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Assisted Listening (Audio Loop) Systems ADS/Signet
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PL1/K1 Portable Induction Loop Kit
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The PL1/K1 is a compact, lightweight,
portable audio-frequency induction loop amplifier capable of
generating a loop listening field of more than 100mA/m (the level required
by BS 7594) at distances greater than 1m from the unit itself. This provides
a listening field of approximately 1.2m˛.
Suitable for counter, table or desktop, it
is ideal for restricted person contact in areas such as banks, post
offices, reception desks, ticket booths and small meeting rooms. It
can be particularly useful in open plan offices because of its
portability.
Ready for use within seconds, the PL1/K1
facilitates easy and economical compliance with the Disability
Discrimination Act now in force. To help preserve battery life the
unit has an automatic shut-down feature after 10, 30 or 60 minutes (user
set).
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| Technical
Specification |
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| Power |
Internal 12V VRSLA battery
monitored against deep discharge |
| Battery Life |
Expectation 5 years under
normal operating/charging conditions |
| Charger |
Separate 230Vac plugtop charger
included |
| Shut-off |
Automatic shut-off timer with
10, 30 and 60min options |
| Frequency Response |
100Hz~5KHz |
| Operating Range |
Nominal 1m at 1KHz providing an
AFILS strength of >100mA/m |
| Distortion |
<1% at 1KHz, 1m distance and
100mA/m field strength |
| Dimensions |
300H x 250W x 100D mm |
| Weight |
1.7kg including battery |
ML1/K - Counter Kit with Microphone
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Everything needed for a high quality,
stand-alone, counter induction loop system. The double gang, wall
mounting amplifier fits standard UK 25mm back boxes and is ideal for
mounting under desks, counters or table tops to generate a loop-listening
field up to 1.5m. This makes it suitable for use in post offices,
banks, ticket offices and other reception areas. Features one 3.5mm
microphone socket with phantom power, one balanced line level audio input,
and indicators for input peak, mains on and loop strength. The
counter kit consists of
- ML1 Counter Amplifier
- Boundary microphone
- Counter loop cable.
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| Technical
Specification |
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| Listening Field |
1.5m |
| Amplifier Size |
H83, W44, D32 mm |
| Amplifier Weight |
300g |
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PDA 200E AKM1 - Meeting Room Kit with Microphone
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A meeting room induction loop kit covering an area up to 120m˛.
Consists of
- PDA200E Amplifier
- APM Boundary Microphone on a single gang plate
- 6m Belden 872B cable.
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| Technical Specification |
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| Coverage |
Up to 120m˛ |
| Amplifier Size |
H200, W273, D77 mm |
| Amplifier Weight |
2.9kg |
PDA 200/2 - Pro-Range 200m˛
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Induction Loop Amplifier
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A free standing induction loop amplifier
that can be rack mounted. Cable not supplied. Coverage up to 200m˛. |
Key features include
- a metal compensation control
- full compatibility with the 'Outreach
Plate' audio input extension system
- three level controls (mic., mic/line
and outreach)
- 3.5mm headphone socket (allowing true
monitoring of the output signal through headphones - not supplied)
- a compressor activity display.
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| Technical
Specification |
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| Mains Power |
230-240Vac |
| Inputs |
Line 6.8kohm balanced or
unbalanced
Mic 6.8kohm balanced
Outreach >10kohm balanced |
| Outreach Power |
16-21Vdc available from
amplifier Outreach Socket |
| Recommended Loop
Impedance |
0.5-1.0ohm at 1KHz.
Will drive higher impedance loops with reduced area coverage |
| Loop Drive
Current |
6A at 1ohm balanced |
| Metal
Compensation |
True 3dB/octave |
| Coverage |
Up to 200m˛ |
| Amplifier Size |
H80 x W380 x D220 mm |
| Amplifier Weight |
3.74kg |
| Rack mount
kit |
PDA RM. |
PDA 500/2 - Pro-Range 500m˛
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Induction Loop Amplifier
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A free standing induction loop amplifier that
can be rack mounted. Cable not supplied. Coverage up to 500m˛. |
Key features include
- a metal compensation control
- full compatibility with the 'Outreach
Plate' audio input extension system
- three level controls (mic., mic/line
and outreach)
- 3.5mm headphone socket (allowing true
monitoring of the output signal through headphones - not supplied)
- a compressor activity display.
