Beyma 15XA38Nd network

[hifisucks]

Hello, I am planning to build my last speakers hahaha
Does someone know the crossover design for this coax?
Ready built from Beyma for 60€ each...
I am building a Tannoy-GRF-R like enclosure...

 

[Lojzek]

Hi, a project as grand as this one deserves proper measurements, then simulating, don't you think so?
What is the name of the Beyma filter you had in mind? Aren't these simple calculator based only?

 

[hifisucks]

Thanks! I GOT IT!

 

[Lojzek]

A natural course of action is like this, find a measuring program to produce impedance (TSP) and FR plots. Then base your enclosure tuning in accordance with measured TSP. Afterwards, build the enclosure as if it were a final iteration, then put the unit and measure again impedance and FR. These files would have all the information needed to feed the crossover simulator and then approach to designing a filter. Is this something you can visualize yourself doing? It is not hard, really.

 

[hifisucks]

Hi Lojzek, I am not capable of measuring and tuning... except maybe with my ears
But I love to work with transducers... made some experiances with fullrange... there you dont need crossovers
Here is a scetch of my idea... ca. 1000mm high, 500mm wide and 460 deep

 

[Lojzek]

Could be someone else will chime in and help you with this project of yours. I am kind of swamped right now.

 

[hifisucks]

Hi, Anyone thoughts about my design of enclosure and crossover?
I think this will do it...
I do have a question about the crossover.
Should the tweeter attentuator resistor be up front or behind the zobel?

 

[nesha]

Try ro simulate your design in Hornresp...
Hornresp

 

[hifisucks]

I have a mac...
Program wont work on my mac...

 

[hifisucks]

Found this mh-audio.nl - Calculations

 

[hifisucks]

An externally hosted image should be here but it was not working when we last tested it.

Crossover

 

[hifisucks]

Crossover...index — ImgBB

 

[celef]

based on the responses in the datasheet, that crossover appear to give an upward tilted frequency response with no compensation for baffle step, so the speakers may not sound neutral

https://www.beyma.com/speakers/Fichas_Tecnicas/beyma-speakers-data-sheet-coaxial-15XA38Nd.pdf