PB445X
Pyramid PB445X, 545X, 945X, PB645X, PB845X Specifications
...
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
1
mounting and installation
25
protection circuitry and troubleshooting
26
19
20
22
23-24
21
speaker connections
PB645X/PB845X/1045X/1845X
speaker connections
PB445X/545X/945X
high level mono input connections
PB645X/PB845X/1045X/1845X
mono input connections
PB645X/PB845X/1045X/1845X
high level input connections
PB645X/PB845X/1045X/1845X
electrical connections
PB445X/545X/945X
14
PB645X/PB845X/1045X/1845X
15
stereo input connections
PB445X/545X/945X
16
2/4 channel input connections
PB645X/PB845X/1045X/1845X
18
mono input connections
PB445X/545X/945X
17
features and specifications
PB445X
4-5
PB545X
6-7
PB945X
8-9
PB645X/PB845X
10-11
general features
2-3
precautions
27
PB1045X/PB1845X
12-13
general features
2
· 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
PB445X
High Performance 600 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
PB545X
High Performance 800 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
PB945X
High Performance 1000 Watt 2 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
PB645X
High Performance 1000 Watt 4 Channel
Bridgeable MOSFET Amplifier
general features
3
· 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
PB845X
High Performance 1200 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
PB1845X
High Performance 2000 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
PB1045X
High Performance 1600 Watt 4 Channel
Bridgeable MOSFET Amplifier
4
pb445X
features and controls
2 ch amp PB445X
high level inputs
input level control
crossover mode selector
speaker connections
protection LED
low pass frequency control
power terminals
power fuse
bass boost level
low level inputs
power LED
high pass frequency control
5
features and specifications
2 ch amp PB
44
5X
frequency response
power supply voltage
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
input sensitivity
low level inputs
high level inputs
40 Watts x 2
60 Watts x 2
300 Watts x 2
15 Hz-30 KHz
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
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.
maximum current draw
dimensions (WxHxL)
mm
inches
2-4 Ohms
15A
4-8 Ohms
input impedance
low level inputs
high level inputs
10K Ohms
100 Ohms
matching speaker impedance
stereo mode
bridged mode
300x62x259
11.8 x 2.5 x 10.2
6
pb545X
features and controls
2 ch amp PB545X
high level inputs
input level control
crossover mode selector
speaker connections
Remote Bass Boost
low pass frequency control
power terminals
power fuse
bass boost level
high pass frequency control
low level inputs
power LED
protection LED
7
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.
frequency response
power supply voltage
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
input sensitivity
low level inputs
high level inputs
50 Watts x 2
80 Watts x 2
400 Watts x 2
15 Hz-30 KHz
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
maximum current draw
dimensions (WxHxL)
mm
inches
2-4 Ohms
4-8 Ohms
input impedance
low level inputs
high level inputs
10K Ohms
100 Ohms
matching speaker impedance
stereo mode
bridged mode
20A
300x62x285
11.8 x 2.5 x 11.6
8
pb945X
features and controls
2 ch amp PB945X
high level inputs
input level control
crossover mode selector
speaker connections
Remote Bass Boost
low pass frequency control
power terminals
power fuse
bass boost level
high pass frequency control
low level inputs
power LED
protection LED
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