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Old 19th April 2004, 07:10 AM   #1
kirc is offline kirc  Slovenia
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Default Any design idea for SS 18W8545 and D2905/9500

Hi!

Today I receive a pair of Scanspeak 18W8545 and a pair of Scanspeak D2905/9500.
I would like to build a pair of loudspeakers, probably Sonus Faber Electra Amator II clone.
Is anyone at this forum use this combination ? Is anyone who build a Electra Amator II clone ?

I will drive this speaker with Aleph P/Aleph 5 clone.
I think that XO can be simple 6dB/oct with a little resistor correction on tweeter.

Any Idea on design ?
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Old 20th April 2004, 06:17 AM   #2
kirc is offline kirc  Slovenia
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Default no hints ?

No hints at all ?

Looking for some link's to Sonus Faber speaker clones...
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Old 20th April 2004, 07:09 AM   #3
vuki is offline vuki  Croatia
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Hi kirc,

I have some expirience with SS8545 driver, but I used it in a 2way project with revelator (9900) tweeter.
First order crossover can be used with SS8545 but not a simple one, because to linearize its response one have to use large inductor which leeds to low crossover point (<1,8kHz) and still has too easy post xover-point slope.
I used 2nd order crossover with few compensation notches, and I'll post measurements graphs and schematic later if you are interested.

regards,
Vuki
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Old 20th April 2004, 02:35 PM   #4
Hans L is offline Hans L  Netherlands
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Here's one with the 9300 tweet, which is pretty close to the 9500.
Making of M1

That should make for a very nice sounding speaker. It could need some (very) minor tweaking for the different tweeter, if any, depending on your preferences in voicing.

Cheers.
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Old 20th April 2004, 04:58 PM   #5
vuki is offline vuki  Croatia
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Here...
xover
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Old 20th April 2004, 04:59 PM   #6
vuki is offline vuki  Croatia
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Old 20th April 2004, 08:18 PM   #7
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I am also currently designing a pair of speakers using those two drivers in a ported box of ~ 20 liters. I have built one prototype box to test/burn in the 8545s and will soon be building some more boxes.

Any more advice about the XO would be appreciated.

Robert
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