Pyramid Car Audio PB310SX User Manual

COMPETITION AMPLIFIER  
2-OHM STABILITY  
PB 310 SX  
PB 610 SX  
PB 800 SX  
PB 1000 SX  
OWNER’S MANUAL  
PYRAMID SERIES  
2-OHM OPERATION  
This unit was designed to operate efficiently at loads down to 2 ohms.  
What this means is that you can do an installation of FOUR-8 ohm speak-  
ers per channel using parallel wiring or TWO-4 ohm speakers per channel  
in parallel.  
When operating at 2 ohms, the amplifier to increase their power output  
by approximately 50 percent. The current draw of the amplifiers will also  
increase by about the same as amount. Be sure that you have enough  
current to run the amplifier into a 2 ohm load otherwise distorted music will  
be reproduced.  
Do not use a 2 ohm load in the bridged mode.  
The amplifier accepts 4-8 ohms only in the bridged mode.  
-2-  
PYRAMID SERIES  
FEATURES  
PB 310 SX  
TWO CHANNEL BRIDGEABLE AMPLIFIER  
300 WATTS X 2 OUTPUT  
600 WATTS X 1 BRIDGED OUTPUT  
VARIABLE GAIN CONTROL  
REMOTE TURN ON/OFF  
2 OHM STEREO STABLE  
MOSFET PULSE WIDTH MODULATED POWER SUPPLY  
VARIABLE BASS BOOST ( 0-18 dB @ 60HZ)  
VARIABLE TREBLE BOOST (0-12 dB @ 10KHZ)  
GOLD PLATED RCA HIGH IMPEDANCE INPUTS  
SPEAKER TERMINAL BARRIER STRIP  
SOFT TURN-ON CIRCUIT  
HEAVY DUTY ALUMINUM ALLOY HEATSINK  
DC TO DC CONVERTER CIRCUITRY  
POWER ON & DIAGNOSTIC LED INDICATOR  
SIGNAL TO NOISE RATIO: GREATER THAN 90dB  
DISTORTION: LESS THAN 0.05% @RMS POWER  
FREQUENCY RESPONSE : 10HZ-30KHZ  
INPUT SENSITIVITY: 100MV-1V ADJUSTABLE  
INPUT IMPEDANCE: 10K OHMS  
OVERLOAD PROTECTION  
THERMAL SHUTDOWN  
DIMENSIONS: 209MM(L) X 242MM(W) X 64MM(H)  
-3-  
PYRAMID SERIES  
FEATURES  
PB 610 SX  
FOUR CHANNEL BRIDGEABLE AMPLIFIER  
250 WATTS X 4 OUTPUT OR  
500 WATTS X 2 BRIDGED OR  
250 WATTS X 2 + 1 X 500 W  
VARIABLE GAIN CONTROL  
REMOTE TURN ON/OFF  
2 OHM STEREO STABLE  
TWIN MOSFET PULSE WIDTH MODULATED POWER SUPPLIES  
VARIABLE BASS BOOST ( 0-18 dB @ 60HZ)  
VARIABLE TREBLE BOOST (0-12 dB @ 10KHZ)  
GOLD PLATED RCA HIGH IMPEDANCE INPUTS  
SPEAKER TERMINAL BARRIER STRIP  
SOFT TURN-ON CIRCUIT  
HEAVY DUTY ALUMINUM ALLOY HEAT SINK  
DC TO DC CONVERTER CIRCUITRY  
POWER ON & DIAGNOSTIC LED INDICATOR  
SIGNAL TO NOISE RATIO: GREATER THAN 90dB  
DISTORTION: LESS THAN 0.05% @RMS POWER  
FREQUENCY RESPONSE : 10HZ-30KHZ  
INPUT SENSITIVITY: 100MV-1V ADJUSTABLE  
INPUT IMPEDANCE: 10K OHMS  
OVERLOAD PROTECTION / SHORT CIRCUIT PROTECTION  
THERMAL SHUTDOWN  
DIMENSIONS: 350MM(L) X 242MM(W) X 64MM(H)  
-4-  
PYRAMID SERIES  
FEATURES  
PB 800 SX  
FOUR CHANNEL BRIDGEABLE AMPLIFIER  
300 WATTS X 4 OUTPUT OR  
600 WATTS X 2 BRIDGED OR  
300 WATTS X 2 + 1 X 600 W  
VARIABLE GAIN CONTROL  
REMOTE TURN ON/OFF  
2 OHM STEREO STABLE  
TWIN MOSFET PULSE WIDTH MODULATED POWER SUPPLIES  
VARIABLE BASS BOOST ( 0-18 dB @ 60HZ)  
VARIABLE TREBLE BOOST (0-12 dB @ 10KHZ)  
GOLD PLATED RCA HIGH IMPEDANCE INPUTS  
SPEAKER TERMINAL BARRIER STRIP  
SOFT TURN-ON CIRCUIT  
HEAVY DUTY ALUMINUM ALLOY HEAT SINK  
DC TO DC CONVERTER CIRCUITRY  
POWER ON & DIAGNOSTIC LED INDICATOR  
SIGNAL TO NOISE RATIO: GREATER THAN 90dB  
