User manual HAFLER SR2300

[. . . ] Owner's Manual SR2300 SR2600 Table of Contents DECLARATION OF CONFORMITY . 36 ­1 ­ Declaration of Conformity Application of Council Directive: 73/23/EEC (low voltage directive) Application of Council Directive: 89/336/EEC (EMC Directive) Standard(s) to which Conformity is Declared: EN55103-1 (Emissions) EN55103-2 (Immunity) EN60065 (Safety) Manufacturer's Name: Hafler Manufacturer's Address: 546 South Rockford Drive, Tempe, Arizona 85281 Importer's Name: Importer's Address: Type of Equipment: 2-channel Audio Power Amplifier Model No. : Serial Number: Year of Manufacturing: 2000 2001 2002 2003 2004 SR2300CE SR2600CE I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and Standard(s) Place: Hafler Date: 2/1/2000 James C. Strickland, VP Engineering ­2 ­ NOTICE - IMPORTANT SAFETY INFORMATION The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ! enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. [. . . ] A full PWM design is needed, adding a coupled output inductor, a current-sense transformer and a current-mode controller IC. An impedance selector switch is also needed for each channel, simultaneously altering the rail voltage and the current limit. Each channel of the amplifier can be independently optimized for 2, 4, and 8, useful in bi-amping and tri-amping, etc. Instructions on the back of the amplifier explain the various options. UNIVERSAL LINE VOLTAGE INPUT Voltage selection is provided in two bands: 100-140 volts and 200-265 volts, (both 50-60 Hz) via two quick-connect terminals located on the EMI filter board, accessed by removing the top cover. The current-mode control system automatically corrects for the bulk of power line variation with each band. This allows most of the PWM action to be reserved for programming and regulation of output voltages. A flyback topology provides the numerous housekeeping low voltages required by various circuits. PROTECTION CIRCUITS Fan control circuit - Each amplifier channel has a fan control circuit that measures the temperature of the heatsink, and adjusts the fan speed accordingly. This thermally-tracking fan speed circuit keeps fan noise to a minimum when power demands are low. Typically the fans will be turning slowly even at idle conditions - although abnormally low room temperatures may allow the fans to turn off completely. The fan control circuit also has a turn-on blast feature that runs the fans at full speed for a few seconds every time the amplifier is turned on. This serves the dual function of cleaning out the air tunnel, and providing a simple means to check the fans for proper operation. If you suspect that the fans are not operating correctly, try turning the amplifier off, then listening or feeling for the turn-on blast when the amplifier is turned back on. Thermal Standby - If excessive heatsink temperature is detected, the individual amplifier channel will go into thermal standby mode. The amplifier will be turned off, and the THERMAL LED illuminates until heatsink temperatures return to normal. At that time the amplifier automatically turns back on, and continues operating normally. NOMAD protection - The amplifier output MOSFETs are protected from excessive power dissipation by NOMAD protection circuitry. NOMAD (Non-Multiplying Advance Decision) limits the power when it measures signal voltage and current conditions that will exceed the pre-determined power limit of the MOSFETs. This instantaneous power calculation is performed on each output MOSFET, causing the amplifier to automatically limit power when needed. In this way, a speaker load with an impedance "dip" over a particular frequency range will only activate the NOMAD protection when sufficient audio is present at that same frequency range, but continue operating normally otherwise. Short protection - The NOMAD protection circuit also protects against shorts, and will instantly limit the output power if speaker wires are shorted together. Normal operation will continue immediately after the short is removed. Power Supply Current Limiting protection- The switching power supply will protect itself from excessive power dissipation by continuously monitoring currents in the switching MOSFETs. [. . . ] (1200W-SR2600, 600W-SR2300) 70V MONO MODE (SR2300/SR2600) Load 100V 70V 8 4 2 Power 100V 70V 8 4 2 100V 70V 100V 70V SR2300 ­ 3 SR2600 A Division of Rockford Corp. Tempe, AZ 85281 ­+ 1 2 + 300W 2 ­ 8 -- S R 2 3 0 0 Made in the U. S. A. Audio GND Chassis CH A IN CH A 600W 4­ 16 Mono, 70V, 100V Float 300 W Stereo, 2 ­ 8 600W Mono, 70V, 100V BIAMP STEREO OUT -- + + + 300W 2 ­ 8 Attention: Utiliser un fusible de rechange de même type. CAUTION: For continued protection from risk of fire, replace only with same type and rating of fuse. CH B IN (Mono) CH B OUT For 70V, 100V, or Mono · Use CH B input · Load across RED terminals · Set load switches to one half load impedance -- 250V T7A 100V-120V~ 50-60Hz 250W 70 Volt Transformer 70 Volt Transformer etc. Parallel Array 1. Biamp/Stereo switch not active (Stereo/Mono switch overrides this switch when in mono/70V/100V mode). [. . . ]