Which Amp

Discussion in 'OT Technology' started by wyrmblight, Nov 10, 2003.

  1. wyrmblight

    wyrmblight Tá m'árthach foluaineach lán d'eascanna OT Supporter

    Oct 7, 2003
    Likes Received:
    Mag Mell
    I'm looking to put a system back in my car. I haven't bought an amp in many years so I could use some help picking out a good one. I will be pushing two polk 12's, can't remember the model though.

    The first amp is:
    125 watts RMS x 2 at 4 ohms
    250 watts RMS x 2 at 2 ohms
    500 watts RMS x 1 at 4 ohms bridged
    Stereo or bridged mono output
    4-ohm stable in bridged mode
    Tri-Way capable
    Preamp outputs
    PWM MOSFET switching power supply
    Intelligent Surface Mount Technology for cleaner sound and greater reliability
    ThunderEQ Bass Enhancement
    Variable (40-200 Hz) high-pass/low-pass crossovers
    12-5/8"W x 2-¼"H x 9-13/16"D

    Second amp is:
    Rockford Fosgate Punch 501S
    125 watts RMS x 2 at 4 ohms
    250 watts RMS x 2 at 2 ohms
    500 watts RMS x 1 at 4 ohms in bridged mode
    1500 Watts x 1 at 2 ohms in bridged mode
    stereo or bridged mono output
    4-ohm stable in bridged mode
    Tri-Way capable
    requires 8-gauge power and ground leads and a 50-amp fuse — wiring and hardware not included with amplifier
    continuously variable 50-250 Hz high-pass/low-pass (12 dB/octave) crossovers
    MOSFET power supply and output devices
    MEHSA mounting technology increases the heat transfer from the MOSFET output devices to the heat sink, for higher power output, lower operating temperatures, and greater reliability
    TOPAZ — noise-killing differential inputs that eliminate 80% of ground loop noise
    Trans•ana circuitry keeps preamp voltages low and signal paths simple for outstanding audio quality
    NOMAD — advanced protection circuitry for "intelligent" shutdown protection
    wired remote included for fingertip control of Punch Bass (0-18 dB boost at 45 Hz)
    speaker- and preamp-level inputs
    12-1/16"W x 2-3/8"H x 9-7/8"D

    Third amp is:
    Audiobahn A8002T
    Class A/B MOSFET Circuitry
    2 - Channel
    2 Ohms Stable Stereo
    2 x 200 Watts RMS @ 4 Ohms Stereo
    2 x 400 Watts RMS @ 2 Ohms Stereo
    800 x 1 Watts RMS @ 4 Ohms Mono (Bridged)
    Air Intake Cooling Fan
    18 dB Bass Boost
    S/N Ratio: > 100 dB
    Variable Subsonic Filter: 20 Hz - 50 Hz
    Variable High Pass Crossover (18 dB): 50 Hz - 750 Hz
    Variable Low Pass Crossover (18 dB): 50 Hz - 120 Hz
    Frequency Response: 10 Hz - 40 KHz (+/- 1 dB)
    THD: 0.02%
    Cobalt Blue Illumination
    Mirror Chrome Finish
    Dimensions (LxWxH): 11 7/8" x 9 7/8" x 1 7/8"

    Now I've look through the forums and found some people had good experiences with audiobahn others have had bad. Most seem to agree with they are not as powerful ad advertised. I did have good luck with a Rockford I had a while back, although some people here have said they haven't been as good lately. Basically I'm trying to get something good for less then $200 shipped.
  2. Scott P

    Scott P I are lurking through. . .

    Nov 10, 2001
    Likes Received:
    Personally, depend on which polk subs you are using, I would suggest MTX they are specifically underrated on ther capabilities, and they have a factory 3yr warranty. definately worth it in my book
  3. twistid

    twistid Banged By Super Models Moderator

    Jul 15, 2001
    Likes Received:
    The Kansass/Oklahomo Border
    mtx or rockford would be my choice
  4. 04

    04 Guest

  5. boostin-gp

    boostin-gp Guest

    3yr only if professionally installed.

    And most polk subs are 4ohm single voice coil. If that's the case, look for a mono amp and run it at 2 ohms. I'd probably recommend the mtx thunder 501d, or even the thunder421d would probably be enough.

    I'd shy away from the fosgate product though... unless its thier power series...

    Check out this link...

  6. GlocksRock

    GlocksRock Glock > You

    Jun 15, 2003
    Likes Received:
    North Carolina
    I would get the MTX. My two MTX amps have been running strong for several years now, and they still work great.
  7. GSteg

    GSteg Member

    Dec 28, 2001
    Likes Received:
    wats the impedence on the polk audio subs?

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