Subwoofer distortion problem

lordy · 14th January 2004, 10:12 PM

i have recently purchased a 500w rms 4ohm zeuz subwoofer for djing purposes. I am currently powering it off a 300w rms per channel @ 4ohm amp. The speaker distorts at low volume levels so if i were to purchase a 500wpc @ 4ohm amp would it make a big difference in sound quality, power and distortion levels?

cheers
Lordy

roddyama · 14th January 2004, 10:29 PM

What frequency do you have the x-over set to? Something sounds fishy here besides the speaker.

lordy · 14th January 2004, 10:37 PM

The lower limit is 25hz and the higher is 145hz

Guss · 14th January 2004, 10:38 PM

Then try lowering the cutoff of the beast.

lordy · 14th January 2004, 10:41 PM

Ive tried that b4 it didnt make a diff, could i have damaged my amp when my last speaker broke ?

roddyama · 14th January 2004, 10:48 PM

Quote:

Originally posted by lordy
The lower limit is 25hz and the higher is 145hz

Does that mean that the box is tuned to have an f3 of 25Hz and you're using an active x-over at 145Hz (which as Guss indicates is a bit too high)? I thinking that there's something wrong with the x-over and the signal is not getting to the speaker. You should have plenty of SPL from a 300Watt amp. Another 2db or 3db of amp power isn't going to fix this problem.

lordy · 14th January 2004, 10:58 PM

25hz is the low cut from the active cross over and when i say it distorts at low levels i mean compared to my main speakers

Guss · 14th January 2004, 11:34 PM

Change your source, and everything you got controll on in your audio chain, bypass active xo...

lordy · 15th January 2004, 07:12 PM

I plugged my cd player into my amp and theres no differance it still distorts and clips at a relativly low volume thanks for your help n e way.

Bull · 15th January 2004, 08:21 PM

Well Zeuz is very simular to Bumper in specs,looks and materials used, and both of these ain't that good quality.Also i don't know what amp your using but 4ohms clips more easily than 8 ohms,and pushing a lot of low bass content though a cheapy speaker especially at 25 hz can damage the voice coil by overheating and or over excersion.
25hz amplified by the amp makes a lot of heat,possibly causing the amp to clip prematurely and into 4 0hm it produces even more heat.
Or if the amp isn't clipping u got a defective driver caused by a manufacting defect in speaker when made.

14th January 2004, 10:12 PM	#1
lordy diyAudio Member Join Date: Feb 2003 Location: Manchester UK	Subwoofer distortion problem i have recently purchased a 500w rms 4ohm zeuz subwoofer for djing purposes. I am currently powering it off a 300w rms per channel @ 4ohm amp. The speaker distorts at low volume levels so if i were to purchase a 500wpc @ 4ohm amp would it make a big difference in sound quality, power and distortion levels? cheers Lordy

14th January 2004, 10:29 PM	#2
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	What frequency do you have the x-over set to? Something sounds fishy here besides the speaker. __________________ Rodd Yamashita

15th January 2004, 08:21 PM	#10
Bull diyAudio Member Join Date: Oct 2002 Location: ...........	reply Well Zeuz is very simular to Bumper in specs,looks and materials used, and both of these ain't that good quality.Also i don't know what amp your using but 4ohms clips more easily than 8 ohms,and pushing a lot of low bass content though a cheapy speaker especially at 25 hz can damage the voice coil by overheating and or over excersion. 25hz amplified by the amp makes a lot of heat,possibly causing the amp to clip prematurely and into 4 0hm it produces even more heat. Or if the amp isn't clipping u got a defective driver caused by a manufacting defect in speaker when made.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
X-150 distortion problem	jeffjazz	Pass Labs	2	13th March 2009 10:16 PM
Seek AGC circuit with low distortion for subwoofer!	GPE	Analog Line Level	1	3rd January 2007 10:40 PM
SI Distortion Problem	Davet	Class D	1	3rd September 2006 01:30 PM
Where can I find subwoofer harmonic distortion and CSD plots?	owdi	Subwoofers	6	22nd January 2006 03:08 AM
Odd distortion problem	wintermute	Solid State	16	10th October 2004 02:40 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

14th January 2004, 10:37 PM	#3
lordy diyAudio Member Join Date: Feb 2003 Location: Manchester UK	The lower limit is 25hz and the higher is 145hz

14th January 2004, 10:38 PM	#4
Guss diyAudio Member Join Date: Jun 2003 Location: Montreal	Then try lowering the cutoff of the beast.

14th January 2004, 10:41 PM	#5
lordy diyAudio Member Join Date: Feb 2003 Location: Manchester UK	Ive tried that b4 it didnt make a diff, could i have damaged my amp when my last speaker broke ?

14th January 2004, 10:58 PM	#7
lordy diyAudio Member Join Date: Feb 2003 Location: Manchester UK	25hz is the low cut from the active cross over and when i say it distorts at low levels i mean compared to my main speakers

14th January 2004, 11:34 PM	#8
Guss diyAudio Member Join Date: Jun 2003 Location: Montreal	Change your source, and everything you got controll on in your audio chain, bypass active xo...

15th January 2004, 07:12 PM	#9
lordy diyAudio Member Join Date: Feb 2003 Location: Manchester UK	I plugged my cd player into my amp and theres no differance it still distorts and clips at a relativly low volume thanks for your help n e way.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read