Need major help

[Silver 10+ year member]

OK, I recently had a Clarion RDB355D hooked up as my HU with a line out converter. Everything ran great! Perfect not one complaint.

I bought a Alpine 9825 yesterday for a HU upgrade. It has 3 Outputs, the RCA line-out is no longer needed. I hooked up everything yesterday to my HU and made sure the RCA's were ran to the correct output. Kicked on the HU everything works, perfect.

My sub distorts like a mofo. I played with the gains on my amp but no go. It sounds like crap like sandpaper when it hits. Not when its playing a tone, when it plays a tone its quiet.

Now, when I turn off the MOSFET internal amp (shuts off components) the sub POUNDS way better then it did then the old HU. When I turn the internal amp back on sounds like crap. Vocals, bass, everything. I have to listen to it quiet so it sounds decent.

My sub is inverted, so I dont think thats a problem. Could my RCA's be put in backwards?

Its not my componets becasue when I turn the sub off, the components sound fine even at high volume. It seems like something is interferring.

Now I'm either going to take this HU back and get a Pioneer DEH-4700 MP or keep this because I got it dirt cheap, but if someone knows whats wrong please help me!!

Thanks. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

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[lostsoul 10+ year member]

how you like your mxs? I was thinking of geting some to play around with they seem pretty decent.......sorry for the off topic post

 

[Silver 10+ year member]

I love it.

I found out the probem, it is my components. When I turn the amp off (internal) the sub sounds great. I turn the bass on the hu up. Sounds awesome turn on the components the bass coming from the components makes the vocals distort. Totally gay. My old HU put out only 9-10rms. This one puts out 18rms. The components are rated at 30wrms though. They are the TS-G6840R Pioneer speakers http://www.pioneerelectronics.com/pna/product/detail/0,,2076_4071_68040405,00.html. I was underpowering them before also but they sounded soooooooo much cleaner.

What happened and is there a way I can turn down the bass on the components, but turn up the bass on the Sub? (The sub is already at +15, but the HU bass is zero so I really cant hear it).

Or I heard something about bass blockers, where can I get those? (Last resort)

 

[SlimShady16 10+ year member]

My friend bought some bass blockers off of http://www.cardomain.com for i think like $7 or sumthing cheap.

 

[jsloan10 10+ year member]

"My sub is inverted, so I don't think thats a problem. Could my RCA's be put in backwards?"- No this has nothing to do with it, you're head unit is completely to blame.

"Now I'm either going to take this HU back and get a Pioneer DEH-4700 MP or keep this because I got it dirt cheap, but if someone knows whats wrong please help me!!"

- Unfortunately you have got you're hands on one of the first run Alpine HU's that have been giving everybody so many problems this year, you could return it and get a better model or go for a Pioneer model, this will correct the problem, look for a Head unit that has internal xovers for you're components when getting a replacement.

 

[Silver 10+ year member]

This is what I'm looking at. Is it worth it?

http://www.circuitcity.com/ssm/Pioneer-In-Dash-CD-Player-DEH-P6700MP-/sem/rpsm/oid/115885/rpem/ccd/productDetail.do

thanks

 

[jsloan10 10+ year member]

Quote-"2-way crossover adjustment: Custom tailor the sound of your system with the touch of a button. The high-pass filter lets you get the right mix of sound from your front and rear component speakers while the subwoofer direct button lets you change the settings for your subwoofer on the fly to get the right amount of bass pumping."

Yep I think she'll work well.

 

[Car Trekker 10+ year member]

You probably need to upgrade the main yellow power wire feeding the deck...likely the stock wiring is not heavy enough. A 10 ga wire, fused at the battery should do the trick for ya...make sure your ground is good too!.