congratulations...
on your purchase of a Pyramid Crystal 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 PB481X, PB681X, PB781X, PB881X, PB1281X,and PB1881X, you’ll know you made the right choice with a Pyramid Power amplifier.
table of contents
general features 2-3
features and specifications
PB481X 4-5
PB781X 6-7
PB1281X 8-9 PB681X/PB881X 10-11
PB1881X 12-13
electrical connections
PB481X/PB781X/PB1281X 14 PB681X/PB881X/PB1881X 15
stereo input connections
PB481X/PB781X/PB1281X 16
mono input connections
PB481X/PB781X/PB1281X 17
2/4 channel input connections
PB681X/PB881X/PB1881X 18
high level input connections |
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PB681X/PB881X/PB1881X |
19 |
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mono input connections |
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PB681X/PB881X/PB1881X |
20 |
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high level mono input connections |
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PB681X/PB881X/PB1881X |
21 |
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speaker connections |
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PB481X/PB781X/PB1281X |
22 |
1 |
speaker connections |
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PB681X/PB881X/PB1881X |
23-24 |
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mounting and installation |
25 |
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protection circuitry and troubleshooting |
26 |
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precautions |
27 |
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general features
PB481X |
PB781X |
PB1281X |
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High Performance 600 Watt 2 Channel |
High Performance 1000 Watt 2 Channel |
High Performance 1600 Watt 2 Channel |
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Bridgeable MOSFET Amplifier |
Bridgeable MOSFET Amplifier |
Bridgeable MOSFET Amplifier |
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· 300 Watts x 2 Output |
· 500 Watts x 2 Output |
· 800 Watts x 2 Output |
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· 600 Watts x 1 Bridged Output |
· 1000 Watts x 1 Bridged Output |
· 1600 Watts x 1 Bridged Output |
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· Variable Hi/Lo Electronic Crossover |
· Variable Hi/Lo Electronic Crossover |
· Variable Hi/Lo Electronic Crossover |
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Network |
Network |
Network |
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· Variable Bass Boost (0 - +18 dB @ 60Hz) |
· Variable Bass Boost (0 - +18 dB @ 60Hz) |
· Variable Bass Boost (0 - +18 dB @ 60Hz) |
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· Variable Input Level (Gain) Control |
· Variable Input Level (Gain) Control |
· Variable Input Level (Gain) Control |
2 |
· Remote Turn On/Off |
· Remote Turn On/Off |
· Remote Turn On/Off |
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· Gold Plated RCA Inputs |
· Gold Plated RCA Inputs |
· Gold Plated RCA Inputs |
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· High Level MOLEX Input |
· High Level MOLEX Input |
· High Level MOLEX Input |
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· Power ON LED Indicator |
· Power ON LED Indicator |
· Power ON LED Indicator |
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· LED Protection Indicator |
· LED Protection Indicator |
· LED Protection Indicator |
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· S/N Ratio: > 95 dB |
· S/N Ratio: > 95 dB |
· Remote Bass Boost |
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· THD: <0.04% |
· THD: <0.04% |
· S/N Ratio: > 95 dB |
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· Thermal Protection |
· Thermal Protection |
· THD: <0.04% |
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· Overload Protection |
· Overload Protection |
· Thermal Protection |
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· Short Circuit Protection |
· Short Circuit Protection |
· Overload Protection |
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· Anti-Thump Turn-On |
· Anti-Thump Turn-On |
· Short Circuit Protection |
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· Anti-Thump Turn-On |
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general features
PB681X |
PB881X |
PB1881X |
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High Performance 1000 Watt 4 Channel |
High Performance 1200 Watt 4 Channel |
High Performance 1800 Watt 4 Channel |
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Bridgeable MOSFET Amplifier |
Bridgeable MOSFET Amplifier |
Bridgeable MOSFET Amplifier |
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· 250 Watts x 4 Output |
· 300 Watts x 4 Output |
· 450 Watts x 4 Output |
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· 500W x 2 Bridged Output (250W x 2 + 500W x 1) |
· 600W x 2 Bridged Output (300W x 2 + 600W x 1) |
· 900W x 2 Bridged Output (450W x 2 + 900W x 1) |
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· Dual Variable Hi/Lo Electronic Crossover Network |
· Dual Variable Hi/Lo Electronic Crossover Network |
· Dual Variable Hi/Lo Electronic Crossover Network |
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· Dual Variable Bass Boost (0 - +18 dB @ 60Hz) |
· Dual Variable Bass Boost (0 - +18 dB @ 60Hz) |
· Dual Variable Bass Boost (0 - +18 dB @ 60Hz) |
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· Variable Input Level (Gain) Control |
· Variable Input Level (Gain) Control |
· Variable Input Level (Gain) Control |
3 |
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· Remote Turn On/Off |
· Remote Turn On/Off |
· Remote Turn On/Off |
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· Gold Plated RCA Inputs |
· Gold Plated RCA Inputs |
· Gold Plated RCA Inputs |
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· High Level MOLEX Inputs |
· High Level MOLEX Inputs |
· High Level MOLEX Inputs |
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· Power ON LED Indicator |
· Power ON LED Indicator |
· Power ON LED Indicator |
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· LED Protection Indicator |
· LED Protection Indicator |
· LED Protection Indicator |
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· S/N Ratio: > 95 dB |
· S/N Ratio: > 95 dB |
· Remote Bass Boost |
|
|
· THD: <0.04% |
· THD: <0.04% |
· S/N Ratio: > 95 dB |
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|
· Thermal Protection |
· Thermal Protection |
· THD: <0.04% |
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· Overload Protection |
· Overload Protection |
· Thermal Protection |
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· Short Circuit Protection |
· Short Circuit Protection |
· Overload Protection |
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· Anti-Thump Turn-On |
· Anti-Thump Turn-On |
· Short Circuit Protection |
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· Tri-Mode Configurable |
· Tri-Mode Configurable |
· Anti-Thump Turn-On |
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· Tri-Mode Configurable |
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pb481X power LED protection LED
high pass frequency control low pass frequency control bass boost level
crossover mode selector
speaker connections
features and controls
2 c h a m p P B 4 8 1 X
low level inputs |
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high level inputs |
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input level control |
4 |
power terminals
power fuse
features and specifications
2 c h a m p P B 4 8 1 X
used with normal, full range systems, set this switch to “FULL.” If to use the internal crossover to power a driver of specific frequency
use the “LOWPASS” or “HIGHPASS” settings.
