I've been upgrading an EV PA speaker, using an Eminence Beta15A, and a Selinium D220ti-8 high-freq driver. I want to replace the stock x-over (200 watts) with a x-over in the 350 watt range. Economy is a major factor. Can I use just a HPF, or is that detrimental to the sound? Or do I have to bite the bullet, and go with a standard 2-way?