Manley AMPLIFIERS Owner's Manual
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SPECIFICATIONS (250W)ALL-TUBE monoblock design: uses 10 x EL34JJ output tubesDriver Stage: High current double 12BH7EH (x2)Input Tube: 12AT7WA Ei large plateBALANCED & UNBALANCED inputs: RCA and XLR jacks (switchable)MUTE switch: on front panelTRIODE / TETRODE switching: on front panelSOFT-START turn on mode: minimizes in-rush current by first powering up amplifier to half voltagesEVER-WARM mode: for standby keeps tubes warmed up at half voltagesMANLEY Precision Output Transformer: designed and wound at Manley LabsFront panel bias measurement and adjust: Concealed under the black oval insertOutput Tube Standing Current: 27.5mASet Bias for: 275mVDC measured across each bias tip jack to groundLarge filter / reservoir capacitors: 3800uF x 2Angled rear of chassis: provides for easy connectionsWBT binding posts: CE compliant for European modelsInput Sensitivity: 1V for full powerInput Sensitivity Triode: 174mV for 1 watt into 8 ohmsInput Sensitivity Tetrode: 146mV for 1 watt into 8 ohmsGain Triode: 30dBGain Tetrode: 32dBInput Impedance RCA: 116 Kohm @ 1KHzInput Impedance XLR: 270 Kohm @ 1KHz; 20Kohms @ 20KHz; 38Kohm @ 20HzActual Output Impedance Triode: 0.538 ohmActual Output Impedance Tetrode: 0.465 ohmOptimum Speaker Load: 5 ohmsDamping Factor Triode: 14.8Damping Factor Tetrode: 17.2S/N Ratio Ref 1W into 8 ohms: -80 dB; -90dB A-WGTDynamic Range: 93dBFLAT frequency response: 10 Hz - 30 KHz continuousFull Power Tetrode: 250W @ 1.5% THD into 5 ohmsFull Power Triode: 100W @ 1.5% THD into 5 ohmsPower Consumption: 30 Watts in "EVER-WARM" modeMaximum Power Consumption: 815 Watts at full powerOperating Mains Voltage: Factory set for 100V, 120V or 220-240VAC operation for original destinationcountry's mains voltage.Operating Mains Voltage: changeable with power transformer re-wiring and fuse value change.Mains Voltage Frequency: 50~ 60HzMains Fuse 100-120VAC operation: MDA 10 Amp SLO-BLO Ceramic Time-Delay fuseMains Fuse 220-240VAC operation: MDA 8 Amp SLO-BLO Ceramic Time-Delay fuseB+ Fuse: MDA 1 1/2A SLO-BLO Ceramic Time-Delay fuseBadge Illumination: Units produced before 4/2003 use 8V, 0.3A "Fuse-Lamp" 1/4" X 1 1/4"Serial numbers after N250188 use LED illumination which probably won't burn outPower Cord: Detachable IEC standard. Appropriate power cord supplied for destination countryDimensions: W=19" x D=13" x H=9"Shipping Weight: 73 Lbs. each12 |
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