Audison srx 1 Manual
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PRINTED IN ITALY - Code 10125860
62018 Potenza Picena (MC) Italy • Tel. 0733.870870 • Fax 0733.870880 • http://www.audison.com
POWER SUPPLY
Power supply voltage: . . . . . . .
11 ÷ 15 VDC
Idling current: . . . . . . . . . . . . . . . .
0.6 A
Idling current when off: . . . . . . . .
< 0.04 mA
Musical max consumption: . . . . . . . . .
20 A
AMPLIFIER STAGE
Distortion - THD (1kHz; 4 Ohms): . . . . .
0.02%
Electric Bass bandwidth (-3 dB): .
4Hz ÷ 50 kHz
Acoustic Bass bandwidth (-3 dB): .
4Hz ÷ 25 kHz
S/N Ratio (A weighed @1 V): . . . . . . . .
95dB
Electric Bass damping factor (1kHz, 4 Ohms):
300
Acoustic Bass damping factor (1kHz, 4 Ohms):
70
Pre In input sensitivity: . . . . . . . . . .
0.2 ÷ 5V
Speakers In input sensitivity: . . . . .
0.4 ÷ 10V
Pre In input impedance: . . . . . . . .
15 kOhms
Speakers In input impedance: . . . . .
100 Ohms
LOAD IMPEDANCE: . . . . . . . .
4 - 2 Ohms
NOMINAL OUTPUT POWER (RMS)
NP
@ 12VDC, THD 0.3%, 4 Ohms:
. 150 W x 1
OUTPUT POWER (RMS) @13.8 VDC; THD 1%:
• 1ch (4 Ohms): . . . . . . . . . . . .
210 W x 1
• 1ch (2 Ohms): . . . . . . . . . . . .
350 W x 1
FILTERS/INPUTS
Inputs: . . . . . . . . .
Pre In / Speakers In - IN
Outputs: . . . . . . . . . . . . . Pre Out (bypass)
. . . . . . . . . . . . Speakers In - OUT (bypass)
Subwoofer fi lter:: . . . . .
Full/ lo-pass 24dB/Oct.
. . . . . . . . . . . . . . . . . . .
(40 ÷ 120 Hz)
Sub equalizer fi lter: . . . . . . . . . .
40 ÷ 72 Hz
Sub equalizer level: . . . . . . . . . .
0 ÷ (+4dB)
Subsonic fi lter: . . . . . . . . .
OFF / 24dB/Oct.
Subsonic set: . . . . . . . . .
(18 / 26 / 34 Hz)
Phase switch: . . . . . . . . . . . . . .
0 / 180°
OTHER FUNCTIONS
Signal sense turn on (from BTL amp):
Speakers In
Remote In: . . . . . . . . .
7 ÷ 15 VDC - 1 mA
Remote Out (by signal sense turn on):
. . . . . . .
. . . . . . . . . . . . . . . . . . . 12 VDC - 10 mA
SUB volume remote control (optional): . . .
VSR
Fuse (strip): . . . . . . . . . . . . . . . . .
20 A
Protection: . . . .
temperature > 85°C (185°F),
. . . . . . . . . . .
output DC voltage, overload
Green / red led indicators: . . . . .
ON / SAFETY
Cooler fan turn on: . . . . . . . . .
55°C (131°F)
MAX SIZE
(D x H x L): . .
178 x 49.5 x 320 mm
WEIGHT:
. . . . . . . . . . . . . . . . .
2.4 Kg
TECHNICAL FEATURES
Owner’s Manual CAR OWER P AMPLIFIER
INTRODUCTION
Thanks for preferring this product. Its very good performances will
insure you utmost satisfaction.
Please read this owner’s manual paying special attention to our
recommendations in order to get the best performances without
problems.
Safety precautions
•
The vehicle electric system
must have 12VDC voltage with
negative to ground. Make sure your car has it in order to avoid
any damages to your amplifier and to the car itself.
•
Suitably fix the amplifier
with the screws given with it; pay utmost
attention if you install it into the driver’s compartment.