DISTORTION: LESS THAN 0.05% @RMS POWER  
FREQUENCY RESPONSE : 10HZ-30KHZ  
INPUT SENSITIVITY: 100MV-1V ADJUSTABLE  
INPUT IMPEDANCE: 10K OHMS  
OVERLOAD PROTECTION / SHORT CIRCUIT PROTECTION  
THERMAL SHUTDOWN  
REMOTE BASS BOOST  
DIMENSIONS: 380MM(L) X 242MM(W) X 64MM(H)  
-5-  
PYRAMID SERIES  
FEATURES  
PB1000 SX  
FOUR CHANNEL BRIDGEABLE AMPLIFIER  
400 WATTS X 4 OUTPUT OR  
800 WATTS X 2 BRIDGED OR  
400 WATTS X 2 + 1 X 800 W  
VARIABLE GAIN CONTROL  
REMOTE TURN ON/OFF  
2 OHM STEREO STABLE  
TWIN MOSFET PULSE WIDTH MODULATED POWER SUPPLIES  
VARIABLE BASS BOOST ( 0-18 dB @ 60HZ)  
VARIABLE TREBLE BOOST (0-12 dB @ 10KHZ)  
GOLD PLATED RCA HIGH IMPEDANCE INPUTS  
SPEAKER TERMINAL BARRIER STRIP  
SOFT TURN-ON CIRCUIT  
HEAVY DUTY ALUMINUM ALLOY HEAT SINK  
DC TO DC CONVERTER CIRCUITRY  
POWER ON & DIAGNOSTIC LED INDICATOR  
SIGNAL TO NOISE RATIO: GREATER THAN 90dB  
DISTORTION: LESS THAN 0.05% @RMS POWER  
FREQUENCY RESPONSE : 10HZ-30KHZ  
INPUT SENSITIVITY: 100MV-1V ADJUSTABLE  
INPUT IMPEDANCE: 10K OHMS  
OVERLOAD PROTECTION / SHORT CIRCUIT PROTECTION  
THERMAL SHUTDOWN  
REMOTE BASS BOOST  
DIMENSIONS: 410MM(L) X 242MM(W) X 64MM(H)  
-6-  
PB310SX  
PB310SX STEREO MODE  
CONNECTIONS  
-7-  
PB310SX  
PB310SX BRIDGED MODE  
CONNECTIONS  
SPEAKERS NEGATIVE TERMINALS ON AMPLIFIER ARE NOT USED IN BRIDGED  
MODE BRIDGING IS DONE BY SUMMING POSITIVES.  
CONNECT THE NEGATIVE SPEAKER TERMINAL TO THE POSITIVE TERMINAL OF  
CH2 (R-CH) ON THE AMPLIFIER BE SURE TO SELECT BRIDGED SWITCH KNOB FOR  
PROPER OPERATION.  
BRIDGED MODE INPUT WIRING  
CAR SIGNAL INPUT (RCA LINE OUT) MUST BE CONNECTED TO ONLY EACH "L"  
CHANNEL (BRIDG SWITCH KNOB SHOULD BE SELECTED MO). IF CAR SIGNAL  
INPUT IS CONNECTED TO "R" CHANNEL THERE SHALL BE NO POWER OUT (NO  
SOUND).  
-8-  
PB610SX/ PB800SX/ PB1000SX  
PB610SX/ PB800SX/ PB1000SX STEREO MODE  
CONNECTIONS  
NOTE: REMOTE BASS BOOST IS A FEATURE OF PB800SX AND PB1000SX  
-9-  
PB610SX/ PB800SX/ PB1000SX  
PB610SX/ PB800SX/ PB1000SX BRIDGED MODE  
CONNECTIONS  
A. TWO-SPEAKER SYSTEM  
-10-  
PB610SX/ PB800SX/ PB1000SX  
PB610SX/ PB800SX/ PB1000SX BRIDGED MODE  
CONNECTIONS  
B. THREE-SPEAKER SYSTEM  
-11-  
PYRAMID SERIES  
MECHANICAL INSTALLATION  
Mark the locations for the mounting screw holes by holding the AMPLI-  
FIER in place and using a scribe or one of the mounting screws inserted in  
each mounting hole in turn to mark the mounting surface. If the mounting  
surface in carpeted, measure the hole centers and mark with a felt-tip pen.  
Drill pilot holes for the mounting screws into the holes of the system insert  
the mounting screws into the holes and tighten them securely.  
*WARNING*  
Investigate the layout of your automobile thoroughly before drill-  
ing or cutting any holes. Take care when you work near the gas tanks,  
lines, or hydraulic lines, and electrical wiring. Don't use power ampli-  
fier unmounted. Attach this system securely to the automobile to pre-  
vent damage, particularly in the event of an accident.  
Don't mount this system so that the wire connections are unpro-  
tected or are subject to pinching or damage from nearby objects.  
