congratulations...
on your purchase of a Pyramid Royal Red Series
amplifier. This amplifier extends the Pyramid
tradition into a totally new series of amps, designed
from the ground up to deliver the power,
performance and flexibility the modern car audio
enthusiast demands.
When you check the list of features offered by the
PB445X, PB545X, PB645X, PB845X, PB945X, PB1045X
and PB1845X, you’ll know you made the right
choice with a Pyramid Power amplifier.
table of contents
general features
features and specifications
PB445X
PB545X
PB945X
PB645X/PB845X
PB1045X/PB1845X
electrical connections
PB445X/545X/945X
PB645X/PB845X/1045X/1845X
stereo input connections
PB445X/545X/945X
mono input connections
PB445X/545X/945X
2/4 channel input connections
PB645X/PB845X/1045X/1845X
2-3
4-5
6-7
8-9
10-11
12-13
14
15
16
17
18
high level input connections
PB645X/PB845X/1045X/1845X
mono input connections
PB645X/PB845X/1045X/1845X
high level mono input connections
PB645X/PB845X/1045X/1845X
speaker connections
PB445X/545X/945X
speaker connections
PB645X/PB845X/1045X/1845X
mounting and installation
protection circuitry and troubleshooting
precautions
19
20
21
22
1
23-24
25
26
27
general features
PB445X
High Performance 600 Watt 2 Channel
Bridgeable MOSFET Amplifier
· 300 Watts x 2 Output
· 600 Watts x 1 Bridged Output
· Variable Hi/Lo Electronic Crossover
Network
· Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Input
· Power ON LED Indicator
· LED Protection Indicator
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
PB545X
High Performance 800 Watt 2 Channel
Bridgeable MOSFET Amplifier
· 400 Watts x 2 Output
· 800 Watts x 1 Bridged Output
· Variable Hi/Lo Electronic Crossover
Network
· Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Input
· Power ON LED Indicator
· LED Protection Indicator
· Remote Bass Boost
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
PB945X
High Performance 1000 Watt 2 Channel
Bridgeable MOSFET Amplifier
· 500 Watts x 2 Output
· 1000 Watts x 1 Bridged Output
· Variable Hi/Lo Electronic Crossover
Network
· Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Input
· Power ON LED Indicator
· LED Protection Indicator
· Remote Bass Boost
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
PB645X
High Performance 1000 Watt 4 Channel
Bridgeable MOSFET Amplifier
· 250 Watts x 4 Output
· 500W x 2 Bridged Output (250Wx2+
500W x 1)
· Dual Variable Hi/Lo Electronic Crossover
Network
· Dual Variable Bass Boost (0 - +18 dB @
60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Inputs
· Power ON LED Indicator
· LED Protection Indicator
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
· Tri-Mode Configurable
2
general features
PB845X
High Performance 1200 Watt 4 Channel
Bridgeable MOSFET Amplifier
· 300 Watts x 4 Output
· 600W x 2 Bridged Output (300Wx2+600W x 1)
· Dual Variable Hi/Lo Electronic Crossover Network
· Dual Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Inputs
· Power ON LED Indicator
· LED Protection Indicator
· Remote Bass Boost
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
· Tri-Mode Configurable
PB1045X
High Performance 1600 Watt 4 Channel
Bridgeable MOSFET Amplifier
· 400 Watts x 4 Output
· 800W x 2 Bridged Output (400Wx2+800W x 1)
· Dual Variable Hi/Lo Electronic Crossover Network
· Dual Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Inputs
· Power ON LED Indicator
· LED Protection Indicator
· Remote Bass Boost
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
· Tri-Mode Configurable
PB1845X
High Performance 2000 Watt 4 Channel
Bridgeable MOSFET Amplifier
· 500 Watts x 4 Output.
