Adding speakers
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From: Savannah USA
Adding speakers
Why can't you run more the one speaker off the same channel? Not to say that I haven't already done this but the Instructions didn't give a reason why and I would like to know.
Off the head unit I ran both of my 3.5" dash speakers and a 6.5" door speakers off the front channels and my 6"x9" off the rear channels. Head uint puts out 45 watts per channel.
Tailgater_73F100
Savannah, GA
Off the head unit I ran both of my 3.5" dash speakers and a 6.5" door speakers off the front channels and my 6"x9" off the rear channels. Head uint puts out 45 watts per channel.
Tailgater_73F100
Savannah, GA
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From: Utah County, UT
Most of the time they specify not to run multiple speakers on one channel due to current capacity. Most everyone parallels them together reducing the resistance to the head unit. More current, more heat, more the chance you'd burn it up. However, if you put them in in series you'd be okay as far as the Head unit is concerned, but you'll loose out in overall power. Lets face it, everyone wants more POWER.
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Joined: Nov 2003
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From: MASS
Hello
It doesnt have much to do with the power output
it is more an issue of the load created using multiple drivers
THe vast majority of auto type speakers(subs excluded) are
4 0hm speakers-- running 2- 4 ohm speakers in paralell
creates a 2 ohm load on the channel
running 2 - 4 ohm speakers in series will create a 8 ohm load
Most head units are rated to handle loads of 4 - 8 ohms per channel
a seperate power amp is a different story-- most have wider load range
If you properly wire your speakers-- they should work fine
hope this helps
Josh
It doesnt have much to do with the power output
it is more an issue of the load created using multiple drivers
THe vast majority of auto type speakers(subs excluded) are
4 0hm speakers-- running 2- 4 ohm speakers in paralell
creates a 2 ohm load on the channel
running 2 - 4 ohm speakers in series will create a 8 ohm load
Most head units are rated to handle loads of 4 - 8 ohms per channel
a seperate power amp is a different story-- most have wider load range
If you properly wire your speakers-- they should work fine
hope this helps
Josh
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Joined: Jan 2004
Posts: 269
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From: Central Ohio
A head unit has enough problems with power supply issues under recommended use. Running speakers in parallel on a head unit will quickly lead to failure IF the volume level is anything above very medium. You may be able to get by with this if high volume use is never going to happen. Calling the amplifier in a head unit "pitiful" is an understatement, when compared to a dedicated amp. It's all about design. HUs are designed for low to mid volume use, nothing more. Any high volume use over any length of time will cause the amp in a HU to send a nicely clipped waveform to the speakers, which will destroy both the amp and the speaker's voice coils. This will be increased with parallel speakers being run at high volume. And quoting power figures for HUs is a joke. It's a simple case of capabilities and limitations. The manufacturers play it up with numbers like 50x4 or 40x4 watts for HUs, when the actual RMS figures are more like 10-15 watts, which is like I mentioned, intended for low to mid volume use. Anyone who tries to use a HU as their only amplification AND runs parallel speakers AND wants to "crank it up" is asking too much from their equipment. Again, it's all about design limitations.
Last edited by LinearPower; Jul 24, 2005 at 02:07 PM.
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Senior User
Joined: Oct 2001
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From: Savannah USA
Hey thanks for the quick post.
I was just wondering, I don't plan on putting the HU through to much stress now.
( Muhahaha ) But I will take it easy till I get a amp.
Thanks for the detailed information. More then Awia gave me.
Tailgater_73F100
Savannah, GA
I was just wondering, I don't plan on putting the HU through to much stress now.
( Muhahaha ) But I will take it easy till I get a amp.
Thanks for the detailed information. More then Awia gave me.
Tailgater_73F100
Savannah, GA
