One amp or two?

kenstewart
kenstewart Posts: 139
edited March 2006 in Car Audio & Electronics
I'm sure there's millions of related posts on this, but I'm little anxious at the moment (read, going to bed and want to pick out some amps). For my ID8 D2 v.3 sub (up to 300 rms) and my ID CTX6s (70 rms) ... will it be ok to go with a single multi-channel amp (quality one of course)? I know most will say to go w/separate amp for sub and sep one for speaks ... what do you guys think?
Eclipse CD8445 HU
Image Dynamics CXS54 Chameleons component setup
Two 8" Image Dynamics ID8D2v.3 subs
MTX MXA6001 amp for subs
MTX MXA3002 2-channel amp for comps
Accumat and Peel-n-Seal
Stinger and Knukoncpetz wiring
Post edited by kenstewart on
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Comments

  • neomagus00
    neomagus00 Posts: 3,899
    edited March 2006
    for your purposes, running a 4-channel as 2x70 and 1x280 (bridged) would be ideal... if you can find a 70-90 WRMS x 4 Ch. @ 4 Ohms amp, that should be perfect
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited March 2006
    I think a multichannel amp would be a great way to go. The thing is to get one that has sufficient output. Kicker had a three channel amp in 05, not sure if they continued it this year. 70 watts x2 or so and 200 or 400 watts to the sub (depending on if you had it at 2 or 4 ohms). You could also just get a four channel one and bridge two of the channels.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited March 2006
    I could recommend a great amp for that application ............. :D
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • kenstewart
    kenstewart Posts: 139
    edited March 2006
    Forgot to say, I still plan on keeping my rear speaks but probably run them off the HU vice amp since I don't plan on having them on very often (faded when no rear passengers). So, sounds like you guys are saying it is ok to run sub and two speaks off a decent multichannel then. The 4-channel is what I was thinking. I've followed you guys off and on (Macleod, 1996blackmax, neo, cody, etc.) and you guys have given lots of good advice so what good multichannel should I go for that won't cost an arm and a leg (meaning, $250 or less)? Eclipse, Hifonics, Pioneer, MTX, Profile (budget I know but supposedly good line), etc.????
    Eclipse CD8445 HU
    Image Dynamics CXS54 Chameleons component setup
    Two 8" Image Dynamics ID8D2v.3 subs
    MTX MXA6001 amp for subs
    MTX MXA3002 2-channel amp for comps
    Accumat and Peel-n-Seal
    Stinger and Knukoncpetz wiring
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited March 2006
    I would probably go with either an Eclipse or MTX amplifier.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • kenstewart
    kenstewart Posts: 139
    edited March 2006
    Since I really don't understand well enough the bridging and resulting wattage/ohm factors ... how does this amp look for my purposes?

    Eclipse A4000 ... $240

    http://www.eclipse-web.com.au/amp/ea4000.html
    Eclipse CD8445 HU
    Image Dynamics CXS54 Chameleons component setup
    Two 8" Image Dynamics ID8D2v.3 subs
    MTX MXA6001 amp for subs
    MTX MXA3002 2-channel amp for comps
    Accumat and Peel-n-Seal
    Stinger and Knukoncpetz wiring
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  • neomagus00
    neomagus00 Posts: 3,899
    edited March 2006
    unfortunately, no... for whatever reason, that amp isn't 2-ohm stable in normal operation, so it won't suffice for bridging...

    check out www.acaraudio.com, www.cardomain.com, and www.onlinecarstereo.com for quick browsing of lots of options
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • CrBoy
    CrBoy Posts: 580
    edited March 2006
    ^ remember that kenstewart has a 2-Ohm DVC sub, so he can do 1 ohm or 4 ohms only...
    Check his thread about wiring HERE
    <|>
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  • neomagus00
    neomagus00 Posts: 3,899
    edited March 2006
    CrBoy wrote:
    ^ remember that kenstewart has a 2-Ohm DVC sub, so he can do 1 ohm or 4 ohms only...
    Check his thread about wiring HERE
    right... he'd wire the coils in series, loading the amp to 4 ohms... however, for an amp to be stable at 4 ohms bridged, each channel must be stable to 2 ohms on its own... that's what i meant, sorry for any confusion...
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • CrBoy
    CrBoy Posts: 580
    edited March 2006
    neomagus00 wrote:
    right... he'd wire the coils in series, loading the amp to 4 ohms... however, for an amp to be stable at 4 ohms bridged, each channel must be stable to 2 ohms on its own... that's what i meant, sorry for any confusion...

    gotcha!!! No hard feelings, right? :confused::D:D
    <|>
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  • neomagus00
    neomagus00 Posts: 3,899
    edited March 2006
    CrBoy wrote:
    gotcha!!! No hard feelings, rights? :confused::D:D
    'course not... i'm not always right... just usually... :D
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • 98thumpin
    98thumpin Posts: 649
    edited March 2006
    you dont need two amps as long as the one you have will handle the speakers and the sub.
    John Tyler Birch

    home audio system:

    Denon avr-1907
    Sony dvd/cd changer 5 disc
    nakamichi BX-100 tape deck
    2 Polk Audio monitor 70's
    Velodyne DPS-12 subwoofer
    RCA TV
    NAK 600 tape deck
    Monster power line conditioning power center
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  • kenstewart
    kenstewart Posts: 139
    edited March 2006
    Already ordered two MTXs (actually ordered three but gonna sell one of them). One MTX MXA6001 which I'll run two Image Dynamics 8" subs, then one 4-channel (MTX Thunder 684) to run my speaks (Image Dynamics CTX6s). Was looking at a true 3-channel or 5-channel but it got too confusing and hard to find one to match my setup ... not that it couldn't be done, it's I'm just not knowledgeable enough to weed through all the options.
    Eclipse CD8445 HU
    Image Dynamics CXS54 Chameleons component setup
    Two 8" Image Dynamics ID8D2v.3 subs
    MTX MXA6001 amp for subs
    MTX MXA3002 2-channel amp for comps
    Accumat and Peel-n-Seal
    Stinger and Knukoncpetz wiring
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  • 98thumpin
    98thumpin Posts: 649
    edited March 2006
    oh gotcha whatever fancies your boat. man hope u get i figured out
    John Tyler Birch

    home audio system:

    Denon avr-1907
    Sony dvd/cd changer 5 disc
    nakamichi BX-100 tape deck
    2 Polk Audio monitor 70's
    Velodyne DPS-12 subwoofer
    RCA TV
    NAK 600 tape deck
    Monster power line conditioning power center
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