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Qudelix is developing a MiniDSP destroyer.
- Thread starter abdo123
- Start date
Yes, normally, we have stereo(2-ch) DAC/AMP and stereo wire interface. And an IEM built-in analog crossover circuit splits the stereo full range audio into each frequency bands.
Qudelix-T71 DAC/AMP has 8-ch DAC/AMP and output 8-ch analog audio signal. Qudelix-T71 IEM receives those 8-ch audio and reproduces acoustic wave with each driver.
Of course, we need DSP processings to make the front-ch sound in front, and to make the rear-ch sound in rear.
The difference is that:
7.1 or 5.1ch --> DSP Processing --> Down-mixing into Stereo --> Stereo DAC/AMP ---> Stereo Speaker Drivers
vs.
7.1 or 5.1ch --> DSP Processing --> 8-ch DAC/AM --> 8 Speaker Drivers
Walter
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However, for stereo audio sources, Qudelix-T71 provides 4-way active digital output, utilizing the 8-ch HW resources.
If I understand that correctly, this means we will be able to use this as a DSP and active crossover into a 4 channel DAC, similar to a miniDSP Studio without the Dirac. If that is indeed correct, and the price is right, this could be a very interesting product.
If I understand that correctly, this means we will be able to use this as a DSP and active crossover into a 4 channel DAC, similar to a miniDSP Studio without the Dirac. If that is indeed correct, and the price is right, this could be a very interesting product.
Correct.
Qudelix-T71 tracks the actual incoming audio number of channels, and processes the input respectively.
If stereo input detected, T71 can process 4-way active crossover and output them through 8-ch DAC/AMPs.
Not yet fixed.
But, the form factor would be:
- ARM + DSP(600MHz)
USB Audio Class 2.0
Stereo 384/32
7.1 or 5.1ch
- ES9219 x 4
8-ch Output directly from ES9219 (up to 2V RMS)
- TI OP AMP
3.5/2.5 stereo output from TI OPAMP
for generic 3.5mm UNBAL stereo output
for generic 2.5mm BAL stereo output
- Rotary Volume Knob
- OLED Display
- Built-in Dual MEMS Microphone
- Aluminimum CNC chasis
- No Battery / No Bluetooth
Last edited:
T71 uses USB-C connector to output 8-ch analog audio.
8-Ch Audio Signal 8 pin go through:
TX1+, TX1-, CC1, D+, D-, SUB1, RX2-, RX2+ (Symmetric)
Last edited:
.
Too bad there is no analogue or digital input (other than USB). Could make for a fun active speaker DSP otherwise. What are the DSP options anyway? The DSP chosen is not really a standard old school DSP chip. Can you but the thing without the IEM as well?
Is this safe for plugging standard USB devices? It doesn't comply to the USB-C alternate mode standard.
Reusing existing connectors for things like this is mostly not a good idea. The chance that users interpret the connector wrong is very high. With any luck, you will not damage the DAC or the other side of the cable. Hopefully, there are some measures taken to prevent misuse.
It's not about the sturdiness. It's about the fact that it's a USB-C connector that is repurposed for something else. For a DIY project, not an issue, for a commercial product, it seems risky.
Biblob
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Will you provide an adapter to 8 3,5 mm jacks or TRS plugs?
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