PA1100.5 RMS power question.

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roy7777
roy7777 Posts: 1
edited August 2009 in Car Subwoofer Talk
Hi, I have a question about the PA1100.5 RMS power.
According to the Polk Audio website, the power is:
125 watts x 4 (2 ohm) and 600 x 1 (1 ohm) continuous power;
250 x 4 (2 ohm) and 1200 x 1 (1 ohm)

The speakers on my car are:
Front: Polk Audio db6750, 4 Ohms,
Rear: JBL P9633, 4 Ohms,
Subwoofer: RockFord Power T112D4, 2 Ohms,

Can I use the PA1100.5 on my car?
And what will be the RMS power output?
Thanks for any help.
Post edited by roy7777 on
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
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    http://www.meyersound.com/support/papers/amp_power.htm

    For example, if we look at the sine wave voltage at the output terminals of a power amplifier, we will find the RMS voltage to be the peak voltage (Epeak) divided by the square root of 2. If we measure the RMS sine wave current from the amplifier, we will see that, similarly, it is the peak current (Ipeak) divided by the square root of 2.

    Multiplying the two, we get:

    (E peak /(sq root 2)) * (I peak /(sq root 2)) = (E peak * I peak)/2
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  • genroxbro
    genroxbro Posts: 6
    edited July 2009
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    Power Acoustik Fanatik Series amp. Very good condition, 4 channel about 40 watts RMS x 4 4 - 8 ohms, non bridgeable, 20 amp fuse. Full range/low pass crossovers, gain control. Around 2 months old, used on a pair of 6x9s and 6 inch components.

    Asking 400 for it.

    PM me for further details.
    _____________________________________
    Website I designed for payday cash advance company.
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  • MacLeod
    MacLeod Posts: 14,358
    edited July 2009
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    If you want to sell something on here you do it in the Garage Sale and you have to have 25 posts.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • cadenceclipse
    cadenceclipse Posts: 459
    edited July 2009
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    boy does that sound like a rip off..

    i 4get what jvc said but if u look at the amps specificatioons on website it states 80w at 4ohms, so interiors r getting at least 80w a piece(meaning i'd b pretty careful setting those gains) sub it doesn't mention 2 ohms but if 1 ohm is 600, i'm betting 2ohms is about 3 or 400
    Polk MM6501 kick panels, Eclipse cd7200mkll and SW9122 Bomb Box, Cadence A4, A7, CAP5, JL8W3V3
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  • tsroonney
    tsroonney Posts: 1
    edited August 2009
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    roy7777 wrote: »
    Hi, I have a question about the PA1100.5 RMS power.
    According to the Polk Audio website, the power is:
    125 watts x 4 (2 ohm) and 600 x 1 (1 ohm) continuous power;
    250 x 4 (2 ohm) and 1200 x 1 (1 ohm)

    The speakers on my car are:
    Front: Polk Audio db6750, 4 Ohms,
    Rear: JBL P9633, 4 Ohms,
    Subwoofer: RockFord Power T112D4, 2 Ohms,

    Can I use the PA1100.5 on my car?
    And what will be the RMS power output?
    Thanks for any help.



    This is an interesting discussion. thank you for sharing

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