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© 1990-2021 - All Rights Reserved - ECdesigns

https://www.ecdesigns.nl

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8 17

PowerDAC-S 

PAGE 3

POWER & 
TEMPERATURE

Output 
Voltage

shifts

attenuation 
in dB

dissipated 
power

output power 
in mW  for 
2      4      8  

heatsink 
temp rise

heat sink temp 
@20 ºC

Volume

-

   6W

  1 ºC

21 ºC

0

4.8Vpp

4

-36dB

 36W

0.97 - 0.86 - 0.62

  9 ºC

29 ºC

1

6.5Vpp

4

-33dB

 50W

1.95 - 1.72 - 1.25

13 ºC

33 ºC

2

4.8Vpp

3

-30dB

 36W

3.90 - 3.43 - 2.50

  9 ºC

29 ºC

3

6.5Vpp

3

-27dB

 50W

7.81 - 6.78 - 5.00

13 ºC

33 ºC

4

4.8Vpp

2

-24dB

 36W

15.62 - 13.75 - 10.0

  9 ºC

29 ºC

5

6.5Vpp

2

-21dB

 50W

31.25 - 27.5 - 20.0

13 ºC

33ºC

6

4.8Vpp

1

-18dB

 36W

62.5 - 55.0 - 40.0

  9 ºC

29 ºC

7

6.5Vpp

1

-15dB

 50W

125 - 110 - 80

13 ºC

33 ºC

8

4.8Vpp

0

-12dB

 36W

250 - 220 - 160

  9 ºC

29 ºC

9

6.5Vpp

0

-9dB

 50W

500 - 440 - 320

13 ºC

33 ºC

10

8Vpp

0

-6dB

 65W

1000 - 890 - 640

17 ºC

37 ºC

11

12Vpp

0

-3dB

 90W

2200 - 2000 - 1400

23 ºC

43 ºC

12

16Vpp

0

0dB

114W

4000 - 3500 - 2600

30 ºC

50 ºC

Technical specifications

Содержание PowerDAC-S

Страница 1: ...1990 2021 All Rights Reserved ECdesigns https www ecdesigns nl 1 17 PowerDAC S User Guide...

Страница 2: ...ve speakers are recommended Highlights Custom DAPI receiver o ff ers high source immunity Directly drives speakers Toslink input Bit perfect tester built in IR remote control included Local volume con...

Страница 3: ...1990 2021 All Rights Reserved ECdesigns https www ecdesigns nl 3 17 Theory of operation Block diagram...

Страница 4: ...and batteries are short circuit for AC So output impedance in all 3 cases remains the same 0 5 R By changing the electronic switch settings we can have no voltage positive voltage or negative voltage...

Страница 5: ...is independent of speaker impedance dB 2 83 V at 1 meter distance this is speaker impedance dependant SPL in dB max dB the speaker can produce without break up measured at 1 meter 8 ohm speaker 2 83 v...

Страница 6: ...he speaker at digital silence the PowerDAC gets all power and the speaker gets no power The amount of power drawn from the mains remains constant regardless of the output signal One could compare this...

Страница 7: ...very low sometimes no movement is visible at all This translates to low distortion the larger the cone movement the higher te speaker related distortion This is why it makes sense to use lowest pract...

Страница 8: ...2 1 25 13 C 33 C 2 4 8Vpp 3 30dB 36W 3 90 3 43 2 50 9 C 29 C 3 6 5Vpp 3 27dB 50W 7 81 6 78 5 00 13 C 33 C 4 4 8Vpp 2 24dB 36W 15 62 13 75 10 0 9 C 29 C 5 6 5Vpp 2 21dB 50W 31 25 27 5 20 0 13 C 33 C 6...

Страница 9: ...the above Other To make sure that music data is received by the PowerDAC S without alterations you can use the built in bit perfect tester in the PowerDAC S For this we have 4 wav test fi les 44 1kHz...

Страница 10: ...17 Jumper settings Below are the jumper settings for PowerDAC S The FIXED OUTPUT jumper setting fi xes PowerDAC S output to volume level 9 Carefully remove or place jumpers using tweezers Note that wh...

Страница 11: ...can download the STM32CubeProgrammer The email sent to you contains the Download now button to start the download Goto link below to download the STM32Cube programmer Win Lin Mac https www st com en...

Страница 12: ...ion Now press the Connect button Then use the Open fi le button to load the fi rmware fi le Click the Download button to load fi rmware fi le in the PowerDAC S After message File download complete Pre...

Страница 13: ...to the directory containing the dfu util executable for your operating system Disconnect power cable from the PowerDAC S Use tweezers to set the red jumpers on rear of PowerDAC S to PROGRAM con fi gu...

Страница 14: ...te Control The IR Remote Control is included with the PowerDAC S The IR Remote Control can be used to Increase volume Decrease volume Mute Un mute The IR Remote Control can be recharged with the inclu...

Страница 15: ...ECdesigns https www ecdesigns nl 15 17 UT96 The UT96 is an optional USB to Toslink converter that can be used with the PowerDAC S It supports USB full speed 44 1kHz 48kHz 88 2kHz 96kHz Use standard U...

Страница 16: ...PowerDAC One possible solution is using an external input switch like the one below It has 4 S PDIF inputs and includes a remote control for selecting the active input Digital Audio Switch The PowerDA...

Страница 17: ...gi HAT or the Hi fi Berry Digi HAT you can connect the PowerDAC S using a Toslink cable It supports 44 1kHz 48kHz 88 2kHz 96kHz 176 4kHz 192kHz Be sure to set Audio Volume Control to fi xed at 100 set...

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