· 1000Wx2Bridged Output ( 500Wx2+1000Wx1)
· Dual Variable Hi/Lo Electronic Crossover Network
· Dual Variable Bass Boost (0 - +18 dB @ 60Hz)
· Variable Input Level (Gain) Control
· Remote Turn On/Off
· Gold Plated RCA Inputs
· High Level MOLEX Inputs
· Power ON LED Indicator
· LED Protection Indicator
· Remote Bass Boost
· S/N Ratio: > 95 dB
· THD: <0.04%
· Thermal Protection
· Overload Protection
· Short Circuit Protection
· Anti-Thump Turn-On
· Tri-Mode Configurable
3
pb445X
features and controls
2 ch amp PB445X
input level control
crossover mode selector
bass boost level
high level inputs
low level inputs
speaker connections
high pass frequency control
low pass frequency control
4
protection LED
power LED
power terminals
power fuse
features and specifications
2 ch amp PB
44
5X
crossover mode selector
input level control
low pass frequency control
high pass frequency control
bass boost level control
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
when used with normal, full range systems, set this switch to “FULL.” If
you wish to use the internalcrossover topower adriver ofspecific frequency
range, use the “LOWPASS” or “HIGHPASS” settings.
use this control to match the outputs of your head unit to the amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level control until distortion begins to occur, and reduce slightly
from this point.
when the crossover selector switch is in “low pass” mode, this control
sets the upper frequency limit for audio program sent to the speakers.
when the crossover selector switch is in “high pass” mode, this control
sets the lower frequency limit for audio program sent to the speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
frequency response
input impedance
low level inputs
high level inputs
input sensitivity
low level inputs
high level inputs
power supply voltage
matching speaker impedance
stereo mode
bridged mode
maximum current draw
dimensions (WxHxL)
mm
inches
40 Watts x 2
60 Watts x 2
300 Watts x 2
15 Hz-30 KHz
10K Ohms
100 Ohms
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
2-4 Ohms
4-8 Ohms
15A
300x62x259
11.8 x 2.5 x 10.2
5
pb545X
features and controls
2 ch amp PB545X
input level control
crossover mode selector
bass boost level
high level inputs
low level inputs
speaker connections
high pass frequency control
low pass frequency control
6
Remote Bass Boost
protection LED
power LED
power terminals
power fuse
features and specifications
2 ch amp PB
54
5X
crossover mode selector
input level control
low pass frequency control
high pass frequency control
bass boost level control
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
when used with normal, full range systems, set this switch to “FULL.” If
you wish to use the internalcrossover topower adriver ofspecific frequency
range, use the “LOWPASS” or “HIGHPASS” settings.
use this control to match the outputs of your head unit to the amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level control until distortion begins to occur, and reduce slightly
from this point.
when the crossover selector switch is in “low pass” mode, this control
sets the upper frequency limit for audio program sent to the speakers.
when the crossover selector switch is in “high pass” mode, this control
sets the lower frequency limit for audio program sent to the speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
frequency response
input impedance
low level inputs
high level inputs
input sensitivity
low level inputs
high level inputs
power supply voltage
matching speaker impedance
stereo mode
bridged mode
maximum current draw
dimensions (WxHxL)
mm
inches
50 Watts x 2
80 Watts x 2
400 Watts x 2
15 Hz-30 KHz
10K Ohms
100 Ohms
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
2-4 Ohms
4-8 Ohms
20A
300x62x285
11.8 x 2.5 x 11.6
7
pb945X
features and controls
2 ch amp PB945X
input level control
crossover mode selector
bass boost level
high level inputs
low level inputs
speaker connections
high pass frequency control
low pass frequency control
8
Remote Bass Boost
protection LED
power LED
power terminals
power fuse
features and specifications
2 ch amp PB
94
5X
crossover mode selector
input level control
low pass frequency control
high pass frequency control
bass boost level control
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
when used with normal, full range systems, set this switch to “FULL.” If
you wish to use the internalcrossover topower adriver ofspecific frequency
range, use the “LOWPASS” or “HIGHPASS” settings.
use this control to match the outputs of your head unit to the amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level control until distortion begins to occur, and reduce slightly
from this point.
when the crossover selector switch is in “low pass” mode, this control
sets the upper frequency limit for audio program sent to the speakers.
