Ading 6 speakers to a four channel car deck
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=1846
Printed Date: September 16, 2025 at 7:16 AM
Topic: Ading 6 speakers to a four channel car deck
Posted By: The_Observer
Subject: Ading 6 speakers to a four channel car deck
Date Posted: July 10, 2002 at 6:53 PM
I asked earlier about adding 6 speakers to a 4-speaker car deck. I was told that if I ran them parallel, I would present a 2 ohm load which could possibly damage the internal amp in the deck. 1) I was wondering if there are any options avaliable for me to run 6 speakers from a 4 channel deck. 2) Also I wondering why nothing never happened when I ran speakers parallel on my mini system and home stereo. I never ncountered any problems running two speakers from one channel. Anyone know why this works?
Replies:
Posted By: Velocity Motors
Date Posted: July 10, 2002 at 7:17 PM
Home stereo speakers are 8 ohm load and can be run in parallel to make a 4 ohm load. I'm not sure about your previous post, but what 3 sets of speakers are you wanting to install into your system that the deck will power ? ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: The_Observer
Date Posted: July 10, 2002 at 8:17 PM
I already have 5" in the front and 6" in the back both at 4 ohms. My friend has a pair of 8" speakers at 6 ohms. They do not require much power to get sound. The deck runs at 22 watts rms. I wouldn't mind adding the 8"s to the back. I just want to hear how all this would sound in the end.
Posted By: Velocity Motors
Date Posted: July 10, 2002 at 10:20 PM
8 " speakers ?? What brand are they. Normally you don't get 8 " speakers, just sub woofers. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: blazer88
Date Posted: July 10, 2002 at 11:11 PM
You can get an 8" mid bass, but either way you're going to need some kind of amp to run those things  . I just can't see running a head unit to all those without getting some pretty crappy sound or damaging the head unit. L8R
Posted By: The_Observer
Date Posted: July 11, 2002 at 4:38 PM
I know I would need to run some power in them (8"s) but all I really would like to know can I run 6ohm speakers and wire them parallel with 4ohm speakers on my deck. If not are there any suggestions on how to?
Posted By: GlassWolf
Date Posted: July 11, 2002 at 7:09 PM
for one, the home mini-system has MUCH better cooling than the tiny amp in a head-unit in a car
two, most home amps will handle a 4-ohm load (home speakers are 8 ohms for the most part until you get into the thousand-dollar-plus range)
a car deck is designed for a 4 ohm load. period. it doesn't have the components, cooling, or wiring to handle more current for a two or less ohm load.
If you're dead set on doing this anyway, eother a: wire them in series so that the deck sees an 8 ohm load, or b: wire them in parallel and when the deck fries don't be surprised to hear, "I told ya so", or c: get an external amplifier and use that as the power for your speakers. they make mixed mode amps that will run up to 5 or 6 channels, and any good amp will handle down to at least 2 ohms stable. They have the power, wiring, internal guts, and cooling design to accomodate such current.
radios don't.
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-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
Posted By: GlassWolf
Date Posted: July 11, 2002 at 7:11 PM
by the way, also due to the mass of an 8" driver, I don't recommend ever using a deck to power a speaker that large.
6.5" maximum for the deck's internal amp. There just isn't the power there, and more specifically not the clean power needed to make an 8" driver perform properly.
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-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi
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