Omitting rear speakers from the system

joeyc123 · 02-02-2014, 04:33 PM

I'm wondering if anyone has ever bridged the four channels for just the front 2 components. I'm planning on upgrading with morel hybrids and thought they could use the extra power. My question is, do people notice a large difference without the rear speakers? I was planning on turning the gain nearly off on them anyways once the amp was in...thoughts?

ctuna · 02-02-2014, 11:57 PM

One of the vendors here insists that rear speakers
are a communist plot. I think BMW325i did the bridging for
Morels with good results. And Morels are kind of power hungry.
You can't run any gain on the rear Hi Fi speaker with an amp that has
any power if they are the 2 ohm hi fi speakers.

Quasimodem · 02-03-2014, 01:58 AM

I have a front soundstage only, using the rear signal from the HU to feed my four channel amp (2 channels for left and right 6.5" speaker pods and 2 channels for the door component systems).

I do still use the rear stock speakers fed by the front HU signal so I can hear the warning chimes and cell phone.

For music, I dont think the rear channel is necessary at all. I dont want to hear sound coming from behind me. The subwoofer is there because there is no room in front of me for it and directionality is not so important for low frequencies.

Now, if I frequently had passengers in the rear, is might make more sense to have a rear channel.

bmw325i · 02-03-2014, 02:52 AM

I have the Morels and Jehnerts. The front speakers and underseats are powered by a xd600/6. I used to have the Morels bridged and I was very happy with the sound, but 2 channels went out on the amp.

I plan on replacing it with an Apline pdx f6 which does 150 watts x 4 channels at 2 or 4 ohms. I wouldn't mind having a set of rear speakers.

mathematics · 02-03-2014, 10:22 AM

if you like rear speaker, odds are you voted for obama and would wipe Castro's ass if given the chance.

joeyc123 · 02-03-2014, 12:19 PM

Thanks for the input guys. How would this be done with technics harness? Positive right front in and negative left front only? Would I lose the warning chimes and cell phone usage?

Dannyboy · 02-03-2014, 01:44 PM

Yeah no rears for me either. Running Jehnerts and cdt off of the xd/600/6. I have the Jehnerts bridged. Like a couple of the other guys said you shouldn't need the rears for music. Kills the soundstage IMHO.

woobiedmd · 02-03-2014, 04:37 PM

Hey Mathematics, that was pretty harsh! I think rear speakers are intended for..........those that sit in the rear!

02-02-2014, 04:33 PM	#1
joeyc123 Private 7 Rep 95 Posts Drives: 2007 328i Join Date: Dec 2013 Location: Los Angeles, California iTrader: (0)	Omitting rear speakers from the system I'm wondering if anyone has ever bridged the four channels for just the front 2 components. I'm planning on upgrading with morel hybrids and thought they could use the extra power. My question is, do people notice a large difference without the rear speakers? I was planning on turning the gain nearly off on them anyways once the amp was in...thoughts?
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02-02-2014, 11:57 PM	#2
ctuna Lieutenant General 1920 Rep 13,119 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	One of the vendors here insists One of the vendors here insists that rear speakers are a communist plot. I think BMW325i did the bridging for Morels with good results. And Morels are kind of power hungry. You can't run any gain on the rear Hi Fi speaker with an amp that has any power if they are the 2 ohm hi fi speakers.
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02-03-2014, 01:58 AM	#3
Quasimodem Colonel 149 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	I have a front soundstage only, using the rear signal from the HU to feed my four channel amp (2 channels for left and right 6.5" speaker pods and 2 channels for the door component systems). I do still use the rear stock speakers fed by the front HU signal so I can hear the warning chimes and cell phone. For music, I dont think the rear channel is necessary at all. I dont want to hear sound coming from behind me. The subwoofer is there because there is no room in front of me for it and directionality is not so important for low frequencies. Now, if I frequently had passengers in the rear, is might make more sense to have a rear channel. __________________ Speakers: CDT Audio HD-42 comps--front doors (RAAMmat deadened), CDT ES-06 6.5" woofers--kickpanl Pods, Hertz EBX202R dual 8" ported trunk sub. Amps: Phoenix Gold RSd 500.4 (comps & pods). PG RSd 600.1 (sub). Power & Ground: 4AWG Streetwires w/RockFosgt RFDB1 distro blocks. Input: HU lineout--Kicker KISL RCA adapters--RockFosgt RFIT-6 cables--Audiocontrol Matrix--Monster cables--RSd 500.4--lineout Monstr Cabl to RSd 600.1.
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02-03-2014, 02:52 AM	#4
bmw325i Major General 223 Rep 5,120 Posts Drives: 2006 BMW 325i Join Date: Oct 2010 Location: United States iTrader: (8)	I have the Morels and Jehnerts. The front speakers and underseats are powered by a xd600/6. I used to have the Morels bridged and I was very happy with the sound, but 2 channels went out on the amp. I plan on replacing it with an Apline pdx f6 which does 150 watts x 4 channels at 2 or 4 ohms. I wouldn't mind having a set of rear speakers.
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02-03-2014, 10:22 AM	#5
mathematics Captain 69 Rep 994 Posts Drives: 08 328i e93 alpine white Join Date: May 2009 Location: Queens, NY iTrader: (0)	if you like rear speaker, odds are you voted for obama and would wipe Castro's ass if given the chance. __________________ iPhone 6 Plus (iTunes library/iTunes radio/Waze, etc) to Airport Express via AirPlay. Toslink out of Airport Express to Helix P-Six DSP. PHD AF 1.C tweeters, PHD FB 4.1 midranges. Jehnert Door Cards and mid-bass'.
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02-03-2014, 12:19 PM	#6
joeyc123 Private 7 Rep 95 Posts Drives: 2007 328i Join Date: Dec 2013 Location: Los Angeles, California iTrader: (0)	Thanks for the input guys. How would this be done with technics harness? Positive right front in and negative left front only? Would I lose the warning chimes and cell phone usage?
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02-03-2014, 01:44 PM	#7
Dannyboy Lieutenant 37 Rep 401 Posts Drives: 2006 E90 Join Date: Dec 2012 Location: New Jersey iTrader: (0)	Yeah no rears for me either. Running Jehnerts and cdt off of the xd/600/6. I have the Jehnerts bridged. Like a couple of the other guys said you shouldn't need the rears for music. Kills the soundstage IMHO.
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02-03-2014, 04:37 PM	#8
woobiedmd New Member 0 Rep 21 Posts Drives: 2010 335i E-90 MHD stage I Join Date: Feb 2014 Location: Doylestown,PA iTrader: (0)	Hey Mathematics, that was pretty harsh! I think rear speakers are intended for..........those that sit in the rear!
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