Installed custom 8" sub box

Redmann1d2n · 06-13-2015, 01:21 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, 01:33 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, 05:36 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, 05:41 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, 06:10 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

YzGyz · 06-16-2015, 06:51 PM

Quote:

Originally Posted by Redmann1d2n

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

The Box should be a solid sealed box with correct cu ft space inside (if your box is designed to be sealed and not a bandpass or ported, each enclosure type has there own specs to follow for best performance). You should try and get it as close to the manufacture's specs as possible. A great speaker will sound like crap in a junk box. You can add some pillow stuffing in the box to slow the air and change the sound some. I never heard of putting sound deadener in a sub enclosure.

YzGyz

Redmann1d2n · 06-20-2015, 02:55 PM

ok back to work

Redmann1d2n · 07-11-2015, 08:49 PM

finally done. This was trial and error. Glad I have a table saw that does angles...SPEAKER BOX.jpg

Redmann1d2n · 07-11-2015, 08:52 PM

i have the top off so people can see what it looked like. Sloppy sealing but I built it in the car. It would be a bugger to remove. Now I am going to go rest. My hamstrings are cramping up.....

SwissCheese · 11-08-2015, 12:30 AM

So for those that mounted subs in this space, where did you mount the amp(s)?

beemerkid · 05-24-2016, 02:57 AM

Quote:

Originally Posted by SwissCheese

So for those that mounted subs in this space, where did you mount the amp(s)?

I mounted mine under the passenger seat and ran the wiring up under the panel under the rear speaker, right next to the outside of the car. I just poked it up there and shoved it around until it came out the other side into the trunk.

solo413 · 05-25-2016, 06:13 AM

This is an awesome post as I was thinking about doing this as well!!! Thank you for this info

JRibbs09 · 04-04-2022, 02:25 PM

So its been years...hopefully by now someone has perfected this style of sub box...right?

Would love to have one of these.

JRibbs09 · 04-04-2022, 02:26 PM

Quote:

Originally Posted by Dsevast

Hey guys sorry I have been MIA for quite a while. I have the Z out for the summer so if anyone has questions I can answer them now. I am hesitant on getting dimensions since it is a PITA to get the box out. I suppose on my next day off I could measure for everyone. Let me know.

I know it's been a while, but do you still have this setup? If so, ever get around to dimensions or specs?

johnxxx · 04-04-2022, 09:40 PM

Quote:

Originally Posted by JRibbs09

I know it's been a while, but do you still have this setup? If so, ever get around to dimensions or specs?

I know you know you’re responding to an old post but you might not realize you’re asking a question to someone who hasn’t been active for 5 years. If you click on their name you can see this for yourself…just trying to be helpful as I know your new around here. Cheers!

Sent from my iPhone using Tapatalk

11-08-2015, 12:30 AM	#70 (permalink)
SwissCheese Track Member Join Date: Aug 2013 Location: Iowa Posts: 785 Drives: 2012 370Z NISMO Rep Power: 67	So for those that mounted subs in this space, where did you mount the amp(s)? __________________ 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

04-04-2022, 02:25 PM	#73 (permalink)
JRibbs09 Base Member Join Date: Sep 2014 Location: Pennsylvania Posts: 13 Drives: 2010 Nissan 370z Rep Power: 11	Thread revival So its been years...hopefully by now someone has perfected this style of sub box...right? Would love to have one of these.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Installed custom painted monterey nismo spoiler	TPrelude-370z	Exterior & Interior	7	02-25-2013 10:40 PM
WORK Meister S1 3 Piece - 19x11.0 (4.3" lip) - 19x12.5 (4.8" Lip) ** Custom GM color	RavSpec	Wheels & Tires	21	11-22-2011 10:08 PM
Custom NAVI installed in Cubby on 2011	FLORIDA370Z	Exterior & Interior	14	08-15-2011 10:42 AM
CUSTOM SxExCx Tank Installed!!!	CERBERUSlucid	Engine & Drivetrain	2	11-29-2010 05:52 PM
New Custom HKS exhaust installed	370zTwinTurbo	Intake/Exhaust	20	03-22-2010 09:08 AM

06-20-2015, 02:55 PM	#67 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 11	ok back to work

07-11-2015, 08:49 PM	#68 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 11	finally done. This was trial and error. Glad I have a table saw that does angles...SPEAKER BOX.jpg

07-11-2015, 08:52 PM	#69 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 11	i have the top off so people can see what it looked like. Sloppy sealing but I built it in the car. It would be a bugger to remove. Now I am going to go rest. My hamstrings are cramping up.....

05-25-2016, 06:13 AM	#72 (permalink)
solo413 Base Member Join Date: May 2016 Location: bear, DE Posts: 107 Drives: 13 370z pearl manual Rep Power: 43	This is an awesome post as I was thinking about doing this as well!!! Thank you for this info