[SteveCallas]

The parameters for a good driver suited to horn use are different than the parameters for a good driver suited to LLT use. Horns have huge displacement, it's just the driver that is used in the horn that doesn't have large displacement.

I've yet to see a horn subwoofer design that offers a better balance of performance than a good LLT dollar for dollar.

 

[SteveCallas]

Has it been measured?

 

[SteveCallas]

I just looked over that thread and a few things stand out to me.

1) This guy was apparently lacking output from the LLT to begin with. I can't say that is normal - most don't approach the limits of a high excursion 18" LLT....about 115db in room down to the low teens.

2) If he was lacking output to begin with and getting compression, then a sub that has more headroom in the 25hz+ department will sound better. That seems to be what happened.

3) There is simply no way the horn digs anywhere near as deep as the LLT, not by a longshot, not even close. His in room measurement that goes down to 2hz is not legit, he must have improper mic calibration settings. That horn subwoofer enclosure is a mere fraction of the size it would need to be to dig as deep as his LLT.


I maintain my point that a LLT offers better balanced performance for the dollar than a horn sub.

 

[SteveCallas]

What mic and calibration file are you using? A horn subwoofer would have to be larger than even a large LLT to achieve similar low end linearity, let alone linearity down into the single digits. That response simply isn't possible unless you are using heavy EQ, which I don't believe you are.

Try reducing your spl and frequency scale, it may be hiding a lot of the story. Try a scale of 65db - 115db and 10-100hz.