Line Drivers...... to headunits

[Geminidj2000 10+ year member]

if i use a 9 volt line driver .... with there be any diffrence on the other pre amps i use.... lest say i run a head unit with 5v pre outs.... will it sound better then a head unit with 2v preams...... or will it be the same since im using a line driver? and can i expect any in crese in spl... of just sq?

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[GSteg 10+ year member]

line driver is generally used to get rid of noise interference. if your gains are setted correctly right now, you won't gain SPL.

 

[2theMaxx21 10+ year member]

A line driver increases your input voltage. The higher your input voltage, the lower you will be able to set your amp's gain controls. The lower you can keep your gain controls, the cleaner your sound will be. Because amps induce more noise when you crank up the gain.

If you're using a line driver, it doesn't really matter which headunit you use, either way it can't put out any more than 9 volts. But with a headunit that puts out 5 volts, I wouldn't even use a line driver. The more electronics that you have in your signal line (i.e. equalizers, line drivers, etc.) the more noise that will be induced into your signal. Keep it clean and simple. A 5 volt signal is more than high enough to be able to keep your amps gains set low.