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Old 9th July 2004, 11:23 PM   #1
LqDFx is offline LqDFx  United States
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Default Better Sound Quality

I have recently totally redone my audio system in my car. I still am lacking on it though. I need some advise. I will start by what I have and then tell you what I want to get and the problems I have thus far!

Pioneer DEH-4600MP - 50w Peak x 4
Polk Audio EX351A 3.5" (Dash) - 2-25w RMS / 50w Peak
Fosgate FRC3268 6"x8" (Hatch) - 8-60w RMS / 120w Peak
Lightning Audio B1.300.2 Amp - 100w RMS / 450w Peak @4ohmx2
Lightning Audio B2.10.4 10" Subs - 100w RMS / 750w Peak

I want to install some tweeter in the front, not sure if I can wire them in with the dash speakers without an amp though? I also want to add more midrange to to front and rear sound stage, but I am not sure what to get to do this? I was thinking of getting some 6" 2-way speakers and wiring them to amps using the PreAmp outs from the Pioneer.

I also getting distortion out of the 6"x8"s and the 3.5"s I have now. I was thinking that it is because of the bass being sent to them and I should get some bass blockers.

Any help I can get would be great. I listen to most anything in my car and I want the system to sound good for everything. Anything I can ad to help out let me know!
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Old 10th July 2004, 05:04 AM   #2
Immo_G is offline Immo_G  Australia
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I'd suggest an amp for front and rear speakers, that should make the most difference.
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Old 10th July 2004, 05:46 AM   #3
pk386 is offline pk386  United States
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first I'd like to make a personal rant about the car audio section....

Sorry LqDFx don't take it personally. I'm gonna make a new thread devoted to this in a min.....

Please list exactly what type of car it is! It is impossible to give advice on improving any thing whith out knowing what type of car it is!
just list
Year:
make:
model:
trim level (i.e. EX, DX, GSR, GLX ect.)

ok now that is over with.

if you really want to improve your sound quality save your money and buy a nice component set. you should be able to pick up a good set starting out at $150 USD. you might have to make kick panels for them but their not that hard to do. then find a nice amp power them spend more than $199 on it. a component set makes all the difference.

you got a good head unit. the subs I don't know what thpe of box their in so I cant advise you on that. but sounds like your off to a good start.
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Old 10th July 2004, 07:01 AM   #4
LqDFx is offline LqDFx  United States
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Sorry pk, I was in such a hurry to get out the door that I forgot to mention what I am driving!

Auto Stats: 1986 Ford Mustang GT Hatchback (5-spd).

I just have gotten done with building the subwoofers new home in my hatch. It is a custom Sealed enclosure designed to fit my car and the subs. I have .763 FT^3 in each box. After a test run, I think the box is going to do just fine!

I was thinking about the front speakers when I went to get some supplies for the box, and I picked up some High Pass Crossovers at 400 Hz. I think this should help with the distorting of the Polk 3.5"s. Ans I have 1" Dome Tweeters to install now, wiring them in parallel will not drop the Ohm value will it?
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Old 11th July 2004, 02:10 AM   #5
LqDFx is offline LqDFx  United States
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Well I just got back from my dads, they don't like it when you work on cars on the apartment grounds. Anway, I installed the crossovers and the tweeters. I no longer get any distortion at any volume level and the sound is full and rich! I might have a little too much highs, but the bass is not coming from the 3.5"s anymore!
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Old 11th July 2004, 05:23 AM   #6
pk386 is offline pk386  United States
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Cool. yes you can wire the tweeters in parallel with the fornt speakers just make sure you have a high pass crossover (Capisitor) in line with it. about 2-5 kHz should do.

Sounds like you got a plan.

Oh and if the bass is a little too tight and punchy for you when you listen to the subs, put a little pillow stuffing in them to Simulate a larger box.
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Old 16th July 2004, 10:49 PM   #7
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Talking car audio....

hi there, id like to offer my advise! personally id amp just the front speakers, or amp the rears with a lot less power, id run a single set of component speakers in the front with a set of two ways or something like that in the rear - just for fill. that way the sound stage stays in the front (where ur at!), run the components with a hpf off the amp of about 80-100hz, then run the sub at the same, the bigger the sub the lower the lpf. and the same goes for the fronts the bigger the component speaker the lower the hpf hope this helps!!
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Old 17th July 2004, 02:45 AM   #8
LqDFx is offline LqDFx  United States
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almichie,

I hear your advise, and I do agree with you for the most part. I bought a really good head unit that seems to have more than enough power to drive the speakers I have, they were clipping after all! I just installed some tweeters and a crossover to cut the bass out of the front of the system. Now I only get mid-range and up in the front. I installed a pair of 10" Lightning Audio subs in a sealed enclosure in the hatch for all of my deep lows. I have a pair of Fosgate 6"x8" 2-ways in the hatch also to finish out the mid range coming from the rear. The way I have it set up I feel that most of the sound is coming from the front and I get that concert hall feel with the style music I listen to.

I am hoping to install more speakers and a better looking enclosure in the future since the car will be a show car when I am done. As far as the sound system goes I did all the wiring right the first time, that way I will not have to rip it out later!

here is a link to my photos on another site. I hope to be showing more than a sad car in about 2 years!
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Old 17th July 2004, 03:55 AM   #9
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Hello,

The HP filter for your speakers is too high.

Where is your 120hz to 400hz sound reproduction coming from?

I realize there will be some info because the 'bass blockers' are probably 6db slope.

Try a bass blocker (or build) one that is rated at 150hz .

Things should sound better.

Cheers

Kevint
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Old 18th July 2004, 10:32 AM   #10
djQUAN is offline djQUAN  Philippines
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I'd go with that one. use a lower frequency and steeper slope crossover. I'm using one at 100Hz 12db/oct. I would have gone down to 50-75Hz since I have 5.25" coaxes in the door but 100 is the lowest setting in my XO.

powering the fronts with an amp of about 50 watts (real watts not PMPO) RMS and that will already go loud. my system uses only 50 watts per ch in the fronts and 170 watts per 10" sub and the headunit amp for the rear. it is enough to trigger car alarms of parked cars. slot loading subs also make it go louder.
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