Why not???

[afrakes]

Maybe somebody here can help me expand my car audio knowledge. I'm just curious as to why I don't see more recommendations for subs like the Dayton Audio Ultimax when somebody is looking for crushing lows and doesn't know where to start. Found here: http://www.parts-express.com/dayton-audio-um15-22-15-ultimax-dvc-subwoofer-2-ohms-per-coil--295-514 .

This thing is sexy and from what I understand (correct me if I'm wrong) this beast is designed to play into the 18-20 hz range no problem. Do people not recommend these subs because of their price:power handling ratio? Or is it something else?

Side note here, recommended box size ported (15") is 6.1-10.6 cubes net tuned to 18 hz?!?! does this effect the ability for the driver to play into the 40's and still perform well while doing so?

Any input would be great, these subs just look amazing and are one of the few home audio based subs that i have personally seen in a D2 model. I want one. Is it worth is? Think it could handle 1200 rms??

[Joe X]

6-11 cubes net for a 15" pretty much tells the story.

[Kevin M]

Ihere is a lot of fanboys. Not everybody is like this but we all have preferences. I run Dayton and have for a couple years.

[Guest]

6-11 cubes net for a 15" pretty much tells the story.

specifications says 6-11 but description says

Sealed 3.1 cubic ft. (net internal) with 3 lbs. of Acousta-Stuf polyfill, f3 of 35 Hz with a 0.707 Qtc alignment

Vented 6.0 cubic ft. (net internal, not including driver or port volume) with 6 lbs. of Acousta-Stuf tuned to 18 Hz with two 4" diameter by 26" long flared ports for an f3 of 22 Hz. Larger cabinets and lower tuning frequencies are possible.

[afrakes]

What's the difference between Fs, F3, and tuning? And can that driver still perform well in the higher notes? Sorry, I'm not too experienced with sub specs and knowing what they all mean. I understand how to tune and what it does, but how does the Fs and F3 effect all of this???

[bkolfo4]

Keep in mind those recommended enclosure sizes are for maximum flat response in a home environment.

Enclosure can be WAY smaller in a car.

I use a lot Dayton drivers in installs. They are even nicer when you purchase them on a wholesale account!

[Omega5002]

You have to realize that the driver itself and the recommendations leans to Home Audio or Home Theater, which is why they say do 6 cubes tuned to 18hz, you don't have to do that in a car to play music, you can build the box to be 3.5-4.0 cubes tuned in the low 30's, and have it be musical.

Reason they say to do 6 cubes is to get the f3 low enough to play the teens

[Joe X]

What's the difference between Fs, F3, and tuning? And can that driver still perform well in the higher notes? Sorry, I'm not too experienced with sub specs and knowing what they all mean. I understand how to tune and what it does, but how does the Fs and F3 effect all of this???

To use a sub designed for a different application you will have to ride on your own specs and come up with something unintended by the manufacturer that you will hopefully like.. so basically.. you are on your own, if you are comfortable with that then you go ahead but I am guessing not everyone is.

F3 as calculated by traditional methods don't work inside a vehicle due to cabin gain and likely you can measure it but hardly calculate it with much accuracy, what usually occurs is that F3 will be much lower than predicted. Fs is one of the T/S parameters and by itself is insufficient to determine the behavior of the sub, you have to enter the full model to see what to expect.