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Multi-Way Conventional loudspeakers with crossovers

Small La Scala Tutorial for noob
Small La Scala Tutorial for noob
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Old 15th March 2019, 01:03 AM   #61
sumotan is offline sumotan  Indonesia
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Wow very nice .

Hi Fredi
May I ask whatís causing the dip at 400hz ? Is it the design of the bin regardless of woofer used ? As suggested by GM, would adding the corner 45deg wedge at the corner when the horn turns 90 deg towards the exit help flatten the respond somewhat ?

Thank you
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Old 15th March 2019, 04:16 AM   #62
freddi is offline freddi  United States
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Small La Scala Tutorial for noob
I don't think little reflectors would help. Those graphs are power response and the on-axis response will be rising vs the drop in power. I think the flat part of La Scala's path where there's no expansion is the cause of some shelving.

not all is known how something will respond til its built and measured.

with a tiny horn as such, I would push it back into a corner.

I used the "Edgar" sim from the Klipsch forums and not sure if the flat portion would be that long -?

Click the image to open in full size.


Here's the model - I'll have to squint and look at it again


https://community.klipsch.com/upload...9455497062.png

Last edited by freddi; 15th March 2019 at 04:31 AM.
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Old 15th March 2019, 04:39 AM   #63
sumotan is offline sumotan  Indonesia
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Thank you for the enlightement Freddi.
The Bec2Biex looks good. You think it will measure well if we scale down to use with the 10Fw64 ?

Cheers
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Old 15th March 2019, 06:54 AM   #64
freddi is offline freddi  United States
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Small La Scala Tutorial for noob
It might (?) - can you work out its expansion? What kind of amplifier do you intend to use? - its output impedance could matter.
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Old 15th March 2019, 07:00 AM   #65
sumotan is offline sumotan  Indonesia
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I’ve got an Aksa 100 amp, a 30 watt 6Bq5 nfb tube amp & going to build a Pse 300B amp.
I know nuts about horn speakers hence seeking for advice & tuition. This will be my first diy speaker project. Will be a good tutorial for myself.
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Old 15th March 2019, 07:29 AM   #66
freddi is offline freddi  United States
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Small La Scala Tutorial for noob
GM is better at this stuff than myself - but FWIW - here's 10FW64 in a 0.66 scale University Classic, sitting in a corner - it won't be real little nor go deep but probably would be pretty darn loud and clear

I reduced the back chamber in these sims down to a ridiculously low 5 liters so it would handle 40v in its passband without exceeding xmax - that's 135dB without taking in effects of compression.

in a corner, its 50% efficient
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Old 15th March 2019, 07:42 AM   #67
sumotan is offline sumotan  Indonesia
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Thank you again Fredi. I think Microsoft is getting pretty nasty, so many programs including Hornsrep can’t be downloaded to windows 10 software.
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Old 15th March 2019, 08:07 AM   #68
freddi is offline freddi  United States
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Small La Scala Tutorial for noob
I run hornresp on Win10 with old Optiplex

here's a 2/3 scaled reflex with big vent in the corner - only a cubic foot airspace

maybe you can ask GM to to a MLTL for 10FW64

Click the image to open in full size.
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Old 15th March 2019, 08:09 AM   #69
GM is offline GM  United States
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Hmm, can't comment about upgrades from this past year, but HR worked fine on W10 before that. I actually loaded it on a Dell W10 in the store before willing to buy it.

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Old 15th March 2019, 08:15 AM   #70
sumotan is offline sumotan  Indonesia
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Well your a cleverman GM. The terrible thing about W10 even when I set update to be notified it will still update by itself & Iíve noticed the more it updates the more protection that I see W10 putting in. Sigh

Thanks GM

Whats the width of the reflex box & thickness of panels used ?

Thank you kindly again Freddi.

Btw Freddi, why do you call it reflex when the loading looks like a short back loaded horn. Oops sorry, does Id depth represents the internal width of the box ?

Thank you
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