MCM speaker data

[woody]

Does anyone else here find the speaker data MCM provides shall we say a little questionable? Like this one, a 21" $139 woofer.

 

[DavidL]

Are you talking about the T/S data or the frequency response? It is very well possible that is the measured frequency response on axis. Of course off axis the response is going to do a nosedive considering it is a 21 inch driver. I calculated the driver efficiency as 96.4 dB rather than the specified 99 dB

 

[chrisb]

actually, that's pretty decent extension and relatively benign FR for a driver that size

what exactly is the application, woody?

 

[sreten]

Hi,

It looks very good value for a monster 21" driver but
TBH taking the supplied data seriously is very dubious.

On paper many of the MCM drivers look fantastic.
I'd suggest that is no accident and is not real.
Like Tangbands graphs.

rgds, sreten.