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Discussion Starter #1
I bought a 2013 Optima and had a local shop install a new audio system. I got the car back tonight and was really disappointed in the bass output of the system. This is my first real audio upgrade, so I wanted to get some more information before I talk to the shop.

Setup:

  • Kept the factory head unit (maybe the problem?)
  • Installed Alpine Type R 6.5" component up-front, coax in back
  • Installed Alpine amp
  • Installed sound mat/deadening (maybe the problem?)
  • No sub installed - obvious way to get more bass but I didn't want to go there unless no other options
My previous car had some cheap 6.5" Alpines that I got on clearance at Best Buy and could really put out some bass. I also installed a new head unit. There was no amp or sound mat installed.

I'd appreciate any input as to why I'm receiving so little bass from the current design.

Thanks!
 

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Cerato S Hatch Auto
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I assume that you've played with the EQ and still no go? Front/Back balance? Correct impedance outputs from Amp? I guess the sound mat wasn't actually in front of the speakers? :rolleyes:

Poor sound can result from "Surround Sound" settings or from phasing errors (wires reversed).
 

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Discussion Starter #3
I assume that you've played with the EQ and still no go? Front/Back balance? Correct impedance outputs from Amp? I guess the sound mat wasn't actually in front of the speakers? :rolleyes:

Poor sound can result from "Surround Sound" settings or from phasing errors (wires reversed).
I forgot to mention that - I did play w/ the EQ w/ the factory head unit. That did not do much.

As for the amp settings or sound mat, I have no idea what the shop did. I'll have to ask what settings the amp has and if I can adjust those myself.
 

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Cerato S Hatch Auto
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I was just wondering how the Alpine Amp was connected to the existing head unit. What model is it? Does it have a variety of input terminals? What impedence out (2, 4, 8 ohm)? If not matched correctly, you'll get poor sound. Let's hope that you can COAX a bit more base from the system!
 

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Discussion Starter #5
I was just wondering how the Alpine Amp was connected to the existing head unit. What model is it? Does it have a variety of input terminals? What impedence out (2, 4, 8 ohm)? If not matched correctly, you'll get poor sound. Let's hope that you can COAX a bit more base from the system!
I don't have the model # in front of me, but it was a basic Alpine amp around $200.

Well the car is at the shop now b/c I found the new HID headlights they put in did not work properly. While they have the car, going to adjust the amp and see if they can get some more bass out of the speakers. If that doesn't do the trick, a sub is looking more and more likely.
 

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type R's can have some good bass. there could be 2 main issues.

1. they have the crossover filter turned up to high and it is limiting the bass response
2. they didn't build good speaker adapter plates that seal the front wave of the speakers from the back sound wave. they could just be moving air that is cancelling the output. I would recommend and holes in the door metal behind the plastic door panel be covered with some type of sound deadening for best sound.
 

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Spectra 2006 (A/T 2000cc DOHC)
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Had the same issue with my Alpine stock stereo. I installed Blue Punk 6.5" 400w speakers in the 4 holes and same reaction as you. Had it replace for a Pioneer FH-X700BT and even the stock tweeters now sounds shiny and clear.
 

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2007 Kia Spectra EX 5MT
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I just recently bought the Alpine SPR-60c component set and SPR-60 coax for my 07 Spectra.

Did you ever get this resolved? If so, was it the headunit?
 
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