Parasound JCM250 Monoblock Amplifier - Parasound
The Halo JCM250 is an uncompromising mono power amplifier that sets new standards in power and fidelity. With 250 watts at 8 Ω up to 800 watts at 2 Ω, it delivers exceptional audio performance. The balanced XLR and unbalanced RCA inputs ensure compatibility with various audio sources. Its dual-mono design with two transformers provides exceptional channel separation and sonic accuracy. The direct-coupled design, without capacitors in the signal path, preserves signal integrity and enhances transparency.
Product Details:
- Circuitry designed by legendary John Curl
- Ultra-high bias Class A/AB operation
- 5 watts of pure Class A power
- Stable with speaker impedance dips below 1Ω
- Bybee Music Rails- active high frequency filters for input stage
- New John Curl driver stage employs a cascode circuit for greater open loop bandwidth & superior linearity
- Gain switch to select 29 dB or 23 dB gain for optimum compatibility with high gain preamps or extremely efficient speakers
- R-core transformer for input stage suppresses noise on power line
- Dual CHK Infinium, custom 5-way speaker binding posts for easy bi-wiring
- Neutrik locking XLR balanced input & loop output jacks
- Vampire 24k gold-plated RCA input & loop output jacks
- Direct-coupled signal path, no capacitors or inductors in the audio path
- JFET input stage, MOSFET driver stage
- Independent power supplies for input stage, driver stage & output stage
- Full power is rated all the way down to 2Hz for unrestricted low-end bass
- Harris hyper-fast soft-recovery bridge diode rectifiers
- REL & Nichicon Muse capacitors
- DC servo & relay protection circuits
- AC turn-on inrush surge protection with relay bypass
- Automatic turn-on by 12 V trigger or audio sensing
- 2 rack space chassis with rear carry handles
- Power Output
- 250 watts@8 Ω
- 450 watts@4 Ω
- 800 watts @2 Ω
- Power measurements are with 120 VAC: 0.15% THD, RMS continuous power, full audio band (20 Hz - 20 kHz)
- Class A Power Output
- 8 Watts, bias set to high
- 4 Watts, bias set to low
- Current Capacity
- 100 amps, peak
- Slew Rate
- > 130 volts per microsecond
- Frequency Response
- 2 Hz - 110 kHz, +0/-2 dB
- 20 Hz - 20 kHz, +0/-0.25 dB
- Total Harmonic Distortion (THD)
- < 0.15 % at full power
- < 0.02 % at typical listening levels
- IM Distortion
- < 0.03 %
- TIM
- Unmeasurable
- Input Impedance
- Unbalanced: 50 kΩ
- Balanced: 100 kΩ, (50 kΩ per leg)
- S/N Ratio, inputs shorted
- >120 dB, IHF A-weighted, bias set to Low
- >118 dB, IHF A-weighted, bias set to High
- >110 dB, Unweighted, bias set to Low
- >108 dB, Unweighted, bias set to High
- Total Gain
- 29 dB (Gain switch set to normal)
- 23 dB (Gain switch set to low)
- Input Sensitivity for 28.28 V into 8Ω
- Unbalanced: 1V
- Balanced: 1V per leg (Gain switch set to normal)
- DC Trigger Requirements
- +9 Vdc to +12 Vdc, 5 mA
- Audio Trigger Requirement
- 2.5 mV - 10 mV
- XLR Pin Identification
- 1 = Ground (Shield)
- 2 = Positive
- 3 = Negative (Return)
- Dimensions
- Width: 17.25" (437 mm)
- Height without feet: 3.5" (89 mm), 2U
- Height with feet: 4.125" (105 mm)
- Depth: 20" (508 mm)
- Depth with cables: 21.5" (546 mm)
- Net Weight
- 42 lbs (19.1 kg)
- Shipping Weight
- 50 lbs (22.6 kg)
- Power Requirement
- Standby:<1 Watt
- Idle (bias set to low): 125 Watts
- Idle (bias set to high): 240 Watts
- Typical Listening levels: 300 Watts
- Maximum: 800 Watts
What to expect in the box:
- JCM250 Monoblock Amplifier
- Rack mount hardware
Audiolab Stereo & Video Center
