Installed custom 8" sub box

Redmann1d2n · 06-13-2015, 12:21 PM

I wouldnt say its free air.it is too small of an area plus I do have spacers in there where I put the top onto and I also put in weather stripping against spacers.

Redmann1d2n · 06-13-2015, 12:33 PM

I never liked the sound of a single sub even if it did have DVC. I had a single JL 10 in my 2g Eclipse and I wasn't satisfied so installed a second. On the Z I made another board added a send hole and added another 8" Type R. I am now actually happy with the sound and the way it looks. Carpet also helps a ton even though you don't see it.. I just put the Alpine Head Unit on "Rock" made 3 slight adjustments to the equalizer and done.

For a while I thought about taking out the Polk DB woofers in the doors and install 6.75 Kicker "subs" there. I have one in another car and thought it was a rich Midbase-Midrange woofer plus they can handle more power. Never know might do it in the future....

RonRizz · 06-13-2015, 04:36 PM

Quote:

Originally Posted by Redmann1d2n

I wouldnt say its free air.it is too small of an area plus I do have spacers in there where I put the top onto and I also put in weather stripping against spacers.

your box not being sealed 100% definitely had an effect on power handling, as well as overall performance. even the slightest air leak can ruin a perfect speaker. I definitely would not call this configuration free air by any means, though.

RonRizz · 06-13-2015, 04:41 PM

Quote:

Originally Posted by Ronin06

I wouldn't worry about staging with a sub. Low frequencies are non-directional, depending upon where you set your crossover point.

True, to an extent. Sub-bass frequencies are non-directional to a point, but they definitely contribute to your soundstage. A truly exceptional subwoofer will get lost in the front stage, and blend seamlessly with it. A mediocre subwoofer cant do that regardless of tuning/ time alignment..... If you can tell where your subwoofer is located in your car, it needs work. (if you are anal about it, that is) most are not. I am.

Redmann1d2n · 06-16-2015, 05:10 PM

Quote:

Originally Posted by RonRizz

True, to an extent. Sub-bass frequencies are non-directional to a point, but they definitely contribute to your soundstage. A truly exceptional subwoofer will get lost in the front stage, and blend seamlessly with it. A mediocre subwoofer cant do that regardless of tuning/ time alignment..... If you can tell where your subwoofer is located in your car, it needs work. (if you are anal about it, that is) most are not. I am.

What about applying Dynamat inside the enclosure to make it sealed? I have a lot of that stuff just sitting around

RonRizz · 05-25-2015, 08:04 AM

Redmann1d2n · 05-30-2015, 07:38 PM

I did it. It needs some tuning and that PDX amp is pretty powerful. All the gains are all the way down and actually sounds good flat.
I started out with some cardboard cut to size of the area and then traced out the area where I am going to put the 3/4 MDF board over

Redmann1d2n · 05-30-2015, 07:40 PM

then I cut out the cardboard and traced an outline onto the MDF board

Redmann1d2n · 05-30-2015, 07:42 PM

It fit but you will defiantly need a sander to make it fit better and take out the jagged edges. Make it look clean or pretty or whatever. I have an 8 inch DVC type R there

Redmann1d2n · 05-30-2015, 07:48 PM

I had some padding from an AK-47 I bought and used it for a tighter seal to the floor. The box is sort of Hybrid. Its not a full complete box. Its just sealed well with weight and screws. Building a box would be a b-tch and the area would not be well utilized hence the odd looking interior of the box. I could not get exact dimensions. Just winged it with a Jig jaw and a sander.
This took me a few hours to figure out how to build this dang thing since I wanted it more stealth. I might improve it in the future who knows.

It actually sounds great. It is not a big blasting system, but I wanted a rear view camera and the ability to use MP3 and blue-tooth along with all the other features on the Alpine head unit .There are a lot of electrical components in this car esp the DC motors in the engine.

SwissCheese · 05-30-2015, 10:37 PM

Very nice! And thanks for all the pictures along the way! How difficult did it all end up being?

Redmann1d2n · 05-31-2015, 01:42 PM

To be honest. I hated it.... lol All the bending over the trunk killed my back...

axmea? · 05-31-2015, 02:04 PM

Quote:

Originally Posted by Redmann1d2n

To be honest. I hated it.... lol All the bending over the trunk killed my back... Right now I am trying to tune it. Plus I might widen the inner box. I would not recommend the 8 alpine sub. I think they over rated it on power handling. I absolutely hate it actually

LOL. Car audio is back breaking work. Not to mention the clean up. You pay to play though. It is quite a commitment & worth it in the end.

Nice work.

Redmann1d2n · 05-31-2015, 03:39 PM

Yeap now I gotta do my F-150. Going to wait a few weeks. I need to buy an amp for that. I might stick with the PDXv9 since that over powers my 8 type r. Got 2 JL 10s for that.

jburch · 05-31-2015, 04:26 PM

this is awesome. was it hard to do? this would be something id love to try to do.

05-25-2015, 08:04 AM	#6 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	SwissCheese likes this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

05-30-2015, 10:37 PM	#11 (permalink)
SwissCheese Track Member Join Date: Aug 2013 Location: Iowa Posts: 785 Drives: 2012 370Z NISMO Rep Power: 67	Very nice! And thanks for all the pictures along the way! How difficult did it all end up being? __________________ Current Ride: 2012 Nissan 370Z NISMO #0389 Mods: Fast Intentions Resonated Test Pipes and TDX Exhaust with 18" Resonators (#1054), K&N Drop-Ins, GTR Start Button

05-31-2015, 01:42 PM	#12 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 11	To be honest. I hated it.... lol All the bending over the trunk killed my back... axmea? likes this. Last edited by Redmann1d2n; 06-13-2015 at 07:26 PM.

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05-31-2015, 03:39 PM	#14 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 11	Yeap now I gotta do my F-150. Going to wait a few weeks. I need to buy an amp for that. I might stick with the PDXv9 since that over powers my 8 type r. Got 2 JL 10s for that.

05-31-2015, 04:26 PM	#15 (permalink)
jburch Base Member Join Date: May 2015 Location: Nashville, TN Posts: 79 Drives: MB 370z, 6.0L 240sx Rep Power: 10	this is awesome. was it hard to do? this would be something id love to try to do.