Banda Audioparts VOXER 4.8 User manual

• Output:
4 channels (4x 120Wrms 2ohms),
3 channels (2x 120Wrms 2ohms + 1 240Wrms 4 ohms) or
2 channels (2 x 240Wrms 4ohms).
12.6Vdc
Current draw at full power (average music program): 47A*
*Equivalent to current draw with resistive load and sinusoidal signal at half power.
TECHNICAL SPECIFICATION
TECHNICAL SPECIFICATION
• Operation topology: Class AB
• Selectable active crossover:
• Linkwitz-Riley 12dB/octave:
Low Pass: 16Hz a 80Hz
High Pass: 80Hz a 45kHz
Band Pass (flat)
• Frequency response: 16Hz a 45kHz - 3dB
• THD < 0.08%
• SNR > 90dB
• Damping Factor > 290
• Input sensitivity: 0.1 a 1Volt
• Input impedance 22kohms
• Clip indicator
• MONO/STEREO switch
• Individual gain control
• Differential input circuit
• Dimensions: 12.1" L x 2.5" H x 10.1" W
• Weight: 9.9lb
V O X E R - 4 . 8
02 .......... Technical specification
03 .......... Front panel
Power supply section, signal input and power output section and clip indicator 04 ..........
05 .......... Active crossover and connection example
06 .......... Connection example
07 .......... Protection system and troubleshooting
08 .......... Warranty
Front panel
2
345678 9
1
on mono
mono
1. Blue LED : • On
2. Red LED : • Output clipping (distortion)
3. Red LED: • Protection -short circuit / fuse blown or missing / high temperature
4. MONO/STEREO switch (channels 3 / 4)
5. MONO/STEREO switch (channels 1 / 2)
6. Gain control - left (Canal 4)
6. Gain control -MONO (Bridged 2)
short
CLIP
fuse
U S E R M A N U A L
w w w . b a n d a a u d i o p a r t s . c o m
Made in Brazil
C O S T U M E R S E R V I C E :
5 5 ( 1 9 ) 3 8 4 4 - 7 1 7 3 - ( 1 9 ) 3 8 4 4 - 7 4 6 5 - ( 1 9 ) 3 8 4 4 - 4 9 2 3 •
B A N D A @ B A N D A A U D I O PA R T S . C O M
WARRANTY
Banda Audioparts warrants this equipment to be free of all defects in material and workmanship for
a period of 12 months from the date of purchase
Within the period of this warranty, Banda Audioparts will repair or replace, free of charge, any part
proving defective in material or workmanship.
Warranty Exclusions:
1. Damage resulting from misuse, abuse, accident, alterations or improper installation;
2. Damage resulting from installation in surfaces subjected to high levels of vibration;
3. Corrective work necessitated by repairs made by anyone other than a Banda Audioparts
authorized service technician;
This warranty does not cover shipping costs.
The defective equipment must be shipped to the factory or to an authorized service center
Rua Hum, 188 - Jardim Santa Terezinha II - Paulínia - SP - Brazil - CEP: 13148-133
Banda Audioparts reserves the right to change the product and its specifications at any time
without prior notice.
Note:Permanent Technical Support
After the warranty expires, Banda Audioparts will continue to provide extensive technical
assistance directly or through its network of authorized service, charging, however, the repair
services and replacement of components
Warning: Continuous expose to sound pressure levels over 85dB may cause permenent hearing loss.
REGISTRATION DATA
Name:
Invoice: Date: Phone:
Address:
Shop: Phone:
08
temp
7. Gain control right (channel 3)
Gain control right (channel 1)8.
Gain control left (channel 2)9.
Gain control - MONO (Bridged 1)9.
INDEX

Power output section and signal input section
21
Power supply section
34
CROSSOVER / CONNECTION EXAMPLE
CONNECTION EXAMPLE
• Selectable Active Crossover 12dB/octave
Low Pass: 16Hz - 80Hz
High Pass: 80Hz - 45kHz
Band Pass - (Flat)
Note: To access the crossover switch, remove the plastic
cover under the amplifier.
