Hi,
I am going BSW stage-1 upgrade for 2004 BMW X5 non-dsp.
But I already have JBL GTO-627 speakers 4pcs.
WHat you recomend : order full upgrade from BSW or use JBL for mid-bass?

I just found http://www.sonicelectronix.com/item_...hn+AMD60Q.html, what you think?
IKA