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| Technical
Specification |
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| Mains Power |
230-240Vac |
| Inputs |
Line 6.8kohm balanced or
unbalanced
Mic 6.8kohm balanced
Outreach >10kohm balanced |
| Outreach Power |
16-21Vdc available from
amplifier Outreach Socket |
| Loop Drive Current |
6A at 1ohm balanced |
| Metal Compensation |
True 3dB/octave |
| Recommended Loop Impedance |
0.5-1.0ohm at 1KHz.
Will drive higher impedance loops with reduced area coverage |
| Coverage |
Up to 500m˛ |
| Amplifier Size |
H80 x W380 x D220 mm |
| Amplifier Weight |
3.46kg |
| Rack mount kit |
PDA RM. Also wall-mountable. |
RxTi2 - Induction Loop Reception Tester
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This receiver picks up audio
signals from the loop through walkman-type headphones (not supplied) so
that those with normal hearing can check that the induction loop
system is working correctly. Uses 2 x AAA batteries (not supplied).
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| Technical
Specification |
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| Size |
H110, W60, D25 mm |
| Weight |
90g |
| Batteries |
2 x AAA (not supplied) |
OUTREACH PLATES
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AUDIO INPUT
EXTENSION SYSTEM
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A range
of wall, ceiling and desk mountable single gang audio input plates specifically
designed to increase the audio input capability of any audio system.
A total
of six plates are available - one to suit virtually every conceivable
variant of audio input connector - and each featuring a built-in mixer,
pre-amp, input level control and balancing
output.
Up to
ten plates of any mix can be daisy-chained to one balanced line level
input with cable lengths in excess of 100m
easily achievable using standard two-pair audio
cable (i.e. Belden 8723) with no recognisable degradation of audio signal
quality.
All
plates are surface mountable on 25mm single gang back boxes and can be
installed at the most convenient point on an
installation, thus overcoming the need for
long and potentially hazardous microphone/audio leads.
The
system is ideal for conference centres, schools, leisure complexes, etc.,
where the need to have separate and spatially
distributed audio inputs is a must.
An
external d.c. power supply (part no. APV) is available for stand-alone
systems or for use with audio equipment that
does not have a 12/24V auxiliary output.
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Main features
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Can
be connected to the balanced line level
input of any audio system
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Fully
cascadable – up to ten outreach plates
can be daisy-chained to one balanced
line level input
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Plates
can be located at any convenient point on an installation
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Standard
two-pair audio cable is ideal for
most applications
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Network
lengths of 100m easily achievable
with no degradation of sound quality
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Built-in
pre-amp, mixer and level controls
included on all variants Overcomes
the need for excessivelylong microphone and audio leads
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12-32V dc
operation
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+6dB
overload capability
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Surface
mountable on 25mm UK single gang
back boxes
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Effectively
acts as a multi-point distributed
mixer with individual level controls
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Optional
wall-mounting ‘AFILS ACTIVE’
and magnetic field strength indicators available for use with
audio-frequency induction loop
systems
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OUTREACH PLATES
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AUDIO INPUT
EXTENSION SYSTEM
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APJ
3.5MM MONO JACK
PLATE |
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Accepts
balanced or unbalanced microphones with
3.5mm mono jack plugs.
Includes
an onboard mic to line level
converter, high gain pre-amplifier and
8V phantom power.
Ideal
for use with SigNET’s AML Lectern or AMT
tie/desk microphones. |
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APL
DUAL PHONO LINE
LEVEL PLATE |
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Accepts two
line-level signals (usually from a stereo
source such as a TV, CD, tape or DVD).
Includes an
on-board dual phono to mono converter.
An ALS
SCART to dual phono lead is also
available to facilitate the connection of
TVs, VCRs, etc, to the APL. |
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APQ
1/4” STEREO JACK
PLATE |
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Accepts balanced
or unbalanced microphones
with 6.35mm (1/4”) jack plugs.
Includes an
on-board mic to line level converter,
high gain pre-amplifier and 8V phantom
power.
Suitable
for use with SigNET’s
AMR radio microphone. |
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APXM
XLR MICROPHONE PLATE |
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Accepts balanced
or unbalanced microphones with
standard 3 pin XLR connectors.
Includes
an on-board mic to line level converter, high
gain pre-amplifier and 8V
phantom power.
