B&K HT 70 manual Front and Back Panel

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FRONT AND BACK PANEL

6.Headphone Jack - Headphones having a standard 1/4” stereo plug can be connected to the headphone output.

7.Control Output - 1/8” Mono Mini-jack (Tip+ Ring -) source of 12VDC (100mA) Control output for controlling external devices, such as amplifiers and projection screens. A 12V (100 mA) signal is sent or stopped when the IR, RS-232 or Ethernet com mand for CTRL+ or CTRL- is sent.

Amp Enable - 1/8” Mono Mini-jack (Tip+ Ring -) source of 12VDC (100mA) Control output for controlling external devices, such as amplifiers and projection screens. A 12V signal is sent when the preamplifier is out of the standby mode.

8.Restore - Sometimes it is advisable to restore the unit to a factory default state in order to clear problematic system opera- tion. Pushing in the button for 5 seconds will restore all settings to factory default. A factory restore will clear all system set tings, Audio and Video preferences. Restore may be seleced by simultaneously pressing Sleep, Up and the Right Encoder knob.

9.USB 2.0 - USB 2.0 connection for use of configuring and controlling the preamplifier. Feature is not enabled at this time. Please see www.bkcomp.com for updates, when available.

10.RS-232 Control Port - RS-232 RJ-45 input/output for computer interface and RS-232 serial controller applications. Ethernet Control Port - Ethernet RJ-45 input for flashing the software in the preamplifier. Also used for computer interface and Ethernet control applications.

11.FM/AM Tuner - Respective connections for attaching the included AM and FM tuner antennas for internal tuner reception.

12.Coax Digital Audio Inputs - A total of 8 coax digital audio inputs for connecting coax digital audio signals from the source to the preamplifier.

Coax Digital Audio Output - A single coax digital audio output for use with another audio device. The audio output is sourced from the selected audio input.

13.RCA Surround Outputs - 7.1 Surround outputs for driving external power amplifiers or powered speakers. Channels are labeled respectively.

14.RCA Analog Audio Inputs - A total of 8 stereo analog RCA inputs to be configured for use as 8 stereo pairs of analog inputs, a 5.1 analog input (for use with inputs 5 through 7), or a 7.1 analog input (for use with inputs 5 through 8). Configuration settings can be found in the menu and BK Suite.

RCA Analog Record Output - A total of 1 stereo pair of analog RCA outputs for connecting an analog RCA audio signal from the preamplifier to the recording device.

15.Digital Optical Audio Inputs - A total of 8 optical digital audio inputs for connecting optical digital audio signals from the source to the preamplifier.

Digital Optical Audio Output - A single optical digital audio output for use with another audio device. The audio output is sourced from the selected audio input.

16.Component Video Inputs - A total of 8 component video inputs for standard and high definition video signals. Component Video Outputs - Component video pass through which also carries sources upconverted to component video.

17.AES-EBU Input - Connections for a digital balanced input from a source with a AES-EBU output.

18.Balanced Surround (XLR) Outputs - Connections for 7.1 speakers to connect to an amplifier(s) with balanced inputs. Balanced Source (XLR) Inputs - Connections for a stereo, analog input from a source with a balanced output.

19.IR Flashers, All IR Output and IR In - 1/8” Mono Mini-jack connections for IR routing. Flasher outputs allow IR routing for up to 14 source components. All IR Output will send all IR information being sent to the unit from the Keypad input, the front panel or the mini-jack IR input. IR Input allows an IR signal to be sent into the unit in order to control the preamplifier

or the source components.

20.Keypad Connection and IR Daisy Chaining - RJ-45 Keypad Connection provides a 12VDC power, common ground, RS- 232 transmit, IR Data IN, and 12V control output trigger. The preamplifier will support up to 5 daisy-chained B&K keypads. The IR Chain connection would link the preamplifier to a CT product for full two-way communication.

21.Three-position Phoenix Adapter - Phoenix connection for using a Page / Event system with the preamplifier. Feature is not enabled at this time. Please see www.bkcomp.com for updates, when available.

22.HDMI Inputs/Output - High Definition Multimedia Interface (HDMI) connections including 6 inputs and 1 output. Connections carry both the digital audio and digital video signal simultaneously.

23.AC Input Receptacle - For attaching the supplied AC power cord to the unit.

24.AC Fuse Holder - Holds the AC line fuse. Replace only with same type and value 2A fast blow. Note: The voltage rating label is located on the AC fuse holder cover plate.