Hmmm

[miker 5,000+ posts]

Speakers start to crackle after 25 on FM. Can go a little louder while listening through the AUX input.

Is this because the amp on the deck is not powerful enough to power it past that level?

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[DejaWiz 5,000+ posts]

A radio signal isn't the best source signal, so it's going to sound a lot worse at higher volumes than a more reliable source, like the AUX in.

 

[miker 5,000+ posts]

A radio signal isn't the best source signal, so it's going to sound a lot worse at higher volumes than a more reliable source, like the AUX in.

But still. 30 out of 40? Is that not kinda low? Or should I NOT be able to turn it all the way up or close to.

 

[Etac 10+ year member]

most HU's go up to 80% before they start clipping but it still can depend on the speaker itself and how much power you put to it... too much/too little

 

[DejaWiz 5,000+ posts]

most HU's go up to 80% before they start clipping but it still can depend on the speaker itself and how much power you put to it... too much/too little

QFT. Most amplifier manufacturers recommend not exceeding 75% max volume when setting gains, to make sure the point of distortion is not met or exceeded.

And, 30 / 40 = 0.75, so 75%