New SB Acoustics wideband

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charmerci

Re: New SB Acoustics wideband
« Reply #1 on: 24 Jun 2019, 02:31 pm »
Wow. What's with the high frequency rise?  :scratch:

JohnR

Re: New SB Acoustics wideband
« Reply #2 on: 24 Jun 2019, 02:46 pm »
I guess you would probably want to be listening about 15 degrees off axis.

FullRangeMan

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Re: New SB Acoustics wideband
« Reply #3 on: 24 Jun 2019, 02:52 pm »
First time I see a fiberglass cone, the 3 suggested enclosures are sealed.
The freq start to rise away from the musical range, the piano higher note are 4186Hz, a well made internal stuff will lower it.

richidoo

Re: New SB Acoustics wideband
« Reply #4 on: 24 Jun 2019, 03:28 pm »
Wow. What's with the high frequency rise?  :scratch:

It's some cone breakup plus some beaming. Probably they are allowing the center of the dust cap to flop a little to act like a tweeter. Actually the FR looks pretty good compared to many FR drivers. FR are intended to be listened off axis, which filters out the beaming highs.

FullRangeMan

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Re: New SB Acoustics wideband
« Reply #5 on: 24 Jun 2019, 03:31 pm »

FullRangeMan

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Re: New SB Acoustics wideband
« Reply #6 on: 25 Jun 2019, 11:02 am »
Cone breakups will appear in the impedance line.

gab

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Re: New SB Acoustics wideband
« Reply #7 on: 26 Jun 2019, 01:15 pm »