I am about to order abunch of Selenium 15PW3-SLF-15 drivers for OB bass driven temporarily by a pairof BASH 300S plate amps which go to 150hz 4th LR. I am then to use TT 12" Alnico for mid bass & B & C DE10 for for up top & may try othe CD's till I am happy up top. SET will be used on TT & CD. Question is ...How many 15" Selenium can I go without crazy low ohm. I would like 4- per side, but wiring this for no less than 4-ohm load I have not done before. WAF is NO factor in any of this,I have dedicated play room. I wood use my 45 for low volume listening & 300B for maore oomph..bi-amped at very least & maybe tri. Thanks for any help. $ 500.00 is budget for bass driver excluding shipping.