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Old 6th September 2003, 12:56 PM   #1
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Default Are you (open) baffled yet?

Konnichiwa,

Playing now and sounding astonishing (after re-locating the driver to the Baffles front and messing up my nice routed out and rounded off rear mounting hole to cure a certain nasilty likely caused by my excessively thick baffles). Have a look.....

Sayonara
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Old 6th September 2003, 01:23 PM   #2
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Default More....

Konnichiwa,

For those interested in details, the Speakers use a pair of 12" 'Wideband' Drivers custom made by Eminence for Bastanis Audio and further modified by Bastanis Audio, combined with a Beyma CP-21 Slot radiator.

These are on an Open Baffle for which I used Ikea Pronomen Solid Wood (butcher block type) Kitchen worktops, 124cm X 38cm 36mm thick.

Crossover is a single capacitor and series resistor on the tweeter, nothing on the woofer.

To go with that you get a pair of 12" subwoofer drivers and a Thomessen (Germany) Subwoofer "Plate Amp" rated at 175W/4Ohm with a very large number of adjustments (variable phase 0-270degrees, adjustable LF EQ are the more unusual ones).

I put these into a slightly undersized enclosure (compared to the recommendations by Bastanis) which is in fact the silver Box under the Shanling SACD Player (the player is not in the system, just parked). I've added a small RC EQ circuit in the subwoofer inputs to EQ out the increased System Q.

More on the Kit at:

http://www.memphis-highend.de/memphis.html

Last time I looked cost was €1,250, well worth it.

Sonically this system reminds me a lot of my 15" Tannoy Monitor Reds in corner enclosures, but with in some areas SUPERIOR performance, though also some small problems whic I hope will reduce with burn in....

Sayonara
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Old 6th September 2003, 03:58 PM   #3
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Default Some more pictures....

Stuff put into the (current) system....
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Old 6th September 2003, 03:59 PM   #4
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Default More....

and the other side....
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Old 6th September 2003, 04:12 PM   #5
JoeBob is offline JoeBob  Canada
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Looks good, really nice woodworking, I love the look of solid woods. What wood did you use?

Oh, and I completely agree that open baffles can sound outstanding...
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Old 6th September 2003, 04:22 PM   #6
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I love those british wallpapers...
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Old 7th September 2003, 01:50 PM   #7
octopus is offline octopus  England
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Monopoly!

That belongs in the attic
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Old 7th September 2003, 02:29 PM   #8
Rudolf is offline Rudolf  Germany
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Default Bastani Prometheus

Congrats,

the Bastani Prometheus have always been a consideration in my OB plans. I don´t know whether you got them with an assembly instructions in english. Bastani strongly advises to let the speakers run in for approx 200 hrs before doing individual adjustments. And he asks for the FR speaker to be mounted behind the baffle. May be you should be more patient?

What about the pair of Supravox 215 Signatue Bicone you recently had taken delivery of. Did you build them into their Acrylic Open Baffles? Can you compare them to the Prometheus? Any measurements already?
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Old 7th September 2003, 04:13 PM   #9
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Default Re: Bastani Prometheus

Konnichiwa,

Quote:
Originally posted by Rudolf
I don´t know whether you got them with an assembly instructions in english.
Thank you, not needed for me, I read and speak German quite well.

Quote:
Originally posted by Rudolf
Bastani strongly advises to let the speakers run in for approx 200 hrs before doing individual adjustments.
I did so by placing both woofers and fullranges in "clamshell" arrangements and wiring them out of phase (this kills most of the noise), then playing high level pink noise literally for several weeks.

Quote:
Originally posted by Rudolf
And he asks for the FR speaker to be mounted behind the baffle.
I did try this but suspect the thickness of my baffles (more than twice the originally suggested thickness) caused problems. I did check with Mr. Bastanis about it, he thought it should be fine, my ears diagreed so I moved the drivers to the front of the baffle and the problems vanished.

Quote:
Originally posted by Rudolf
What about the pair of Supravox 215 Signatue Bicone you recently had taken delivery of. Did you build them into their Acrylic Open Baffles?
I am still waiting for a crucial piece (2 actually) of metalwork. I have been promised again and again it would be delivered, but no such luck. Supposedly it was shipped out friday for saturday delivery, except no delivery turned up....

Sayonara
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Old 7th September 2003, 04:26 PM   #10
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What's the approx crossover point to the tweeter?
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