My Choral housed Chord Mscaler

[Reactcore]

Hi! Thanks for replying. I will need a transmitter and a receiver OPTO-DX right? I asked about the SRC-DX because a good used unit is for sale.

OptoDX comes as a set of TX and RX units.

SRCDX is mostly used with software upsampling and to bypass a Chord DAC's USB chip.

 

[jjazzy]

Very verrrrryyyyyy fcking cool!!!!

 

[Amberlamps]

Where is the FPGA on the mscaler, I can’t remember if it was on top or the bottom but, in the pictures I can’t figure out where it is, as all the chips look too small to be it, is it on the top or bottom of the pcb ?

 

[Meridian7]

Where is the FPGA on the mscaler, I can’t remember if it was on top or the bottom but, in the pictures I can’t figure out where it is, as all the chips look too small to be it, is it on the top or bottom of the pcb ?

It's on the bottom of the pcb, and with heat paste it "touches" the whole chassis as a cooling mass.

 

[Billy Kueek]

Better go after OptoDX instead of SRC. Isolate your TT2 from noise.

When I order the Opto-DX with the standard optical cable pair, I will need another pair of BNC cables when used with M-Scaler and TT2 right?

 

[Reactcore]

When I order the Opto-DX with the standard optical cable pair, I will need another pair of BNC cables when used with M-Scaler and TT2 right?

You need two sets of coax cables, not shure if theyre all standard supplied from Audiowise

 

[Jawed]

When I order the Opto-DX with the standard optical cable pair, I will need another pair of BNC cables when used with M-Scaler and TT2 right?

At the TT2 end, you can in theory use this:

https://audiowise-canada.myshopify....cts/articulating-bnc-male-to-bnc-male-adapter

but worth emailing to check.

 

[Billy Kueek]

You need two sets of coax cables, not shure if theyre all standard supplied from Audiowise

I currently uses a 2 x BNC from M-Scaler to TT2. I can purchase a set of OPTO-DX with 2 x standard BNC (0.5M). For the setup, I’ll need to use the 2 x standard BNC from M-Scaler to OPTO-DX Transmitter then use my current 2 x BNC from OPTO-DX Receiver and then another 2 x BNC cables to the TT2, am I right? I’m really a dummy in this

https://audiowise-canada.myshopify.com/products/opto_dx?variant=28682909450300

 

[Billy Kueek]

At the TT2 end, you can in theory use this:

https://audiowise-canada.myshopify....cts/articulating-bnc-male-to-bnc-male-adapter

but worth emailing to check.

The OPTO-DX has a Transmitter and a Receiver. I’ll need 2 x BNC cables from M-Scaler to Opto-DX Transmitter and then a 2nd pair of BNC cables to the Opto-FX Receiver followed by a 3rd pair of BNC Cables to the TT2 right? This means 3 pairs of BNC cables altogether?

 

[Jawed]

The OPTO-DX has a Transmitter and a Receiver. I’ll need 2 x BNC cables from M-Scaler to Opto-DX Transmitter and then a 2nd pair of BNC cables to the Opto-FX Receiver followed by a 3rd pair of BNC Cables to the TT2 right? This means 3 pairs of BNC cables altogether?

Not at all.

The second pair of BNC cables should be optical.

The third pair of BNC cables could be the the articulating adaptors instead.

 

[Reactcore]

I currently uses a 2 x BNC from M-Scaler to TT2. I can purchase a set of OPTO-DX with 2 x standard BNC (0.5M). For the setup, I’ll need to use the 2 x standard BNC from M-Scaler to OPTO-DX Transmitter then use my current 2 x BNC from OPTO-DX Receiver and then another 2 x BNC cables to the TT2, am I right? I’m really a dummy in this

https://audiowise-canada.myshopify.com/products/opto_dx?variant=28682909450300

Its Mscaler > double BNC coax > OptoDX transmitter > double optic cable > OptoDX receiver > double BNC coax > TT2.

 

[esmit]

Its Mscaler > double BNC coax > OptoDX transmitter > double optic cable > OptoDX receiver > double BNC coax > TT2.

Personally I prefer the optical solution @Reactcore can provide.

 

[Reactcore]

Personally I prefer the optical solution @Reactcore can provide.

But you have the only boxed outboard dual optic design i made for a TT2

I just never started to sell them premade

 

[Ballszilla]

I would buy one if you premade them Working from schematics is beyond my skillset

 

[Somatic]

As anounced today its time to post about the boxed optic link.

It uses the schematic as posted earlier and the PCB design for assembling the components. Instead of using a CNCed housing i went for plasic boxes which i found on Aliexpress as small as possible to be placed on a TT2. Also this can be added to a Qutest and Mscaler. This is a pluggable addon so TT2 and Mscaler wont need to be opened.

I stated earlier that i dont want ro use a external PSU or batteries and want to be on the same groundplane as TT2 and HMS so no groundloops can excist bringing RF in.

So i came to the idea to pass both 15v power feeds through my link boxes using two 5.5/2.5mm DC barrel sockets hard linked. Then tap the 15v and using a simple transistor and resistor devider to make 5v for the link.
For Qutest this can be skipped as it already uses 5V. I could use USB microB or C then.

Components used


The hardest part is to solder the tiny Nand logic chips on the PCB, but using extra flux and leaded tin this goes much easier.


After finishing the PCB's drilling holes in the boxes to fit the BNC's, Optics and DC sockets


Jumping to the mounted PCB and components. It just fits leaving few space left.


The receiver side has few componens as its circuit is integrated in the barrel.
It only needs power, a resistor to pull the output up to ttl level and a decoupling capacitor in the signal path.


So closing the lids gives the final product
I got ready made 10A link cables for passing the power through.


Both connected to Mscaler and TT2


I placed the left DC socket on the receiver unit backwards to give space for a larger RCA plug on TT2


With a 0.5m fiber attached


Passing power through


Now its time to test the link next to a ferrited coax solution..


The sound impressions are for a next post.. perhaps by the new owner of this link set

Thanks for reading!!

Can these be used on the Dave + HMS as well? Do these replace the Wave cables? Do you sell these? Thanks.