View Full Version : mono summing x-over


RF1031
03-19-08, 08:16 PM
I want to use an electronic crossover for outdoor speakers and a weatherproof subwoofer. Boston acoustics voyager sub has an amp available with a subwoof crossover, but it is only low pass to sub. I want to high pass to satellites amp, too (the proper way).

Problem is: Lots of pro crossovers available with mono summed subwoof output, but they all have xlr or pro level 1/4" jacks. I found some consumer level units with rca in and out, but they do not sum to mono.

Question: Better to use rca to 1/4" adapters with pro unit or to use consumer unit and y-jack output to sum to mono for sub-woofer amp?

Thanks

Randy

whoaru99
03-19-08, 10:34 PM
I want to use an electronic crossover for outdoor speakers and a weatherproof subwoofer. Boston acoustics voyager sub has an amp available with a subwoof crossover, but it is only low pass to sub. I want to high pass to satellites amp, too (the proper way).

Problem is: Lots of pro crossovers available with mono summed subwoof output, but they all have xlr or pro level 1/4" jacks. I found some consumer level units with rca in and out, but they do not sum to mono.

Question: Better to use rca to 1/4" adapters with pro unit or to use consumer unit and y-jack output to sum to mono for sub-woofer amp?

Thanks

Randy

Well.... I think it's not proper to simply "Y" the outputs together. They should go through a summing network so the outputs don't interfere with each other. This can be made from a few resistors. Just Google "mono summing network" for some ideas.

OTOH, many people seem to mix pro gear and consumer gear without any special fuss by using the appropriate adapters.

EC
03-21-08, 12:07 PM
I use one of these in my 3rd system

http://www.rolls.com/products/sx45.php

and its cheap!

Kal Rubinson
03-21-08, 12:58 PM
I want to use an electronic crossover for outdoor speakers and a weatherproof subwoofer. Boston acoustics voyager sub has an amp available with a subwoof crossover, but it is only low pass to sub. I want to high pass to satellites amp, too (the proper way).

Problem is: Lots of pro crossovers available with mono summed subwoof output, but they all have xlr or pro level 1/4" jacks. I found some consumer level units with rca in and out, but they do not sum to mono.

Question: Better to use rca to 1/4" adapters with pro unit or to use consumer unit and y-jack output to sum to mono for sub-woofer amp?

Thanks

RandySee if you can find a used Paradigm x-30 or an Outlaw ICBM.

EC
03-21-08, 01:59 PM
See if you can find a used Paradigm x-30 or an Outlaw ICBM.

Mirage also makes something similar to the X-30. I think it is called the LFX-1 or something to that effect.