Need input on system set up!
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=43090
Printed Date: May 04, 2025 at 6:12 PM
Topic: Need input on system set up!
Posted By: noakes75
Subject: Need input on system set up!
Date Posted: November 15, 2004 at 11:14 PM
alright, i have a 95 thunderbird that im tryin to make kinda nice before i leave for the army. i got almost all my stuff for my system just need a few suggestions. so heres the list of equipment Blaupunkt Sanfransico CD72
Blaupunkt 6X8s in the doors
Kicker 6 1/2 componet set in the rear
4 15" kicker comp CRVs.
directed 500X4 for componets
power acoustik 3000X1 im in the process of getting a MA Audio amp for the subs.
i was wondering what size amp wire i should be useing. im currently useing 4gauge, and considered moving up to 0. i thought about putting a set of 6X9s in the back with set of 6 1/2s in the kick panel, but i dont want it to get too sloppy. any suggestions?
Replies:
Posted By: maaudio1
Date Posted: November 15, 2004 at 11:19 PM
0 gauge back to a distribution block and 4 gauge out to the amps. And use 4 guage ground for each amp. By the way which MA Audio amp you going to? ------------- 2004 Mazda 3s Hatchback
2- MTX 4500 8" subs powered by MTX 251D
Posted By: noakes75
Date Posted: November 15, 2004 at 11:23 PM
shouldnt all the amps use the same ground though? im useing the MA Audio HK401SX it breaks down to .5 ohms so i think that'll be fine. claims it can push 1800 RMS at .5. yea?
Posted By: maaudio1
Date Posted: November 15, 2004 at 11:35 PM
You could run a 0 guage ground to a distribution and 4 guage to each amp. That way the amps are grounded the same.
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2004 Mazda 3s Hatchback
2- MTX 4500 8" subs powered by MTX 251D
Posted By: kfr01
Date Posted: November 16, 2004 at 12:07 AM
Definitely put 6.5s in the kick panels. It will be a vast improvement over 6x8s in the doors.
Spend as much as you can on those main front components. I wouldn't replace your speakers in the rear - it would be a waste of money in my opinion.
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New Project: 2003 Pathfinder
Posted By: maaudio1
Date Posted: November 16, 2004 at 12:08 AM
Also just to let you know. MA Audio rates those amps at 14.4volts
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2004 Mazda 3s Hatchback
2- MTX 4500 8" subs powered by MTX 251D
Posted By: noakes75
Date Posted: November 16, 2004 at 8:02 AM
thanks for all the help. ive heard people/companys sayins 14.4 volts and everything. obviously a car is 12, so how do you acheieve 14.4? im a bit confused
Posted By: haemphyst
Date Posted: November 16, 2004 at 8:21 AM
14.4 is the nominal charging voltage for a lead acid battery, and is the nominal output voltage for an alternator with the engine running. This equates to a cheap power supply in the amplifier in my opinion, because it is not a regulated power supply - it needs higher input voltage to get proper power out. (A regulated power supply will always provide the same power, regardless of the input voltage...) That or the manufacturer is embarrassed to tell you what the amp makes at a real world voltage, and they want to inflate the abilities of the amp... bad mojo, man! If your alternator cannot maintain 14.4 volts, then you ARE NOT going to get all of the power you thought you paid for.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: noakes75
Date Posted: November 16, 2004 at 8:28 AM
alright. still a bit confused here. but i currently have the yellow top optima and a 1 farad cap. i considered upgradeing my altinatior. from the factory its 135 amp, but napa has a 225 amp. that sucker costs some coin, but is it worth it?
Posted By: noakes75
Date Posted: November 16, 2004 at 8:29 AM
and is that what your gettin at? with the 14.4 or am i way off the beatin trail?
Posted By: haemphyst
Date Posted: November 16, 2004 at 8:39 AM
No, but yes, and I don't mean to confuse you with that statement.
Yes, buy the alternator. An upgraded alternator WILL ALWYAS pay you back in system stability, as well as longevity.
No, you are not way off the beaten trail. A stiffer output voltage from the alternator will provide closer to the 14.4 on a more consistent basis than an alternator that is loaded close to it's maximum capabilities already.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: noakes75
Date Posted: November 16, 2004 at 10:40 AM
providing i get the new altinator, with the yellow top battery, and a 1 farad cap. should that be enough? i considered getting a bigger cap. i really dont have room for another batterie. i have my 4 15s in my trunk now, and im finding it very difficult to find room for the amps, so i was thinking a bigger cap after the altinator. any suggestions?
Posted By: haemphyst
Date Posted: November 16, 2004 at 10:44 AM
ALWAYS start with the alternator, then add batteries, THEN add cap...
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: noakes75
Date Posted: November 16, 2004 at 1:03 PM
oh.. opps i did it a bit backwards... thanks
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