Use extra fixing systems if you install it inside the bonnet. If
the amplifier detaches itself while you are driving, it can severely
damage people and other vehicles.
•
Power supply cable
must have mechanically resistant and
self-extinguishing insulation. Its section has to comply with
what is indicated in this manual. When placing it, avoid to
press it against cutting parts or close to mechanical moving
objects. Make sure it is suitably fixed all along its length. Put a
clamping screw between positive and negative cable just
close to the amplifier power supply terminal block.
•
Put a fuse holder
close to the battery positive terminal;
connect one end of the power supply cable to it after
connecting its other end to the amplifier. The fuse value must
be 50% higher than the amplifier built-in one. In case the cable
supplies several amplifiers, the fuse value will have to be 50%
higher to the sum of the values of all other fuses in the system.
•
For safer driving,
we recommend to adjust volume not to
drown external traffic sounds.
•
WARNING.
When the amplifier works in particularly hard
conditions, it can reach 90°C (194°F). Make sure its
temperature is safe before touching it.
Functioning precautions
• I
nstall the amplifier
in locations where temperature is
between 0°C (32°F) and 55°C (131°F).
•
There must be suitable
air circulation where you install
the amplifier; this area must not be affected by humidity,
rain, external deposits or parts coming from the vehicle
mechanical devices.Letthe amplifier ends (i.e. the parts where
air goes in and out) be at least 5 cm (2”) far from possible
walls.
•
When installing speakers
and the cables that connect them,
make sure that non-insulated parts don’t touch the car chassis.
If they do, the amplifier protection intervenes.
•
Listening level calibration
is made by adjusting the source volume
up to 3/4 of its maximum level; then, adjust the amplifier levels
until you can hear distortions.
Maintenance and reliability precautions
•
Periodically clean the amplifier
avoiding to use aggressive
solvents that might damage plastic or painted parts. Dampen
a piece of cloth with water and soap, wring it and clean the
amplifier with it. Then, clean the amplifier by using a piece of
cloth dampened with water only; eventually clean it with a dry
piece of cloth.
•
Remove dust and solid deposits
from the open areas where
you can find front controls and from side areas at the amplifier
ends, where air should go in and out. This must be periodically
done by using a screw driver or a small brush.
Avoid to use compressed air since it would push the solid parts
into the amplifier. If necessary, please contact a specialised
after sale service centre for internal cleaning. Possible deposits
might obstruct or stop the cooling fan; the amplifier would then
go in safety.
SRx project is the best compromise between compactedness,
versatility, power performances, sound quality and reliability you
can nowadays find in the marketplace.
All its parts, like electronics, connections, mechanical componen-
ts, were realised by re-examining several aspects of automotive
amplifiers, looking for innovative solutions aiming at production
improvement and eliminating complex elements that, anyway,
wouldn’t have enhanced performances.
Final stage electronic circuitry proves it. Such amplifiers normally
use the simple and cheap B circuitry; SRx’s, on the contrary, don’t
give up AB class higher quality. In order to get it, we designed a
very innovative circuitry called DYNAB (Dynamic AB) Class. It is
a circuitry for automatic bias current adjustment; it is simple to
calibrate and it has constant temperature, typical of traditional AB
class. DYNAB combines B class easiness with AB class quality.
SRx connections are special, too. We chose terminal blocks
that are not normally employed in car stereo, rather commonly
used in professional electro-technical field. Approved by the
most important international safety norms institutions, they
have screw clamp connections (that don’t damage cable) and
self-extinguishing body.
External plastic parts are special, too. Although they touch
aluminium parts that can reach 90°C (194°F), they don’t have any
problems since they are made of a special polymer that resists to
150°C (302°F) and to crashes (similar to the material modern cars
bumpers are made of).
Our main goal when designing SRx was they had to have the
same technical features as so-deemed higher level amplifiers.
We employed the latest TO247 linear transistors for final stage.
