Fostex 206E/103E + Raven R-1 Ribbon + Dual 12" Yamaha Neodynium Open Baffle Speakers - diyAudio
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Old 27th July 2004, 03:06 PM   #1
Steve M is offline Steve M  Australia
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Talking Fostex 206E/103E + Raven R-1 Ribbon + Dual 12" Yamaha Neodynium Open Baffle Speakers

Pics of my Fostex/Raven/Yamaha Test Mule, an eclectic selection of drivers but sounds pretty good !!

Regards,

Steve M.
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Old 27th July 2004, 03:16 PM   #2
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What speakers did those used to be. Or did you build the cabinets also?
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Old 27th July 2004, 03:24 PM   #3
Steve M is offline Steve M  Australia
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A shot of the derriere (rear end) ...
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Old 27th July 2004, 03:28 PM   #4
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What are you driving those monsters with?
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Old 28th July 2004, 02:19 AM   #5
Steve M is offline Steve M  Australia
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Hi Gavin,

I trust the following answers your queries ... re-posted from another thread.

" This project is just a 'test mule' and came about as a concept to marry the Fostex 206E fullrange driver into a 'truly' full range system with uncompromised powerful bass and extended treble to 45kHz. Also, I just wanted to see what an open baffle design would sound like.

The biggest surprise is the bass, I'm quite amazed how even in an OB configuration the dual 12" Yamaha drivers are rattling all the windows like a subwoofer. I have heard better bass depth and would guess that the OB is only going down to about 35-40 Hz, but overall the bass sounds accurate and has very good speed.

Joseph: the second smaller Fostex 103E is just an alternative driver mounted in the baffle as an experiment, it is not running together with the 206E. I just switch from one to other to see what they sound like. I much prefer the 206E overall, it has that tight imaging and point source character in spades!

The jarrah timber frame and electronics you see in the pic are from my favourite electrostatic speaker, the ER Audio ESL-3, designed and built by Rob Mackinlay, see: www.eraudio.com.au .

The Fostex 206E is a bit of an enigma, it sounds like an electrostatic speaker and does some things really well while at other times I feel it does not quite have the sophistication and refinement of my reference ESL; three inch dome mids or Accuton ceramic C79 mids that I have used. Overall though the 206E is unbeatable for the money (@ $84USD each) and is a plug-n-play speaker, just stick it in a 20L BR box with no crossover etc. and you are immediately transported to hi-end sound. The 206E is best listened to on it's own (without the Raven), where it's point source/single driver attributes come to the fore, and treble is more than satisfactory. That said, it has a certain roughness which I am trying to come to terms with at the moment (and this may disappear in time as it runs in, mine has only done about 80 hrs). I am finding that the Raven R-1 ribbon tweeter added into the mix somehow makes the Fostex sound smoother, more airy and extended. I have a 4 ohm Mk I Raven, crossed over at 14 kHz with First Order x-o using expensive tinfoil capacitors. At this stage overall I prefer it with the Raven.

Gaucho: I have purposely offset the 206E & Raven R-1 from centre by a ratio of 1:0.8/0.6 as recommended by other OB experts on this site. The dual 12" bass drivers are out of a threeway domestic speaker model called the Yamaha NS1200. This 50kg acoustic suspension speaker has uncompromised build quality selling in it's day in 1992 @ ~$6,990AUD, twice the cost of the deservedly famous Yamaha NS1000 (the beryllium jobbie). The NS1200 carbon impreganated paper bass units are available from Yamaha Music Inc and has a Part No. JA3120, but they are prohibitively priced at $800AUD each! In any event, you are still better off with bass drivers like the 11" Eton or Fostex FW405 from Madisound which probably have better specs on paper. "


Also, the whole rig is being driven by the superb Supratek Cabernet valve preamp; Merlot S.E.T triode monobloc amplifiers, see: www.supratek.biz ; or Bel Canto eVo 200.2 power amp. Parallel connected bass drivers are actively driven by solid state 150w plate amp with adjustable level, phase shift 0-180 degrees and adjustable frequency from 40-180 Hz.



Regards,


Steve M.
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