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C1.2 Digital to Analog Controller

User Manual

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Summary of Contents for C1.2

Page 1: ...C1 2 Digital to Analog Controller User Manual...

Page 2: ...ney we kindly ask you to pay attention to the information contained in this manual The C1 2 as you will discover in the following pages is a Swiss precision product designed for ultimate performance a...

Page 3: ...4 4 1 2 User control knob 15 4 2 Operating modes 16 4 2 1 Normal mode 16 4 2 2 Shortcuts 17 4 2 3 Menu mode 20 5 Configuration 22 5 1 2 AUDIO SETTINGS 22 5 1 3 INPUT SETTINGS 22 5 1 4 DISPLAY SETTINGS...

Page 4: ...in the appropriate section of this manual 1 1 Digital input options DIGITAL IN HD provides CH Link HD AES EBU S PDIF RCA and TosLink optical input options ETHERNET IN HD provides an Ethernet connectio...

Page 5: ...compatible with both the X1 external power supply and the T1 Time reference external clock further upgrading musical performance As well as being highly configurable in terms of inputs and operation t...

Page 6: ...and airflow around and beneath the unit Do not operate it during periods of high ambient temperature 40 C or in extremely high humidity conditions Only use options and accessories specified or recomme...

Page 7: ...eir position on the rear panel will be extremely useful when you come to actually make connections and name configure those inputs Decide whether you will use the CH Precision supplied leveling ground...

Page 8: ...ewdriver Once this is done simply check that all four spikes show the same resistance to turning This means that the spikes are rigidly coupled to the supporting surface discs and equally loaded Repla...

Page 9: ...C1 2 User Manual 9 C1 2 DAC Controller X1 external power supply unit or other CH unit cosmetic caps stacking caps support discs Stacking the C1 2...

Page 10: ...ort for command interface CONTROL board or for audio playback and commands optional ETHERNET IN HD board 12 BNC clock input Provides 75Ohm or Hi Z input optional SNYC_IO board 13 Analog ground connect...

Page 11: ...will be fitted instead This also carries an Ethernet socket but in this case it is to allow connection to the CH Control app via the system control network which allows remote control of all system p...

Page 12: ...ctor are all standard audio Wordclocks 44 1 48 88 2 96 176 4 192 352 8 384 705 6 and 768 kHz audio Masterclocks 22 5792 and 24 576 MHz DSD bitclock 2 8224 MHz and atomic clock multiples 100 kHz and 10...

Page 13: ...and yet few low grade digital cables achieve much better than 10 tolerance when it comes to their impedance rating while the number of audiophile connectors that comply with 75 or 110 digital connecti...

Page 14: ...ont panel or the CH Control Android app 4 1 Front panel controls 4 1 1 Front panel 1 2 4 3 The standby LED lights up when the unit is in standby It is normally turned off during operation and lights b...

Page 15: ...ght E E and Central Rotate Left Right C C The central part of the knob also supports a push functionality There are two types of push Normal Push NP and Long Push LP For a Normal Push just press the c...

Page 16: ...incoming audio stream s original sample rate 2 Mute indication If the 7 symbol is present the output is muted 3 Analog output level Only displayed when the C1 2 is used as a preamplifier When C1 2 is...

Page 17: ...powered by an X1 external DC power supply Displayed elements for other configurations are similar The following table shows the actions of the user control knob in Normal mode 4 2 2 Shortcuts The C1...

Page 18: ...ETUP Enter Menu mode E External Rotate Left Shortcuts Modify parameter down when available PHASE POLARITY Shortcut display elements 1 Shortcut title Parameter for other Shortcuts title changes accordi...

Page 19: ...rameter Default action is to exit go back to Normal mode 3 Arrow indicating External Rotate Right E or Central Rotate Right C 4 Next parameter value If External Rotate Right E is applied the unit ente...

Page 20: ...ard E External Rotate Right Enter next menu level E External Rotate Left Return to previous menu level without saving C1 2 SETUP menu display elements 1 Menu title When entering a menu item the title...