We paid utmost attention to input stages, both Pre and Hi Level,
using LNS circuit for noise rejection. Built-in crossover is
extremely versatile and allows lots of configurations.
Power supply is not stabilised, in order to insure maximum efficien-
cy; it ing toroidal coil to increase efficiency as well has secondary filter
as reliability. Input battery voltage was filtered through a common-
mode inductor, in order to decrease radio-disturbances and to
comply with the latest car norms (95/54/EC European Norms and
ECE10 International Norms).
Protection circuits include: maximum temperature, output overload,
output DC, RGP (Resettable Ground Protection) to detect short
circuit between the output and the chassis, general protection
fuse inside the amplifier. When protection intervenes, Safety
red indicator is on. When the problem that made the amplifier go
in Safety is solved, the amplifier starts working again.
You can connect VSR, subwoofer volume remote control, to all
SRx amplifiers; it is optional.
The SRx 1 is a mono amplifi er equipped with many unique
features. A is featured which is fully 24 dB LO PASS FILTER
adjustable between 40 and 120 Hz which can also be defeated
for full range operation.
Complementing the low frequency range is a 24 dB SUBSONIC
FILTER as well as a SUB EQ parametric equalizer (bass boost)
adjustable in both amplitude and frequency. It is further enhanced
with the truly innovative feature of ELECTRIC BASS and
ACOUSTIC BASS selectable speaker outputs. You may choose
between these two outputs to obtain the best match between this
amplifi er and the loudspeaker system used.
These features allow this unit to be used as a full range amplifi er
in a Dual Mono confi guration or as a specialized low frequency
subwoofer amplifi er. The turn on and SIGNAL SENSE HI LEVEL
INPUT functions allow this amplifi er to be easily connected to
OEM factory audio systems. Usually these factory systems are
not equipped with low-level pre-amp outputs or a remote turn on
output. The solves this problem, as it is equipped with SRx 1 HI
LEVEL INPUT to connect to the loudspeaker outputs of a factory
system. When this amplifi er is connected through these inputs,
the amplifi er . It can also supply other turns on automatically
amplifi ers in the system with turn on control. REMOTE OUT
Furthermore, since this section is equipped not only with a hi level
speaker IN input, but also with hi level speaker OUT BYPASS
output, the can give the previously mentioned amplifi ers SRx 1
a signal to be amplifi ed. You can also use the OUT BYPASS to
connect back to the factory speaker system.
SRx 1
GB
A. On / Safety (switching on / protection)
1 • Green led indicator (ON).
It indicates the amplifier is on.
2 • Red led indicator (SAFETY).
It indicates protection intervention.
B. Level (0.2 ÷ 5 VRMS)
• It adjust amplifier sensitivity.
C. Sub Equalizer level
• Adjust the equalization level of the Sub between 0 and
+4 dB.
The frequencies are selectable from 40 to 72 Hz by means
of Sub EQ controller - FILTERS section.
D. Subwoofer Mode
• It activates the Subwoofer LO-PASS (LO) filter or it
excludes it (FULL).
E. Phase
•
It inverts the signal phase present on the output terminals.
It can be usefull to alligne the Subwoofer to the acoustic
level with the front system.
F. Subsonic Mode
• It activates (ON) the Subsonic filter or it excludes it
(OFF).
G. Filters adjusting
1 • It adjusts 24dB/Oct. LO-PASS Subwoofer filter cut-off
frequency between 40 Hz and 120 Hz.
2 • It adjusts the enphasis central band frequency of the
SUB EQ. between 40 Hz and 72 Hz.
3 • It permits to select the 24 dB/Oct. LO-PASS frequency
of the Subsonic filter at 18 Hz, 26 Hz or 34 Hz.
A. Plates opening and fixing
1 • Plates removing - Remove left and right plates by pressing
where indicated.
2 • Fixing - Fix the device through the 4 screws given with it.
3 • Plates mounting - Mount left and right plates again minding to
insert their tongues into fixing screws housing. Strongly press
where indicated.
