I have 2 PG X-max 12"s currently in custom ported boxes. The boxes are too big to fit in my new car and i kinda wanted to switch to sealed boxes. Anyone have any suggestions for the best dimensions? Also, which way should i face the speakers in the trunk, towards the seats or back?
This board has been very helpful for me, thanks everyone for your help.
JD
Replies (6)
ttocs on 05/22/2003 15:30:04
glad to help. what kind of car is it going in. If I remember correctly(its been a few years) the x-max's 12's can go in as little as .75 cu ft.
Whe cannot really just give you the demensions. You need to give us a few. If you know where your box is going to go, measure what you do know. IF you know how far across the box can go, and know how high it can go, then you just need to find the depth. this is done easily with algebra. Yes, you never thought it had a real world use huh!
Swez on 05/22/2003 20:38:43
Do you have a website link for those subs? I can check on that and get back to you about the proper sealed enclosure size needed.
Also, what type of music do you listen to most? See, most 12's will do ok in 0.75 -1.50 cf (internal) per sub. But I would prefer to see the manufacturer's specs, before making a specific recommendation.
Swez
dirtyknight71 on 05/23/2003 10:37:12
The speakers are Phoenix Gold X-Max 12"s. I bought them about 6 years ago. I believe the website is www.phoenixgold.com.
I've migrated away from rap and am more into rock these days, though sometimes i go through spurts of country and techno. I figure a sealed box would be better for this type of music, is that right?
I have a 99 Pontiac Grand Prix GTP and the amp driving them is a phoenix gold zx500.
jd
Swez on 05/23/2003 18:52:14
Nice ride that GTP...
Sealed, your probably looking at 1.25-1.50 cf per sub. (internal) These are older subs, so specs on website are difficult to find.
Basically, the smaller the box... 0.75 cf/sub, will net punchy upper bass frequencies (50 - 80 Hz.) If you like deep low that Country and some Rock, R&B and Jazz offer, go with 1.25 cf/sub. This is a good all around performer size for most 12's.
If you like RAP and lots of deep, low bass, 1.5 cf per sub sealed, will net good results... but power handling drops a bit as the box gets larger.
I looked for that amp as well on PG site... must be an older unit? What are the power specs on that amp? If you don't know, just state the fuse ratings and how many channels this amp has... we can come up with a close RMS power number off that detail.
Swez
dirtyknight71 on 05/24/2003 12:35:35
Check this site i found:
http://www.rkst.com/phoenixamps.htm
Now, when i make the box, should each sub have it's own compartment? Or just a big box with each sub in it. Also i'm wondering which way to face the subs.
jd
Swez on 05/24/2003 12:59:21
When making a box, is best to have a divider panel to separate each sub in its' own compartment.
As far as direction, most sedans and hatchbacks sound best with the sub box resting against the rear seats and the subs pointing to the rea bumper.
A little experimention is possible, but with a smaller trunk and a large box (~4.0 cf externally) there may be few options available. Just remember that your subs are 12" OD, so you will need a face panel height of ~14" min. The rest is just doing the math... H x W x D where "H" is pretty much fixed by sub diameter. "W & D" are the key variables.
If you need some additional input on box calculations, just ask... but provide the dimensional max of your trunk space.... take into account and low hangin rear speakers, hardware and wheel wells etc.
Swez
PS If this site is helping you out and saving you some money too... care to toss some loose change in the donation pot? Want to keep this site going as finances permit... We lost the site for several months due to lack of contributions... so even a little $ will help lots. Thanks!
This board has been very helpful for me, thanks everyone for your help.
JD
Replies (6)
ttocs on 05/22/2003 15:30:04
glad to help. what kind of car is it going in. If I remember correctly(its been a few years) the x-max's 12's can go in as little as .75 cu ft.
Whe cannot really just give you the demensions. You need to give us a few. If you know where your box is going to go, measure what you do know. IF you know how far across the box can go, and know how high it can go, then you just need to find the depth. this is done easily with algebra. Yes, you never thought it had a real world use huh!
Swez on 05/22/2003 20:38:43
Do you have a website link for those subs? I can check on that and get back to you about the proper sealed enclosure size needed.
Also, what type of music do you listen to most? See, most 12's will do ok in 0.75 -1.50 cf (internal) per sub. But I would prefer to see the manufacturer's specs, before making a specific recommendation.
Swez
dirtyknight71 on 05/23/2003 10:37:12
The speakers are Phoenix Gold X-Max 12"s. I bought them about 6 years ago. I believe the website is www.phoenixgold.com.
I've migrated away from rap and am more into rock these days, though sometimes i go through spurts of country and techno. I figure a sealed box would be better for this type of music, is that right?
I have a 99 Pontiac Grand Prix GTP and the amp driving them is a phoenix gold zx500.
jd
Swez on 05/23/2003 18:52:14
Nice ride that GTP...
Sealed, your probably looking at 1.25-1.50 cf per sub. (internal) These are older subs, so specs on website are difficult to find.
Basically, the smaller the box... 0.75 cf/sub, will net punchy upper bass frequencies (50 - 80 Hz.) If you like deep low that Country and some Rock, R&B and Jazz offer, go with 1.25 cf/sub. This is a good all around performer size for most 12's.
If you like RAP and lots of deep, low bass, 1.5 cf per sub sealed, will net good results... but power handling drops a bit as the box gets larger.
I looked for that amp as well on PG site... must be an older unit? What are the power specs on that amp? If you don't know, just state the fuse ratings and how many channels this amp has... we can come up with a close RMS power number off that detail.
Swez
dirtyknight71 on 05/24/2003 12:35:35
Check this site i found:
http://www.rkst.com/phoenixamps.htm
Now, when i make the box, should each sub have it's own compartment? Or just a big box with each sub in it. Also i'm wondering which way to face the subs.
jd
Swez on 05/24/2003 12:59:21
When making a box, is best to have a divider panel to separate each sub in its' own compartment.
As far as direction, most sedans and hatchbacks sound best with the sub box resting against the rear seats and the subs pointing to the rea bumper.
A little experimention is possible, but with a smaller trunk and a large box (~4.0 cf externally) there may be few options available. Just remember that your subs are 12" OD, so you will need a face panel height of ~14" min. The rest is just doing the math... H x W x D where "H" is pretty much fixed by sub diameter. "W & D" are the key variables.
If you need some additional input on box calculations, just ask... but provide the dimensional max of your trunk space.... take into account and low hangin rear speakers, hardware and wheel wells etc.
Swez
PS If this site is helping you out and saving you some money too... care to toss some loose change in the donation pot? Want to keep this site going as finances permit... We lost the site for several months due to lack of contributions... so even a little $ will help lots. Thanks!
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