Bazooka ELA1300 User manual

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Deal" customer.
Congratulations
on your purchase of a Bazooka high-performance amplifier. Rt Bazooka.
we are fanatics about accurate music reproduction. Your selection of our products for
your sound system indicates that Quality sound is also important to you too. Rt SRS. we
take grEat pride in manufacturing revolutionary audio products. and through the years of
engineering expertise. hand craftsmanship and critical testing procedures. we have
created this high-performance series of amplifiers. We hope that you will take as much
pride in owning and using one of these high-Quality audio products as we do designing and
manufacturing them.
When properly installed and operated. your Bazooka ELR amplifier will give you years of
clean uninterrupted sound reproduction. Therefore. we urge you to take afew minutes to
carefully read through this manual. It will explain all of the features of your amplifier and
help insure trouble free installation.
Sound can be deceiving. Over time your hearing comfort level adapts to higher volumes of
sound. What may have sounded normal can actually be too loud and harmful to your hearing.
Guard against this by setting your equipment at asafe level before your hearing adapts.
To establish a"safe leveP"
start with your volume control at alow setting.
Slowly increase the volume control until you can hear comfortably. clearly and
without distortion.
Once you have established acomfortable "sound level'" make anote of this
position
and do not go above this setting
Taking aminute to do this will help prevent your hearing from being damaged and allow you
to enjoy listening to music throughout your lifetime.
2ELR RMPLIFIERS

SRFETY PRECRUTIONS
Fuse amplifiers power wire at the battery.
Be sure to fuse the power wire within 12" of the carls battery. This will protect the car's
battery in case of a short circuit between the power amplifier and battery. THIS IS R MUST.
the amplifier's built-in fuse will only protect the power amplifier not the car's battery!
Usehigh grade wire connectors.
To ensure maximum power transfer and secure safe connections. it is recommended to_
use high grade barrier spades (for connection at amplifier if applicable) and terminal rings
(for connection at battery).
00 not run any wires underneath vehicle.
Exposed wires have achance of being cut 01" damaged. It is best to run all wires through
the vehicle under the
carpet and/or side panels. This lends to acleaner installation and
less
risk of damage.
Use caution whenmountingamplifier.
Remember there are many electrical wires. gas lines. vacuum lines. brake lines as well as a
gas tank in the automobile.
Make sure you know where they are when mounting the
amplifier to avoid puncturing lines, shorting wires 01" drilling holes in the gas tank.
Run signal wires away from electrical wires.
To avoid possibility of induced noise from the carls electrical system (i.e. popping noises 01"
engine noise), run wires away from the car's electrical wiring.
Make all ground wires as short as possibleand at thesame point
In order to reduce the chance of ground loops (i.e. engine noise), make the grounding wire
as short as possible to reduce the wire's resistance. Rlso, when using multiple
components, make sure all units are grounded
at the same point.
Rvoid sharp edges whenrunning the wires.
To avoid the possibility of power, signal 01" speaker shorts, be careful not to allow the
amplifiers wires to come in contact with sharp edges. Use agrommet to protect the wire
when running through the fire wall.
3

