is there a bad position in box to fit crossover ?

[busterno1]

Is it bad to put directly opposite a driver or port . Can it be close to them ? Thanks

[stokessd]

I suppose in front of the tweeter is right out too...


Sheldon

[phibes]

I've found in the last 4 or 5 enclosures I've built that it is just as easy to build separate xover enclosures and have them on the floor directly behind the speaker enclosure. It always avoids major surgery if you ever need to make repairs or some alteration to the xover!
Cheers

[thomas997]

I guess putting a layer of polyfill over the crossover would help any reflections the board is making..

That is if it makes any at all.

[sreten]

For unshielded drivers, and if the crossover has cored inductors
the best position is directly behind the bass unit magnet as far
away as possible i.e. on the back.

This point has the minimum stray magnetic field in a box speaker.
For floorstanders probably anywhere low down is a better place.

sreten.

[Royston Vasey]

If you are going to have the crossover outside the cabinet, is it not better to have it as close as possible to the amp?

RV

[Guss]

Originally posted by Royston Vasey
If you are going to have the crossover outside the cabinet, is it not better to have it as close as possible to the amp?

RV

No, the length of wire would then become an impedance problem for the amplifier. It is better to have a single wire that splits into different signals at the very end of the line, in the speaker.

[Svante]

Originally posted by Guss



No, the length of wire would then become an impedance problem for the amplifier. It is better to have a single wire that splits into different signals at the very end of the line, in the speaker.

At the risk of turning this into one of those cable threads: Why?

[phibes]

With the speakers I've built using an external xover enclosure I've always used one single input, then deliver the signal to the respective driver [be it two way or three] direct from the output side of the xover enclosure. These wires are never much longer than a metre which puts the xover enclosure immediately behind the speaker enclosure. Xover is always well away from any amplification.
Cheers,
Keith

[Guss]

Originally posted by Svante

At the risk of turning this into one of those cable threads: Why?

Optimally a cable would be transparent. But it is not, and cables represent a resistive load for an amp ( capacitance and inductance as well ). Having long lengths of wire may increase those factors, regardless of their gauge.

Say your speaker are 10 ft away from your amp. You need 10 ft of wire plus twice the length after the crossover. If you have your crossover right after your amp you need twice 10 ft. The amp now sees 20ft of resistive wire ( which is likely to deteriorate the sound too ). This resistance between your speaker might end up changing the Q of your speaker. I believe it's better to have one length of wire and the shortess one possible.