FI SP4 Sealed?

[AndrewHD 10+ year member]

Hello guys, I'm ready to upgrade from my Sundown SA-12's and am looking at the FI SP4. Do they beat hard in sealed boxes and is their SQ similar to FI Q's?

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[RicksI30 10+ year member]

What are you looking for when you upgrade? The Sp4 should do very well sealed.

 

[AndrewHD 10+ year member]

Looking to run a sealed 15 or even 2. I have a Rockford 2500bd-cp so I'm thinking that would only be enough power to run one. Would running 2 SP4's sealed on this power be ok?

 

[SounDrive Pro Seller]

No need to run a 4 inch coil woofer on 2500w... A 3" coil woofer would be more efficient on that power

 

[AndrewHD 10+ year member]

No need to run a 4 inch coil woofer on 2500w... A 3" coil woofer would be more efficient on that power

Yea that's what I am thinking. I was going to go with either 2 15 FI Q's sealed, 2 LMS-R 15's sealed or a single SP4

 

[SounDrive Pro Seller]

Yea that's what I am thinking. I was going to go with either 2 15 FI Q's sealed, 2 LMS-R 15's sealed or a single SP4

Have you considered going ported? A properly designed (and modeled if you want to go the extra mile) enclosure will have a very flat response and give greater output.

 

[AndrewHD 10+ year member]

Yes I have had several ported enclosures in the past but most of them blocked my access to the spare tire. I need trunk space more than audio also so this is another reason. Before I had 2 FI Q 15's sealed and still had plenty of room. I may just go back to the FI Q 15's with high qts.

 

[Silverado SS 10+ year member]

Yes I have had several ported enclosures in the past but most of them blocked my access to the spare tire. I need trunk space more than audio also so this is another reason. Before I had 2 FI Q 15's sealed and still had plenty of room. I may just go back to the FI Q 15's with high qts.

2 15" Qs will take up more space than a single sp4 ported

 

[Buck 5,000+ posts]

Do 2 12's ported.