Wiring fronts and rears: A rookie's question!

kvish · 3rd May 2007, 12:32

Sirs,

I have a pioneer 6850 Hu which is currently driving JBL (5.25) components in the front. I dont have rear speakers. Earlier I was thinking of driving a small bass tube with the two outputs, but then gave up on that idea. The two rear outputs are not being put into use, so I was thinking of wiring both of them into the fronts. Is that advisable?? I think JBL Gto comps are rated at 50W RMS, and pioneer hu's are 22W, so I am thinking wiring the fronts and rears should still be managable for the JBLs?

Even if it means a slight risk, I dont want to take it, I am enjoying the setup as is....jusshht looking for little more enjoyment

Please advice...

low_bass_makker · 3rd May 2007, 12:41

how are you going to wire it....I did not got your point.....

headers · 3rd May 2007, 12:55

Kvish..are you suggesting that both the front and rears are connected to the same speaker?? kindly clarify..

Even if you do that you may not get double the power!!

hydrashok · 3rd May 2007, 12:56

@kvish, if you wanted to know whether you can bridge the output of the HU to 2 channels so you can drive the fronts with double power, I'm afraid that will not be possible.

navin · 3rd May 2007, 13:17

Quote:

Originally Posted by kvish

Sirs,

I have a pioneer 6850 Hu Please advice...

Dont do it. you will most likely damage the amp in your HU.

esteem_lover · 3rd May 2007, 13:26

Why is it that we can bridge 2 channels from an amp but not from the HU ?

headers · 3rd May 2007, 13:36

Quote:

Originally Posted by esteem_lover

Why is it that we can bridge 2 channels from an amp but not from the HU ?

Guess its a Short of sorts!

kvish · 3rd May 2007, 14:15

I started the topic with this as an assumption:
"If we can bridge 2 channels from an amp then it should be possible from HU...."

"x 2" ....which was rightly pointed out by esteem_lover...

So now its clear, I will stay away...

thanks everyone!!

navin · 3rd May 2007, 15:09

not all amplifer circuits can be bridged.

esteem_lover · 3rd May 2007, 15:38

Quote:

Originally Posted by navin

not all amplifer circuits can be bridged.

What is the reason behind it, in layman terms ?

Jaggu · 3rd May 2007, 17:42

anyway of bridging to run a sub using the rear channel? or is that also impossible?

Sam Kapasi · 3rd May 2007, 19:26

bridging any amplifier is only possible, if the amplifier is constructed to be bridged. If an amplifier not designed to be bridged, is bridged, then you will blow the output section.

You will find that almost all car amplifiers and professional amplifiers are constructed in that way.
Most consumer grade amplifiers (home theatre and stereo) are not constructed that way. Neither are 99% of all car stereo head units.

This means you cannot combine the channels of your 6850 to deliver more power to your speakers. You will blow up the HU. 100%.

navin · 4th May 2007, 15:48

Quote:

Originally Posted by esteem_lover

What is the reason behind it, in layman terms ?

Layman Sam, just did! :-)

3rd May 2007, 12:32	#1
kvish BHPian Join Date: Jan 2006 Location: Bangalore Posts: 627 Thanked: 195 Times	Wiring fronts and rears: A rookie's question! Sirs, I have a pioneer 6850 Hu which is currently driving JBL (5.25) components in the front. I dont have rear speakers. Earlier I was thinking of driving a small bass tube with the two outputs, but then gave up on that idea. The two rear outputs are not being put into use, so I was thinking of wiring both of them into the fronts. Is that advisable?? I think JBL Gto comps are rated at 50W RMS, and pioneer hu's are 22W, so I am thinking wiring the fronts and rears should still be managable for the JBLs? Even if it means a slight risk, I dont want to take it, I am enjoying the setup as is....jusshht looking for little more enjoyment Please advice...
	() Thanks

3rd May 2007, 12:41	#2
low_bass_makker Senior - BHPian Join Date: Mar 2006 Location: Faridabad Posts: 6,815 Thanked: 305 Times View My Garage	how are you going to wire it....I did not got your point.....
	() Thanks

3rd May 2007, 12:55	#3
headers Senior - BHPian Join Date: May 2006 Location: Greater Chennai Posts: 4,667 Thanked: 559 Times	Kvish..are you suggesting that both the front and rears are connected to the same speaker?? kindly clarify.. Even if you do that you may not get double the power!!
	() Thanks

3rd May 2007, 12:56	#4
hydrashok Senior - BHPian Join Date: Aug 2006 Location: In my Office Posts: 2,528 Thanked: 17 Times View My Garage	@kvish, if you wanted to know whether you can bridge the output of the HU to 2 channels so you can drive the fronts with double power, I'm afraid that will not be possible.
	() Thanks

3rd May 2007, 13:26	#6
esteem_lover Senior - BHPian Join Date: Jul 2006 Location: Madras/Py Posts: 7,556 Thanked: 502 Times View My Garage	Why is it that we can bridge 2 channels from an amp but not from the HU ?
	() Thanks

3rd May 2007, 14:15	#8
kvish BHPian Join Date: Jan 2006 Location: Bangalore Posts: 627 Thanked: 195 Times	I started the topic with this as an assumption: "If we can bridge 2 channels from an amp then it should be possible from HU...." "x 2" ....which was rightly pointed out by esteem_lover... So now its clear, I will stay away... thanks everyone!!
	() Thanks

3rd May 2007, 15:09	#9
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,198 Thanked: 9,301 Times	not all amplifer circuits can be bridged.
	() Thanks

3rd May 2007, 17:42	#11
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	anyway of bridging to run a sub using the rear channel? or is that also impossible?
	() Thanks

3rd May 2007, 19:26	#12
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Mumbai (but wat Posts: 6,997 Thanked: 2,378 Times View My Garage	bridging any amplifier is only possible, if the amplifier is constructed to be bridged. If an amplifier not designed to be bridged, is bridged, then you will blow the output section. You will find that almost all car amplifiers and professional amplifiers are constructed in that way. Most consumer grade amplifiers (home theatre and stereo) are not constructed that way. Neither are 99% of all car stereo head units. This means you cannot combine the channels of your 6850 to deliver more power to your speakers. You will blow up the HU. 100%.
	() Thanks