when the crossover selector switch is in “high pass” mode, this control
sets the lower frequency limit for audio program sent to the speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
frequency response
input impedance
low level inputs
high level inputs
input sensitivity
low level inputs
high level inputs
power supply voltage
matching speaker impedance
stereo mode
bridged mode
maximum current draw
dimensions (WxHxL)
mm
inches
80 Watts x 2
120 Watts x 2
500 Watts x 2
15 Hz-30 KHz
10K Ohms
100 Ohms
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
2-4 Ohms
4-8 Ohms
20A
300x62x355
11.8 x 2.5x 13.9
9
features and controls
4 ch amp PB645X • PB845X
pb645X
pb845X
ch 3/4 high pass frequency control
ch 3/4 crossover mode selector switch
ch 3/4 input level control
ch 3/4 bass boost level control
ch 3/4 low pass frequency control
ch 3/4 low level inputs
ch 3/4 high level inputs
power LED
protection LED
speaker connections
ch 1/2 high pass frequency control
ch 1/2 crossover mode selector switch
ch 1/2 input level control
ch 1/2 bass boost level control
ch 1/2 low pass frequency control
Remote Bass Boost(PB645X without)
ch 1/2 high level inputs
ch 1/2 low level inputs
power terminals
10
power fuse
dual crossover mode selectors
dual input level controls
dual low pass frequency controls
dual high pass frequency controls
dual bass boost level controls
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
features and specifications
when used with normal, full range systems, set these switches to“FULL.”
If you wish to use the internal crossovers to power a driver of specific
frequency range, use the “LOWPASS” or “HIGHPASS” settings.
use these controls to match the outputs of your head unit tothe amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level controls until distortion begins to occur, and reduce slightly
from this point.
when one or both of the crossover selector switches is in “low pass”
mode, one can set the upper frequency limit for audio program sent to
the speakers.
when the one or both of crossover selector switchis in “highpass” mode,
one can set the lower frequency limit for audio program sent to the
speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB in either or both pairs of channels.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
4 ch amp PB645X • PB845X
PB
845X
4 channel amplifier
50 Watts x 4
60 Watts x 4
300 Watts x 4
15 Hz-30 KHz
10K Ohms
100 Ohms
250mV
2.5V
2-4 Ohms
4-8 Ohms
300x62x403
11.8 x 2.5 x 14.9
11
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
frequency response
input impedance
low level inputs
high level inputs
input sensitivity
low level inputs
high level inputs
power supply voltage
matching speaker impedance
stereo mode
bridged mode
maximum current draw
dimensions (WxHxL)
mm
inches
PB
645X
4 channel amplifier
35 Watts x 4
55 Watts x 4
250 Watts x 4
14.4V DC Neg. Ground (10.5-16V)
20 A 30 A
300x62x355
11.8 x 2.5 x 13.9
features and controls
4 ch amp PB
10
45X•PB
1845X
pb1045X
pb1845X
ch 3/4 high pass frequency control
ch 3/4 crossover mode selector switch
ch 3/4 input level control
ch 3/4 bass boost level control
ch 3/4 low pass frequency control
ch 3/4 low level inputs
ch 3/4 high level inputs
power LED
protection LED
speaker connections
speaker connections
ch 1/2 high pass frequency control
ch 1/2 crossover mode selector switch
ch 1/2 input level control
ch 1/2 bass boost level control
ch 1/2 low pass frequency control
12
Remote Bass Boost
ch 1/2 high level inputs
ch 1/2 low level inputs
power terminals
power fuse
power terminals
power fuse
dual crossover mode selectors
dual input level controls
dual low pass frequency controls
dual high pass frequency controls
dual bass boost level controls
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
features and specifications
4 ch amp PB1045X • PB1845X
when used with normal, full range systems, set these switches to“FULL.”
If you wish to use the internal crossovers to power a driver of specific
frequency range, use the “LOWPASS” or “HIGHPASS” settings.
use these controls to match the outputs of your head unit tothe amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level controls until distortion begins to occur, and reduce slightly
from this point.
when one or both of the crossover selector switches is in “low pass”
mode, one can set the upper frequency limit for audio program sent to
the speakers.
