how does one properly model closed back speakers in hornresp ?

[freddi]

I assume a very large back chamber is the way (?)

BETA 10 CBMR-A w. short horn and 24uF highpass

 

[pelanj]

When I want to have a box type modeled correctly in Hornresp, I use the Input Wizard (Help/Input Wizard or F7) - and then I fit in my driver from the database and modify the inputs to taste.

 

[freddi]

I want to know if my method is correct for midrange speakers which have their baskets enclosed and generally, high resonance and qts (qtc) - giving a large rear chamber would have little effect on resonance. Its common to see sealed back midrange speakers with front load horn - waveguide.

 

[David McBean]

I assume a very large back chamber is the way (?)

Hi Fred,

Your assumption is correct. Recommended values to use:

Vrc = 99999
Lrc = 1

Keeping Lrc small means that there won't be any resonance spikes in the response when the 'chamber resonances not masked' option is being used.

Kind regards,

David

 

[pelanj]

Closed back speaker...now I get what you meant by that, sorry.

 

[freddi]

late thanks David - - I'd like to try this driver but have too many toys already

9999 liters worked well enough for this driver - I'm remember to use "99999" in the future