Fellas (and ladies) I need help. Without knocking name brands i need some advice. I just installed a 5 channel hifonics amp (that works fine). I have installed line level (hi-lo) converters on the two front and two rear 6.5's (i bypassed the factory amp, The center channel is the only speaker still on the factory amp) and running 2, 2 channel rca's to my amp. My 5 channel amp has a switch that will allow me to switch between 2, 4, and 5 channel inputs. Im using 4 channels. Im getting sound thru all of my speakers (2 ohm infinity 6.5s thruout, and 2 4 ohm kicker subs wired to a 2 ohm load. Ive checked my polarities and im confident that everything is hooked up right, as i get plenty of sound thru all of the speakers. The problem is...im getting about the same volume thru the 6.5's (and tweets) as i did with with the factory amp. The subs hit ok at best but definately NOT like they did in my other car. I AM using my factory HU. And the only thing i can wonder is do i need a line driver to increase my input voltage? My amp is no zapco or A/D/S but i know its capable of waaay more because in my old car with a pioneer HU, it hit like hell and was pretty damn clear. I need more volume in mids highs and subs. JL Audio Cleansweep???? PLease help.

 

if you bypassed the factory amp, there is no need for the LOC's that you installed (high to low converters)

 

How do you mean? My amp has no hi level inputs. Please explain. It only has rca inputs.

 

I tapped into the 4 channel speaker wires beofre the amp at the harness and tied the wires into an LOC then sent the rcas to the rear of the car and sent speaker wires from the rear of the car back up to the amp where i tied them cut into the harness, sending the signal to the speakers on the other harness. PLease tell me if im doing something stupid. Im an electrician and very well versed in fiber optics but no installer by any means. Thanks by the way.

 

the wattage from the HU before the factory amp is very low, and any AMP should be able to accept it. The High-low coverters reduce the wattage so the amps can accept it, however the signal is already low enough.

 

OK well how would i hook up an amp with no speaker level inputs? I have to use RCAs on my amp.

 

take the positive and neg. wires from the HU and solder them onto some RCA pigtails.