Parasound® ZoneMaster™ Universal 2 Channel 4 Speaker & Sub Amplifier

Model #: ZoneMaster 250

• Universal amplifier for applications from 50 to 200 watts
• 4 speaker connections (A and B outputs for both channels)
• High current for stable operation at 2 Ohms
• Channel pairs are bridgeable for up to 200 watts @ 4 Ohms
• Class AB input stage plus premium Class D power stage
• One Independent audio sensing trigger
• One Independent 12 volt trigger input
• Looping 12 volt trigger output for one zone
• Speaker level input for expanding systems w/out pre out jacks
• One bus input can be routed to any zone
• Looping output to connect additional amplifiers
• Mono mode combines L and R for single speaker applications
• Separate level controls for both channels
• Detachable speaker connectors accept up to 12 gauge wire
• Short circuit and overheat protection with front panel indicators
• 0.5 watt standby power consumption meets Energy Star & EU specs
• Compact 1u, 1/2 width chassis size
• Full Range Mono RCA Output
• 80Hz low pass Mono RCA output (for sub)
• Built in 80Hz low pass filter in bridged mode for driving in-wall/in-ceiling woofers or passive sub(s)

Power Output: RMS, All Channels Driven (20 Hz - 20 kHz)

• 50 watts x 2 @ 8O
• 90 watts x 2 @ 4O or 2O
• 160 watts x 1 @ 8O (Bridged)
• 200 watts x 1 @ 4O (Bridged)

Frequency Response

• 10 Hz - 60 kHz, +0/-3 dB

Total Harmonic Distortion

• < 0.05% at typical listening levels
• < 1.0% at full power

Interchannel Crosstalk

• 70 dB at 20 kHz

Input Sensitivity

• 700mv = Full output (50 Watts @ 8 O)
• Total Gain = 29 dB (Level controls set to Maximum)

S/N Ratio

• > 112 dB, input shorted, IHF A-weighted

DC Trigger Requirements

• +9 Vdc to +12 Vdc, 2 mA

Audio Trigger Requirements

• 2 mV Audio Signal

Audio Trigger Requirements

• 2 mV Audio Signal

AC Power Requirement

• 250 Watts Maximum
• 15 Watts Typical
• 7.5 Watts Idle
• 0.5 Watts Standby
• 110-130 VAC 60 Hz or 220-255 VAC 50 Hz
• Note: AC mains voltage is set only by qualified electronics technician.

Dimension

• Height without feet: 1.75”

Useful Documents