Search found 1018 matches

by Thermionic Idler
Sun Jun 25, 2023 4:19 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Power supply boards completed and ready for installation. Had some fun and games with the sigma22 board (bottom right) where R10 had to be desoldered and replaced with a different value. Turns out getting solder out of a through-hole with a simple solder sucker is nigh on impossible if it's connecte...
by Thermionic Idler
Wed Jun 21, 2023 6:32 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Sit-rep, not a whole lot to report. The order went off to Schaeffer early last week for the panels, and I am still waiting for them to ship. I have to populate some PCB's - the ones for the mains transformers arrived from JLC this week and I also have to put together the Salas power supply board, as...
by Thermionic Idler
Mon May 29, 2023 8:39 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Final layout design pretty much done - when I added the RFI shielding mains inlet I realised there wasn't enough clearance between it and the power transformer boards so they all had to be moved back slightly. This is why we lay out everything in advance kiddies (at least I do, the money that Schaef...
by Thermionic Idler
Sun May 28, 2023 6:16 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

With every build, there is a tedious job that we dislike, for me this is one of them. Painstakingly modelling each PCB board in TurboCAD to map out where all the holes are drilled, so that there is an accurate 'map' to eventually send off to the machinists, and all the board pin headers / sockets wi...
by Thermionic Idler
Sat May 27, 2023 1:06 am
Forum: Assorted Stuff
Topic: Landrovers...
Replies: 69
Views: 37785

Re: Landrovers...

When I see episodes of Bangers and Cash I have a hankering for an old classic like a P6 - could I deal with the reality? Don't know really. We have a middle-aged Lexus hybrid saloon that fulfils our needs better than any car I've had in the past - 50mpg leather-clad silent waft-tastic luxo-barge tha...
by Thermionic Idler
Fri May 26, 2023 6:52 pm
Forum: Assorted Stuff
Topic: CAD systems...
Replies: 8
Views: 3745

Re: CAD systems...

Bugger - WIndows only. I've been enduring TurboCAD Mac for years to do all my chassis design, it's a bit flaky and crashy at times (oh how I love when it falls over during file saves, irreparably corrupting them in the process) but everything else I've looked at either has an unfathomable interface,...
by Thermionic Idler
Thu May 25, 2023 11:38 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

PCB design done for the power transformers to mount to. All PCB dimensions and hole locations are now known, meaning that I can go ahead and finalise the chassis layout this weekend. :D

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by Thermionic Idler
Thu May 25, 2023 8:51 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Orders went off to Mouser and Digikey tonight for the Beaglebone board and various bits and bobs like the three power transformers and remaining parts for the Salas power supply. Next I need to design a PCB for soldering the three power transformers onto. Once those get here I should have everything...
by Thermionic Idler
Wed May 24, 2023 1:53 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16439
Views: 4652824

Re: Nothing In Particular

Is that a double layered perspex lenco ptp ? Double layer granite Garrard 301. https://www.peakhifi.co.uk/cgi-bin/ecom.cgi?Command=ShowProduct&db_pid=18 The 301 is Ray Clark's 'solid chassis' prototype, so it still has the 301 motor and through-hole fixing bolts unlike the current offerings: ht...
by Thermionic Idler
Wed May 24, 2023 10:40 am
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Yikes! :shock: :) TBH that won't be for a while yet (and 12AX7's probably don't need 1000V B+). Once this DAC is done, I am going to have to freeze the budget for a time on new projects as we have some matters on the horizon that need to take priority first. So there'll a bit of designing and model...
by Thermionic Idler
Wed May 24, 2023 12:30 am
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Re: Another RTZ SDM (DSD) DAC

Cressy Snr wrote: Tue May 23, 2023 7:13 pm Look fwd to seeing/hearing some of this stuff. Things have certainly changed over the years at Owston. Scary, humming, 1000V breadboards seem to have gone the way of the Dodo.
Until I turn my attention to my next phono stage...
by Thermionic Idler
Wed May 24, 2023 12:13 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16439
Views: 4652824

Re: Nothing In Particular

Here is why I have a substantial perspex hinged lid on my turntable...

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by Thermionic Idler
Mon May 22, 2023 6:22 pm
Forum: Everyones Projects
Topic: Another RTZ SDM (DSD) DAC
Replies: 21
Views: 9561

Another RTZ SDM (DSD) DAC

It's high time I spawned my own RTZ DAC thread so that Ray gets some peace and quiet in his. Current sit-rep. Ray has very kindly lent us the breadboard he recently completed, which has his power supplies and Beaglebone Black, together with a DSD'it PCM to DSD upsampler 'cape' that I have purchased ...
by Thermionic Idler
Tue May 16, 2023 1:20 am
Forum: Everyones Projects
Topic: RTZ SDM (DSD) DAC
Replies: 88
Views: 31617

Re: RTZ SDM (DSD) DAC

We got the breadboard up and running tonight and I have to say - WOW!! :D Admittedly I have been rather focussed on vinyl as my main source and a lot of investment has gone in that direction, but digital just took a quantum leap with this DAC. This gets pretty close to analogue for musical involveme...
by Thermionic Idler
Sat May 13, 2023 12:09 am
Forum: Everyones Projects
Topic: RTZ SDM (DSD) DAC
Replies: 88
Views: 31617

Re: RTZ SDM (DSD) DAC

Thanks Ray, we'll hopefully get an opportunity to get it installed next week sometime. Looking forward to it. The vinyl replay was (theoretically) slightly sub-optimal, as we are taking the phono stage up to NW Analogue tomorrow and I'd reconfigured the SUT's the previous evening to 1:32 to match th...