hi!
is it possible to destroy the DDDAC if i connect the DATA, BCK and LRC in the wrong way?
I tried the RPi with Hife-Berry instead of the wave I/O and it didn´t work. So i connected the wave again but no music anymore.
the laptop recognise the wave (luckit) and it seems that all is okay (power on wave and DDDAC...) but no music.
i have the red motherboard with the 1/2-clock delay-modification and was very happy with it.
thanks, mario
is it possible to destroy the DDDAC if i connect the DATA, BCK and LRC in the wrong way?
I tried the RPi with Hife-Berry instead of the wave I/O and it didn´t work. So i connected the wave again but no music anymore.
the laptop recognise the wave (luckit) and it seems that all is okay (power on wave and DDDAC...) but no music.
i have the red motherboard with the 1/2-clock delay-modification and was very happy with it.
thanks, mario
I think it's unlikely that a wrong connection of the data lines would break anything (I've done that before, and nothing bad happened). Maybe a poor solder joint somewhere on the DDDAC pins or the wires? Can you trace the connections from the WaveIO board to the chips on the DDDAC board (using a DVM)? Can you trace the signals with an oscilloscope?
A DVM is very useful for troubleshooting connection issues. Power everything down and get a copy of the schematic in front of you. Using the low ohms range of your meter trace the signals from the wave I/O to their destinations on the DAC board.
A few things that typically can happen are solder bridges caused when soldering that can short 2 adjacent pins or solder pads together, using enough heat to actually de solder a connection, plugging cables in backwards during re assembly, small pieces of solder from de soldering landing on the board and shorting out circuitry and audio player software reconfiguring itself when the USB connection is lost. Certain software will select a default device rather than the Wave I/o as output device. I have had this last problem occur when switching between USB and spdif inputs.
A close visual inspection of the boards is always useful in this situation to rule out short circuits etc.
after disconnecting and connecting again for 3-4 times and messuring it works again with the Wave and Rpi alone. but with the Rpi and hifi-berry over I2S music is on double speed and has awful crackles. seems it has to do with the implementation of the berry.
will try later again.
thanks for your ideas, mario
Hmmm, loose connection somewhere on the DDDAC board? I'd check the connector pins and their solder points on the DDDAC board. Or the cable you're using to connect the WaveIO/RPi to the DDDAC.
That sounds like an issue with the (software) configuration. Check the documentation of the software you're using with the RPi.
Hello guys!
Anything I will have to think about when doing transformers (Cinemag 15/15B) instead of caps, and also adding another DAC-board? Anything that needs to be changed in any way, like resistors or power?
The parts are on their way per mail now, so I just wanted to hear if anyone had anything to say about this beforehand ...
Anything I will have to think about when doing transformers (Cinemag 15/15B) instead of caps, and also adding another DAC-board? Anything that needs to be changed in any way, like resistors or power?
The parts are on their way per mail now, so I just wanted to hear if anyone had anything to say about this beforehand ...
Hello guys!
Anything I will have to think about when doing transformers (Cinemag 15/15B) instead of caps, and also adding another DAC-board? Anything that needs to be changed in any way, like resistors or power?
The parts are on their way per mail now, so I just wanted to hear if anyone had anything to say about this beforehand ...
Adding more DAC boards means you'll have to change the load resistors on the main board. Doede has a table on his website that shows the required resistor values for a given number of DAC boards.
I am in the process of building a new DDDAC with Sowter output transformers. The system (amp and speakers) does not need a lot of gain, and the idea is to live with software volume control only (please don't educate me on this, I have done my homework). Normally, the Sowters provide some gain to boost the DDDAC output voltage. So, instead of using the extra gain of the Sowter transformers I might just connect the Sowters backwards, thus REDUCING the output from the DDDAC. Do you guys see anything that might be wrong with this? Things to consider?
Sowter vs Cinemag transformers.
I have Tried both in my setup and prefer the Cinemags.
I have the big Mcintosh 1.2 KW monoblocks and big Jbl speakers, and the Sowter trafos was simple to much. Sowter boosted up the bass a little to much for my taste. I'm pretty sure the Sowter's is a perfekt match in most of the systems around, but unfortunately not for me.
A Friend bought the Sowter's, and is very happy with the sound. It all comes down to matching the entire system, as always.
I have Tried both in my setup and prefer the Cinemags.
I have the big Mcintosh 1.2 KW monoblocks and big Jbl speakers, and the Sowter trafos was simple to much. Sowter boosted up the bass a little to much for my taste. I'm pretty sure the Sowter's is a perfekt match in most of the systems around, but unfortunately not for me.
A Friend bought the Sowter's, and is very happy with the sound. It all comes down to matching the entire system, as always.
Cinemags are in; sounds wonderful!
Good to hear Kanutus.
Cinemag's in my setup added a new level of details and improved 3D, a bit on the warm side without being to dull.
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I am running a recently construcsingle board with a direct balanced output to a Pass Alph P. I have made so many changes i my system lately that I don't really have a good handle on the sound yet. I have had a few problems with the Wave IO not initializing properly or displaying no sample rate. It always sorts itself out after a re boot of the computer. I am running a mac Mini and Pure music 3.06. I ran the Wave IO up to 352khz using the upsampling in PM and it all worked fine. Has anyone experimented with a USB improver like the W4S recovery? I have one and tried it but didn't hear any big changes so I removed it for simplicity. I am doing some breaking right now using the SPDIF input and a CD player on repeat.
I am not running any filter caps on the outputs. Is there any consensus on the impact of using them? I have a pair of .0068 polystyrene caps that I may try at some point. Too many variables to juggle! It will likely take me until next spring to get it all optimized!
Happy Listening!
I am not running any filter caps on the outputs. Is there any consensus on the impact of using them? I have a pair of .0068 polystyrene caps that I may try at some point. Too many variables to juggle! It will likely take me until next spring to get it all optimized!
Happy Listening!
If you amp has DC blocking caps at the input, you don't need any caps at the DDDAC output.
By filter caps I mean the caps that can be installed on the main board across the output resistors. The pads are located between the output resistors on the main board. The caps form a single pole LPF on the output. The Aleph P is AC coupled so I am connected directly to the outputs in the DDDAC without issues.
I have completed a 16 stack DDDAC using the old version boards and am very happy with the sound quality.
However, I would like to make a 16 stack version using the powered by tent boards.
I did try a while ago to make one, but could not get rid if the distorted scrunching noise and had to give up on the project for various reasons.
If anyone manages to get 16 Tent powered boards to work, please let me know as the Tent boards do sound very good and would only improve with more boards.
My power supply would be fine powering the Tent boards, it`s capacity is about 4.5A.
However, I would like to make a 16 stack version using the powered by tent boards.
I did try a while ago to make one, but could not get rid if the distorted scrunching noise and had to give up on the project for various reasons.
If anyone manages to get 16 Tent powered boards to work, please let me know as the Tent boards do sound very good and would only improve with more boards.
My power supply would be fine powering the Tent boards, it`s capacity is about 4.5A.
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What was the max number of DAC boards that you got working without issues ?