I tried to use the Raspberry Pi to the DAM 1121 to upload the filters using minicom as described by tonno in the DAM 1941 thread however, I do not seem to see any success in it. I definitely connected the serial lines and I2S and disabled the shell and enabled serial.
RPI DAM1121
6 GND --------- GND (one of them on J2)
8 TXD --------- COM_RXD 10 (J2)
10 RXD --------- COM_TXD 12 (J2)
12 BCK --------- I2S_2_BCLK 6 (J3)
35 LRCK --------- I2S_2_LRCLK 4 (J3)
40 DOUT --------- I2S_2_DAT 2 (J3)
As a test, I tried to switch inputs, i.e. I4 or I5. Any other checks that i can do?
Thanks in advance!
RPI DAM1121
6 GND --------- GND (one of them on J2)
8 TXD --------- COM_RXD 10 (J2)
10 RXD --------- COM_TXD 12 (J2)
12 BCK --------- I2S_2_BCLK 6 (J3)
35 LRCK --------- I2S_2_LRCLK 4 (J3)
40 DOUT --------- I2S_2_DAT 2 (J3)
As a test, I tried to switch inputs, i.e. I4 or I5. Any other checks that i can do?
Thanks in advance!
Just leaving these reminders for any future searches regarding Filter brewing as it can be extraordinarily confusing to to figure out the process:
1. There's lot of mentions about upgrading firmware, but I only found 1 post instructing that uManager also needs to be updated! Maybe it's instructed somewhere obvious but I didn't see it. I couldn't get my DAM to play after the firmware 1.21 and thankfully found a post mentioning that uManager needs to be updated as well after the FW by just typing (#)'update' in uManager and hitting enter.
2. If anyone wants to see the *current* filters selected for the DAM, type (#)'filters' in uManager.
And a reminder regarding Play Mode to demo filters courtesy of Vdi_nenna:
3. Type '?' for Help in uManager. You will see the list of commands to find the entire/all of filter list, lower/reduce/turn down volume etc.
1. There's lot of mentions about upgrading firmware, but I only found 1 post instructing that uManager also needs to be updated! Maybe it's instructed somewhere obvious but I didn't see it. I couldn't get my DAM to play after the firmware 1.21 and thankfully found a post mentioning that uManager needs to be updated as well after the FW by just typing (#)'update' in uManager and hitting enter.
2. If anyone wants to see the *current* filters selected for the DAM, type (#)'filters' in uManager.
And a reminder regarding Play Mode to demo filters courtesy of Vdi_nenna:
3. Type '?' for Help in uManager. You will see the list of commands to find the entire/all of filter list, lower/reduce/turn down volume etc.
After comparing different filters I've settled on TNT's 44 for now. I could live with any of the filters but the TNT so far does have a 'live, in the room' quality to it. A little more dynamic range, maybe? Or a very slight loudness effect? I dunno but guitars do crunch real good with it and operatic vocals have real presence without being harsh. This is via PC/USB/I2S/1021/headamp/HD6XX headphones
Glad you like it! One more win for science over woodo as there is nothing but adherence to the sampling theorem in this filter. No "fourier denial" what so ever
//
Hi wushuliu, I also like the TNT filter pack very much (tnx TNT!). Which of the 4 filters is the '44'??
That's also my impression exactly. It's the best filter until now in my system. Transparent and lifelike.
