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Box for a sp4 15


Lakeshow94

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Looking at doing a sp4 15 in the camry now. What would you guys recommend for the size of the box? Fi recommends 3-5..... I was thinking somewhere around 4.25 cubic feet. Disregarding space would there be a reason not to go bigger (obviously not so huge that the woofer would bottom out). I'll be running it on a zapco z-3kd.

1999 Lexus GS 300

Pioneer DEH-80PRS

Singer 240 Amp (Will be installed later)

Northstar Group 31 & 24

Sundown SCV-4000

Rockford T400-4

2 12" CT Sound Meso

CT Sounds 6.5 Meso Components

CT Sounds Tropo 6.5

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Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

Yea I planned on tuning around 29-31 hz. Would there be a benefit of making the box 4 cubic feet vs 5?

1999 Lexus GS 300

Pioneer DEH-80PRS

Singer 240 Amp (Will be installed later)

Northstar Group 31 & 24

Sundown SCV-4000

Rockford T400-4

2 12" CT Sound Meso

CT Sounds 6.5 Meso Components

CT Sounds Tropo 6.5

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Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

^^^^^^ i dont know that amp, nor the power, but, it will dig down, and sound good doing it, with "low" power, in a decent box.

Man i loved my sp4s, .. wish i just kept em... :(

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Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

^^^^^^ i dont know that amp, nor the power, but, it will dig down, and sound good doing it, with "low" power, in a decent box.

Man i loved my sp4s, .. wish i just kept em... :(

the z-3kd is 3000 rms true power

1999 Lexus GS 300

Pioneer DEH-80PRS

Singer 240 Amp (Will be installed later)

Northstar Group 31 & 24

Sundown SCV-4000

Rockford T400-4

2 12" CT Sound Meso

CT Sounds 6.5 Meso Components

CT Sounds Tropo 6.5

Link to comment
Share on other sites

Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

^^^^^^ i dont know that amp, nor the power, but, it will dig down, and sound good doing it, with "low" power, in a decent box.

Man i loved my sp4s, .. wish i just kept em... :(

the z-3kd is 3000 rms true power

Had a dc 10k on 4. So around 2k legit on each, and i loved it. Added power, 2 6500s, got louder, and they took it fine. Added more, 4- 6500s, (wired up) One per,

and lost some spider joints. No coil failure. Dropped back to 4 3800's,...(one per) They still played for this entire season, until i sold them. Even just a few months ago doing a 51.3 at 28hz for 30 second average, on the dash, one door wide open, for fun That score is in TERM PRO, and certified. A recorded 55.9 at 36 legal. With the rear glue joints split. God i loved those subs.

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Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

^^^^^^ i dont know that amp, nor the power, but, it will dig down, and sound good doing it, with "low" power, in a decent box.

Man i loved my sp4s, .. wish i just kept em... :(

the z-3kd is 3000 rms true power

Had a dc 10k on 4. So around 2k legit on each, and i loved it. Added power, 2 6500s, got louder, and they took it fine. Added more, 4- 6500s, (wired up) One per,

and lost some spider joints. No coil failure. Dropped back to 4 3800's,...(one per) They still played for this entire season, until i sold them. Even just a few months ago doing a 51.3 at 28hz for 30 second average, sealed on the dash. A recorded 55.9 at 36 legal. With the rear glue joints split. God i loved those subs.

they sound like monsters! I wish my car electrical could handle 5-6k. the biggest alt I could fit was a 160-180. I didn't want to do much modification, just wanted a singer drop in. 3k should do well on one though. how much airspace did each speaker have? port area?

1999 Lexus GS 300

Pioneer DEH-80PRS

Singer 240 Amp (Will be installed later)

Northstar Group 31 & 24

Sundown SCV-4000

Rockford T400-4

2 12" CT Sound Meso

CT Sounds 6.5 Meso Components

CT Sounds Tropo 6.5

Link to comment
Share on other sites

Depends on what you want, if you are looking for raw output just do the 5 net if you can fit, tune low for SP4s.

^^^^^^ i dont know that amp, nor the power, but, it will dig down, and sound good doing it, with "low" power, in a decent box.

Man i loved my sp4s, .. wish i just kept em... :(

the z-3kd is 3000 rms true power

Had a dc 10k on 4. So around 2k legit on each, and i loved it. Added power, 2 6500s, got louder, and they took it fine. Added more, 4- 6500s, (wired up) One per,

and lost some spider joints. No coil failure. Dropped back to 4 3800's,...(one per) They still played for this entire season, until i sold them. Even just a few months ago doing a 51.3 at 28hz for 30 second average, sealed on the dash. A recorded 55.9 at 36 legal. With the rear glue joints split. God i loved those subs.

they sound like monsters! I wish my car electrical could handle 5-6k. the biggest alt I could fit was a 160-180. I didn't want to do much modification, just wanted a singer drop in. 3k should do well on one though. how much airspace did each speaker have? port area?

im over on space, and WAY under on port :(

Dont listen to me, spite the fact that driver has been the fav ive ever ran ........

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