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kctess5 19th January 2013 10:48 PM

Horn sensitivity question
 
I am trying to design a horn for a Fostex FE108EZ with hornresp but I am unsure what the sensitivity target should be.

The speakers sensitivity is 90 dB, so should the hornresp horn sensitivity be around that same level 2pi?

I have one designed that looks pretty flat and would work size wise but the simulated sensitivity between 80 and 300 hz is around 102dB. Would this mean that the midbass would be massively louder than the rest of the frequency range, or would adding stuffing etc tame it down a bit?

Thanks!

kctess5 19th January 2013 10:49 PM

BTW it's a back loaded horn, not front

xrk971 19th January 2013 11:03 PM

That's good if the horn bass output is high in the design. It will tend to be lower once in practice and you can always add stuffing to balance. Much better to have too much to start rather than not enough. Post the HR output and plan if you want feedback on the design.

kctess5 19th January 2013 11:08 PM

Will do. Gimme a sec and I can post a couple of iterations

Thanks!

kctess5 19th January 2013 11:18 PM

3 Attachment(s)
Here is the first iteration: the biggest and higest sensitivity of the bunch

kctess5 19th January 2013 11:23 PM

3 Attachment(s)
2nd iteration. Lower sensitivity, a bit more peaky up high, MUCH smaller

kctess5 19th January 2013 11:25 PM

Alright there they are. Which do you think would be easier to tune with some stuffing for a flat response?

I just need to get to 80 Hz so the sub section can take over

GM 20th January 2013 12:19 AM

These do not appear to be horn+driver combined responses, so can't really comment.

GM

kctess5 20th January 2013 12:45 AM

They are not. The results I was getting were pretty unbelievable so I didn't think they were relevant for this kind of design. I'll post them in a second

kctess5 20th January 2013 12:50 AM

Combined Response 1
 
1 Attachment(s)
The first design from above:


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