HD15's and P-Audio drivers

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   We have a small stack of HD15's which are loaded with P Audio Challenger series (C15 LF) drivers. 

Our 8 HD's are powered by a 6k FFA Amp run through a limiter and then a Void Digi-drive. 

The problem I am having is that by the end of every night used there is at least one driver that has ripped. The rips start as creases along the outer rim of the driver that slowly work their way down the paper cone. We have 12 drivers bravely held together with yellow pages and araldite. 

Is there anything I can do? Are Challenger series totally mismatched to HD's? Or perhaps there is a flaw with the driver that others have experienced? Or perhaps we have abused our speakers? Please anyone got any leads?

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abacus Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 23 February 2005 Location: Virgin Islands Status: Offline Points: 20	Post Options Post Reply Quote abacus Report Post Thanks(0) Quote Reply Topic: HD15's and P-Audio drivers Posted: 05 June 2007 at 2:28am
	We have a small stack of HD15's which are loaded with P Audio Challenger series (C15 LF) drivers. Our 8 HD's are powered by a 6k FFA Amp run through a limiter and then a Void Digi-drive. The problem I am having is that by the end of every night used there is at least one driver that has ripped. The rips start as creases along the outer rim of the driver that slowly work their way down the paper cone. We have 12 drivers bravely held together with yellow pages and araldite. Is there anything I can do? Are Challenger series totally mismatched to HD's? Or perhaps there is a flaw with the driver that others have experienced? Or perhaps we have abused our speakers? Please anyone got any leads?

AdiRCF Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 22 June 2006 Location: Romania Status: Offline Points: 162	Post Options Post Reply Quote AdiRCF Report Post Thanks(0) Quote Reply Posted: 09 June 2007 at 2:29pm
	Do you have a high pass on you're system ?
	Sughi Bughi

mykey Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680	Post Options Post Reply Quote mykey Report Post Thanks(0) Quote Reply Posted: 09 June 2007 at 2:55pm
	I'm guessing the cone is a little softer if you look at the drawing for the HD15 you will see a cone shape wear the driver sits on the baffle (look at baffle 420), at the bottom of the cabinet the back wall is pretty close the the driver and at the top there's plenty of space only the toughest of drivers will survive this ammount of pressure like the PD154 or 1550 if you are going to carry on using that driver I would suggest you put a piece of wood across the baflle at the bottom closest to the back wall of the cabinet to compensate for the amount of pressure differance between the top and the bottom Tony used to do this on some of his cabs and Cerwin Vega did too Hope this helps good luck I can do a sketch for you if you dont understand? Imagine your washing machine glass door is a baffle and it's a third filled with water the top half where there is no water would be the hollow opening of the baffle and the bottom where there's water would be your piece of wood to compensate for pressure can you see where it says "baffle 420" ? Edited by mykey - 09 June 2007 at 3:20pm

Mark James Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5309	Post Options Post Reply Quote Mark James Report Post Thanks(0) Quote Reply Posted: 22 June 2007 at 3:14am
	which model p-audio???
	me so horny me love you long throw horn loaded for her pleasure

Totem Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 07 October 2005 Status: Offline Points: 37	Post Options Post Reply Quote Totem Report Post Thanks(0) Quote Reply Posted: 03 August 2007 at 7:02pm
	We have a similar set up but as yet (touch wood) we have had no problems. Currently I'm using 8xHD15's loaded with Beyma 15G40's and they are driven by an FFA 6000 Although I would have prefered the 154's they actually sound pretty nice and they were the only drivers that I could source quickly at the short notice we had. Can anyone see any similar problems re: strength of the paper cone with these drivers in the HD's? Like I say, no issues yet, but we've only used them about 4 or 5 times.

norty303 Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 18 August 2004 Location: Eastbourne Status: Offline Points: 8806	Post Options Post Reply Quote norty303 Report Post Thanks(0) Quote Reply Posted: 05 August 2007 at 2:57am
	How much power is each driver getting? I've found that with the 154's they don't actually sound any louder when putting more than RMS rating in, and they start to sound distinctly rougher, especially when asking them to play as a full bass bin.
	My laser stuff: Frikkin Lasers

Dom Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 25 February 2004 Location: United Kingdom Status: Offline Points: 1700	Post Options Post Reply Quote Dom Report Post Thanks(0) Quote Reply Posted: 05 August 2007 at 3:27pm
	I've always found the same as Norty... About 5-600W per box always seemed best...
	"It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed."

soundsystemdan Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 04 April 2005 Location: Leeds UK Status: Offline Points: 716	Post Options Post Reply Quote soundsystemdan Report Post Thanks(0) Quote Reply Posted: 05 August 2007 at 3:57pm
	I sometimes run them (cautiously) with 1000w, RCF L15G600 or something like that - but hpf at 75Hz.
	http://dancomsound.com

Totem Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 07 October 2005 Status: Offline Points: 37	Post Options Post Reply Quote Totem Report Post Thanks(0) Quote Reply Posted: 06 August 2007 at 4:52pm
	I assume you asking Abacus, Norty? Although, for the record, I'm putting between 500 & 650 w through mine.

Mike Severloh Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 20 March 2006 Status: Offline Points: 43	Post Options Post Reply Quote Mike Severloh Report Post Thanks(0) Quote Reply Posted: 20 November 2007 at 1:47pm
	After using Beyma 15G450/N drivers in my short-cut Martin 115 bins successfully for a while I recon they could be _the kick_ in HD15s ...
	Mike Severloh.

odc04r Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5482	Post Options Post Reply Quote odc04r Report Post Thanks(0) Quote Reply Posted: 20 November 2007 at 2:55pm
	More than 600W each and mine start to get honky at 50Hz HPF

jamie1107 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 03 February 2008 Location: United Kingdom Status: Offline Points: 7	Post Options Post Reply Quote jamie1107 Report Post Thanks(0) Quote Reply Posted: 03 February 2008 at 4:30pm
	thats an odd problem we used challenger 15 600 els 16 of them infact never popped one are the holes in the mounting plate the right size and the edges rounded just wondering if they are catiching an edge on excursion and ripping the cones of all the drivers we tested eminence pd beyma rcf the challenger performed best and just would not give up power wise they were run from an ev p3000s in batches of 2 per channel on a very well managed system but no problems at all