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Old 06-10-2013, 06:55 PM   #21
Fuzzygreen
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Quote:
Originally Posted by MrMyth View Post
I can report that the Rockford Fosgate P3SD2-8 fits in the stock enclosure if you use a 3/4" MDF spacer. Screw the spacer down with the stock holes, then screw the new woofer to the spacer. Don't forget to plug or cover the hole in the back of the enclosure. I used 3 inch 12 gauge speaker wire from the stock connectors to the Punch's push terminals and wrapped the connections in duct tape. I had also stuffed the box with polyfill previously. Completely reversible mod, if you want to put it all back to stock.

The woofer is DVC 2 ohm so its a direct replacement load-wise for the Sony speaker. It also kicks the out of the stock woofer. I turned my bass down to +1 from +4 and still have more low end response. The bass is more vibratory, if that makes sense. Whereas the Sony is boomy and sort of clipped, the Punch goes more into subsonics. My dubstep (yes, I know) sounds like my home stereo now. I feel the music as much as I hear it.
I listen to everything but Country (and even then a little Soggy Bottom Boys) and the Punch makes everything sound better. It helps that I don't have to boost the bass so much, of course, but the Sony was too loud in the 45-55Hz tone and it overpowered the sound. I've had polyfill for about 4 months, and I tried running with the center unplugged for about a month. Each one of those moves made the Sony sound a bit better, but I still wouldn't call it close to the Punch.

The Punch can be had for about $100 on Amazon
did you make that 3/4" mdf spacer or purchase it? i dont have any tools to make :(
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Old 06-10-2013, 08:13 PM   #22
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Im gonna have to look into this.

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Old 06-11-2013, 07:28 AM   #23
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Quote:
Originally Posted by MrMyth View Post
I can report that the Rockford Fosgate P3SD2-8 fits in the stock enclosure if you use a 3/4" MDF spacer. Screw the spacer down with the stock holes, then screw the new woofer to the spacer. Don't forget to plug or cover the hole in the back of the enclosure. I used 3 inch 12 gauge speaker wire from the stock connectors to the Punch's push terminals and wrapped the connections in duct tape. I had also stuffed the box with polyfill previously. Completely reversible mod, if you want to put it all back to stock.

The woofer is DVC 2 ohm so its a direct replacement load-wise for the Sony speaker. It also kicks the out of the stock woofer. I turned my bass down to +1 from +4 and still have more low end response. The bass is more vibratory, if that makes sense. Whereas the Sony is boomy and sort of clipped, the Punch goes more into subsonics. My dubstep (yes, I know) sounds like my home stereo now. I feel the music as much as I hear it.
I listen to everything but Country (and even then a little Soggy Bottom Boys) and the Punch makes everything sound better. It helps that I don't have to boost the bass so much, of course, but the Sony was too loud in the 45-55Hz tone and it overpowered the sound. I've had polyfill for about 4 months, and I tried running with the center unplugged for about a month. Each one of those moves made the Sony sound a bit better, but I still wouldn't call it close to the Punch.

The Punch can be had for about $100 on Amazon
Just ordered this sub, spacer, and Poly fill from sonic electronix....how did you cover the hole in the back of your box? And I'm curious if anyone knows how many cubic feet the factory sub box is....this Rockford sub is recommended for .75 ported and under .70 sealed.

Last edited by aaron.b; 06-11-2013 at 09:01 PM.
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Old 06-11-2013, 06:35 PM   #24
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also, can the factory grill be reused? i just wanted to make sure i know everything before i start ordering.

thanks!
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Old 06-11-2013, 09:52 PM   #25
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Sorry, just saw the questions.
The Sony amp isn't going to blow your doors off no matter what woofer you attach to it, so I just sealed the back hole with super sticky electrical tape.

I can make MDF spacers, but for time and effort plus materials it was easier/cheaper to buy a set of four off of ebay. Paid 13.59 from seller CarSoundWarehouse.

Factory grill cannot be re-used - doesn't look like its big enough to go over the RF Punch. RF makes a grill, but honestly I don't put anything in my hatch that could puncture the speaker so I didn't cover it.

I decided I wasn't going back to the stock sub so I went back inside the box and stripped off the connectors and wired directly to the RF's terminals. Just wanted a cleaner install. As the Punch has loosened up/broken in its only gotten better.

A warning - if you are a rattle nut do not do this mod. You will find out just how well your car is put together. After a listen to Daft Punk's Random Access Memories I know I'll have to Dynamat around the door speakers and in the headliner.
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Old 06-12-2013, 11:56 AM   #26
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Even with the stock Sub This car rattles a bunch. I'm going to install mine today if i have time.
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Old 06-12-2013, 02:19 PM   #27
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did you run it on just 1 of the coils to keep it at 2ohm?

thanks for all the info! im placing my order soon.
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Old 06-12-2013, 07:29 PM   #28
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Quote:
Originally Posted by Fuzzygreen View Post
did you run it on just 1 of the coils to keep it at 2ohm?

thanks for all the info! im placing my order soon.
No, it is dual voice coil 2 ohm if you got the right model. Make sure to get the P3SD2-8.

Rockford makes both a DVC 4 ohm AND a regular depth 8". You don't want either of those. My speaker is shallow mount 8" 2 ohm DVC.
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Old 06-12-2013, 07:51 PM   #29
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hi thanks for quick reply.
if it is indeed a dual voice coil 2ohm woofer, runing it on 1 coil will yield 2ohms,
if you run both coils on parrallel, it'll be 4ohms

the sony sub is only 2ohm right?
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Old 06-12-2013, 09:26 PM   #30
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just to be clear, the Sony sub is dual voice coil, each coil being 2 ohm. There are a total of four connectors inside the sub box, two pos and two neg.

The RF is also dual voice coil, each coil being 2 ohm. There is no need for changing the wiring and I'm not recommending anyone do so (just a little CYA).

The Sony amp is putting out two channels to the sub, you can test this by disconnecting one set and witness the reduced strength of the bass overall. I don't know that the amp is 1 ohm stable and I wouldn't want to test it since its sitting under insulated carpet and surrounded by styrofoam.
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