External Crossover


On the advice of SVS I changed my setting on my subwoofers from 50 hertz to 63 hertz. In addition, I turned the volume up. The change opened up the soundstage, more detail, better /more defined bass. Not a night and day difference, but easily heard. Now I'm looking into purchasing a JL Audio CD-1.
Two questions:
1. Are there other external crossover units that I should consider?
2. Should I expect similar results as when I changed the low pass filter from 50 hertz to 63 hertz with the external crossover?
ricred1
1. Bryston and DSPeaker.
2. Cannot say because I do not know your system or why this adjustment accomplished what you describe.
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I use a Behringer DCX 2496 modded by Audiosmiles, over in the UK. Best $1k crossover you can get.