10
SECTION 2 –
Introduction; Features
Multiple Analog & Digital Audio Sources
Sources 1 – 8
are either Analog Stereo, or Coax
Digital Audio (PCM). Digital Coax has priority if
both are connected.
The Analog Sources have gain adjustment: up to
+10dB in 2dB steps.
Sources 9 - 12
are either Coax or Optical Digital
Audio (PCM). Only one connection is allowable to
each source.
Sources 1 -12 have programmable delay: up to
600ms - 5ms steps.
UPnP enabled Media Source.
Source 13
(Media 1) has UPNP support also
known as DLNA, providing ‘Play from my Device”
functionality. The amplifier becomes a slave
device – or Media Renderer – and is controlled by
a UPnP controller, which is typically the Axium
App running on an iPad or Android Tablet, but can
be any generic UPnP player.
Regarding generic UPnP player:
•
An AX
·
1250 has sub-devices implemented for
each zone. The zone where music is to be
played is selected from the Media Renderer
list in the UPnP player.
•
Starting playback in any given zone implicitly
selects the media source in that zone. If the
media source is already in use playing to
another zone then the UPnP player will take
over control.
Source 13 (Media 1) may also stream from
Internet Radio services like Tune-In or Pandora,
and from a locally connected network share
including a NAS. Decoding of mp3, wav, m4a,
ogg, mp4, aac or flac music streams are
supported.
Remote Sources.
Remote Sources
(Lossless Audio via Ethernet):
Multiple remote sources may be assigned,
originating from a connected AX
·
1250, Mini4 or
Axium Media player.
Source Buffering and PCM streaming
Source 1 -12 have Digital Coax outputs for
connection to a local amplifier.
The amplifiers Zones may be streamed over
Ethernet using Axium’s proprietary Low Latency
Lossless Audio Stratagem (LLLAS). The Audio
streams can then be accessed by connected
AX
·
1250 or Mini
·
4 multi-zone amplifiers.
Amplifier Zones
Six separate amplifiers independent yet integrated
control.
Each zone has controls for bass, treble, balance,
loudness, gain, mono and maximum volume
limiting – useful for protecting connected
speakers.
Amplifiers are rated 55 Watts into 8 ohm loads,
and 75 Watts into 4 ohm loads with < 1% THD.
Power On Volume
Each Zone may be set to a specific volume level
at Power ON.
Preamplifier Zones
Two separate preamplifiers with up to 3.5V
RMS
output level (+14dB gain).
Each zone has controls for bass, treble, balance,
loudness, gain, mono and maximum volume
limiting. In addition each zone has a low pass filter
that when selected only passes low frequency
audio for driving Active Subwoofers.
When the low pass filter is selected the Tone and
loudness controls are defeated.
Thermal Control
There are two progressive levels of thermal
control:
•
The amplifier volume is reduced 20dB.
•
The amplifiers are shutdown until the
temperature reduces below the first level.
Care should be taken to ensure adequate
ventilation – see “Safety instructions” on page 4
Amplifier ON Status – “Amp-On”
Each zone has AMP-ON status: 12VDC OUT on
the rear panel connector: (1, 2, 3, 4, 5, 6, 7, 8).
The ‘AMP ON’ output’s are protected against
shorts.
96 Zones
There are 96 zones of possible control.
On an AX
·
1250 amplifier each zone must be
different, however in a multiple amplifier stack
same zone amplifiers are possible – they simply
mimic every parameter.
