Help! Subwoofers Cutting out?

Discussion in 'Car Subwoofers' started by connormita, Jun 22, 2011.

  1. connormita

    connormita New Member

    Hey guys, i just bought myself a sounds system, about 10min in to the car ride i hear the bass fade out……..then back in……then out completely for like 1min ….. and then back in.I checked out my amp, and boy is it getting hot.I am properly grounded, thats not the issue, i would think that it is the amp? or i am overloading something? i am going from (2)4ohmsplit to a 2Ohm load>Amp. My set up goes as followed…

    • Subwoofer Features: (2) Kicker Comp 12
    • Two 12" Single 4 Ohm Competition (Comp) Series Subwoofers
    • Power Handling:
    ◦ Peak: 600 watts total / 300 watts each
    ◦ RMS: 300 watts total / 150 watts each
    • Impedance: Single 4 ohm
    • Injection molded SoloKon cone
    • Optimized Polyfoam Ribbed Surround
    • Extremely rigid cone, along with 360 degree back bracing eliminates distortion
    • Double stitched surround for enhanced durability
    • Tinsel leads woven into the spider with Kicker's Spiralead technology
    • Single high-temperature voice coil
    • 45oz. Magnet structure
    • Frequency response: 27-500 Hz
    • Sensitivity: 88.3 dB
    • Mounting depth: 5-7/8"
    • Authorized Internet Dealer
    • 1-year Manufacturer's warranty

    Enclosure Features:
    • Dual 12" Sealed Subwoofer Enclosure
    • Made from durable 3/4" Medium Density Fiberboard (MDF)
    • Covered in black carpet
    • Absolute logo places on the front of the enclosure
    • Two binding post terminals on the back of the enclosure
    • Square box enclosure universal for most vehicles
    • Mounting depth: 13-3/8"
    • Cutout diameter: 11-1/8"
    • Recessed front panel does not allow subwoofers trim ring to extend beyond 7/8" mounting diameter
    • Box volume: 2.8 total cubic feet (1.4 cubic feet per chamber)
    • Dimensions: 15-3/8"D x 28-1/2"W x 14-1/2"H
    • Authorized Internet Dealer

    Amplifier Features: Kenwood KAC-8105D
    • Class D Monoblock Car Amplifier
    • RMS Power Rating:
    ◦ 4 ohms: 300 watts x 1 chan.
    ◦ 2 ohms: 500 watts x 1 chan.
    • Max power output: 1000 watts x 1 chan.
    • MOSFET power supply
    • LED power indicator
    • Tuned Bass EQ (0-18 dB bass boost at 40 Hz)
    • Speaker-level inputs with signal sensing for automatic turn-on
    • Preamp RCA outputs
    • Short circuit, DC offset, overload, and thermal protection circuitry
    • Aluminum die cast heat sink
    • Speaker impedance: 2-8 ohm
    • Gold-plated RCA level inputs
    • Gold-plated screw terminals
    • Input sensitivity: 0.2-5 Volts
    • Variable low-pass filter (50-200 Hz, 24 dB/octave)
    • Subsonic filter (15/25 Hz)
    • CEA-2006 compliant amplifier
    • Frequency response: 10-200 Hz
    • Dimensions: 11"L x 2-5/16"H x 9-3/8"D
    • 4-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
    • 1-year Sonic Electronix warranty

    Subwoofer Wiring:parallel (2) 4Ohm > 2Ohm Load Mono Block
    http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/2SVC_4-ohm_mono.jpg
     
  2. kpetree

    kpetree New Member

    I think i might know the problem. I guarantee that you wired the subs wrong. either look up how to correctly wire your subs down to 2 ohm or re-wire them back to 4ohms. right now you're are frying your voice coil overs. attached is a ling on how to properly wire you subs, good luck! http://www.rockfordfosgate.com/rftech/woofer_wizard.asp
     
  3. pedro quiroga

    pedro quiroga Well-Known Member

    its very hard to mess up wiring single voice coil subs.. even if they are wired to 8 ohms the amp would not get hot. it would be running at half its rated output.. hence coler...

    unless the gains are cranked and then the signal would be clipping causing said heat.

    connermita.. how large is your power wire? IS your gain set to max?

    do you have the bass boost on?
     
  4. Fbmowner

    Fbmowner Full Member

    Im with pedro here, i have a kenwood 4ch on my mids and highs. If i push it to hard it fades out and or cuts out for a short time and will come back up distorted for a second or two. Since ive cut the gain back and set it properly to match the voltage i havent had this problem, but again it could also be a faulty wire or to thin of power wire. Try turning the gain down and seeing if that helps. If it stops when you turn the gain down chances are thats your problem.