Hidden 12" Sub Installation w/ Pics!
#33
08-27-2009, 06:08 PM
Registered User
First of all, congrats and I am glad you are happy with what you have created.
Unfortunately, unless that subwoofer is designed for an infinite baffle (IB) setup the sound quality and SPL will be subpar at best, terrible at worst.
If I'm not mistaken, that appears to be a Memphis 15-MCP12D4/S4. Those subwoofers are NOT designed to be ran in an IB setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on SQ vs SPL tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended RMS wattage (1/2 -1/4 of RMS). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but I've seen a lot of people ruin their systems by incorrect installs such as this one.
Unfortunately, unless that subwoofer is designed for an infinite baffle (IB) setup the sound quality and SPL will be subpar at best, terrible at worst.
If I'm not mistaken, that appears to be a Memphis 15-MCP12D4/S4. Those subwoofers are NOT designed to be ran in an IB setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on SQ vs SPL tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended RMS wattage (1/2 -1/4 of RMS). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but I've seen a lot of people ruin their systems by incorrect installs such as this one.
#36
09-15-2009, 08:43 PM
first of all, congrats and i am glad you are happy with what you have created.
Unfortunately, unless that subwoofer is designed for an infinite baffle (ib) setup the sound quality and spl will be subpar at best, terrible at worst.
If i'm not mistaken, that appears to be a memphis 15-mcp12d4/s4. Those subwoofers are not designed to be ran in an ib setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on sq vs spl tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended rms wattage (1/2 -1/4 of rms). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but i've seen a lot of people ruin their systems by incorrect installs such as this one.
Unfortunately, unless that subwoofer is designed for an infinite baffle (ib) setup the sound quality and spl will be subpar at best, terrible at worst.
If i'm not mistaken, that appears to be a memphis 15-mcp12d4/s4. Those subwoofers are not designed to be ran in an ib setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on sq vs spl tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended rms wattage (1/2 -1/4 of rms). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but i've seen a lot of people ruin their systems by incorrect installs such as this one.
#38
09-15-2009, 09:46 PM
Registered User
Join Date: Apr 2009
Location: Toronto, Ontario
Posts: 1,025
Likes: 0
Received 0 Likes
on
0 Posts
First of all, congrats and I am glad you are happy with what you have created.
Unfortunately, unless that subwoofer is designed for an infinite baffle (IB) setup the sound quality and SPL will be subpar at best, terrible at worst.
If I'm not mistaken, that appears to be a Memphis 15-MCP12D4/S4. Those subwoofers are NOT designed to be ran in an IB setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on SQ vs SPL tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended RMS wattage (1/2 -1/4 of RMS). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but I've seen a lot of people ruin their systems by incorrect installs such as this one.
Unfortunately, unless that subwoofer is designed for an infinite baffle (IB) setup the sound quality and SPL will be subpar at best, terrible at worst.
If I'm not mistaken, that appears to be a Memphis 15-MCP12D4/S4. Those subwoofers are NOT designed to be ran in an IB setup, they need either a sealed or ported enclosure. What you have is not a ported enclosure, because a ported enclosure actually has a port, and it is also tuned to resonate a specific frequency (usually 28-34hz depending on SQ vs SPL tastes).
Since you do not have a sealed or ported enclosure, you should be running that sub at a wattage much lower then recommended RMS wattage (1/2 -1/4 of RMS). The reason is that since the sub is not in a sealed/ported enclosure, it doesn't have proper back pressure to support the suspension of the subwoofer and there is a very, very good chance that it will fail due to overextention of the voice coil beyond xmax or from spider damage.
The positive thing is that you can always take out what you have created, and make a removable fiberglass enclosure to fit your spare tire. It really isn't that difficult and it will serve as a proper enclosure that will provide an actual sealed environment for your new subwoofer to musically shine (and not be damaged). You can even use the current wood baffle you created as the mount for the subwoofer.
I am not trying to rain on your parade, but I've seen a lot of people ruin their systems by incorrect installs such as this one.
I think this is an excellent idea, you did a great job hiding the sub... just make sure you fix the fine small things and your all set
Also, you should hide the amp, this way you can suprise someone and tell them its factory bass. 
I'm sure this provides much more bass then the POS Bose we have. Good stuff!!!
I think i'll be doing this for my trunk since I want is as clean as possible.
#39
09-16-2009, 11:31 PM
Thread
Thread Starter
Forum
Replies
Last Post
FS[NorEast]: New OEM G35x Compression Rods - Save!!
The Fixer
Steering & Suspension
15
11-01-2015 03:26 PM
AuAltima3.5
Audio/Video/Electronics
4
09-13-2015 11:48 AM
