Originally Posted by willblake13
Joined head fi soley to answer this question. Pardon my poor grammar and spelling mistakes, typing on a new phone. I am a proud owner of a 2010 rav4 with:
JVC double din 5v out head unit.
4500 watt boss amplifier. Mono block.
2400 watt quantum audio 4 channel amplifier.
4 audiopipe 6 inch 250 watt peak 125 rms loudspeakers.
2 audiopipe super tweeters 500 watt peak, 250 rms.
2 rockford fosgate p2 dual 2 ohm 15 inch subwoofers in a custom box.
My head unit is set up so that my speakers sound off to produce a sound comparable to being in the center of a room
. I use neutron music player as my music player and plan to install a 31 band EQ tomorrow afternoon. I love my system.
You can scrap the ambiphonic processor on the Android app and the separate 31band graphic EQ and go for a car audio processor with all the bells and whistles. Anything from those pricey Alpine F1 series surround sound processors, or the entry-level stereo processor crammed into the $350 Pioneer 860MP head unit. These will actually have more options to control the sound. For one thing, the Pioneer (though the most basic for getting around car acoustics) has an active crossover, so you can send out a true 4v (2v nominal AFAIK) signal to your amps that are already cut for the correct frequency to the drivers they're going to. Second, with that set, you can set up a time alignment setting for each tweeter and midwoofer separately, to simulate being in the center of a room. Some systems seems sharper in the treble by ear, and no EQ or gain restructuring can seem to tone it down, because the real culprit is a few milliseconds off in hearing one tweeter vs the other speakers. I've seen one car before measured with the time alignment off using a USB mic, and the proper time alignment settings don't improve playing a test tone, but by our ears the imaging and the response improved. I actually use just the T/A in my car, with EQ disabled. This isn't a matter of placebo, although we can't measure the actual time delays because we used general measurements then adjusted from there, vs the high-end receiver+processor combos that really have their own tuning mic like Audyssey in home theater set-ups (we were using a Samson USB mic with a laptop).
Also, don't forget to angle the tweeters right. Problem with supertweeters and other non-dynamic designs though is the dispersion can be too narrow, and ergo harder to aim properly, if they're in a location where there are quite a few obstacles in the signal path (which might sometimes be the case for some designs that are too large to fit on the dash/A-pillars). Of course, the trade-off of putting them on the dash is that the pathlength of the driver side tweeter is too short relative to the other transducers.