FERTURES RND BENEFITS
DC Offset Protection
This circuit protects the output of the amplifier against DC voltage. If for some r.eason DC
voltage is detected at the output stage. the amplifier will shut down protecting the
speakers from direct current.
Short Circuit Protection
The circuit protects the amplifier from damage due to ashort found in the speakers or
wiring. If
one of the speakers or its wiring comes in contact with ground, the amplifier will
shut
down. To resume normal operation, correct the problem and turn the head unit off.
then back on. The amplifier will reset and play again.
Thermal Protection
To protect the amplifier circuitry against damage caused by prolonged exposure to high
temperatures, athermal protection circuit is activated if the amplifier reaches
excessively
high operating temperature. Once the thermal circuit is activated, the
amplifier will shut down to cool off. The amplifier will automatically turn back on once it
cools down to asafe operating temperature.
Tri ModeCapable (ELR265, ELR2100, ~ ELR2150)
If so desired. the amplifier may be run in stereo and mono at the same time. For example.
this feature would allow you to run apair of mid and tweeters in stereo and asub-woofer
mono (See Page 13).
Built-in Crossover
The ~~ELR"amplifiers include abuilt-in variable **high and low pass crossovers. The
crossover features avariable frequency selection (50Hz'" 250Hz) for precise high or low
pass filtering. **Except ELR1190. 1300. 1500 & 1800 which have a 50 ,., 250Hz low pass filter.
Bass Boost
For added low frequency performance the amplifiers are equipped with switch able 6or
12dB bass boost @ 45Hz.
LineOut
One set of full range line outputs have been provided for convenient connection to
additional amplifiers
in the system. (RII models except ELR465 & ELR2150)
4ELR RMPLIFIERS

Subsonic Filter (ELRI190. ELR1300. ELR1500 Jt ELR1BOO)
Rsubsonic filter has been provided to filter out unwanted subsonic bass frequencies
below the audible range
of the subwoofer. This feature helps to improve the amplifier's
overall performance since
power is not wasted reproducing frequencies beyond the
speakers' normal operating range. This
feature works in conjunction with the Low-pass
crossover to provide band-pass filtering.
Phase Rdjustment (ELR1190. ELR1300. ELR1500 Dc ELR1BOO)
The phase switch allows for 0 or 1BO degree phase adjustment for the woofers. In most
systems, this phase adjustment should
be set at 0degrees. The lBo-degree setting is only
needed
if the subwoofers are out of phase with the satellite speakers in the vehicle.
Power Fusing
This protects the amplifier against short circuits and excessive current.
Remote Turn-on
Rutomatically turns amplifier on when connected to the head unit's remote output. The
amplifier will turn on and off with the head unit to save current consumption. This control
also operates the reset circuit for the amplifier's protection. It must be connected with
the head unit in order to reset protection circuits.
Rdjustable Input Sensitivity
Rllows you to fine-tune the level matching between your source and the power amplifier.
5

MOUNTING LOCRTION
Before you start the installation, it will be necessary to find amounting location for the
amplifier. Find alocation in which the amplifier will receive adequate ventilation in order
to dissipate the heat it develops during operation. Two popular mounting locations are in
the trunk or under the seat.
Select the location in which
you wish to mount the amplifier. Use caution when mounting
:~P~iJi~~~~~~~ ~~~~rp~a~n~Ye \~~ue~~~~ ;~~~'eV:hC~~~rl~n~~'eb:~k~eul~~fnSg at~;/:~~~~:~~;~:k~i~ I
puncturing lines, shorting wires or drilling holes in the gas tank. Once you are ready, use a
pencil to mark the mounting holes in the bottom panel.
After you have marked the locations
of the holes move amplifier out of the way and drill small starter holes to make the tapping
screws easier to install. Use provided screws to tighten down the amplifier.
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ELR RMPLIFIERS

POWER CONNECTIONS
IN-LINE POWER FUSE
MOUNTED WITHIN 12"
FROM BATTERY RECOMMENDED
(NOT PROVIDED)
IMPORTRNTI Before making any connections. disconnect the car's battery until the
installation is completed to avoid possible
damage to the electrical system.
Connect the amplifier to the car's battery.
At times, the amplifier will need to draw large levels of current that cannot be provided by
any circuit in the car's fuse box. We recommended using an 4to 8 gauge power wire for
your connections depending on the amplifier and length of the wire. strip one end of the
wire to crimp on a barrier spade. Loosen the +12V screw terminal and insert the power
wire with the barrier spade and tighten. Use caution to make sure no stray wire stands
come in
contact with surrounding terminals causing short circuits. Run the wire directly
to the positive terminal of the carls battery. Make sur.e to use an in-line fuse within 12" of
the car's battery to protect the electrical system and amplifier against short circuits
and/or power surges.
Connect the ground terminal of the amplifier to the car's chassis.
For the ground connection. use an 4to 8 gauge wire (black) to connect to the terminal
marked GNO and then connect it to the car's chassis. Try to keep the length of the cable as
short as possible. preferably less than 6". Also make sure that the point on thE! car where
the connection is to bE! made is free of paint and dirt.
Connect the remote terminal of the amplifier to aswitchable +12V source.
This connection allows the amplifier to be turned on and off with the power control of the
radio.
If the radio has a REMOTE output terminal. connect it to the amplifier's terminal
marked REMOTE (using a 16 gauge wire or heavier). Now when the radio is turned on, the
amplifier will automatically turn on. This connection can also be made to the radio's Power
Antenna
wire.
7

