Loud Speaker Crossovers and power amp placement

JRKO · 20th June 2004, 06:51 PM

1)Is it better to have the crossover outside the cabinet?
Not just for being able to get at it, but for the curcuit itself etc.

2)Is it best to have a short run of interconnect and a long run of cable? Or a long run of interconnect and a short run of cable?

BillFitzmaurice · 20th June 2004, 08:12 PM

The advantage to having the crossover external to the cabinet would be the additional distance of the inductors from the drivers, which would reduce cross-talk.

Keep the interconnects as short as possible, the speaker cables long. Interconnects are subject to noise pickup, which is then amplified. Any noise picked up on the speaker cables will be less audible and won't be amplified.

JRKO · 20th June 2004, 08:22 PM

would mounting the crossover on the back of the cabinet make any difference? Or would placement on the floor or some other surface be best?

BillFitzmaurice · 20th June 2004, 11:37 PM

For the sake of convenience the cabinet back is best, located as far as possible from the drivers. Another option is below the box in a separate sub-enclosure, especially if it's a floorstander.

JRKO · 29th July 2004, 04:46 PM

How about if my pre has a balanced output? could I then mount the amps inside and not suffer ill effects?

454Casull · 29th July 2004, 04:56 PM

Quote:

Originally posted by BillFitzmaurice
The advantage to having the crossover external to the cabinet would be the additional distance of the inductors from the drivers, which would reduce cross-talk.

Keep the interconnects as short as possible, the speaker cables long. Interconnects are subject to noise pickup, which is then amplified. Any noise picked up on the speaker cables will be less audible and won't be amplified.

Unless - heaven forbid - you use optical interconnects. :O

JRKO · 29th July 2004, 04:59 PM

being a newbi I sometimes have trouble telling an 'in' joke from a valid comment.

I have optical outs I could use. Any good?

jleaman · 29th July 2004, 05:39 PM

YOu could make mono block gain clones and put them into your speakers that would work pretty good.

JRKO · 29th July 2004, 05:42 PM

Guess what I have comming from Peter Daniel in Canada?!?!?!

How about a mono block gainclone in a Tannoy Berkerley?

jleaman · 29th July 2004, 05:47 PM

WEll one of my ideas here soon is to build a few versions of these gain clones since i have about 8 chips.. One is powered active speakers then a pair of stereo mono blocks for bi-amping.

20th June 2004, 06:51 PM	#1
JRKO diyAudio Member Join Date: Dec 2003 Location: Here	Loud Speaker Crossovers and power amp placement 1)Is it better to have the crossover outside the cabinet? Not just for being able to get at it, but for the curcuit itself etc. 2)Is it best to have a short run of interconnect and a long run of cable? Or a long run of interconnect and a short run of cable? __________________ 'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553

20th June 2004, 08:22 PM	#3
JRKO diyAudio Member Join Date: Dec 2003 Location: Here	would mounting the crossover on the back of the cabinet make any difference? Or would placement on the floor or some other surface be best? __________________ 'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553

29th July 2004, 04:46 PM	#5
JRKO diyAudio Member Join Date: Dec 2003 Location: Here	bakanced? How about if my pre has a balanced output? could I then mount the amps inside and not suffer ill effects? __________________ 'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553

29th July 2004, 04:59 PM	#7
JRKO diyAudio Member Join Date: Dec 2003 Location: Here	? being a newbi I sometimes have trouble telling an 'in' joke from a valid comment. I have optical outs I could use. Any good? __________________ 'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553

29th July 2004, 05:42 PM	#9
JRKO diyAudio Member Join Date: Dec 2003 Location: Here	Surprise!! Guess what I have comming from Peter Daniel in Canada?!?!?! How about a mono block gainclone in a Tannoy Berkerley? __________________ 'I have nothing. I owe much. The rest I leave to the poor. - Francois Rabelais satirist & doctor d.1553


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20th June 2004, 08:12 PM	#2
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	The advantage to having the crossover external to the cabinet would be the additional distance of the inductors from the drivers, which would reduce cross-talk. Keep the interconnects as short as possible, the speaker cables long. Interconnects are subject to noise pickup, which is then amplified. Any noise picked up on the speaker cables will be less audible and won't be amplified.

20th June 2004, 11:37 PM	#4
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	For the sake of convenience the cabinet back is best, located as far as possible from the drivers. Another option is below the box in a separate sub-enclosure, especially if it's a floorstander.

29th July 2004, 05:39 PM	#8
jleaman Banned Join Date: Apr 2002	YOu could make mono block gain clones and put them into your speakers that would work pretty good.

29th July 2004, 05:47 PM	#10
jleaman Banned Join Date: Apr 2002	WEll one of my ideas here soon is to build a few versions of these gain clones since i have about 8 chips.. One is powered active speakers then a pair of stereo mono blocks for bi-amping.

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