Kategorie: DIY

PROJECT IV: PART 2 / fast update / benefits from Dual (+12V-0–12V) DC

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so, 😉

fast update: as my original plan (using the massive Cyrus-PSX-talema transformer (see posts before) + some AC-DC rectifier for dual-DC)) is now suddenly “obsolete” cause i´ve got no voltage output at the end of the chain (don´t know why at present) i used the power supply for the video-section (+12V-0V–12V) from the BDP9500 and my green ES9038Q2M for finally dual DC power supply..and first impressions ?

1.for the dual DC-thing: absolutely more exact left/right->absolutely better “channel separation” higher S/N i guess too, more “lively”..i knew and read a lot about it, and indeed, it has a great impact of the output (want not to go back to single DC) +

2.the high-class power-supply chain (from the BDP9500): absolutely lower “noise-floor”; everything more “lively/airier”, absolutely higher S/N-ratio (is absolutely clear->if u remove the background-noise, everything will get more in the “foreground” and is more clear + lively)..

i miss a little bit the “attack” which i got more, the more voltage i put in (IMO) and as said, the manufacturer says “..dual 15V (+15V-0V–15V)” and have now only 12V; will look for a way to solve this..

another result from this 2 “optimizations” is an absolute greater “presence” in the mids/vocals (here on Mission-speaker)..by that i´ve got the feel that i have to put the volume on the amplifier a little bit “up”, to get to the “sweet spot”->guess a good alternative could also be to reduce the DAC-volume via the onboard/onchip-volume-control via some poti to 90%-95% (and turn the amplifier up)->had this first checked with the ES9028Q2M some years ago 😉 -> http://essabre-90xx-rpi.sfb2.com/?p=440 and the result was fine..(the disadvantage is maybe a little bit worser SQ (because of the “altering”); have “to balance/check” it out) 

Conclusion: with these 2 “optimizations” you get some really interesting new ways/turns concerning the sound/character !! have now to adopt it in further testing out; dual DC + high quality power supply (+less EMI-noise +such)->to recommend !! 😉

greets for now (+ more to come) !! 😉

Project IV: Part 1 / Philips BDP9500-case + ES9028/38Q2M + USB-bridge + Pi4 + stuff

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so, 😉

as i´ve got today an old Philips BDP9500 (couldn´t read any discs (“no disc”) anymore, cheap, Ebay, 18€ !! (incl.shipping)) + also this Dual AC to DC rectifier->http://essabre-90xx-rpi.sfb2.com/?p=2708 i can finally start/begin with some “example”-tutorial how to build your own DIY-DAC !! (main “goal” on this essabre-site 😉 )

it´s only an example/showcase how to eventually do it..(a little story to begin with now):

okay, as this BDP9500 is trés chic 😉 (a really nice “blue”-light at the bottom) + massive, brushed, aluminium case and has this separated, dual power supply (one via some toroidal with 18V1 + 18V2 for audio) and one “power-line” with +12V-0–12V for the video section (+ also with some +5V/GND-lines)(i knew this “hifi-high-end-build-up” from the BDP9700 “Fidelio”(599€)->http://essabre-90xx-rpi.sfb2.com/?p=2576 and thats why i bought this BDP9500), we have now to find a way how to fit the other parts in it (the ES9028/38Q2M-board, the ESP32, AK4113,LCD1602 + oled-display (maybe a Pi 4), usb-bridge etc..)

it is really a long story/tutorial (cause i wanted to post the circuit diagramms from the Parts of the BDP9500 too etc..), a lot to do, and so i will post also a lot of steps (parts(ideas) “in between”)..

