitivity compared to the 8R version 😉
Much smaller speaker cables would be OK too..
Generally 1- 1.5dB better sensitivity compared to the 8R version 😉
Much smaller speaker cables would be OK too..
Eva, AndreSPi,
Thanks for this information. Had fun looking at the Precision Devices site. The Brits are doing it again. But even their 24" model is limited to "only" 1000 watts. 18 Sound has a 1400 w 21" model, but that is at 8 Ohm.
Would like to know who is king of the hill now in this respect. Anyone for brand names?
vac
Thanks for this information. Had fun looking at the Precision Devices site. The Brits are doing it again. But even their 24" model is limited to "only" 1000 watts. 18 Sound has a 1400 w 21" model, but that is at 8 Ohm.
Would like to know who is king of the hill now in this respect. Anyone for brand names?
vac
Jogi59, these are monster speakers, but I don't see how even with these you could effectively use 10KW/channel. B&C is 4 Ohm, 18Sound is 8 Ohm, and 2400 Watt program, so that's 1200 Watt AES. In short, even with these giants, I don't see any configuration that could put to good use so much power.
Still wondering.
Vac
I think you're misreading the spec. It's 10kW into 2.66 ohms, so that's 3x 8 ohms drivers in parallel. So 3x 1600W RMS/2000W AES drivers in parallel would fit nicely. E.g. these http://www.paudiothailand.com/pdf/products/SD21-2000N4.pdf
Saturnus, with the driver you linked to, you would be coming close, while allowing for a lot of headroom etc.
It's actually perfect. AES power handling is in professional circuits referred as nominal power handling. Program power handling is usually about twice the AES rating. So that'd make 3x drivers like those above in parallel have program power handling of around 12kW. Usually you'd say about 20% less when installed in a cabinet to be on the safe side in regards to less optimal ventilation of the drivers and so on, so pretty much a perfect match.
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Just ASTOUNDING !!!!!and obviously NOT for DIY, lol.....
Insane, Bizarre, Weird, Amazing, Wonderful, Incredible.....Maybe the highest power amp ever insane 40.000Watts!!!
PKN 3PHASE power amplifier
THREE PHASE 400VAC POWER
In the meantime PKN published some papers how did they make it.
http://www.pknc.com/3phase/3phase_PSU.pdf
It is obviously not an average level of technology or at least not in the professional audio filed. My friends heard/tested these monsters on large subwoofers as well as full-range high output NEXO boxes the have been speaking about the highest level of sound quality, dynamics and headroom.
http://www.pknc.com/3phase/3phase_PSU.pdf
It is obviously not an average level of technology or at least not in the professional audio filed. My friends heard/tested these monsters on large subwoofers as well as full-range high output NEXO boxes the have been speaking about the highest level of sound quality, dynamics and headroom.
PKN come from a "proper engineering" background making high-power switch-mode laboratory-grade power supplies; from what I've read their amps do exactly what they say on the tin, their power specs are both clear and accurate, and the amps are very well suited to the intended application.
They don't claim the amp will deliver 40kw continuously for ever on sinewaves, and nor does it need to given the fact that it's intended to drive exactly the kind of speakers that Eva mentioned (3 parallel 8 ohms 1500-2000W continuous rated drivers) per channel with music -- on their previous amps independent tests showed that their amps can deliver the rated power continuously for about a minute (longer than any possible musical application) and then they drop back to maybe 1/2 power.
Given that anything more than this would certainly destroy the above-mentioned (and very expensive drivers) it's difficult to see in what way the power rating is inaccurate or inflated.
And speaking as an engineer who knows about high-speed high-power circuits, what PKN have done is absolutely at the leading-edge of what is possible in high-power PSU/amp design and is in a different league to anything else I've seen in the audio field -- even Powersoft are more conventional in comparison.
Sure PKN amps are in the top range in design and build quality. Finally our company does not have those expensive Three phased amps but many of XD6000 and XE6000 have been in service since long time and we are very happy with them. Booth their high reliability and sound quality are unbeatable especially on that price .-)
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