[What is the Fc of the Klipsch K-402 horn?]

Hi Chis,

 

Thanks a lot!

 

Best regards

Peter

[What is the Fc of the Klipsch K-402 horn?]

Hi,

 

Could someone please tell what the Fc is of the Klipsch K-402 horn?

 

Thanks a lot!

 

Best regards

Peter

[Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage]

10 hours ago, Chris A said:

It looks to me that the lowering of the crossover point for a stack of four AMT-1s would be fairly marginal beyond what a two-high stack can do, but there would probably be another 50-100 Hz lowering of the -3 dB low frequency raw response point.  The difference in low frequency cutoff point between a single AMT-1 and a stacked/winged (7") dual AMT-1 array is about a 130 Hz depression of the -3 db cutoff point (~585 Hz --> 450 Hz). 

 

Note that some EQ is required to flatten the natural tendency of the AMT-1's slightly rising response vs. frequency, so the relative depression of the -3 dB cutoff point is based on the low frequency response only, not the higher frequency response.  Moreover, it is important to note that the wings do help to depress the cutoff point a bit more than 50% of the difference from the single/non-winged configuration (indigo = winged, blue-green = no wings):

 

 

Chris

Hi Chris,

 

Thanks a lot for a detailed reply, I really appreciate it!

 

Best regards

Peter

[Double Stack ESS AMT-1 with Wings--Possible Kit for Heritage]

Hi,

 

I have read through this thread with great interest! I already have a pair of driver using the AMT concept (Beyma TPL150H) and I like them a lot, but unfortunately the Beymas  cannot be used below app. 1,500 Hz, and stacked, original AMTs may be the way to go!

 

BUT I cannot help asking: If two stacked (and horn loaded) AMTs are excellent, then what about 4 stacked AMTs per side? Obviously, power handling/sensitivity and max SPL would be improved, but maybe more importantly: Would 4 stacked AMTs lower the crossover point - and if yes, then how far down?

 

I would really appreciate your thoughts on this (pros/cons? - besides being more expensive for sure!), and in case anyone buying 4 AMTs tried this, I would very much like to hear your experiences!

 

PS: I think Pete H already stated the question, but I do not think it received any answer (or I may have overlooked it)!

 

Thanks!

 

Best regards

Peter