The +12VDC power wire must be fused at the battery positive termi-  
nal connection. Before making or breaking power connections at this  
system power terminals, disconnect the +12V wire at the battery end.  
Confirm your radio/cassette player and/or other equip is turned off  
while connecting the input jacks and speaker terminals.  
If you need to replace the power fuse, replace it only with a fuse  
identical to that supplied with the system. Using a fuse of different type  
or rating may result in damage to this system which isn't covered by  
the warranty.  
-12-  
PYRAMID SERIES  
ELECTRICAL INSTALLATION  
1. Connect the power ground terminal to the nearest point on the chassis  
of the car keep this ground wire less than one meter(39") in length. Use  
#8 wire.  
2. Connect the remote terminal to the remote output of the head unit  
using #14 wire.  
3. Connect an empty fuse holder within 300mm (12") of the battery and  
run a #8 or larger high quality cable from this fuse to the amplifier  
location.  
4. Make sure there is no fuse in the fuse holder. Then make the connec-  
tion to the "BATT" connection on the amplifier.  
5. If multiple amplifiers are being used, either run separate cables. (each  
with its own fuse at the battery) or a #0 or #2 cable from the fuse holder  
at the battery to a distribution block at or near the amplifier's location.  
6. Connect all line inputs and outputs using high-quality RCA-RCA cables.  
7. Insert fuse(s) at the battery fuse holder(s).  
8. Recheck all connections before powering up.  
9. Set all level controls to their least sensitive positions and set all crossover  
controls, switches, etc. to the desired frequency or position.  
10. Once the system is powered up, set the volume control on the head  
unit to about the 2 o'clock position, and then set all the amplifiers, level  
control for maximum sound pressure.  
11. When bridging the amplifiers be sure to change the stereo/mono switch  
knob to the in position for the appropriate channels to bridge.  
12. Further fine turning of the various controls may be necessary to obtain  
the desired results.  
PLEASE NOTE:  
The gain control of any car audio amplifier should not be mistaken for a  
volume control. It is a sophisticated device to match the output level of  
your source unit to the input level of the amplifier. Do not adjust the level to  
maximum unless your input level requires it. Not following this instruction  
will result in an input overload to the amplifier and high levels of distorted  
musical reproduction.  
-13-  
PYRAMID SERIES  
SPECIFICATIONS  
PB310SX  
2 x 150  
PB610SX  
4 x 125  
PB800SX  
PB1000SX  
4 x 200  
RMS Power per channel  
at 4 Ohms  
4 x 150  
Peak Power per channel  
at 4 Ohms  
2 x 300  
1 x 600  
4 x 250  
2 x 500  
4 x 300  
2 x 600  
4 x 400  
2 x 800  
Bridged power at 4 Ohms  
RMS power per channel  
at 2 Ohms  
2 x 200  
4 x 175  
4 x 250  
4 x 350  
Minimum Speaker  
Impedance  
2 OHM  
THD  
Less Than 0.05%  
10Hz ---- 30KHz (-3dB)  
100mV ---- 1V  
10K OHM  
Frequency Response  
Input sensitivity  
Input Impedance  
Signal-to-Noise Ratio  
Channel Separation  
Treble boost  
>90dB  
>65dB  
0 --12 dB (10KHz)  
0 --18dB (60Hz)  
Bass boost  
Dimensions  
(WxHxL)  
242x64x209 242x64x350 242x64x380 242x64x410  
mm  
mm  
mm  
mm  
FUSE  
20A  
20A x 2  
20A x 2  
25A x 2  
BUILT-IN ELECTRONIC TREBLE & BASS  
The TREBLE is adjustable form 0 ~ +12dB Boost at 10KHz  
The BASS is adjustable from 0 ~ +18dB Boost at 60Hz  
BASS FREQUENCY  
TREBLE FREQUENCY  
-14-  
PYRAMID SERIES  
TROUBLE SHOOTING GUIDE  
SYMPTOM:  
CHECK:  
CURE:  
Have your dealer inspect the speakers.  
Amp turning off at low Check speakers for dam-  
volume levels  
age or short  
Check fuses in amplifier.  
No Sound  
Is the power LED illumi-  
nated ?  
Be sure Turn-on lead is connected  
Check signal leads. Check gain control.  
Check Tuner/Deck volume level.  
Clean contacts on fuse holders.  
Check for speaker short or amplifier  
overheating.  
No Sound  
Is the Diagnostic LED  
illuminated?  
Inspect for short circuit or an open connection.  
No sound in one chan- Check speaker leads  
nel  
Reverse Left and Right RCA inputs to determine  
if it is occurring before the amp.  
Check Audio Leads  
Change switches to ensure proper position with  
respect to the installation.  
Check Mono Bridge and  
Amp  
Sub woofer Switches  
Be sure proper speaker load impedance rec-  
ommendations are observed.  
Amp turning off at me- Check speaker load im-  
dium or high volume pedance  
levels  
(If you use an ohmmeter to check speaker  
resistance, please remember that DC resistance  
and AC impedance may not be the same.)  
-15-  

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