when the one or both of crossover selector switchis in “highpass” mode,
one can set the lower frequency limit for audio program sent to the
speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB in either or both pairs of channels.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
frequency response
input impedance
low level inputs
high level inputs
input sensitivity
low level inputs
high level inputs
power supply voltage
matching speaker impedance
stereo mode
bridged mode
maximum current draw
dimensions (WxHxL)
mm
inches
PB
1045X
4 channel amplifier
75 Watts x 4
110 Watts x 4
400 Watts x 4
40 A 50 A
300x62x475
11.8 x 2.5 x 18.7
PB
1845X
4 channel amplifier
125 Watts x 4
200 Watts x 4
500 Watts x 4
15 Hz-30 KHz
10K Ohms
100 Ohms
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
2-4 Ohms
4-8 Ohms
300x62x499
11.8 x 2.5 x 19.6
13
pb445X
pb545X
pb945X
electrical connections
2 ch amp PB445X • PB545X • PB945X
14
12V battery
head unit
to remote turn-on
+12V
pb645X
pb845X
pb1045X
electrical connections
4 ch amp PB645X • PB845X • PB1045X• PB1845X
PB645X • PB845X • PB1045X
pb1845X
PB1845X
12V battery
15
head unit
to remote turn-on
+12V
12V battery
head unit
to remote turn-on
+12V
pb445X
pb545X
pb945X
using
low level inputs
head unit
L/R Audio
Outputs
stereo input connections
2 ch amp PB445X • PB545X • PB945X
head unit
16
PLEASE NOTE! If using high
level inputs, do not use the
using
high level inputs
low level RCA inputs at the
same time!
LL RR
from spealer terminals
wiring harness
pb445X
pb545X
pb945X
using low level inputs
To a second amplifier
mono input connections
2 ch amp PB445X • PB545X • PB945X
head unit
17
PLEASE NOTE! If using high
Y Adaptors
using high level inputs
head unit
level inputs, do not use the
low level RCA inputs at the
same time!
To a second amplifier
RRLL
wiring harnesswiring harness
from spealer terminals
pb645X
pb845X
pb1045X
2/4 channel input connections
4 ch amp PB645X • PB845X • PB1045X• PB1845X
4 CH input connections using low level inputs
pb1845X
L/R FRONT
Audio Outputs
2 CH input connections using low level inputs
Y adaptors
L/R REAR
Audio Outputs
head unit
18
L
R
pb645X
pb845X
pb1045X
pb1845X
high level
4 ch amp PB645X • PB845X • PB1045X• PB1845X
4 CH floating ground connections
input connections
1
9
4 CH harness wiring for common ground connections
ORANGE
BLACK
BLACK
ORANGE
PLEASE NOTE! If using high level
inputs, do not use the low level
RCA inputs at the same time!
LRFRONT L R REAR
from speaker terminals
ORANGE
BLACK
BLACK
ORANGE
CH 3/4
ORANGE
BLACK
BLACK
ORANGE
CH 1/2
LRFRONT RL REAR
ORANGE
BLACK
BLACK
ORANGE
from speaker terminals
mono
input connections
4 ch amp PB645X • PB845X • PB1045X• PB1845X
pb645X
pb845X
pb1045X
pb1845X
4 CH mono input connections using
RIGHT FRONT Audio Outputs
2 CH mono input connections using
low level inputs
RIGHT REAR Audio Outputs
LEFT REAR Audio Outputs
LEFT FRONT Audio Outputs
low level inputs
L
head unit
20
Y adaptors
R
pb645X
pb845X
pb1045X
high level mono
4 ch amp PB645X • PB845X • PB1045X• PB1845X
4 CH floating ground connections
input connections
pb1845X
PLEASE NOTE! If using high level
inputs, do not use the low level
RCA inputs at the same time!
ORANGE
BLACK
BLACK
ORANGE
RL
from speaker terminals
for common ground connections
ORANGE
BLACK
BLACK
ORANGE
4 CH harness wiring
ORANGE
BLACK
BLACK
ORANGE
CH 3/4
21
CH 1/2
RL
ORANGE
BLACK
BLACK
ORANGE
from speaker terminals
pb445X
pb545X
pb945X
speaker connections
2 ch amp PB445X • PB545X • PB945X
Stereo Output Mode
22
Bridged Mono Output Mode
LEFT speaker
RIGHT speaker
speaker
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS!
pb645X
pb845X
speaker connections
4 ch amp PB645X • PB845X • PB1045X• PB1845X
4 CH Output Mode
pb1045X
pb1845X
Bridged Dual Mono Output Mode
LR
REAR speakers
speakers
LR
RL
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS!
FRONT speakers
23
L
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS!
R
pb645X
pb845X
speaker connections
4 ch amp PB645X • PB845X • PB1045X• PB1845X
2 CH Bridged Output Mode with Subwoofer Output
pb1045X
pb1845X
SUBWOOFER
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS!
L
R
SPEAKERS
SUBWOOFER
R
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS!
