Amplifier switching off!! Please Help

buntydey · 15th August 2010, 20:15

Hi, I am having this problem in my Swift. I have a Pioneer P8000BT HU, with Kicker components in the front, Pioneer components in the rear, Sony 500W amplifier and Blaupunkt TSSeries Sub Woofer.

I like to hear music in loud/full bass (I guess you got what I meant). But recently I am having this problem of the amplifier going into power/protect mode whenever I am turning the volume above 40. One punch in the bass, and the amp is going off. I have to turn the HU off, and then switch it back on, and it again starts.

I showed it to the Sony service center, and they changed the MOSFET circuits, but still the problem persists. I would like to hear the suggestions of you experts

Help!!!!

DerAlte · 15th August 2010, 21:11

Quite simple - the amp is not as powerful as you are assuming. The 500W is misleading, as this may not be the RMS rating.

You need to drive the sub with a good monoblock, like the JBL 301.1.

thelord · 15th August 2010, 21:30

Exactly! And also check the power/ground cables.
I was using JBL wiring kit(probably fake) and after an year it just gave up.

buntydey · 16th August 2010, 09:53

Thanks everyone. My cables are fine, just need to add a mono amp as you all suggested. I am trying to source it from US, so any suggestions on this, apart from the JBL one?

Gilead · 16th August 2010, 10:45

Your gains are probably set way too high, thus tripping the amp. I have not heard the JBL mono, but I have heard the Focal Solid1 powering a Kappa sub and it's very good. Try to catch some reviews online.

15th August 2010, 20:15	#1
buntydey BHPian Join Date: Nov 2005 Location: Toronto, Canada Posts: 155 Thanked: 3 Times View My Garage	Amplifier switching off!! Please Help Hi, I am having this problem in my Swift. I have a Pioneer P8000BT HU, with Kicker components in the front, Pioneer components in the rear, Sony 500W amplifier and Blaupunkt TSSeries Sub Woofer. I like to hear music in loud/full bass (I guess you got what I meant). But recently I am having this problem of the amplifier going into power/protect mode whenever I am turning the volume above 40. One punch in the bass, and the amp is going off. I have to turn the HU off, and then switch it back on, and it again starts. I showed it to the Sony service center, and they changed the MOSFET circuits, but still the problem persists. I would like to hear the suggestions of you experts Help!!!!
	() Thanks

15th August 2010, 21:11	#2
DerAlte Senior - BHPian Join Date: Mar 2007 Location: Bangalore Posts: 8,069 Thanked: 2,919 Times	Quite simple - the amp is not as powerful as you are assuming. The 500W is misleading, as this may not be the RMS rating. You need to drive the sub with a good monoblock, like the JBL 301.1.
	() Thanks

15th August 2010, 21:30	#3
thelord BHPian Join Date: May 2009 Location: Orange County, CA Posts: 278 Thanked: 5 Times	Exactly! And also check the power/ground cables. I was using JBL wiring kit(probably fake) and after an year it just gave up.
	() Thanks

16th August 2010, 09:53	#4
buntydey BHPian Join Date: Nov 2005 Location: Toronto, Canada Posts: 155 Thanked: 3 Times View My Garage	Thanks everyone. My cables are fine, just need to add a mono amp as you all suggested. I am trying to source it from US, so any suggestions on this, apart from the JBL one?
	() Thanks

16th August 2010, 10:45	#5
Gilead Senior - BHPian Join Date: May 2009 Location: Chennai Posts: 2,142 Thanked: 60 Times	Your gains are probably set way too high, thus tripping the amp. I have not heard the JBL mono, but I have heard the Focal Solid1 powering a Kappa sub and it's very good. Try to catch some reviews online.
	() Thanks