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

YzGyz · 06-16-2015, 05:51 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, 01:55 PM

ok back to work

Redmann1d2n · 07-11-2015, 07:49 PM

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

Redmann1d2n · 07-11-2015, 07:52 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 · 11-07-2015, 11:30 PM

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

beemerkid · 05-24-2016, 01:57 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, 05:13 AM

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

JRibbs09 · 04-04-2022, 01:25 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, 01:26 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, 08:40 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

11-07-2015, 11:30 PM	#70 (permalink)
SwissCheese Track Member Join Date: Aug 2013 Location: Iowa Posts: 785 Drives: 2012 370Z NISMO Rep Power: 66	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, 01:25 PM	#73 (permalink)
JRibbs09 Base Member Join Date: Sep 2014 Location: Pennsylvania Posts: 13 Drives: 2010 Nissan 370z Rep Power: 10	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.

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06-20-2015, 01:55 PM	#67 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 10	ok back to work

07-11-2015, 07:49 PM	#68 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 10	finally done. This was trial and error. Glad I have a table saw that does angles...SPEAKER BOX.jpg

07-11-2015, 07:52 PM	#69 (permalink)
Redmann1d2n Base Member Join Date: May 2014 Location: Minnesota Posts: 19 Drives: 2014 370z Black Auto Rep Power: 10	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, 05:13 AM	#72 (permalink)
solo413 Base Member Join Date: May 2016 Location: bear, DE Posts: 107 Drives: 13 370z pearl manual Rep Power: 42	This is an awesome post as I was thinking about doing this as well!!! Thank you for this info