L
24
F
mounting and installation
mounting
wiring tips
fuses
Your new Pyramid Royal Red Series amplifier comes complete with all required mounting hardware. When determining a suitable location in your vehicle for the amp, please
remember that it is a high-power electronic device capable of generating high heat.
For this reason, always choose a location in your vehicle which has low vibration, adequate ventilation, a minimum of dust, and no moisture. Be sure to
mount the amp in such a manner as to allow reasonable airflow over the cooling fins.
Mark the location for the mounting screw holes by positioning the amp where you wish to install it and use a scribe (or one of the mounting screws) inserted in each
of the mounting holes to mark the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen.
Before attempting to drill the mounting holes, take note of any wires, lines or other devices in your vehicle which may be located behind the mounting
surface! Then drill pilot holes in the mounting surface for the mounting screws and insert them. Tighten the screws securely.
When making electrical connections to your amplifier, please observe the
following:
Use at least 8 gauge wire for power and ground connections.
Wire the amplifier directly to the car battery.
For the ground connection, use the shortest possible wire to a good chassis ground point.
Wire the Remote connection to the auto start lead of your head unit, equalizer or power antenna.
About power fuses:
Pyramid Royal Red Series amplifiers feature built-in fuse systems. These fuses protect both
the amplifier and the electrical system in your vehicle from fault conditions. If you ever need
to replace the fuse in your Pyramid Royal Red Series amp, use a fuse of exactly the same type
and rating. A different type or rating of fuse may result in damage or fire.
25
protection
circuitry
The built-in protection circuitry in thePyramid Royal
Red amplifiers will disable the amplifier if it senses
an input overload, a speakershort circuit, or extreme
temperature conditions.
troubleshooting
No output.
Confirm that all terminal strip connections are secure and tight.
Check both in-line and built-in fuses. Both the +12V andthe Remote terminals must have +12v referenced to chassis
ground.
When the protection circuit is activated by any of
these conditions, the Protection LED will be
illuminated.
If this occurs, carefully inspect the system to
determine the source of the problem.
• If the shutdownwas a result of a thermal overload
condition, allow the amplifier to cool down before
attempting to restart it.
• If the shutdown was a result of an input overload,
or speaker short circuit, be sure to correct the
condition before restarting.
The amplifier can be restarted by turningthe remote
power OFF and then ON again.
Confirm that the audio signal source (car radio, equalizer, etc.) is connected and is supplying output signal. To
check if the amp is supplying signal, unplug the cables from the signal source (but leave them plugged into the
amp). Briefly tap the center pin of each of the disconnected RCA plugs with your finger. This should produce a noise
(feedback) in your speakers.
Only one channel works.
Confirm that all terminal strip connections are secure and tight.
Check the Balance control on the head unit (or other source) to verify that it is set to its midpoint.
If you are using the Low Level RCA input, reverse the input plugs at the amplifier (i.e., switch the L with the R). If
the channels which is silent switches to the other side, the problem is either in the head unit/other source or the
connecting cables.
Weak output.
Readjust the Input Level Control(s) to better suit the input signal.
Noise in the audio.
If the noise is a “whine” whose pitch follows the engine speed, confirm that the amplifier and any other signal
sources (head unit, etc.) are properly grounded.
If the noise is a “clicking” or “popping” noise whose rate follows the engine speed, this usually means that the
vehicle is equipped with resistor spark plugs and wires, or that the ignition is in need of service.
Check the rounting of the speaker and input wires to make sure they are not adjacent to wires which interconnect
lights and other accessories.
If the above steps fail to improve or clear noise interference, the system should be checked by a professional mobile
audio installer.
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precautions notes
Do not operate the amplifier when it is unmounted.
Attach all audio system components securelywithin
the automobile to prevent damage, especially in an
accident.
Do not mount this amplifier so that the wire
connections are unprotected, or in a pinched
condition, or likely to bedamaged by nearby objects.
Before making or breaking power connections in
your system, disconnect the vehiclebattery. Confirm
that your head unit or other equipment is turned off
while connecting the input jacks and speaker
terminals.
If you need to replace the power fuse, do so only
with a fuse identicalto that supplied withthe amplifier.
Using a fuse of a different type or rating may result
in damage that isn’t covered in the manufacturer’s
warranty.
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