the importance of low inductance

[noviygera]

Hi guys,
I'm about to embark on an IB sub project. Looking through different drivers 12, 15, 18" , with Qts of around 0.6 one thing remains unclear to me:

If i will cross the sub at 80Hz, how important is the inductance on the sound quality? Can I use the cheaper "closeout" drivers with higher inductance, say 2.5 or 3.1 or will that be a significant compromise? What will change with going to a lower inductance, say 1.2?

Thank you,

-Herman

[ThomasW]

The higher the inductance the faster the top end rolls off.

But.....

Inductance isn't 'the' single determining T/S parameter, it's just one of several that need consideration when choosing a driver.

[noviygera]

Jan 23, 2010 9:11:29 GMT -7 ThomasW said:

The higher the inductance the faster the top end rolls off.

But.....

Inductance isn't 'the' single determining T/S parameter, it's just one of several that need consideration when choosing a driver.

I understand. However, given there is a choice of very similar drivers with Fs, Qts, Vas xmax, being similar. But they differ in Le, lets say 0.3 mH and 1.5mH and 2.5mH.
I will run them from 30 to 100 Hz, will they sound different or about the same?

-Herman

[mrogowski]

Hi Herman,

Like Tom said, don't get too vacuumed up in the numbers - especially inductance. The numbers you see are taken at a reference frequency of 1kHz which basically means nothing in the sub world.

If you can get a frequency response of the driver you are interested in that is more important than inductance.

Best regards,
Mark

hi tom