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COMPETITION AMPLIFIER
2-OHM STABILITY
PB 310 SX
PB 610 SX
PB 800 SX
PB 1000 SX
OWNER’S MANUAL
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PYRAMID SERIES INTRODUCTION Thank you for purchasing a Pyramid car audio amplifier. Rest assured you have purchased a quality product designed and engi- neered to give you many years of uncompromised musical service. This amplifier has been designed using the latest in electronic technol- ogy available today and will provide you with years and years of high quality sound level amplification and reproduction. This amplifier have been designed with a fully regulated 100% MOSFET Power supplies assu
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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
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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
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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 •
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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 •
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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 •
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PB310SX CONNECTIONS PB310SX STEREO MODE -7-
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PB310SX CONNECTIONS PB310SX BRIDGED MODE 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 THE
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PB610SX/ PB800SX/ PB1000SX CONNECTIONS PB610SX/ PB800SX/ PB1000SX STEREO MODE NOTE: REMOTE BASS BOOST IS A FEATURE OF PB800SX AND PB1000SX -9-
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PB610SX/ PB800SX/ PB1000SX CONNECTIONS PB610SX/ PB800SX/ PB1000SX BRIDGED MODE A. TWO-SPEAKER SYSTEM -10-
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PB610SX/ PB800SX/ PB1000SX CONNECTIONS PB610SX/ PB800SX/ PB1000SX BRIDGED MODE B. THREE-SPEAKER SYSTEM -11-
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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 l
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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 conne
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PYRAMID SERIES SPECIFICATIONS PB310SX PB610SX PB800SX PB1000SX RMS Power per channel 2 x 150 4 x 125 4 x 150 4 x 200 at 4 Ohms Peak Power per channel 2 x 300 4 x 250 4 x 300 4 x 400 at 4 Ohms Bridged power at 4 Ohms 1 x 600 2 x 500 2 x 600 2 x 800 RMS power per channel 2 x 200 4 x 175 4 x 250 4 x 350 at 2 Ohms Minimum Speaker 2 OHM Impedance THD Less Than 0.05% Frequency Response 10Hz ---- 30KHz (-3dB) Input sensitivity 100mV ---- 1V Input Impedance 10K OHM Signal-to-Noise Ratio >90dB Channel Se
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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- Be sure Turn-on lead is connected nated ? Check signal leads. Check gain control. Check Tuner/Deck volume level. Clean contacts on fuse holders. Check for speaker short or amplifier No Sound Is the Diagnostic LED overheating. illuminated? Inspect for short circuit or
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