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Amp question

 

New member
Username: Poorbiker

Post Number: 1
Registered: May-04
Don't know much about amps but I need someone to help me out. I have a Harley with a sony radio and polk audio 5 1/4" speakers. I would like to add a amp to get a little more noise. The size of amp will need to be small to fit. The question I have is does the amp wattage have to be bigger than the radio wattage to be effective? When I turn up the radio just a little over half way the speakers start to restort. Do I need a amp or better speakers? Any info would be helpful.
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 3057
Registered: Dec-03
put bass-blockers on the speakers (high pass filters set to about 150Hz)
see if that helps first.
then consider going to an amp rated for about 50 watts per channel.
remember the head unit really only puts out about 15 watts per channel RMS, or continuous.
thos "50w x 4" ratings are BS
 

Bronze Member
Username: Panache

Brenham, TX US

Post Number: 83
Registered: Apr-04
Dayum Wolf, and all this time I thought my Alpine 60w x 4 was accurate. :'(
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 3062
Registered: Dec-03
that's a max rating
the alpine Vdrive amps in the head units are 27 watts RMS per channel
 

New member
Username: Kober

Post Number: 4
Registered: May-04
I got a question, If a Deck has only like 15w a channel, how come you can get your speakers to distort?
 

Bronze Member
Username: Cainer

Camberley, Surrey England

Post Number: 18
Registered: May-04
because the signal is being strained so much from the HU it produces a s'hit input to the speakers
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 3138
Registered: Dec-03
the amplifier in the headunit clips, producing distortion in the speakers.
pretty much every head unit reaches distortion around 2/3 to 3/4 of full volume
usually around "21" if the volume goes to "35" or so
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