Suitable for use
with SigNET’s AMH handheld microphone. |
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APXL
XLR LINE LEVEL PLATE |
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Accepts standard
3 pin XLR feeds from audio equipment
such as stage or church mixing desks,
etc. |
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APM
SELF-CONTAINED OMNI-DIRECTIONAL
MIC |
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A self-contained
omni-directional electret microphone
complete with on-board mic to line level
converter.
Ideal for
mounting in ceilings, walls or desks,
the unit offers excellent coverage
(typically up to 25m2 when
located at a ceiling height of 2.5-3m). |
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‘AFILS ACTIVE’ INDICATOR |
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Includes two
ultra-bright LEDs in a translucent
diffuser overprinted with the induction
loop ‘ear’ symbol.
The LEDs
illuminate when the outreach network is powered
to indicate that an AFILS system is installed.
Current consumption is 30mA max. |
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APF
MAGNETIC FIELD STRENGTH
METER |
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Indicates the
magnetic field strength generated by
an induction loop system via three LEDs, labelled
+6dB, 0dB and –6dB. The LEDs illuminate
as appropriate whenever a signal is present and can be easily set up to
indicate the magnetic field strength in the room centre. |
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| Technical
Specification |
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| Supply
volts |
12-32V |
| Supply
current |
12-15mA |
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| Common
outreach plate characteristics between balanced line in and balanced line
out |
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| Input
- balanced/unbalanced line |
1v (0dbv) |
| Output
- balanced line |
1v (0dbv) + 6db
(overload) |
| Frequency
response |
40Hz - 20kHz |
| Input
impedence |
>10KΩ |
| Output
impedence |
<100Ω |
| Insertion
loss/gain |
< ± 0.05db |
| Insertion
signal to noise ratio |
>95db |
| Insertion
THD + noise |
<0.01% |
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OPTIONAL
APV 12V 250mA PSU |
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(FOR
STAND-ALONE SYSTEMS OR FOR USE WITH
AMPLIFIERS THAT DO NOT HAVE AN
AUXILIARY 12/24V OUTPUT) |
| Individual
Outreach Specifications |
APJ PLATE |
APL PLATE |
APQ PLATE |
APXM PLATE |
APXL PLATE |
APM PLATE |
| Input signal
level |
-50dbv (5mV mic) |
-12dbv to +6dbv |
-50dbv (5mV mic) |
-50dbv (5mV mic) |
-12dbv to
+6dbv |
n/a |
| Gain |
55db |
+6db |
55db |
55db |
+6db |
55db |
| Level
control |
0dB to
-46dB |
-30dbv to +6dB |
0db to -46db |
0dB to -46dB |
-30dbv to +6dB |
0dB to -46dB |
| Input
impedance |
500Ω |
>10KΩ |
500Ω
balanced |
500Ω balanced |
>10KΩ |
n/a |
| Phantom volts |
8V/0V (link
select) |
n/a |
8V/0V (link select) |
8V/0V (link select) |
n/a |
n/a |
| Signal to
noise ratio |
>75dB |
>92dB |
>75dB |
>75dB |
>92dB |
>75dB |
| THD + noise |
<0.02% |
<0.1% |
<0.02% |
<0.02% |
<0.1% |
<0.02% |
| System
overview |
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The
system basically has two inputs per outreach plate - a balanced line level
input from the previous
outreach plate and its own adjustable input. These inputs are mixed in a
way that ensures the input from the previous
stage is virtually unaffected whilst generating a composite signal for the
output in the form of a balanced line level signal.
As very low levels of insertion loss and signal-to-noise ratios
can be guaranteed and the inherent interference advantage of having
balanced and floating line level inputs and
outputs, very long lengths of interconnecting cable may be used without
significantly degrading the signal. This, coupled with the system’s
cascadability, allows the designer to
effectively ‘tailor make’ a distributed multiple input mixer that is
compatible with virtually any
audio system.
SigNET
operates a policy of continuous improvement & reserves the right to
alter product specifications at its discretion & without prior notice.
E&OE. |
| The Disability Discrimination Act
The Disability Discrimination Act 1995 became law on
October 1st 2004. The law makes it mandatory to provide a method of
effective communication with those who are hearing impaired and use a
hearing aid. |
What systems are available to meet your legal
obligations?
- An easy and secure method is by installing an
Infra-Red Listening System.
- An economic method is by installing an Induction Loop
System.
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