Owner’s Manual SA3000/SA5500/SA9500 Amplifiers
©1997 Numark Industries 2 http://www.numark.
SAFETY FIRST! WARNING - TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. WATER AND ELECTRICITY DO NOT MIX. Keep this unit away from water. If water or other liquids are spilled on or into this unit, unplug the power cord immediately from the wall socket (with DRY HANDS) and get a qualified service technician to check it out before using. Keep this unit away from heaters, radiators and other heat producing devices. DO NOT ATTEMPT TO SERVICE THIS UNIT.
©1997 Numark Industries 4 http://www.numark.
Contents Warning and Safety Instructions 3 Introduction 6 Front-Panel Description 7 Back-Panel Description 8 Audio Terms 10 Hook-up #1: Home Studio Reference Amp Hook-up #2: Mobile DJ Stereo PA Hook-up #3: Monitor Amplifier Hook-up #4: Stereo PA System 12 12 13 13 Specifications 14 Block Diagram 15 Warranty and Service Information 16 ©1997 Numark Industries 5 http://www.numark.
Introduction Thank you for choosing a Performance Series power amplifier from Numark. These units are designed to provide a good combination of power, audio clarity, and reliable operation. The basic circuit has been kept as simple as possible to reduce the amount of components, thereby shortening the signal path, coloration and the chance of component failure. However, we opted to add what we regard as essential protection against overheating, short circuits and power on transients.
Front Panel Description 1. Gain Controls These two knobs are the level controls for each channel of the amplifier. The gain increases as the knob is turned clockwise. The SA5500 features detented gain controls with dB calibrations to simplify set up. The protect light will also come on if the speaker terminals are short circuited, or the impedance of the load between them is too low. In these circumstances, the protect LED will stay lit until the fault condition is rectified.
Back Panel Description 6. Neutrick Connector Inputs a. Balanced XLR Inputs These combined inputs are commonly used for both mobile and installation set ups. The XLR provide a good combination of ease of connection and resistance to corrosion. They are wired as per the following convention: 8. Binding Post Outputs BRIDGED MONO + speaker speaker - These are suitable for banana plugs, spade lugs or bare wires.
3. ensure that there is only one input signal connected to channel 1 of the amplifier - channel 2 input must be vacant IMPORTANT: NEVER SWITCH BETWEEN STEREO AND BRIDGED MONO OPERATION WHEN THE AMPLIFIER POWER IS ON. 4. switch the amplifier to bridged mono (back panel switch) 11. Limiter On / Off Switch In cases where a dedicated compressor / limit unit precedes the SA5500, some users may seek to disable the on board limiting.
Audio Terms Gain This is the factor by which an input signal is amplified (increased) or attenuated (reduced) when passing through an amplifier. Gain is generally measured in decibels (dB) which is a logarithmic ratio of input to output. Unity or zero gain means that the signal comes out at the same level that it went in. With all this gain available, it may seem tempting to turn the amp up to full to get the loudest sound possible.
The variable resistor is to ensure an impedance balance between the positive and negative inputs, and should be adjusted until any hum is at a minimum. damping factor of 67. Increasing the cable length to 320ft of 8 gauge, the losses are 5% and the damping factor is just 18.2. Balanced lines are also the most effective means of reducing or eliminating RF or ‘radio frequency interference’. Long unbalanced cable runs are likely to pick up radio signals.
Hook up #1 Home Studio Reference Amplifier mixer outputs AMPLIFIER OUTPUTS + CH-2 CH-2 AMPLIFIER INPUTS CH-2 CH-1 CH-1 CH-1 + - GND - + Numark amplifier power reference monitors Hook up #2 Mobile DJ Stereo PA Numark mixer main outputs AMPLIFIER OUTPUTS + CH-2 CH-2 AMPLIFIER INPUTS CH-2 CH-1 CH-1 CH-1 + - GND- + Numark amplifier power speakers ©1997 Numark Industries 12 http://www.numark.
Hook up #3 Monitor Amplifier (in bridged mono) mixer Zone/Booth send AMPLIFIER OUTPUTS + CH-2 CH-2 AMPLIFIER INPUTS CH-2 CH-1 CH-1 CH-1 + - GND - + Numark amplifier power monitor speaker Hook up #4 Stereo PA System mixer outputs compressor or equalizer inputs AMPLIFIER OUTPUTS + CH-2 outputs AMPLIFIER INPUTS CH-2 CH-2 CH-1 CH-1 CH-1 + - GND- + Numark amplifier power speakers ©1997 Numark Industries 13 http://www.numark.
Specifications SA9500 SA5500 SA3000 Frequency response (8 ohms , 20Hz - 20kHz @ 1 W) +0, -1dB +0, -1dB +0, -1dB Total harmonic distortion 0.1% 0.1% 0.1% Signal to noise ratio 102dB 102dB 102dB Slew rate 20V/uS 20V/uS 20V/uS Damping factor >200 >200 >200 Crosstalk 80dB 80dB 80dB 1000W 650W 400W 550W 480W 270W 300W 240W 150W 2000W 1300W 1100W 850W 540W 420W Input sensitivity 8 ohms, 1kHz @ rated power fixed voltage gain 1.22 V RMS 34dB 1.22 V RMS 31dB 1.
Block Diagrams + - + limiting attenuation - clip/limit detector clip/limit short circuit protection SA5500 protect GS level ch1 inputs + voltage amp + GC - + current amp - DC fault thermal power on/off protection ch1 outputs limiter on/off bridged mono gnd ch1 sig + stereo protect clip/limit detector clip/limit short circuit protection ch2 inputs + + - - limiting attenuation level + voltage amp - + current amp DC fault thermal power on/off protection ch2 outputs ch2
Professional Disc Jockey Products LIMITED WARRANTY Numark Industries, LLC and Numark International, Inc. (hereafter “Numark”) warrants each new amplifier manufactured and/or supplied by it to be free from defects in material or workmanship under conditions of normal use and service for 3 years, beginning on the date of purchase from an authorized Numark Dealer, but not to exceed 4 years from date of shipment by Numark.
