Small sealed box RF power hx2 15

[Dictator 39]

Been looking into 15" driver's that work really well in small sealed enclosures 2cubes and below.

 

The old power series of Rockford fosgate hx2 caught my attention with the recommended size of 1.25 sealed for a 15(before sub displacement). Is that correct does the driver hit a low enough frequency response in that recommended size of box?

 

Just had the rf,dc lvl3,dayton ho on my list of drivers....Is this worth my time looking at a older style driver?

 

 

[95Honda 486]

What are the T/S parameters of the sub?  Only way to know really...

[Dictator 39]

Ill get those real quick.

[lithium 358]

model it and find out. 

 

what kind of vehicle is this going in? i would consider if you're worried about box size and low end extension then i think infinite baffle would be the way to go assuming you drive a sedan. 

[Dictator 39]

FS:22hz

QTS:  0.388

VAS(FT3: 4.45

VAS(LITERS): 126

Xmax(In): 0.74

Sensitivety(db@1/1w):87.5

rms:1000rms/2000watts

Speaker displacement: 0.19

[Dictator 39]

This is going in the wagon..im down grading from the zcons. sedan is still running sa-8's v1

plenty of space 12cubes..to be exact

Edited January 13, 2014 by Dictator

[Thumpper 266]

the HX2 series woofers from RF were awesome woofers

 

I had a pair of 12" Power HX2 's in a Mazda Hatch back

and I could damn near levitate the car on 15hz.....

 

the FS of the 12" Power HX2 was around 27hz......

 

the Punch HX2 dropped decent as well

Edited January 13, 2014 by Thumpper

[Dictator 39]

they seem like quality drivers just not a lot of info on them..and most of the topics I read on the Rockford fosgates seem like inexperienced people talking negative or positive.

Edited January 13, 2014 by Dictator

[95Honda 486]

I don't have my modeling software here, but judging by the Vas of the driver, I would be will to bet that 1.25ft^3 would be on the small side.  A lot of car audio manufacturers recommend sealed alignments with higher total Q's (like above 1) because the bump in upper end response gives it a "Punchy" sound...  Rockford probably did the same thing.

 

I'd go out on a limb to say if you build the right size box to be the flattest and give the lowest Fc, it will probably be upwards of 2ft^3+....

 

Model and see for yourself...

[Dictator 39]

kk I will.

[Dictator 39]

I was using winisd 2.5cubes was the best enclosure it worked in..after that no increase in output.

 

What driver would you recommend for a good flat response in a small sealed box 15?

Edited January 13, 2014 by Dictator

[95Honda 486]

Any of the SSA or FI (especially the high Qts FI Q) woofers meant for a sealed box would be great. 

 

I do think the best deal around right now for sealed box woofers would be the 12" or 15" Ultimax woofers from Parts Express...  Just my opinion though...  They are $179 and $199, respectively.  12 in a 2ft^3 box and the 15 in a 3ft^3 box will net you sealed F3's around 35Hz, that is LOW for sealed, you would get a serious bottom end...

[95Honda 486]

Hell, if you don't mind a cube box Parts Express has a CNC cut, heavily braced MDF cabinet kit for the 12" version in a kit discount price...

[lithium 358]

15" package http://www.parts-express.com/dayton-audio-15-ultimax-subwoofer-and-cabinet-package--300-7097

 

12" package http://www.parts-express.com/dayton-audio-12-ultimax-subwoofer-and-cabinet-package--300-7096

[Dictator 39]

I was looking at dayton ultimax and ho hardcore. Looks like a good option but im building the box myself. Lot cheaper.

I would love a pair of fi q's just cant find a pair priced right used ;((

[95Honda 486]

Thanks.  I can't paste in links and the "link" link just times out, think I have compatibility issues...

[Dictator 39]

What im learning high qts is most important factor for a sealed setup. Guess you cant get fantastic low end from a small sealed enclosure.

[95Honda 486]

Yes, it is important.  It isn't the only spec though...

[Dictator 39]

Qts, xmax?

[lithium 358]

small box, low end extension, efficiency 

 

you can only pick 2. 

[Dictator 39]

Gotcha well im going spare more room. Anybody have any pair of ssa 15inch drivers that they wanna part with? Not nib!!

Edited January 14, 2014 by Dictator