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|  by jonboy
Start New Question Here -- Back to Tree
| | Hi all. I am new to car audio and to this forum.
I desperately need some advice with setting up my car audio system.
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CAR:
I have a 2003 pontiac vibe.
The car has moon and tunes package (GM lingo for crappy door speakers and a piece of junk four channel amp?)
I removed the door speakers, left the tweets unplugged. I then installed four Infinity 6022si speakers (tweets built-in on these... do they call these coaxial speakers?)
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SETUP:
1 mono-california amp (ap1000m)
documentation link: http://www.profileusa.com/products_amps_ap.cfm#specs
1 Infinity Reference 1250w 12" sub in a sealed box.
documentation link: http://www.infinitysystems.com/car/support/default.aspx
1 Tsunami 2.0 farad litewave cap to tighten the sound and keep the lights from dimming.
documentation link: http://www.tsunamionline.com/product.php?id=60
I have a factory deck, but have ordered a Pioneer FH-P8000BT stereo to install.
documentation link: http://www.pioneerelectronics.com/PUSA/Products/CarAudioVideo/In-Dash/CD-Players/Pioneer/FH-P8000BT?tab=D
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SIDE QUESTION:
I need help with removing the factory amp because I don't feel like cutting the ends off the in/out leads, but I think I found a way to do this with a metra two-cable kit. I can make a new forum post for this topic, but if anyone has some stuff on this already, please let me know! :-)
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MAIN QUESTION(S):
Before I ask the question(s), let me just say that I don't know much about the human ear, and don't know how to match frequencies, levels, etc. If anyone out there knows of a place that shows frequency levels as a chart, that would be great!
Now...
I see that my california amp offers:
selectable bass boost (0-12 dB) at 45 Hz
variable low-pass filter (50-250 Hz, 12 dB/octave)
subsonic filter (20-50 Hz, 12 dB/octave)
I also see that the Pioneer HU offers:
high and low pass filters, and selectable cutoff frequencies.
I'm not using a four channel amp, just the mono for the 12" sub, so my question is really this:
What is the best way to pair up and match the frequencies between the AMP and HU? Should I flatten the levels on the HU, adjust the AMP and then readjust the HU?
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Page Views: 90 | Reply Posted: 10/27/2009 16:27:40 by:   swez Old Man Audio | Welcome to CK!
You have a good general overview of components to put a nice aftermarket system together from a lame factory system. The speakers, sub and Pioneer HU are a very good match.
The sub amp has ample power to drive your sub, but just remember this is a marginal amp. If you use it smartly, it should get the job done. However, it's not top tier gear either. (Rockford, Alpine, Infinity, JL JBL, Kicker and others)
The Infinity 6022si speakers are Coaxial 2-ways, shallolw mounted and 2 ohm impedence. They won't need a lot of power to sound nice off that Pioneer HU or a modest 4 channel amp.
One thing I don't know for certain on this vehicle, if your stock HU has GM Data Buss Links for door chimes, steering wheel controls and integration to the climate control systen too. Metra and others have now made patch kits to keep these features when going to Aftermarket HU's.
Finally, You may wish to just leave the factory amp and harnesses alone and bypass them as needed. They won't hurt being there w/o power or speakers connected to it.
Swez
PS, We'll walk ya through the other stages as needed OK?
| | Reply Posted: 10/28/2009 08:31:15 by: jonboy | Thanks, Swez.
I appreciate the reply.
I also have a 4 channel amp (profile AP1040).
documentation link: http://www.profileusa.com/products_amps_ap.cfm#specs
Something tells me that at the 2 ohm impedance, this 4 channel amp would be way too strong and could potentially blow the speakers since RMS at 2 ohm is 125 x 4. LOL! The coaxials are only rated for 50 watts RMS.
I also belong to the genvibe forum, but it seems that most folks don't check the forum very often.
Here is a post regarding vibe amp bypass:
http://forums.genvibe.com/zerothread?cmd=print&id=12040
Would you mind taking a look at lazytiger's post regarding amp bypass, and then let me know whether or not I should go this route, or actually use the 4 channel amp?
If I can use the 4 channel amp, what is the best way to install?
Thanks. I really do appreciate your help.
Jon
| | Reply Posted: 10/28/2009 15:14:17 by: swez Old Man Audio | Jon,
Read that link on Genvibe and without some good pics, and wiring diagrams, hard to say exactly what he did and why. It may have worked out well, but am sure it took him a while to get all the wiring right. Tiger seems to know his project well and thought it out fully in the process.
It seems to me that there'd be an easier way to do this and not use the factory amp at all. Most factory amps have preset EQ filters for the speakers used in the OEM install. Changing the speakers may help, but getting the sound you desire is not so easy without other EQ tools.
Finally, that AP 4 channel amp mentioned is pretty strong for the speakers you have now. However, it can be used with very good results through a very careful install and setup plan. (Only need 60 x 4 watts here... not the whole pizza)
Comments?
Swez
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