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Extreme Open Baffle Active Speaker inspired by Linkwitz LX521

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Joachim Gerhard

Joachim Gerhard

Member
Joined 2009
suesskindaudio.de
The 6 channel DSP-DA combo is in the making.
 

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curryman

Member
Joined 2010
Paid Member
danibosn said:
Joachim,

That DSP-DA combo is exactly what I am planning to do. Can you tell us which modules you use in that DSP-DA combo?
Click to expand...

Hehe, maybe I should jump in here:
it's a miniSHARC DSP from miniDSP plus 3 I2S input curryman DACs. In this case the so called AN_FP provides a stereo analog input (plus an additional stere output, so it's actually a 8ch DSP-DA combo :D) and the Vol_FP allows for (digital) volume control and preset selection (4 presets).

Since the miniSHARC board has a suboptimal interface for multiple I2S DACs (bit clock and word clock lines shared for several data lines, which is quite usual btw.) I made an adapter board providing four buffered I2S outputs. This adapter board furthermore features buffered and transformer isolated SPDIF input and output, since the miniSHARC board only has TTL level in/out. The adapter board is in beta test phase at the moment, Joachim getting the first prototype ;)

kind regards, Daniel
http://www.minidsp.com/products/minidspkits/vol-fp
 
6

6.283

Member
Joined 2008
2pi-online.de
I hear you.
But if the size of the room is not too tight, a gradual woofer roll-off, thoughtful placement and one or the other PEQ do the job in the modal region. Let alone Dipole woofers, which do not excite the lowest room modes (and that can be said for sure). That makes the DRC part of the package redundant.
Some people think DRC is panacea (i.e. it makes f...ed up speakers sound good in any closet), but it is not. It only makes those guys less rich :D
 
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AudioLapDance

Member
Joined 2003
curryman said:
...
Since the miniSHARC board has a suboptimal interface for multiple I2S DACs (bit clock and word clock lines shared for several data lines, which is quite usual btw.) I made an adapter board providing four buffered I2S outputs. This adapter board furthermore features buffered and transformer isolated SPDIF input and output, since the miniSHARC board only has TTL level in/out. The adapter board is in beta test phase at the moment, Joachim getting the first prototype ;)

...
http://www.minidsp.com/products/minidspkits/vol-fp
Click to expand...

That's exactly what I was looking for (properly buffered I2S)!:up:


Are you interested in another beta tester? :cheers:

Cheers,
Jeff
 
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