Car Audio Central - Ultimate Car Audio Forum and Community

like william said, the only way to know is build and test. the car itself that the sub is going to be in is also going to affect the spl. i dont think anyone can just give you a straight number. a guess perhaps....

[quote="William from NOLA"]The 1w/m measurement is constant. It's not going to change at different frequencies.

If you are looking for an SPL measurement, the only way to get it is to build and test. No other way.[/quote]

Ok..here exactly what I am looking for. I would like to know the SPL for the given frequencies with 400 watts of power in a 3 cu.ft. sealed enclosure.

Diamond Audio lists specs for their subwoofers of the information that I am looking for. I was curious if there was information from Rockford on their subwoofers. I wanted to compare a 10" Diamond D9 in a 1.5 cu.ft. ported enclosure with 600 watts to the RFD-2115 in a sealed 3 cu.ft. enclosure with 400 watts

Rich

The 1w/m measurement is constant. It's not going to change at different frequencies.

If you are looking for an SPL measurement, the only way to get it is to build and test. No other way.

I would like to know what the 1w/1m db specs are for the HX2 RFD-2115 in a 3 cu.ft. sealed enclosure is at the following frequencies:

20hz
30hz
40hz
50hz
60hz
70hz
80hz

The sub will be getting around 575 watts total (not per coil).

Thank you in advance.

Rich