No frequency labels on sub's xover... Help!

[timmay8612]

Hopefully this is the last time I need to bug all the experts on here with my simple questions...

My cheapy sub has a crossover knob on it, but its completely unlabeled except for a "normal" setting (whatever that means, ugh). So, what I've done is set my receivers electronic crossover to 80 hz, and set the sub's crossover knob to maximum.

If i'm thinking about this correctly, the amp will only send frequencies below 80 hz to the sub, and leaving the subs crossover as high as possible (its a mystery how high it goes, 100 hz? 120 hz?) will allow it to play whatever the receiver gives it, whereas using the "normal" setting on the sub may be 60 hz for example, causing the sub to reject frequencies from 60 hz - 80 hz sent from the amp.

Does this sound right?

 

[TLS Guy]

Hopefully this is the last time I need to bug all the experts on here with my simple questions...

My cheapy sub has a crossover knob on it, but its completely unlabeled except for a "normal" setting (whatever that means, ugh). So, what I've done is set my receivers electronic crossover to 80 hz, and set the sub's crossover knob to maximum.

If i'm thinking about this correctly, the amp will only send frequencies below 80 hz to the sub, and leaving the subs crossover as high as possible (its a mystery how high it goes, 100 hz? 120 hz?) will allow it to play whatever the receiver gives it, whereas using the "normal" setting on the sub may be 60 hz for example, causing the sub to reject frequencies from 60 hz - 80 hz sent from the amp.

Does this sound right?

Yes it does.

 

[lsiberian]

Hopefully this is the last time I need to bug all the experts on here with my simple questions...

My cheapy sub has a crossover knob on it, but its completely unlabeled except for a "normal" setting (whatever that means, ugh). So, what I've done is set my receivers electronic crossover to 80 hz, and set the sub's crossover knob to maximum.

If i'm thinking about this correctly, the amp will only send frequencies below 80 hz to the sub, and leaving the subs crossover as high as possible (its a mystery how high it goes, 100 hz? 120 hz?) will allow it to play whatever the receiver gives it, whereas using the "normal" setting on the sub may be 60 hz for example, causing the sub to reject frequencies from 60 hz - 80 hz sent from the amp.

Does this sound right?

Just for education purposes the crossover only rolls off the response it doesn't do a hard cutoff. It's usually best to let the receiver handle this anyway so you've done well.

 

[agarwalro]

The great thing is, THAT YOU GOT IT! and therefore made the correct decision.

its a mystery how high it goes, 100 hz? 120 hz

FWIW, if your AVR cross over is at 80Hz, as long as the highest setting on the Sub cross over is >80Hz, it will not make any difference.

 

[timmay8612]

Ok guys, thanks! The live sound knowledge pays off for once...