file P-Audio Challenger 18-650EL

12 years 4 months ago #583 by chaudio
Replied by chaudio on topic P-Audio Challenger 18-650EL
It was running from between 30-35Hz at 24dB/oct. Initially it was running off my Crest 8001 and was perfectly happy, however they blew when we changed over to Adams Proline. I don't think we reached full power on the amps.

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12 years 4 months ago #603 by dom
Replied by dom on topic P-Audio Challenger 18-650EL
I blew 3 V18-1000 in exactly the same way, a friend has had similar problems too. It seems doubtful that it's all down to bad batches of drivers.
If you've burnt out a coil then you've obviously been giving them a decent amount of juice.

That much power is enough to cause over excursion below the low tuning of the box which is what breaks the driver...

The answer is 48db slopes at 35hz+ and powered by decent amps running in stereo rather than bridged, with short thick cables so you get maximum control of the cone...

These go to eleven...

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12 years 4 months ago #609 by chaudio
Replied by chaudio on topic P-Audio Challenger 18-650EL
Yup, totally agree but I really don't think I was abusing the drivers.

I'd just like to reiterate the point that in this case there was no evidence of too much heat or physical damage to the voice coil former. It just looked as if the voice coil was never properly attached to the former.

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12 years 4 months ago #624 by nickyburnell
Replied by nickyburnell on topic P-Audio Challenger 18-650EL
This exact scenario was mentioned to me by young Paul at Wembley LS earlier this year when discussing P Audio.
Edited by: nickyburnell

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12 years 4 months ago #751 by nexus_3
Replied by nexus_3 on topic P-Audio Challenger 18-650EL
can you find out the manufacturing date for the speakers that failed.

I think it can be linked to the RoHs restriction (many manufacturers had issues with their adhesives a the time)

I'm saying this because I never had any failures like those, ever


Mircea Bartic

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12 years 4 months ago #752 by chaudio
Replied by chaudio on topic P-Audio Challenger 18-650EL
Adam: can you have a look on the drivers for any date stamps?

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12 years 4 months ago #790 by guest
Replied by guest on topic P-Audio Challenger 18-650EL
will do... I seam to recall 2006 for some reason.

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12 years 4 months ago #1647 by opus jody
Replied by opus jody on topic P-Audio Challenger 18-650EL

NeXuS_3 wrote: I think it can be linked to the RoHs restriction (many manufacturers had issues with their adhesives a the time)



Mircea Bartic


we've had a number of failures now, from various manufacturers, of exactly this type. and I had 16 p audio drivers for 1 1/2 years with no failures. a couple of opus boxes with p audio's in failed where the lead in wires were a bit too short, so snapped, but they were easily fixed, and are still chugging away somewhere.

we now check all cones & re-enforce the glue where necessary.
one of my pd 2450's came half unglued. luckily i heard it sounding wierd, & un plugged it for the night, so it was still repairable.
Edited by: opus jody

opus pocus

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12 years 4 months ago #1913 by tweeter box
Replied by tweeter box on topic P-Audio Challenger 18-650EL
any news on the driver?

Time is longer than road.

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5 years 11 months ago #22281 by Bongo
Replied by Bongo on topic P-Audio Challenger 18-650EL
I don't see any excursion curve, but the xmax is very limited, almost down at 5mm
The new versions claim to be 1200W rms aes!
Wonder how they ever would eat that much power without over excursion or heating

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