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Hello, i just installed Infinity reference 6x9 3way loud speakers in my 02 honda civic ex coupe. It required me to remove the torsion bars and drill some new holes, but they sound amazing!!


They are being powered currently by my JVC KD-AHD69 HU they offer 20Watt RMS to each speaker with a max output of 50watt.

These Infinity 9633cf Specifications
Power Handling, RMS: 100 Watts
Power Handling, Peak: 300 Watts
Sensitivity (2.83V @ 1m): 94dB
Frequency Response: 46Hz - 21kHz
Impedance: 2 Ohms
Mounting Depth: 3-1/16 inches

I'm wanting to learn how to prevent these speakers from blowing, they sound amazing being powered just by my HU and i'm able to adjust the equalizer to make them sound even better. I have noticed some interference/distortion only when no sound is being played through them at volume level of 20 to 30. when i lower the volume to 10 there is no distortion. when playing the music they sound amazing and i don't hear any distortion.

Is under powering the speakers a cause of concern?
I read somewhere that i should lower the bass setting on my HU below 5 to insure these don't prematurely blow due to too much bass.

Any info on how to prevent blowing of speaker will be greatly appreciated, thank you!

 
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Yeah distortion often comes contrary to how you think it would. At high volumes your speakers distort because they are trying to play sounds at 40hz and 60hz and don't have the power to do that. So the driver gets out of alignment with the cone and therefore produces distortion.

The distortion you're hearing when nothing is playing and the volume is turned up comes from the internal amp of the headunit. Essentially as you increase the volume the amp has to work harder and therefor sacrifices sound quality. So near max power you normally hear a buzz or hum through the speakers. Although it sounds like 20-30 probably isn't maxing out the HU so maybe it's just from the age of it.

The easiest way would be to turn the bass down or use a High Pass filter if your head unit has that option. Turning the bass down turns the bass down at all frequencies. The High Pass filter will simply prevent certain frequencies from being played. If your HP filter is set to 100hz then nothing below 100hz is passed along to the speaker.

I would say the HP filter is a better way to go because you can still enjoy bass in the music, just not deep bass. Where as turning the bass down will eliminate the bass all together. OR you can get a 2/4 channel amp that will push more power than the 22watts your HU pushes and get more out of the speakers. If the RMS off the speaker is 100watts and your pushing around 20watts then you're not really taking full advantage of the speaker.

 
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...or you could try turning down the volume! Damn kids and their damn noise!

 
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Very true, Thank you for the info. I will look into the HP filter on my HU to see if i have that option. I'm also looking into possibly replacing the front speakers and getting an amp to power the 4 speakers!