control to match the outputs of your head unit to the amplifier. 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.
low pass frequency control when the crossover selector switch is in “low pass” mode, this control sets the upper frequency limit for audio program sent to the speakers.
high pass frequency control when the crossover selector switch is in “high pass” mode, this control sets the lower frequency limit for audio program sent to the speakers.
bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB.
low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables.
high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors.
power LED this indicator is illuminated when power is applied.
protection LED this indicator is illuminated when built-in protection circuitry is activated.
power fuse the fuse protects the amplifier and your car’s electrical system from short circuit conditions.
power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier.
speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss.
output power @ 14.4v DC, 1KHz |
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RMS Power @ 4 Ohms |
40 Watts x 2 |
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RMS Power @ 2 Ohms |
60 Watts x 2 |
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Maximum Power Output |
300 Watts x 2 |
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frequency response |
15 Hz-30 KHz |
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input impedance |
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low level inputs |
10K Ohms |
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high level inputs |
100 Ohms |
|
input sensitivity |
|
5 |
low level inputs |
250mV |
|
high level inputs |
2.5V |
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power supply voltage |
14.4V DC Neg. Ground (10.5-16V) |
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matching speaker impedance |
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stereo mode |
2-4 Ohms |
|
bridged mode |
4-8 Ohms |
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maximum current draw |
15A |
|
dimensions (W x H x L) |
|
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mm |
276 x 60 x 209 |
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inches |
10.9 x 2.4 x 8.25 |
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pb781X power LED protection LED
high pass frequency control low pass frequency control bass boost level
crossover mode selector
speaker connections
features and controls
2 c h a m p P B 7 8 1 X
low level inputs |
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high level inputs |
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input level control |
6 |
power terminals
power fuse
features and specifications
2 c h a m p P B 7 8 1 X
crossover mode selector when used with normal, full range systems, set this switch to “FULL.” If you wish to use the internal crossover to power a driver of specific frequency range, use the “LOWPASS” or “HIGHPASS” settings.
input level control 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.
low pass frequency control when the crossover selector switch is in “low pass” mode, this control sets the upper frequency limit for audio program sent to the speakers.
high pass frequency control when the crossover selector switch is in “high pass” mode, this control sets the lower frequency limit for audio program sent to the speakers.
bass boost level control this control permits adjustment of the bass level up to an increase of approximately 18 dB.
low level inputs this amp features gold-plated RCA input jacks for high impedance input. Use these with car stereo output which uses RCA-type connector cables.
high level inputs if your car stereo lacks RCA-type output jacks, you may connect speaker output leads to these input connectors.
power LED this indicator is illuminated when power is applied.
protection LED this indicator is illuminated when built-in protection circuitry is activated.
power fuse the fuse protects the amplifier and your car’s electrical system from short circuit conditions.
power terminals use these connectors to deliver power, ground and remote turn-on control to the amplifier.
speaker connections these terminals are 14K gold plated to guarantee high conductivity and minimum signal loss.
output power @ 14.4v DC, 1KHz |
|
|
RMS Power @ 4 Ohms |
50 Watts x 2 |
|
RMS Power @ 2 Ohms |
75 Watts x 2 |
|
Maximum Power Output |
500 Watts x 2 |
|
frequency response |
15 Hz-30 KHz |
|
input impedance |
|
|
low level inputs |
10K Ohms |
|
high level inputs |
100 Ohms |
|
input sensitivity |
|
7 |
low level inputs |
250mV |
|
high level inputs |
2.5V |
|
power supply voltage |
14.4V DC Neg. Ground (10.5-16V) |
|
matching speaker impedance |
|
|
stereo mode |
2-4 Ohms |
|
bridged mode |
4-8 Ohms |
|
maximum current draw |
15A |
|
dimensions (W x H x L) |
|
|
mm |
276 x 60 x 279 |
|
inches |
10.9 x 2.4 x 11 |
|
features and controls
2 c h a m p P B 1 2 8 1 X
pb1281X |
power LED |
|
protection LED |
|
Remote Bass Boost |
high pass frequency control low pass frequency control bass boost level
crossover mode selector
low level inputs |
|
high level inputs |
|
input level control |
8 |
speaker connections |
power terminals |
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power fuse |