HU + AMP = what RMS?

da5176
da5176 Posts: 42
edited June 2006 in Car Audio & Electronics
I'm wanting to get an amp for my speakers and want to maximize the RMS wattage to the speakers. My HU puts out 22 RMS per channel. When adding an amp (say 80 watts per channel RMS) by way of the pre-out from the HU is the total RMS the HU + the amp for 102 RMS, or is the HU's internal amp then bypassed and only the power from the amp powering the speakers at 80 RMS? I don't want to put too much power into my speakers but as much as they can handle. Thanks.
NOT MUCH, BUT IT'S ALL MINE!

SONY 60" SXRD (HDTV)
Explorer 8300HD (HD-DVR CABLE BOX)
Toshiba SD-3750 (DVD PLAYER)
Onkyo TX-SR702 (RECEIVER)
Polk Monitor 60 (FRONTS)
Polk CS2 (CENTER)
Polk Monitor 30 (SIDE SURROUNDS)
Polk Monitor 30 (REAR SURROUNDS)
Mirage Omni S-12 (SUBWOOFER)
Tripplite HT 1000UPS (POWER PROTECTION)
Omnimount (CENTER CHANNEL SHELF)
B-Tech BT34 (SURROUND SPEAKER MOUNTS)
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Comments

  • exalted512
    exalted512 Posts: 10,735
    edited June 2006
    when you put an amp in, it bypasses the radio, so youll be getting only the power from the amp, not a combination of both.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • cam5860
    cam5860 Posts: 632
    edited June 2006
    The headunit has a built in amp that is used when you connect the speaker wires coming from the headunit.

    When you use preout's from the headunit to run to your amp all you get is the audio signal feed to the amp.

    The voltage of the signal is not RMS watts or power. It's voltage to push a stronger audio signal to the amp for cleaner sound.
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