[HAL]

Introducing the Danville Signal Processing dspMusik 2x16, 16 channel DSP crossover and HiRez ADC and DAC's. This has the same input structure as the dspMusikLCD presently, but the output system has been increased to 16 channels for larger speaker systems.

The DSP processor is now an Analog Devices ADSP21469 based dspblok with external memory to allow long convolutional filters for things like speaker and room correction. 

DSP Concepts Audio Weaver development system version 5.16 supports the increased capabilities for the system.

The ADC module in the system will now permit mnimum phase measurements at 24bit/192KHz using the dspMusik as the digital crossover signal generator with external software like RoomEQ or Room EQ Wizard.  This can also be used for speaker and room correction measurements with software like RoomEQ.

This is the digital crossover to be used with The Megaliths speakers as the final system with the Parasound Halo A23 amplifiers.

Please post any questions about the system and will get answers as needed.

[JDUBS]

The DSP processor is now an Analog Devices ADSP21469 based dspblok with external memory to allow long convolutional filters for things like speaker and room correction. 

How long?

-Jim

[HAL]

Last time I checked, 15000 taps per channel, depending on if the delays being used for other signal processing.  I will know more once the unit is here for trials.

[HAL]

The Megaliths 16 channel dspMusikLCD harware is now running the crossover block diagram at Danville. The system will be in testing at HAL on Monday.

The extra capacity available with the ADSP21469 and expanded external memory will allow long FIR convolutional impulse response corretion filters to be added.

The HiRez ADC in the unit will work with external software for High Resolution measurements to be made for improved sound for the correction. Working with a Earthworks measurement mic and mic preamp for the system.

This same capability will allow folks with analog sources that need archiving to do that at 24bit/192KHz resolution via USB to external programs like Adobe Audition of other DAW for digital recording.

[HAL]

Three more days!!! 

[mresseguie]

Hi. Thanks for updating us.

Under what circumstances would I utilize all 16 channels?

Thank you.

Michael

[HAL]

Michael,
If you were building a line array the 16 channel version would allow a lot of flexibility for the design.  This way you can drive individual elements of the line array in configurations not possible before.  This is why I an using it with The Megaliths.

You can also add multiple subs with different time delays for better integration with the main speakers.

Most people would be fine with the 8 channel dspMusikLCD in their system.  Same sound quality and lower cost if you are running anything that is a 4-way or under speaker design, or 3-way with subs. 

[HAL]

Launch in T - 1!

[HAL]

Today is launch day!

Picking up the president of Danville Signal today for his visit to HAL with the 16 channel dspMusikLCD. Installation and testing start Monday. Visiting a customer install for his VMPS RM50 speakers on Tuesday. Discussions through Wednesday.

First on the agenda Monday is getting The Megaliths running with the new block diagram and measurements to finalize the DSP crossover.

This is going to be interesting!

[HAL]

We have liftoff!

The 16 channel dspMusikLCD arrived yesterday with its designer, Al Clark from Danville Signal for trials with The Megaliths speakers.

Next step is measurements to design the updated crossover and then for room correction.

 

[HAL]

Here is the dspMusik 2x16 in testing with the MS-3 Music Server running The Megaliths crossover design.   Everything is working, so now time to rewire the amplifier array for the full crossover to work.

The dspMusik 2x16 system now works with Room EQ Wizard running on the MS-3 being the signal generator and mic analog input for 24bit/192KHz room measurements to the PC.  This is in testing as it is new with REW 5.19.

[HAL]

The dspMusikLCD 2x16 is connected to the amplifier array and measurements are ongoing.   Then listening session begin. 

[HAL]

After resurrecting my measurement mics calibration data from 13 years ago from 3.5" floppies, time for a new set of measurements.

The dspMusik 2x16 is the first system to have a full minimum phase ADC to USB output for measurements with the new XU208 async USB interface at 24bit/192KHz.  This now interfaces with the latest beta version of Room EQ Wizard for both measurements and data files for correction with other than MathAudio RoomEQ. 

The Earthworks M550 calibrated omni mic and 1021 mic preamp have the shortest measured impulse response of any mic system I can find.  This means less coloration from this mic than with others.  If the measurement is used for impulse correction, and the calibration data used, it is as close to no mic influence as possible.   With the mic response corrected from 3Hz to 29KHz, very flat over the entire audible range.

This should get very interesting!