Klein-hummel K8-AO8 User Manual
K8-AO8
8-CHANNEL LINE AUDIO OUTPUT TO K8 BUS
KEY FEATURES TECHNICAL SPECIFICATIONS
8 Channel analog audio output
+4 pro outputs on XLR
Output level trim and mute in software
Passive daisy chain link to next device
Output level meters
Device identification LED
System in sync LED
RS-485 control port
PRODUCT DESCRIPTION
The K8 digital audio distribution system transports
professional quality audio across a facility over standard
category 5 cable. It can be used for simple point-topoint connections or can form a distribution backbone
for sending up to 16 audio channels to multiple remote
locations.
The K8-AO8 offers the ability to retrieve 8 analog audio
signals from the K8 bus. Single AO8 devices can select
from audio channels 1-8 or 9-16.
The system is fast to implement and requires no
configuration. It is easily connected together with up
to 200 meter lengths of category 5 cable. For advanced
applications the entire system may be controlled and
monitored from a single connection via RS-485 or
optionally with Ethernet or USB adaptors.
Frequency Response 20 Hz – 22 kHz
Signal to Noise Ratio >100dB(A)
Output Balanced analog audio, XLR-M male
Output Level +4 dBu, +22 dBu Peak
Output One K8 passive daisy-chain outputs
Control RS-485, DB-9 female connector, open
Optional USB adaptor
Optional Ethernet adaptor
Termination Switch 4-position DIP
Digital Audio Format 48 kHz sampling rate, 24 bit, proprietary
Latency ½ millisecond worst case, analog in to
Power Requirements 100 – 240 Volt, 50-60Hz, 15 Watts
Front Panel Indicators Power, signal present, signal nominal
Rear Panel Indicators Sync, Wink
Weight 7 lbs / 3,2kg
Dimensions EIA Standard 19” Rackmount 1.75” high,
Operating Temperature
Range
connector x 8
published protocol 38400 Baud, 8 Data, 1
Stop, No Parity
analog out
IEC power cord connector
level, signal peak level
8 “ deep
0…70°C
The K8 bus has a total analog in to analog out latency
of 0.5ms making it useable in both distributed and live
performance settings.
K8-AO8
8-CHANNEL LINE AUDIO OUTPUT TO K8 BUS
APPLICATIONS
For large paging and background music applications pull a single category 5 cable out to each remote amplifier location
or daisy chain from one amplifier room to the next. All locations have access to 16 channels of digital audio without
concern over ground loops or induced noise.
Use K8 as a mini snake for sending audio feeds from an auditorium out a remote broadcast truck.
Mount a K8 device in a cluster of powered speakers and drive the entire cluster with a single category 5 cable.
Use K8 as a digital snake between the mixing console and the amplifier racks. Put another K8 branch and output device
on stage to drive the stage monitors.
Distribute central background music and paging out to individual venue systems in cruise ships, entertainment facilities, convention centers, schools and conference facilities.
ARCHITECT & ENGINEERING SPECS
The audio transport system shall carry 16 channels of digital audio integrated with bi-directional remote control and
monitoring data over a single category 5 cable up to 200 meters in length without being actively refreshed. The digital
audio format shall be uncompressed, 48kHz sampling rate, 24 bit quantization depth and shall have a total latency from
analog to analog through the transport system of less than 0.5 milliseconds. The system shall pass audio when powered
up with no software configuration required. The output from the digital audio system shall be via an 8 channel analog
decoder with XLR male connectors mounted in an EIA standard 1 unit rackmount case with universal voltage power
supply. The signal to noise ratio of the system shall be greater than 100 dB and the audio input device shall drive 2
individual category 5 cables to a length of 200 meters.
The output device may be passively daisy-chained to other output devices to extend the K8 bus without. An RS-485
control port shall allow remote monitoring and control of all devices on a single digital audio leg. Output signal levels shall
be +4 dBu, with a peak level of +22 dBu, with software adjustable attenuation .The unit shall indicate audio signal present,
signal nominal and signal peak conditions for each channel on the front panel.
System Sync and device identification shall be shown with lighted indicators on the back panel. Termination of the digital
audio and control lines shall be made with DIP switches on the rear panel. The analog audio input to the digital audio
system shall be K+H K8-AO8.
K+H Vertriebs- und Entwicklungsgesellschaf t mbH
Auf dem Kessellande 4A
30900 Wedemark
Germany
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