This will require input modules that can do this. As I understand it, you need a Bluetooth module that supports TWS mode and can receive a signal via SPDIF and at the same time it should be able to output a signal to the I2S bus. My ESP32 input boards cannot do this.
No. This 3x100W board cannot be switched to 200W+100W mode, each gain band in this DAC works in PBTL mode, if you need 200W, you will have to install another DAC board that can output 200W, and this will ultimately also require two power supplies for 48V and 32V. This is economically justified when you need to get five bands.
For this option, you can use 2x200W DAC, the power of the second channel can be limited in the DSP or a resistive voltage divider in front of the speaker.
https://www.diyaudio.com/community/threads/2-way-dsp-amp-2x200w.422465/
Quotes from this topic.
https://www.diyaudio.com/community/...ws-bluetooth-for-speakers.379643/post-8049182
By the way, 10 meters of optical cable does not lead to a decrease in sound quality and it is thin, flexible and cheap.
https://www.diyaudio.com/community/threads/3-way-dsp-amp.415065/post-8045406
https://www.diyaudio.com/community/...ws-bluetooth-for-speakers.379643/post-8049182
As a result, if you use BT TWS between speakers, there is a high probability of reducing the sound quality. If sound quality is a priority for you, then lay the cable between the speakers, this will save you from the headache associated with BT TWS.
By the way, 10 meters of optical cable does not lead to a decrease in sound quality and it is thin, flexible and cheap.
https://www.diyaudio.com/community/threads/3-way-dsp-amp.415065/post-8045406
A little misunderstanding there, everything wireless in those worked great.
It was when the transmitter used the analog line in there was a loss in quality.
It was when the transmitter used the analog line in there was a loss in quality.
Do you think that the DAC in that device is better than the ADC?
In any case, if you compare BT with a spdif connection, to get rid of the DAC-ADC problems, you need to look for a BT module with an I2S output that can transmit 24-bit audio with low latency. LDAC seems to be able to transmit 24-bit audio, but it will have a 250 ms delay, and this already imposes restrictions on watching videos. There is BT aptX Low Latency, it has a delay of no more than 60 ms, but the maximum signal bit depth is 16 bits. That is, if you need to have the maximum with a low time delay, the spdif channel does it better than anyone. BT is always a kind of compromise between sound quality and signal delay time.
In this case the ADC was so bad even I can hear it. Joke aside I have no illusions that wireless is better than what you’re proposing.
But the new LE-audio is lower in latency.
https://www.bluetooth.com/learn-about-bluetooth/feature-enhancements/le-audio/
But the new LE-audio is lower in latency.
https://www.bluetooth.com/learn-about-bluetooth/feature-enhancements/le-audio/
This format has a delay of up to 40 ms with a signal bit depth of up to 24 bits 48 kHz, yes, perhaps if the encoding is done without significant loss of information, then it can compete with a spdif connection. Bluetooth does not stand still and is developing towards low delay and high signal bit depth. This is good in general, a wireless connection is convenient in some cases, and in the era of streaming, Bluetooth has to compete with WiFi streaming, who will ultimately win, time will tell. But at this stage, as I understand it, WiFi streaming is displacing Bluetooth from streaming in stationary audio systems. If WiFi streaming strains itself and introduces a signal synchronization system for multi-channel systems, then Bluetooth will have a very hard time offering something competitive for stationary audio systems.
"If WiFi streaming strains itself and introduces a signal synchronization system". WiiM has achieved this, according to them:
"WiiM multi-room music is a powerful feature that allows multiple WiiM devices to play the same music at the same time, perfectly synchronized across your home." and "Perfect synchronization: All speakers stay in sync, free of delay or echo."
Here's the LINK.
"WiiM multi-room music is a powerful feature that allows multiple WiiM devices to play the same music at the same time, perfectly synchronized across your home." and "Perfect synchronization: All speakers stay in sync, free of delay or echo."
Here's the LINK.
Well done. I see they also implemented synchronous sound transmission for 5.1 systems. It's a pity that they don't show the numbers, but if their difference in stream synchronicity is less than 0.1 milliseconds, then this allows implementing multi-channel systems with high spatial resolution. As a result, Bluetooth has little room to successfully compete with WiFi in stationary speakers.
It remains to wait until a hacker implements a program for a receiver of such WiFi from Wiim on the same ESP32. 😀
By the way, I have previously worked with Bluetooth APTX HD and used BT modules in my DACs, but the price of the DIY module turned out to be relatively high compared to the WiFi direction of wireless audio. In terms of the ratio of hardware price and bit depth of audio transmission, ESP32 turned out to be a more optimal solution. ESP32 via WiFi allows you to transmit 24 bits 96 kHz at a price five times lower than a Bluetooth module with APTX HD. As long as BT keeps the cost of its modern chips high, it will be more and more difficult for it to compete with WiFi streaming in stationary systems, due to the fact that the computing power of mobile processors is steadily growing, and they are getting cheaper and cheaper.