Possibly need a 18" sub for project.

[45js45 10+ year member]

We are looking for a 18" sub for a 3.5cu ft box.Would like to stay under $300 for sub.Will be powered by PPI A600 600 watt @ 4ohm.Trying to keep costs down for the build.

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[45js45 10+ year member]

I know this is a stretch.....told him he may have to go with a 15.

 

[dbeez 5,000+ posts]

3.5 he needs a 15 not enough airspace even for an 18 that likes small boxes I do have an ssd motor I could sell or build to a 15 for him.

 

[Phoenix Risen 10+ year member]

yea, go with a 15. could possibly go with a lethal injection. but the option from dbeez would be a good way to go as well.

 

[Liquid Bass 10+ year member]

you could try and find a mach 5 audio MJ 18, they are rated @600 and can take 1k. i had one and you could maybe get by with 3.5 sealed but 4 would be better.

 

[RAM_Designs 5,000+ posts]

I'd definitely go with a 15 in a proper box than an 18 in a box that's choking it. I'm assuming you have enough room for a 3.5ft^3 ported box after displacement...or is this for a sealed box?

 

[Liquid Bass 10+ year member]

I'd definitely go with a 15 in a proper box than an 18 in a box that's choking it. I'm assuming you have enough room for a 3.5ft^3 ported box after displacement...or is this for a sealed box?

That wouldn't be choking the mj18 they work well in 2.5+ it's just not IDEAL

 

[RAM_Designs 5,000+ posts]

That wouldn't be choking the mj18 they work well in 2.5+ it's just not IDEAL

I'm assuming this is for a ported setup. If it is sealed, then there are several 18's that should work ok in that size box, the MJ included...very nice woofer for $100-120.

 

[SWFL 10+ year member]

I got a pair of chaos 15's dual 2ohm 800rms will handle 1200 with ease

 

[-01limited- 10+ year member]

ixl>mj

 

[Vossy 10+ year member]

Sounds like you need a 15" for sub project.

 

[Liquid Bass 10+ year member]

I'm assuming this is for a ported setup. If it is sealed, then there are several 18's that should work ok in that size box.

Oh I must have missed that lol.

 

[45js45 10+ year member]

Yes ported.....and we can do up to 4' sealed but was making sure we had plenty of room for port.

 

[72 chevy van 10+ year member]

this sub would work gerat in a 3.5 cu ft sealed box Dayton Audio DCS450-4 18" Classic Subwoofer 4 Ohm | Parts-Express.com

 

[Kyle_Keating 10+ year member]

3.5 ported...

In an 18" format look for a Qts of 0.25 or lower..... good luck with the 300 dollars unless its an entry pro woofer with next to no throw - which may work too.

most of these are about 1 grand. What you're asking for (if done right) is not cheep.

TC Pro 5100 Neo

Sound Stream XXX

Fi BTL (ask for soft spiders)

old school TC-5200 or Eclipse Ti Pro or any 4HP

IA Warden (again, ask soft spiders or the Q will be too high)

custom DC might work too, i think they have some super neo thing too.

B&C SW115 Neo

The second issue is a big enough port... You'll need a huge port and it will have to be long in that size box. Unless its going to stick out of the box a few feet then you probably have to do it with passive radiators.