bridge

grizlee
grizlee Posts: 16
edited January 2005 in Car Audio & Electronics
i bridged my amp for 2 12" subs and i only get sound out of one. any advice?
Post edited by grizlee on
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  • spwuinmk67
    spwuinmk67 Posts: 797
    edited January 2005
    How are the subs wired to the amp? Need more info...
    1993 Ford Ranger super cab:
    Pioneer Premier DEH-P880PRS
    MB Quart QSD216
    in need of amps and subs

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  • grizlee
    grizlee Posts: 16
    edited January 2005
    well i figured it out but, now the lights dim when the bass hits. the amp is only 150 watts. the subs are 2 12" single coil 4 ohm. with the bridge it is a 2 ohm load.
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  • exalted512
    exalted512 Posts: 10,735
    edited January 2005
    i highly doubt your amp is 2 ohm stable in bridged mode. only a hand few are. i think your best bet is to hook one up to each channel. it might not be as loud but you wont blow your amp.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • grizlee
    grizlee Posts: 16
    edited January 2005
    it sounds really distorted when each channel is hooked up
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  • grizlee
    grizlee Posts: 16
    edited January 2005
    i actually just read the manual and it says not to go below 2 ohm bridged mono. but theres a way to hook it up as 8 ohm bridged mono. im going to lose a lot of power huh?
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  • spwuinmk67
    spwuinmk67 Posts: 797
    edited January 2005
    More resitance generally means less power
    1993 Ford Ranger super cab:
    Pioneer Premier DEH-P880PRS
    MB Quart QSD216
    in need of amps and subs

    Home:
    52" Sharp Aquos
    PolkAudio Monitor 10's
    Harmon Kardon HK3375
    Xbox 360
    PolkAudio XM tuner

    Owner and co-designer of www.basicholdem.com
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  • MacLeod
    MacLeod Posts: 14,358
    edited January 2005
    Yes, an 8 ohm load will put out less power.

    Im suprised that amp is rated at 2 ohm mono, virtually no amps are. What kind of amp is it?

    Either way, 150 watt amp shouldnt be dimming your lights. If it is youve got major charging system issues.

    You may also think about upgrading your amp as 150 to 2 subs is way underpowering them.
    polkaudio sound quality competitor since 2005
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    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • grizlee
    grizlee Posts: 16
    edited January 2005
    its a rockford amp, huge difference in the 8ohm but the lights dont dim any more.
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  • grizlee
    grizlee Posts: 16
    edited January 2005
    would i be able to do a parallel mono bridge?
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  • exalted512
    exalted512 Posts: 10,735
    edited January 2005
    if its a rockford amp theres no way its 2 ohm stable in bridged mode. it will only be 2 ohm stable in stereo. the reason your lights are dimming is probably because your putting too big a load on the amp.
    i dont know what you mean by parallel mono bridge
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Joelsbass
    Joelsbass Posts: 637
    edited January 2005
    i'll wager that the reason your lights are dimming is cause you drive an import with an 80amp alternator.... what do you drive cause that could show some potential charging issues...
    MacLeod: I guess youre lucky Polk has such lax hiring standards.

    Josh: Damn skippy!
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  • grizlee
    grizlee Posts: 16
    edited January 2005
    its a 95 chevy monte carlo...
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