I’d like to add BT to my 1541 via I2S any chance I can use the internal header to do this? I’m fine with losing one of the existing inputs. Please see url below for a picture of the internal header.
Soekris DAC1541 - Home Source Components - www.Head-Case.org
Soekris DAC1541 - Home Source Components - www.Head-Case.org
Just noted how close three screws are to surface mounted components on the 1541 board.
You’d need something to go from Bluetooth to output i2s.
So, you are upsampling 44 in software, right? That is also digital filtering with unavoidable effects upon the sound. A different upsampling algo will sound different. In fact you are effectively moving the filtering function from the DAM to software.
It's perfectly fine, only the DAM filters are then disabled. Using HQP you get a wide selection of filters. Whether this is better only your ears can decide.
No, neither hardware nor firmware support for it. You would need to convert from bluetooth to spdif....
I’d be happy to repurpose the USB input? As that uses I2S? The BT module needs no firmware support, it is completely standalone, merely needs to interface with a I2S input.
Online Shop PA214 Bluetooth 5.0 Audio Module CSR8675 Fiber SPDIF I2S IIS APTX-HD | Aliexpress Mobile
Regarding BT receiver, I have added it to my dual dam1021, and I share with the BNC input with a relay switch.
The BT receiver card supports BT 5.0 and it can output SPDIF signal. There's another receiver card which can output I2S but I chose SPDIF one because I want to share the input with BNC.
Either BNC or BT receiver signal is selected by a relay, then the signal will be passed thru the digital transformer as isolation before going into SPDIF1 of dam1021.
The BT receiver card supports BT 5.0 and it can output SPDIF signal. There's another receiver card which can output I2S but I chose SPDIF one because I want to share the input with BNC.
Either BNC or BT receiver signal is selected by a relay, then the signal will be passed thru the digital transformer as isolation before going into SPDIF1 of dam1021.
Attachments
Soren,
Can you perhaps post a pinout for the J3 connector? It seems to have pins that route directly to the opto-isolators from the USB input. I.e. if I'm not mistaken this is the I2S output of the USB input? If so, I should be able to hook in the BT > I2S module I have purchased, disabling the USB IC if needed.
I'd appreciate your support on this as currently my 1541 goes unused as I discovered the wonderful world of BT lossless HD streaming with aptX.
Thanks!
An externally hosted image should be here but it was not working when we last tested it.
Sorry, but no. the dac1541 is not a DIY product, and J3 is something I was planning to use for some special testing, do NOT use J3 for anything.
You might consider selling your dac1541 and get a dam19x1, that have an extra I2S input....
...