1 2 3 RCA 1 RCA 2 RCA 3 RCA 4 4 5 6
Note: For bridge connection, select MONO in MONO/STEREO switch.
Channel 1
1. Positive speaker output
2. Negative speaker ouput
RCA 1. Signal input
Channel 2
1. Negative speaker output
3. Positive speaker output
RCA 2. Signal input
Channel 3
4. Negative speaker output
6. Positive speaker output
RCA 3. Signal input
Channel 4
5. Positive speaker output
6. Negative speaker output
RCA 4. Signal input
Bridged 1
2. Negative speaker output
3. Positive speaker output
RCA 2. Signal input
Bridged 2
4. Negative speaker output
5. Positive speaker output
RCA 3. Entrada de sinal Bridged 2
++
gnd gnd
RCA INPUT
++
++
gnd gnd
RCA INPUT
++
++
gnd gnd
RCA INPUT
++
Channels 1/2
4 ohms 60Wrms x 4
wired in parallel
Bridge 1 / 2
4 ohms 240Wrms woofer
per bridge.
Bridge 2
2+2 ohms 240Wrms
coils wired in series.
++
gnd gnd
RCA INPUT
++
Bridge 1
8 ohms 120W woofer x 2
wired in parallel.
Bridge 1
8 ohms 120W woofer x 2
wired in parallel.
Note: these are basic projects, just given as examples.
TECHNICAL SPECIFICATION
PROTECTION SYSTEM AND
TROUBLESHOOTING
Short Circuit protection:
If short circuit is detected in output terminals, the output is disabled and the red LED lights up until the short circuit is
removed. If the load impedance is lower than the amplifier specification, the equipment may trigger the short circuit
protection.
High Temperature Protection:
When the amplifier is too hot the protection temperature will disable the output until the temperature drops.
Power Supply Inverted Cable Protection:
If the power supply cables are connected inverted, the internal fuse will blow.
Troubleshooting:
Protection triggered
1. Check if the internal fuse is blown. If so, replace it with a same current rate fuse (50A).
2. Check if there is short circuit in the output terminals. To do it, turn off the amplifier, disconnect all speakers and the
input RCA cable and wait about 20 seconds. Turn the amplifier again and if the blue LED lights up, the amplifier is
operating normally.
3. Check if any speaker is presenting short circuit or the total impedance load is lower than the amplifier specification.
4. Check if there is enough current in battery to supply the amplifier and if the cables are capable of conduct that
current.
Output Noise
1. Check if there is loose connection in signal input or in the RCA cable.
2. Check if there is ground connection in the radio/cd RCA output.
3. Check if RCA cables are wired separated from the power cables.
4. Check if the +12Vdc that powers the amplifier is coming directly from the battery.
5. Check if ground cable is connected in car chassis as near as possible of the amplifier.
6. Both radio/cd and amplifier must be firmly connected to car chassis ground to avoid noises and voltage fluctuations
at amplifier output.
Important Notes:
• Use 5 AWG power cables for both GND and +12Vdc.
• Do not use impedance load lower than the amplifier specification. This can damage the equipment.
• Use wire solder for tinning the cable end for better electrical contact. Loose electrical connection can cause malfunction,
heating and even fire
• The GND connection must be as short as possible, using adequate wire terminal firmly connected to a clean, paint free
spot at the car chassis.
• If more than one amplifier is used, provide adequate individual wiring for each one.
• If using power supply to power the amplifier, it must be capable of supply between 12.6 – 14.4Vdc with at
least the amplifier maximum current value and maximum output variation (Vripple) of 10%.
CLIP INDICATOR
The red LED lights up when the amplifier output is distorting. As long as the speakers used are capable of
handle the total output power this LED can eventually blink but if it holds still it means too much
distortion in the output and this can damage the speakers and the amplifier. In this case, turn down the
head unit volume.
1. Negative power input (ground): connect to car chassis.
2. Protection fuse: • 50A
3. Remote input: connect to radio/cd remote output.
4. Positive power input (+12Vdc): connect to baterry positive
terminal.
Use 5awg power cables for both GND and +12Vdc