Page 21: ...tment screen The following example shows the AUDIO PHASE POLARITY Parameter adjustment screen Other Parameters are similar but may show more or less choices for the Parameter value Once a Parameter is...

Page 22: ...Polarity Allows users to reverse the absolute phase polarity of the audio output Balance Left right balance control Channel mode Mono or stereo mode Max start volume Limits the C1 2 startup volume Ma...

Page 23: ...e this network offline or connect to it as either the Master unit it will transmit push button commands to all compatible client units or as a Client it will ignore push button entries and receive com...

Page 24: ...of this manual for more detail on firmware update procedure Factory reset Resets all parameters to their default factory values This can be useful if you made some changes that you don t know how to...

Page 25: ...basic operations The provided remote control is not intended to be used to configure the unit 1 Remote control activity LED 2 Mute Standby long push button 3 Volume up button 4 Volume down button 5 N...

Page 26: ...ed input Phase inversion PREVIOUS INPUT 5 Select previous enabled input Mono Stereo switch 6 2 Changing the remote control batteries If the Remote Activity LED fails to light then you will need to cha...

Page 27: ...buffer will get completely full if the source is slightly faster than the DAC or completely empty if the source is slightly slower than the DAC Either situation will generate a CLOCKING ERR notificati...

Page 28: ...RC for this input It will add an asynchronous sample rate conversion stage that has a wider locking range 7 3 C1 2 DAC Controller with SYNC I O board D1 5 or D1 CD SACD transport with SYNC I O board W...

Page 29: ...tributed to both the D1 5 D1 and C1 2 from the T1 The schematic below shows how to connect such a system D1 5 clock source SYNCHRO BNC 75 C1 2 clock source for this input SYNCHRO BNC 75 If in this con...

Page 30: ...r a UPnP server or with an online streaming service an RJ45 Ethernet cable is used between the C1 2 and the LAN local area network This cable enables data to flow from the network to the C1 2 while th...

Page 31: ...network C1 2 clock source for this input INTERNAL C1 2 clock source when using T1 for this input Synchro BNC 75 8 Returning to factory defaults The unit can be reset to Factory default settings by us...

Page 32: ...Updating the unit s firmware 1 Perform the operations described in section 9 1 2 Connect the USB stick to the USB port located at the back of your C1 2 unit 3 Navigate to the FACTORY SETTINGS menu and...

Page 33: ...nds after you turn the unit on 5 The unit performs the emergency firmware update Once the operation is complete the unit automatically goes into Standby mode Remove the USB stick and turn the unit on...

Page 34: ...utton 7 is displayed No sound There is no incoming digital stream for the selected input or it is at an FS Unknown is displayed unsupported sampling frequency Check supported audio format in the speci...

Page 35: ...are a software update on a FAT32 formatted USB stick and run the Emergency Software Update procedure again USB flash drive for firmware Please try another brand of USB flash drive e g Sandisk update i...

Page 36: ...work If this LAN has internet access it is possible to stream directly from your Tidal or Qobuz account using the CH Control Android app If you have a UPnP DLNA server connected to your network like m...

Page 37: ...and 5 6448 MHz DSD128 MQA encoded files ETHERNET IN HD Stereo PCM 16 to 32 bits fixed and floating point 44 1 48 88 2 96 176 4 192 352 8 384 DXD 705 6 and 768 kHz WAV AIFF FLAC ALAC MP3 and AAC files...

Page 38: ...signals incl clocks PCM 16 32 bits 44 1 768 kHz DSD 2 8224 or 5 6448 MHz AES EBU consumer format XLR connector 0 5 5Vpp diff 110 Ohm PCM 16 24 bits 44 1 192 kHz DSD DoP 1bit 2 8224 MHz Coaxial S PDIF...

Page 39: ...2 352 8 384 705 6 768 kHz Masterclock 22 5792 24 476 MHz DSD bitclock 2 8224 MHz High stability external clock 100 kHz 10 MHz 40 to 60 duty cycle square wave Clock output 2x BNC connectors 2Vpp 75 Ohm...

Page 40: ...y to correct the interference by one or more of the following measures adjust or relocate the receiving antenna increase the separation between the equipment and the receiver connect the equipment int...

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