Audio Research Reference 250
Contents
1. AC 50Hz 770 watts at rated output 1000 watts maximum 380 watts at idle 1 watt off TUBES REQUIRED 3 Matched pair KT120 Power output V1 6 1 Matched pair KT120 Driver V8 9 2 6H30 Gain stage V7 and Regulator Driver V10 1 6550C Regulator V11 DIMENSIONS 19 48 3 cm W x 8 75 22 2 cm H x 19 5 49 5 cm D Handles extend 1 5 3 8 cm forward WEIGHT 73 lbs 33 2 kg Net 88 Ibs 40 kg Shipping 3900 ANNAPOLIS LANE NORTH PLYMOUTH MN 55447 T 1 763 577 9700 F 1 763 577 0323 www audioresearch com2. REFERENCE 2590 Monaural Power Amplifier The concept of a large monoblock amplifier is to provide control to a speaker The difficult part of the job is maintaining finesse and musicality while doing it Audio Research has produced some of the most critically acclaimed products during its 42 year history and the new Reference 250 aims to break new ground From the moment the music begins the foundation of an exceptional musical experience is evident Sound emerges from an inky black background revealing microdetails and performance cues typically reserved for the live performance Substantial fundamental bass underscores the event with resolution and textural accuracy Space around performers and groups of instruments stretch before you onto a lifelike stage with scale and body Dynamics swing from silent passages to grand fortissimos without effort or strain This is high definition listening The Reference 250 features new enhancements outside as well as major performance advances inside First you will notice a more modern monochromatic appearance including a new front panel with a small aluminum power button An analog meter with adjustable illumination is set in the front panel is capable of displaying power output and tube bias settings A new low turbulence fan provides effective yet silent cooling Internally the Reference 250 is outfitted with the KT120 output tubes and a bulk power supply 50 percent larger than its predecessor Connec
3. tions include accommodation for 4 8 or 16 ohm speakers an XLR input as well as 12 volt trigger connections Visually understated and sonically breathtaking the Reference 250 is unmistakably Audio Research 3900 ANNAPOLIS LANE NORTH PLYMOUTH MN 55447 T 1 763 577 9700 F 1 763 577 0323 www audioresearch com SPECIFICATIONS POWER OUTPUT 250 watts per channel continuous from 20Hz to 20kHz 1kHz total harmonic distortion typically 0 5 at 250 watts below 04 at 1 watt Approximate actual power available at clipping 270 watts 1kHz Note that actual power output is dependent upon both line voltage and condition i e if power line has high distortion maximum power will be affected adversely although from a listening standpoint this is not very critical POWER BANDWIDTH 3dB points 5Hz to 70kHz FREQUENCY RESPONSE 3dB points at 1 watt 0 5Hz to 110 kHz INPUT SENSITIVITY 2 4V RMS Balanced for rated output 25 5 dB gain into 8 ohms INPUT IMPEDANCE 200K ohms Balanced OUTPUT TAPS 4 8 16 ohms OUTPUT REGULATION Approximately 0 9dB 16 ohm load to open circuit Damping factor approximately 10 OVERALL NEGATIVE FEEDBACK 8 8caB SLEW RATE 20 volts microsecond RISE TIME 1 5 microseconds HUM amp NOISE Less than 0 2mV RMS 110dB below rated output IHF A weighted input shorted 16 ohm output POWER SUPPLY ENERGY STORAGE Approximately 900 joules POWER REQUIREMENTS 105 130VAC 60Hz 260 250V
Download Pdf Manuals
Related Search