Stock stereo questions...

[blaze5012]

Ive got a couple questions on my stock stereo. I have a Gravity Games 2006 24SSV, so I have the 4 speakers on the tower and a sub plus the 6 cabin speakers. The only thing different is they have changed out the amp that powers the sub and tower speakers and the sub, it is now an arc audio KS 300.4.

Right now the 300.4 has 90 watts x4 channels. Two channels are bridged to go to the sub and the other two channels power the tower speakers. For some reason the gain on the sub and speakers are set almost at 0. The gain for the sub is set to about 2 out of 10 and the speakers are set at about 3 of 10. Is there some reason they would set them so low from the factory?

Do you now how they wire the tower speaker to the tower, because there are only two inputs to the tower that has 4 speakers. Are they wired in series?? Im thinking it is in series because each stock kenwood speaker takes 45 watts RMS max and the amp delivers 90 out of each channel, so two speakers per channel. The only thing is wiring in series raises the load which should lower the output from the amp correct?

Im thinking I can turn the gain up on both to over half with no damage to the speakers. The sub is rated at 350 RMS and thats what the amp delivers on the two bridged channels. Any help from you guys would be great.
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[blaze5012]

anyone know?
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[87SunSportMikeyD]

Hey they are probably wired in parallel. I was told that is more common. Red to red on one speaker, then black to black on the other speaker, then a wire connecting the remaining two terminals together.

Go ahead and turn the gain up - do it while playing the stereo, and make SMALL adjustments, then go back to the head unit and turn it up and down to make sure you have the range of volume just right.

[blaze5012]

The only problem i see with them beign wired in parallel is that lowers the resistance. With two speakers(each at 4 ohms) in parallel that lowers the total resistance to 2 ohms on each tower channel. This means each channel will be getting way more than 90 watts, this amp is rated at 175 watts per channel at 2 ohms. If both speakers are rated at 45 watts, wouldnt more than 45 watts be going into each, so if i turn the gain up too much do i risk blowing the speakers?
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[87SunSportMikeyD]

You may want to try posting the question on wakeboarder.com. Sorry for the bum steer.

[blaze5012]

just did, yeah this is a rather specific question on a smaller forum
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[jonyb]

The only problem i see with them beign wired in parallel is that lowers the resistance. With two speakers(each at 4 ohms) in parallel that lowers the total resistance to 2 ohms on each tower channel. This means each channel will be getting way more than 90 watts, this amp is rated at 175 watts per channel at 2 ohms. If both speakers are rated at 45 watts, wouldnt more than 45 watts be going into each, so if i turn the gain up too much do i risk blowing the speakers?

45W RMS, or max power?

The more power you put on a speaker, the better off the speaker will be. Lower power and screwed up eq curves cause distortion. That's what will damage a speaker, so to answer you're question, more power will not "blow" the speaker, unless it's distorting.

[blaze5012]

45W RMS, or max power?

The more power you put on a speaker, the better off the speaker will be. Lower power and screwed up eq curves cause distortion. That's what will damage a speaker, so to answer you're question, more power will not "blow" the speaker, unless it's distorting.

Yeah i vaguely have an understand that it is a bad idea to underpower speakers. But the speakers are rated at 45 RMS. And at 2 ohms the amp will be pumping way more than that into each speaker. So do you not think I run much of a risk pushing the gain up?
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[jonyb]

Read previous statement.

Amps don't blow speakers, people do.

[blaze5012]

ok well to the fact that people blow speakers, shouldnt there be a way to set an amp that the speakers will be able to handle all settings from the stereo head without failing?
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[jonyb]

You can idiot-proof a stereo, but it's not always effective. You should know when the speakers are being overpowered or overplayed. You'll be able to hear crackling or distortion, that means TURN IT DOWN.

[SZEH]

45W RMS, or max power?

The more power you put on a speaker, the better off the speaker will be. Lower power and screwed up eq curves cause distortion. That's what will damage a speaker, so to answer you're question, more power will not "blow" the speaker, unless it's distorting.

jonyb is right...it's better to have too much power than not enough going to your speakers. Too little power and too much volume is a death sentence. eq curves such as pushing the bass is also a killer. I run mine pretty much flat and let the speakers handle the highs, mids and bass the way they should.

I've had good luck posting questions like this on www.carstereo.com. You might try posting there...these people live for stereo stuff.

Scott