4 speakers one amp.
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Senior User
Joined: Nov 2006
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From: SFV, CALIFORNIA
4 speakers one amp.
I'll be instaling a set of component speaker component's in all 4 doors. I'm trying to figure out the best set up!
1) run all 4 speakers off one Amp.
2) amp only to the front and run rears off HU.
3) All 4 off of HU .
thanks in advance!!
by the way the componants are Infinity Reference 6820cs
1) run all 4 speakers off one Amp.
2) amp only to the front and run rears off HU.
3) All 4 off of HU .
thanks in advance!!
by the way the componants are Infinity Reference 6820cs
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I would recommend using an amp for all 4 speakers, especially is you are using components. The primary killer of speakers is underpowering. A typical head unit puts out anywhere from 15-22 watts of power RMS (realistic power) whereas a speaker may require anywhere from 50-100 watts RMS. So if you amp the fronts and run the rears of deck power you will be shortening the life span of the back speakers. The reason is you will be able to turn up the radio louder and get better clarity out of the fronts, but you won't neccesarily here all the distortion from the rear. Underpowering a speaker is like running a motor with no oil. The speaker has to work harder to create the noise you want, all the while heating up and then the voicecoil burns up. And that's where the burnt electronics smell comes from when you blow a speaker.
So that's my 2 cents.
So that's my 2 cents.
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What brand 6x9's are they? Are you running an amp on them now or are they running of deck power? I'd much rather use an amp that has a higher power rating and just tune the gain down then underpower the speaker. You can always back off on the amp but you can't make the radio put of more power.
Junior User
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pioneer 5 way 6x9's, they are on the h/u now. but they sounded AMAZING on my 300 watt amp, but i cant run them on the amp because i only have a 1 way amp to my 10" sub.
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No. Run the front set off an amp and the rear off the HU. Amping the rear will kill your soundstage.
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That's what gains are for. You can always just set the rear gain lower than the front and it gives you more far more adjustability over using the head unit. Running the rears of the deck while require you to use the fader, whereas using an amp with a front and rear gain will let you tune your system exactly to your liking. In my opinion using an amp allows for greater flexibility in fine tuning an audio system. But hey... 2 channel amps tend to be cheaper.
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Originally Posted by matt1982
That's what gains are for. You can always just set the rear gain lower than the front and it gives you more far more adjustability over using the head unit. Running the rears of the deck while require you to use the fader, whereas using an amp with a front and rear gain will let you tune your system exactly to your liking. In my opinion using an amp allows for greater flexibility in fine tuning an audio system. But hey... 2 channel amps tend to be cheaper.
Dude, gains are not volume controls. I fail to see why you would have to use the fader control too. Once you have it set up the way you want, it is done. No need to keep on changing the settings. If it were me, I would not even run the rear speakers. It kill the soundstage. But, hell, each to their own.
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From: SFV, CALIFORNIA
Originally Posted by Beerstalker
Part numbers for the Head Unit and Amp?
i have 2 of my "old school" i wanted to use
ppi 2150
ppi 225
both are 2 channel
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Dude... sweet. I fail to see why you missed my point. You use the gains to create your soundstage... turning the rear gain down compared to the front will bring the fronts out more, in addition, some 4 channel amps have a bass EQ adjustment on the rear channels allowing you to lower the rear, while still retaining a good mid bass response. You still have nice bright highs in the front, but you don't lose out on the mid bass from the rear. And as far as using the gains as volume controls, thats by no means what I was suggesting. When we install a system we tune the system once, and aside from any component changes...it stays that way.. But using the gains when tuning allows you to dial in your system initially for better sound all around... but anyways, sounds like he is going with a channel anyhow. One for the fronts... one for a sub maybe?
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I ran a Kenwood DDX-8019 head unit. Two Rockford P8004s (4 x 100 at 4-ohms, 4 x 200 wats at 2-ohms). I run 8 speakers (2 front doors, 2 rear doors, two third row, and 2 in the rear barn doors) off of the Rockford amps at a 2-ohm impedence. The front 4 "door" speakers are Infinity Perfect 6.1's. The third row is a set Infinty 2-ways. The barn doors are JL Audio 6x9 2-ways. The other P8004 I run with a Left and Right Bridged so I get 400 watts to each of my 12" Rockford Punch Dual Voice Coil Subwoofers.
Ray
Ray