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[MIKE DUBOIS]

Ah!! The Sub’s. Cool!

515 b recones
Thanks again
Bobhorn

 

[MIKE DUBOIS]

? - Are they crossing the woofer over at 350hz? It’s sweet spot is 1300khz.

The mod to the Z19, was to replace the 2.9mH coil with a 6mH, and the 21uf cap with a 10uf, on the bass section. That works great with the 16 ohm 515.

Otherwise, the high section is as Zilch specified it.

Regards,
Gordon.

 

[GordonW]

? - Are they crossing the woofer over at 350hz? It’s sweet spot is 1300khz.

The electrical and acoustic crossover points are not the same.

Due to impedance changes (rise in impedance with increasing frequency), and rising frequency response, what would be a lower-frequency crossover actually ACTS like about a 1.2KHz crossover point, with the 416 and 515.

Regards,
Gordon.

 

[MIKE DUBOIS]

HI..

Sorry I missed your question. Busy weekend.

You are correct the acoustic and eletrical points are not the same. Clearly.

Both the 416 and the 515 are pretty much flat up to 1000hz +\-

That being said it, overall, it would depend on the cabinet, having an effect on the impedance. At 1000hz that would be approx. 8 to 10 ohms.

PS: I would advise an average of 1300hz to cross over. Others have normally used 1200hz.


mD