Part 1 (today):

as i´m relatively “unsure” if this +12V-0–12V works (from the second power-supply), i will use an old ES9028Q2M (want not to “destroy” some new ES9038Q2M) ->…

more to come …!! 😉

some quick and dirty pics from the DIY-DAC / best sound via Pi4->SkysongXMOS-Bridge->ES9038Q2M (with Burson V5-D)

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so, 😉

bought today again some little stuff for the main-goal here on the site->the own “DIY-DAC/network-streamer” 😉 ..

decided to built it with a separate power supply/-unit (like for example these Mission-PSXs combos (have often posted about it)..(to eliminate any electronical interference/-noise)(the original “combos” were only for cleaner/stronger “power”)->

and so, i have ordered some dual voltage AC/DC-converter (rectifier), because the manufacturer always say “..best results with a dual 15V-0-15V power source/supply” (although the chip itself (ES9038Q2M) runs with 3,3V VCC max. (see this Datasheet ES9038Q2M (LINK))..(guess its about the LM78/9X “.fixed linear voltage regulator integrated circuits” (i think they took the fixed 15V-version of it)..

anyway, separated today the transformer/power-supply for the ESP32s,oled-display,AK4113 digital receiver etc. to a separate case (in this case also the massive Cyrus-PSX toroidal-transformer (dual 27V) will find his housing))

(Ebay, AC/DC (max. 36V) to 5V-15V Dual Voltage Converter Board Mini Rectifier Power Supply Module, 6€ ->LINK )

and okay, as “i fired it up” with the Pi4 + Volumio and my other XMOS-bridge (Leaf-audio), got problems in detecting it by the Pi, i used then these absolute wonderful Skysong-XMOS-bridge !! (posted also a lot of it before->http://essabre-90xx-rpi.sfb2.com/?p=1883 ) and got these beautiful tune/sound again !! (and its btw. only with these Skysong-bridge (the Leaf-audio (XMOS too) for example sounds lightyears worser)..

got “dynamic-wise” about minimum 5db 😉 more “frequency-spectrum” then with my Bluray-HDMI-I2S-extraction-combo (and thats almost the best/optimum combo for this transporter/hdmi/i2s things)..

absolutely fantastic !! (as said “the Pi is made for music” + these wonderful “best XMOS-implementation” Skysong-bridge !!) 

that was it for now, more to come, many greets and stay tuned !! 😉

Panasonic DMP BDT 385 / playing finally .dsf/.dff-files / Toroidal transformer – Talema (Cyrus PSX) 27,9V

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so, 😉

got today finally a Panasonic DMP BDT 385 (got it cheap from Ebay, 17€, faulty, couldn´t recognize a bluray-disc anymore) to test the DSD-functionality + to compare it with my other Sony + Philips Blurayplayer here..

very nice, detect and play any .dsf/.dff-files which i have on my usb-drive..the Sony only detects Sony-“tagged” .dsfs and the Philips only Philips .dffs 😉 ; the pansonic plays them all + also other “non-tagged”-DSD-files->stupid..

by that, the “quantizing-noise” (and i think thats mainly the “white noise”) is absolutely more less via my hdmi-extraction-board + ES9038Q2M-combo here then via the Sony for example; have to test + evaluate it more..(its still an I2S-connection problem i guess->soldering)

DSD-files are btw. outputted at 88.2/24 via toslink (besides over HDMI of course)->

picture-quality + handling-/usability-wise its a lot more “basic” then with the Sony BDP-7200 for example..thought first why Panasonic have such a good reputation, i felt it too “basic”, but in the end its okay (but its really about your personal taste and overall the Sony is better (for my taste)).

by that i got by chance a really, really, massive (guess 5kg !! or so) Talema toroidal-transformer 220V/2*27,9V..was originally from a Mission Cyrus PSX only power supply expansion (posted a lot of  it before)-> heavy bummer !! 😉

wanted originally some 15V-0-15V toroidal for the chinese ES9038Q2M but will use it as power supply for the DAC and for the rest of things in our “DIY-DAC” !! (esp32s,arduino-display,usb-bridge,AK4113-digital to i2s receiver etc..)