B. Fuse replacement
• Open the right plate and replace fuse with the spare one
given with the amplifier.
C. VSR Installation (optional)
• Open the left plate and put VCA switch on ON. Insert VCA.S
module into the proper slides on the plate and, then, into the
connector.
D. Connection cables
1 • Power supply cables (4/5m long): with 4 Ohm loads, use
audison cable POWERFLOW 9; with 2 Ohm loads, use
audison cable POWERFLOW 7.
2 • Speakers output cables.
3 • Cables for speaker level signal inputs, for remote and
VSR.
A. Pre In (preamplified inputs)
Applied signal must be between 0.2 VRMS and 5 VRMS.
•Left and right channels input.
For the ampified output it has the mix L + R function.
B. Out bypass (preamplified inputs)
• Left and right channels output.
The type of signal available on this output is stereo and it
comes from the Pre In input.
C. VSR (Sub volume)
•
Inputs for VSR (optional kit for sub volume remote control).
Connect them to VSR, optional kit for subwoofer level remote
control. This kit consist of VSR control and VCA.S module,
to install into the proper housing.
D. Remote In / Out
• Remote In: input for the amplifier remote switching on.
Connect it to the source proper output.
• Remote Out: turn on output of other amplifiers.
Using the speakers In - IN input, in the case of head unit with
internal amplifier BTL type (bridge), it isn’t necessary the
remote control for turning on the amplifier. In this case on
the Remote In terminal, the remote control for turning on
other amplifiers is available.
E. Speakers In: IN (amplified input signals)
Red connections
• Left and right channels speaker level input.
Not to be used if you employ Pre In preamplified signal
connection.
• Automatic signal sense turn on:
If the head unit has a driven amplified output from an internal
amplifier BTL type (bridge), you will not need the Remote In
to turn on, connecting this input in parallel to the existing
speakers or to the head unit speaker output.
F. Speakers In: OUT Bypass
Red connections
•
Speakers outputs connected in parallel to Speakers In - IN.
This output can be used to connect speakers that will be
driven by the amplified signal present on the Speakers
In - IN.
G. Speakers Out
Speaker connection outputs. There are two groups of output:
ACOUSTIC BASS and ELECTRIC BASS. Each group has
two terminals for connectiong two speakers of 4 Ohms. The
two groups of outputs permitt the best acoustic matching with
the speaker system used. To select which group to use you
need to experiment which one is more suitable to the specific
case. Refer to the attached page of this owner’s manual:
“Acoustic Bass and Electric Bass explained”.
Warning:
• Do not use both Electric Bass and Acoustic Bass outputs at the
same time in the case you connect more than one speaker.
• On each terminal you can connect only one 4 Ohms
speaker.
• For a 2 Ohms connections of the amplifier you must connect
the second speaker on the terminal near the same group
respecting the polarities.
• In the case of double voice coil speakers, each voice coil
must be connected on the single terminal of the same group
respecting the polarities.
H. Power
• Terminals for power supply cables connection
(battery: 12V).
Connect + terminal to the battery positive and - to the car
chassis. Voltage is 12 VDC with negative to ground.
It indicates how to position the different selectors for the control configurations of the Subsonic filter, Sub Equalizer and Subwoofer filter.
WARNING! For extra protection, we recommend to put a strip
fuse along the cable that connects the battery positive pole to
the amplifier +BATT terminal. This fuse must be installed approx.
25 cm far from the battery. Its value will have to be 50% higher
than the amplifier built-in one. When systems consist of several
amplifiers or of amplifiers with several built-in fuses, the value of
this fuse will have to be 50% higher to the sum of the values of all
other fuses in the system.
5. CONNECTIONS AND CONFIGURATIONS EXAMPLES
1. INSTALLATION
2. CONNECTIONS
3. FUNCTIONS AND CONTROLS
4. CONFIGURATION TABLE
SRx project
Produkt Specifikationer
| Mærke: | Audison |
| Kategori: | Bilradio |
| Model: | srx 1 |
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