JL Audio CR-1. Very adjustable. Takes the low freq. load off your speakers and amp depending on where you cross it over at. Had mine for several years now and won't go back. Several audio friends have got themselves one after hearing how mine works and they got a chance to play around with the settings on it. Kinda pricey but if you can pick up one used (as I did) you'll be very happy. Easy to adjust and try different settings! Good listening to whatever you decide to pick up.
Electronic cross-over on pre-amp out, to split signal to subwoofer and bookshelf speakers
I have a 50 W amp for 86 dB bookshelf speakers.
I really want to keep both amp and speakers.
My idea is to have an electronic crossover on preamp out, split the signal say at 80 Hz - Send the lower electronic cross over out to a subwoofer. Send the high crossover out to my existing 50 W power amps.
This would extend speaker frequency range to subwoofer capability - say 25 Hz, reduce the power amp load and allow to play the bookshelf speakers a bit louder,/ have more headroom.
I am sure others have already done. What cross over did you use? Was it successful?