will post a lot more about it, cause that was the “main goal” with this site->our “DIY-DAC !!” 😉

greets or now + much more to come !! 😉

ESP32-CAM-MB USB Programmer / 2$ / esp32-mjpeg-multiclient-espcam-drivers

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hi folks ! 😉

no worry, more “hi-fi” is coming in the next weeks but found today by chance this little thing->ESP32-CAM-MB USB Programmer !

should save the trouble in connecting the ESP32-cam-board via a ftdi-programmer (Essabre-Link here->http://essabre-90xx-rpi.sfb2.com/?p=2269) and reset/uploading a sketch/put in flashing-mode..

u can get them everywhere on ebay or aliexpress for example->https://de.aliexpress.com/item/1005002265308564.html (guess 2$/6$ with ESP32Cam-board)

Nice tutorial in using it is again on “randomnerdtutorials.com/”->https://randomnerdtutorials.com/upload-code-esp32-cam-mb-usb/

and also nice tutorial again to install the Arduino-IDE + the esp32-packages->https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/

UPDATE: had problems in streaming with the “normal” “ESP32-cam-webserver”-.ino  in the Arduino-IDE examples-folder to more than 1 client->this library (rtos-based) should do the trick (up to 10 devices)->https://github.com/arkhipenko/esp32-mjpeg-multiclient-espcam-drivers

Full story here->https://www.hackster.io/anatoli-arkhipenko/multi-client-mjpeg-streaming-from-esp32-47768f

 

so, many greets for now and as said more “hi-fi” / ES90xx/Pro -things are coming again in the next weeks !! 😉 

again some new pics->DIY-DAC (ES9038Q2M) / 100.000 visitors..

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so, 😉

because we have almost a 100.000 !! visitors here on the site (hooray, tomorrow i guess 😉 ), i post some additionally pics on the improvements of the DIY-DAC..

I´ve added some 0.96OLED (I2C) to display the data-format and rate (DSD/PCM-44.1k-384k DSD256 and so on); by that i use also 2 new LEDs (blue for DSD and red for PCM) to make the dac more shiny 😉 ..

problem was to get the information through the usb-bridge if it got DSD or PCM..will post then more about it..

unfortunately nothing “more” new about these “whole” ess sabre-things, maybe then more, greets for now !! 😉

(fifth picture is from a “Copland CSA100”->Quad Mono Sabre)

DIY-DAC: Telekom Media Receiver 303A as case/with 12V/3A power supply->as audio-streamer with Rpi4 + XMOS-USB-bridge + ESP32 as display-controller..

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so, 😉

i´ve found a few days ago some “withdrawn from service” 😉 Telekom (uarghh ;-( )  Media Receiver 303A->was first interested in the internal HDD->500GB Seagate, but have seen then this has also a built-in 12V/3A power-supply and its from the dimensions almost ideally as some Raspberry Pi4-ES9038Q2M-audiostreamer !! (not soo big) 😉

Display-wise its a little bit limited (due to the available space (height)) in the front, but some LCD1602 will maybe do it fine..

found then an easy way to connect some to an ESP32 via I2C and via some “web-remotes” (see other posts here “Project-1” etc..) we can select via some photocoupler/relais the inputs of the ES9038Q2M (Coax,Toslink, I2S/USB), adjust the hardware-volume, filter-selection and so on and can display the settings on the display/LCD1602) !!

so far so fine, but this is a heck of a lot work to do !! 😉 ..

(i´ve planned to use Volumio on the raspberry ->easy controlling via the web-interface, DLNA-capable, MPD etc..)..

as said, here at first testing-out some aspects/parts for it and a first result by example is that these 3A makes the “blue” ES9038Q2M absolutely a little bit “airy(ier); had before some 2A power supply (12V)..

by that the “Leaf-XMOS-USB-bridge” (->http://essabre-90xx-rpi.sfb2.com/?p=2066) is better than first thought..

+ also my new “ESP32” will come to a new life 😉  (not to mention the Raspberry Pi4 2GB)

makes really a lot of fun here, and i will inform you about some further improvements !!

greets for now !! 😉

SFB2

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