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Junior Member
Joined: Jan 2001
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From: IL
question
i was just wondering if you power subwoofers with the car stereo receiver, isn't there a good chance that the receiver amp could overheat? that's what i was told a long time ago. i know a guy that's powering his subs that way and he says "i don't ever have any problems with it" he has a kenwood receiver with 2 15" kenwood subs.
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From: Where the chicks absolutely LOVE the V-8 rumble!
Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
You could, but the power would not be sufficient enough for the good, loud sound that a separate amp could give you.
------------------
92 Camaro RS, LO3, 5-spd, T-tops
Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi
------------------
92 Camaro RS, LO3, 5-spd, T-tops
Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi
Member
Joined: Apr 2001
Posts: 154
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From: Austin, Texas
The resistance value, or OHM load, will determine how hot the receiver gets.
Most car decks can handle a 4 Ohm load to the internal amplifiers.
So, If you hook up a 4 OHM sub to each channel, you will not overheat the deck.
If you hooked up a DVC sub to create a 2 OHM load to one channel, then yea, it will overheat and probably fail in the long run.
I don't think anyone would recommend running a sub off of a deck's internal amps. Most decks push a max of anywhere from 10 - 15 watts of CLEAN power.
You have to watch out for the stereo manufactures, they will rate a deck's amps at 50 watts, but if you look at the distortion factor, it's probably more like 15 watts. Anymore then that, and the THD levels get way up there. This not only sounds horrible, but can damage speakers.
Thomas.
Most car decks can handle a 4 Ohm load to the internal amplifiers.
So, If you hook up a 4 OHM sub to each channel, you will not overheat the deck.
If you hooked up a DVC sub to create a 2 OHM load to one channel, then yea, it will overheat and probably fail in the long run.
I don't think anyone would recommend running a sub off of a deck's internal amps. Most decks push a max of anywhere from 10 - 15 watts of CLEAN power.
You have to watch out for the stereo manufactures, they will rate a deck's amps at 50 watts, but if you look at the distortion factor, it's probably more like 15 watts. Anymore then that, and the THD levels get way up there. This not only sounds horrible, but can damage speakers.
Thomas.
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