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Extreme power handling of a PD1850
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PauliePaul View Drop Down
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Points: 1485 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PauliePaul Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2010 at 11:47am
Originally posted by Pirlo Pirlo wrote:


New Question, cheapest quote i've found is 300gpb each, someone know a cheaper place!? Big smile


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Saul View Drop Down
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Points: 11743 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2010 at 12:42pm
Originally posted by mykey mykey wrote:


if it say 800 watts, 800 watts it is, lets not be getting silly now


+10

Nathon HI-1400 outputs "TRUE" 2kwpc @ 4 ohms @ 40-50hz (benched).

Number of sound systems owners have told me, this amp can fully power 2x PD1850s per channel, with headroom remaining.

That tells me an Inf8Mk2 could mince 2x 1850s/V18-1000s per channel easily.

So these drivers just need true 1kW behind them, not psuedo watts.
"Who am I? I'm the guy who does his job.. You must be the other guy".
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noislinger View Drop Down
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Points: 147 		Post Options Post Options   Thanks (0) Thanks(0)   Quote noislinger Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2010 at 1:59pm
i've run a pair of 186 loaded scoops bridged off an inf7 at 0db, think thats 2500w rms per driver.

of course they melted but lasted a good 5 hours flat out. i wouldnt be that surprised if they took 2k rms for an eve, (that is 2k rms by amp rating not continous sine). and who knows maybe the 1850 could have survived the bridged inf7 onslaught? when im feeling rich eh?
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Points: 1719 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Nitz V1505 Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2010 at 7:11pm
The 1850's can take extreme punishment but like with all speakers you have a long term  and short term spec's. Powered sensibly with ample headroom they'll last longer. If you need more spl hook up more subs.   
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Points: 270 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TmanG Quote  Post ReplyReply Direct Link To This Post Posted: 12 April 2010 at 11:39pm
Over excursion is a big killer with some poorly tuned boxes (the ones with ports the sizes , some people tune them faaar too low.

I tend to be conservative and run them at 900rms a piece and haven't had problems, running them at 2kw is just plain foolish... unless all you have with you in a field are two subs for a big 2-3 hour party and the hire covers the recone, but how often does that happen Wink?
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Tony Wilkes View Drop Down
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Points: 4835 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tony Wilkes Quote  Post ReplyReply Direct Link To This Post Posted: 13 April 2010 at 8:59am
Originally posted by TmanG TmanG wrote:

Over excursion is a big killer with some poorly tuned boxes (the ones with ports the sizes , some people tune them faaar too low.

I tend to be conservative and run them at 900rms a piece and haven't had problems, running them at 2kw is just plain foolish... unless all you have with you in a field are two subs for a big 2-3 hour party and the hire covers the recone, but how often does that happen Wink?


@ TmanG  You will not fit in here mate with that attitude, way too sensible!!!  Smile

Tony
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neilpoints View Drop Down
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Points: 976 		Post Options Post Options   Thanks (0) Thanks(0)   Quote neilpoints Quote  Post ReplyReply Direct Link To This Post Posted: 25 April 2010 at 10:12pm
So who plays a sine wave continuously? No, you can run an amp capable of 1200 or 1500W continuous, just short of clipping, into a 1850, so long as you play music, not a sine wave.
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neilpoints View Drop Down
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And the impedance of the driver increases with the load of the air in the cabinet, especially when it's resonant, more so with horns. If the impedance increases to 15 ohms, your 2K amp playing intermittent stuff, like music, even compressed bass, probably won't be averaging more than 800WRMS, and your 1850 will be OK. With an amp that can only put 800W into 8ohms, you might only be putting 300W average into your speaker.

Smile
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levyte357 View Drop Down
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Points: 11743 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 28 April 2010 at 11:14pm
Originally posted by neilpoints neilpoints wrote:

your 2K amp playing intermittent stuff, like music, even compressed bass, probably won't be averaging more than 800WRMS, and your 1850 will be OK. With an amp that can only put 800W into 8ohms, you might only be putting 300W average into your speaker.

Smile


Don't ask to hire any subs from me...Shocked

You need to go to few sound clashes with WSP, Aba Shanti, JTS..

Then you'll hear what 1850 with 900W rms of compressed bass will do...
"Who am I? I'm the guy who does his job.. You must be the other guy".
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neilpoints View Drop Down
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Points: 976 		Post Options Post Options   Thanks (0) Thanks(0)   Quote neilpoints Quote  Post ReplyReply Direct Link To This Post Posted: 29 April 2010 at 12:54am



Edited by neilpoints - 29 April 2010 at 2:39pm
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Points: 976 		Post Options Post Options   Thanks (0) Thanks(0)   Quote neilpoints Quote  Post ReplyReply Direct Link To This Post Posted: 29 April 2010 at 1:02am
Originally posted by neilpoints neilpoints wrote:

And the impedance of the driver increases with the load of the air in the cabinet, especially when it's resonant, more so with horns. If the impedance increases to 15 ohms, your 2K amp playing intermittent stuff, like music, even compressed bass, probably won't be averaging more than 800WRMS, and your 1850 will be OK. With an amp that can only put 800W into 8ohms, you might only be putting 300W average into your speaker.

Smile


it's OK Levyte357, I'll use my own
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