miniDSP kits, our answers to your technical questions - Page 36

DQ828 · 2nd November 2011, 01:51 AM

Quote:

Originally Posted by curryman

Setup would be:
digital source -> miniDIGI (digital in) -> miniDSP -> High frequency out to miniDIGI -> DAC
Sub uses low frequency analog output of miniDSP.

How do you split the high frequency out via the Digi?

curryman · 2nd November 2011, 07:19 AM

The routing of data from DSP to outputs is handled by the loaded plugin. For example the 2.1 adv plugin has PlugIn OUT# 1/2 (e.g. sub out) available on I2S_Data_OUT_1/2, PlugIn OUT# 3/4 (e.g. high out) available on I2S_Data_OUT_3/4 These channels can be routed to the SPDIF out using the jumpers on the miniDIGI.
Just take a deep look to the datasheets and user manuals

DQ828 · 2nd November 2011, 09:50 AM

Quote:

Originally Posted by curryman

The routing of data from DSP to outputs is handled by the loaded plugin. For example the 2.1 adv plugin has PlugIn OUT# 1/2 (e.g. sub out) available on I2S_Data_OUT_1/2, PlugIn OUT# 3/4 (e.g. high out) available on I2S_Data_OUT_3/4 These channels can be routed to the SPDIF out using the jumpers on the miniDIGI.
Just take a deep look to the datasheets and user manuals

Sorry for my ignorance, but just so I'm clear on what you mean. The digital signal comes into the Digi, gets sent to the DSP, is broken up & then the high frequencies can be sent back to the output of the digi?

mikey_audiogeek · 2nd November 2011, 10:43 AM

Quote:

Originally Posted by DQ828

Sorry for my ignorance, but just so I'm clear on what you mean. The digital signal comes into the Digi, gets sent to the DSP, is broken up & then the high frequencies can be sent back to the output of the digi?

Correct.

Cheers,
Mike

lduarte1973 · 2nd November 2011, 03:51 PM

do you have plans to release minidsp 8x8 in a box soon ?

DQ828 · 3rd November 2011, 11:11 AM

Quote:

Originally Posted by mikey_audiogeek

Correct.

Cheers,
Mike

I wish I could work out how to do that, I can't get my brain around the possibilities, I need something like a line diagram (not a block diagram) showing how everything is connected, so I can work out where the signals can come from & go to, I get lost in the middle.

Thanks
David

curryman · 3rd November 2011, 01:49 PM

Hoping the attached diagram brings some light into your brain ;-)

miniDSP and miniDIGI are stacked and connected through ribbon cables. Jumpers and plugin configure the signal routing.

soundnovice · 15th November 2011, 05:40 AM

hi
may i know which DAC is being used in the miniDSP (2x4) kit. is this DAC having good enough specs comparable to high end DAC systems or should i consider adding external DAC boards?

curryman · 15th November 2011, 07:26 AM

The internal DACs of the DSP (Analog Devices ADAU1701) are used on the miniDSP 2x4. Specs are quite OK though not comparable to high end DAC Systems.
I would try the build in DAC and optimize the rest of the system (room!, speaker EQ,...) first. In combination with miniDIGI it is quite easy to add external DAC later (each miniDIGI has one SPDIF output).

doug20 · 15th November 2011, 02:28 PM

I would like to see the measurements that proves the "not comparable to high end DAC Systems".

Imo its a waste of time and intelligent discussion to debate DAC differences.

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2nd November 2011, 07:19 AM	#352
curryman diyAudio Member Join Date: Aug 2010	The routing of data from DSP to outputs is handled by the loaded plugin. For example the 2.1 adv plugin has PlugIn OUT# 1/2 (e.g. sub out) available on I2S_Data_OUT_1/2, PlugIn OUT# 3/4 (e.g. high out) available on I2S_Data_OUT_3/4 These channels can be routed to the SPDIF out using the jumpers on the miniDIGI. Just take a deep look to the datasheets and user manuals

2nd November 2011, 03:51 PM	#355
lduarte1973 diyAudio Member Join Date: Feb 2009 Location: Lisbon	do you have plans to release minidsp 8x8 in a box soon ?

15th November 2011, 05:40 AM	#358
soundnovice diyAudio Member Join Date: Jan 2011	hi may i know which DAC is being used in the miniDSP (2x4) kit. is this DAC having good enough specs comparable to high end DAC systems or should i consider adding external DAC boards?

15th November 2011, 07:26 AM	#359
curryman diyAudio Member Join Date: Aug 2010	The internal DACs of the DSP (Analog Devices ADAU1701) are used on the miniDSP 2x4. Specs are quite OK though not comparable to high end DAC Systems. I would try the build in DAC and optimize the rest of the system (room!, speaker EQ,...) first. In combination with miniDIGI it is quite easy to add external DAC later (each miniDIGI has one SPDIF output).

15th November 2011, 02:28 PM	#360
doug20 diyAudio Member Join Date: Mar 2009	I would like to see the measurements that proves the "not comparable to high end DAC Systems". Imo its a waste of time and intelligent discussion to debate DAC differences.