SI6NRL CONNECTIONS
Connect the HCH output of thehead unit (RM/FM cassette plaljer, CO, or ORT) to the HCR
input terminals of the amplifier.
To make these connections, we recommend high Quality RCA cables. which all:! available at
your local car
audio retailer. Run signal wires away from electrical wires to avoid
possibility of
induced noise from the car's electrical system (i.e. popping noises or engine
noise).
Please note that when making these connections the signal inputs correspond with
the speaker outputs.
[,-~.:-94=.7-,1 ~ c==::J
0- II1III111
ELR1300. ELR150D, & ELR1800
SIGNRL CONNECTIONS
SUBSONIC
olDoN
o
MIN MAX
GAIN
Optional full range line out
connection to additional amplifiers
in the system.
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o 111III111
ELR265, ELR119D. ELR2100 & ELR2150
SIGNRL CONNECTIONS
ELR465 SIGNRL CONNECTIONS
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FRONT
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8
REAR
ELR RMPLIFIERS

HIGH LEVEL CONNECTIONS (OPTIONRL)
(NOT USED)
I I I I I I ,.-. I .,
GREEN LEFT +
GREENIBLACK LEFT-
GRAY RIGHT +
GRAYJBLACK RIGHT-
BLACK
LINE IN LINE OUT
e GAIN
HOGHINPUT ~@~ 0'
7_R._L~ @@ ):t
~ SUBSONIC
..... ' _..:...94=.7...,JII;-,·""F.1 ~
()
~"
.!2L
GAOl
LEFT +
GREEN
BLACK (NOT USED)
GRAYJBLACK RIGHT -
GRAY RIGHT +
GREENIBLACK LEFT -
CRUTIONf Before making any connections determine the type of radio to avoid possible
damage to amplifier and/or radio.
High Level inputs have bee-n included to connect the amplifier to aradio without low-level
outputs (i.e.
factory radio). This connection will allow you to connect directly to the
speaker output
of the radio with out the need of an external adapter.
Determine the type
of radio you have and make one of the following connections.
ELR1190. ELR1500 & ELR1800 ELR265. ELR2100. ELR1190 & ELR2150
TWO CHRNNEL CONNECTIONS: FLORTING GROUNO RRDlO (MOST COMMON TYPE)
I , I I I I I.
94.71~~
LINE IN UHf OUT
~ GAIN
HOGHI .... UT ~@~ 0
7-
R
.-'; @@ .. w
'-ilmllIi-' "'~
SUBSONIC
GREEN LEFT +
..... _- ... GREENIBLACK NOT USED
GRAY RIGHT+
..... _-- ... GRAYJBLACK NOT USED
BLACK GROUND
SUBSONIC
~,.~ .. , ..... 1_..:...94=.7...,J1~~
~ 11111,.
BLACK GROUND
..... _- ... GRAYJBLACK NOT USED
GRAY RIGHT+
..... --- ... GREENIBLACK NOT USED
GREEN LEFT+
ELR1190. ELR1500 & ELR1800
ELR265. ELR2100. ELR1190 & ELR2150
TWO CHRNNEL CONNECTIONS: COMMON GROUND RRDIO
9