GPA 416-8C or 515-C in ported box?

[Barossi]

Hi,
i am thinking about building a ported box with either the actual GPA 416-8C
http://www.greatplainsaudio.com/downloads/416_8C.pdf

or the actual GPA 515-C
http://www.greatplainsaudio.com/downloads/515_C.pdf

I will use them in a 2-way setup with x-over @~700Hz.

Does anyone have some experiences with those new woofers?
How reliable are the T/S parameters?


Kind Regards
Barossi

[Earl K]

Not me , but Stephane Rame has some experience with the 515-8C here ! ;

[GM]

Can only comment about the GPA 515-8G's measured specs sent to me, which so far has been as good or slightly better overall than published.............

GM

[GM]

I don't see where he actually tells us anything useful WRT its specs, performance.

GM

[Barossi]

i did not saw any measurements on:

http://www.greatplainsaudio.com/downloads/416_8C.pdf

or the actual GPA 515-C
http://www.greatplainsaudio.com/downloads/515_C.pdf

Kind Regards

Barossi

[stéphane Rame]

Hello,
after sound test in box Onken 360 between the model "G" and the model "C", I have chosen the model "C".
Onken 360 (GPA 515-8C) + JBL 3732M/HF + JBL 2402h

I also have box model with "G"
My new Loudspeaker Systems ? Great Plains audio

St?phane

[GM]

Seems reasonable, the 360 is much too big and tuned too low for a 'G'.

GM

[Barossi]

Hello,
nobody uses the actual GPA 416-8C ferrit woofer?

Kind Regards
Barossi