Update 7/15/18: I just stumbled across by far the most detailed document I have ever seen on Black Gates™ and it is by Jelmax (the creators of the technology)! See the 107 page PDF here: Blackgate_Tech_Note_Compilation. Cable used between the FUN01’s Coax output and the Siglent SDS 1202X-E : […]
Old Meets New: Kenwood’s C-2 “Basic” Pre-amp gets a Burson Audio V6-OPA Facelift!
Update 6/2/18: I completed the discrete op-amp modification after I got the replacement diodes. You need to replace Diodes 11, 12, 13, & 14 with 16V Zener diodes. If you fail to do this, your op-amps will be getting +18 and -18V (36V total). This is a pretty high voltage to use on op-amps, these […]
High Res Photos of My New Sprague Tel-Ohmike TO-6A
Update – May 15, 2018: I have almost finished restoring the bottom of the unit (where most of the components are) and expect to have it working in the next week or less! Update – May 12, 2018: Here is the Schematic with the parts labeled, this way you can easily see where you are […]
Ran Down (1st) ES9038PRO DAC main cause of the NLOCK (~ 4 months of troubleshooting showed me, it was not the dedicated TCXO clock module):
This single loose solder ball (could have fallen inside the enclosure at any point) might explain all the problems I had with getting the DAC to lock on to any audio signal. It would be a great job if it wraps up the issues. Stay tuned to find out if I was right! […]
One More Speed Bump.. (ES9028Pro vs. ES9038Pro Power Requirements)
Once again the values needed for the power to the DAC have changed, waiting yet again on the correct transformer.
“It’s the final countdown!” (to the) HiFi Discrete Transistor Op-amp showdown. Burson Audio vs. Orange Amplification Amplification! (DSD256+)
I wanted to give anyone still putting up with my unusually long delays between reviews a sneak peak of what is coming soon! I have everything ready to go for my new level of analytical audio reviews except for the matching transformers needed. Instruments include Potomac AA-51 audio analyzer DDS 25Mhz Signal Generator Fully Functional […]
Pic of Preamp Demolition. Also the ESS ES9028Pro DIY build + Amanero (DSD512 I2S native) Arrived!
Here is my first try at a meaningful picture collage to give viewers some update on my progress. However, my work has passed the points shown here now, but you can’t always build and be a photographer. Some are lost due to difficulty or annoyance/burns from irons telling the photographer in you to hush and […]
100W Power Amplifier x2 Design (Mono-block style) + Toroidal Transformer
Project MXercury-Lindberg 50SE/160VA: At this point I can’t comment on the functionality/performance of the NobSound™ MX50 SE kit, but I wanted to make sure to post a few pictures that are better and more up to date (w/ parts in the kit) than the sale images on most sites. I am waiting on my Avel […]
Digital Logic eHW2 and eHW3
Right now this is a place holder until I finish up eHW3. eHW2 was to build a 4-bit full adder w/ half of the adder only using a double 4-to-1 MUX IC (74ls153) with the other half being an assortment of ICs to create a traditional 2 bit full adder.
My First Debugger!! (Really just multiple voltage probes)
While working on my digital logic project I ended up accidentally creating my own little debugging circuit, although when it comes down to it this is just a truth table/multiple voltage probes.