After looking at all the OPUS documentation I still find it a bit difficult to get all the wiring right. So I took al look at some pics I found and made this drawing. Would be nice if someone could check if I'm doing it right.
Looks good to me. 🙂
So here they are! 😛 The switch positions.
Pictures are larger on Flickr.
First the OPUS. I'm pretty sure I got this right.

OPUS Switch by jvdwal2008, on Flickr
Second the Metronome. I'm also pretty sure I've got this right too exept for
the AUTOMUTE jumper. Am I right I need to install a jumper at that position?
DISABLE remains open.

Metronome switch by jvdwal2008, on Flickr
Third the Receiver. After taking the picture I saw I got the two middle positions wrong.
They need to be in the mid-position. (they are now in the down (-) position) Is that right?

Receiver Switch by jvdwal2008, on Flickr
Pictures are larger on Flickr.
First the OPUS. I'm pretty sure I got this right.

OPUS Switch by jvdwal2008, on Flickr
Second the Metronome. I'm also pretty sure I've got this right too exept for
the AUTOMUTE jumper. Am I right I need to install a jumper at that position?
DISABLE remains open.

Metronome switch by jvdwal2008, on Flickr
Third the Receiver. After taking the picture I saw I got the two middle positions wrong.
They need to be in the mid-position. (they are now in the down (-) position) Is that right?

Receiver Switch by jvdwal2008, on Flickr
I have not looked too closely yet, but as long as they match what is in the manual they should be fine. Just try it out. It should not harm anything if you have it wrong. Just don't use it full volume into speakers until you are sure you have it right. If your going into a pre-amp just set the volume very low.
You do want auto-mute jumpered on metronome.
You do want auto-mute jumpered on metronome.
Thanks Russ! Auto-mute jumper is installed. It is good to know there's no problem when a switch is in the wrong position!
I got the OPUS dac up and running without the Metronome and enjoyed it for a while.
The OSR switch is positioned in the middle at 96 so I thought lets put it in the high position to try 192. Did that and got no sound. So I put it back in the middle position. And... no sound. Fiddled around with the switch but still nothing...
What am I doing wrong here?
The OSR switch is positioned in the middle at 96 so I thought lets put it in the high position to try 192. Did that and got no sound. So I put it back in the middle position. And... no sound. Fiddled around with the switch but still nothing...
What am I doing wrong here?
Hmmm ... I disassembled it en put it back together again. Everthing works as advertised again... Maybe it just needed some love and attention. It's also playing at 192 now...
UWB regulators
There was a post by Erlend Sæterdal about New Class D UWB regulators. I never heard before that brand, and decided to buy one UWB. My 5 V version arrived on Monday to replace LP2985 (DAC panel, VRA). Well, that change makes a really huge improvement. Like you put an Acoustic Zen Silver Reference IC in your chain instead of Matrix (May be bigger...). It is highly recommended tweak . János PS: I am going to replace VRD (3,3V) ASAP.
There was a post by Erlend Sæterdal about New Class D UWB regulators. I never heard before that brand, and decided to buy one UWB. My 5 V version arrived on Monday to replace LP2985 (DAC panel, VRA). Well, that change makes a really huge improvement. Like you put an Acoustic Zen Silver Reference IC in your chain instead of Matrix (May be bigger...). It is highly recommended tweak . János PS: I am going to replace VRD (3,3V) ASAP.
Brian/Russ,
I notice back in August you mention that there was a plan for revision to the OPUS.
Are you planning on doing another run of the existing version (currently shows as out of stock) or focus on buffalo series of DACs until new revision is ready?
I notice back in August you mention that there was a plan for revision to the OPUS.
Are you planning on doing another run of the existing version (currently shows as out of stock) or focus on buffalo series of DACs until new revision is ready?
It looks like the revision will be ready in early 2012!
Any insight into the mods?
Happy Holidays! 🙂
Any insight into the mods?
Happy Holidays! 🙂
There was a post by Erlend Sæterdal about New Class D UWB regulators. I never heard before that brand, and decided to buy one UWB. My 5 V version arrived on Monday to replace LP2985 (DAC panel, VRA). Well, that change makes a really huge improvement. Like you put an Acoustic Zen Silver Reference IC in your chain instead of Matrix (May be bigger...). It is highly recommended tweak . János PS: I am going to replace VRD (3,3V) ASAP.
Happy to hear you liked it. 😉
It looks like the revision will be ready in early 2012!
Any insight into the mods?
Happy Holidays! 🙂
Revised layout, option for Tridents regulators, Volumite built in...
AVDD tweak
Hi, there is a must try tweak! I removed the L3 ferrite, and connected the NewClassSD (5V) regulator output directly instead of empty pad of the ferrite (to the closer side of DAC chip No15). The original VA power input is still connected, so AVDL and AVDDR still gets its power from VRA on board regulator. This tweak is very worth to do, and my opus is jumped into higher level. János
Hi, there is a must try tweak! I removed the L3 ferrite, and connected the NewClassSD (5V) regulator output directly instead of empty pad of the ferrite (to the closer side of DAC chip No15). The original VA power input is still connected, so AVDL and AVDDR still gets its power from VRA on board regulator. This tweak is very worth to do, and my opus is jumped into higher level. János
I was just mulling over replacing the regs on my current opus the other day. Looking forward to the Trident enabled Opus!
It's already in the works. It requires a 5V Trident, however, so not as quick to change as we would like. We are almost there, however.
It's already in the works. It requires a 5V Trident, however, so not as quick to change as we would like. We are almost there, however.
I guessed as much from your last post, I was mostly just expressing my excitement that what I had contemplated was already coming down the pipeline. 😀
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