Vintage NC 5250

Features

• THX Ultra2 certified
• 250 watts rms per channel into 8Ω, all channels driven
• 385 watts rms per channel into 4Ω, all channels driven
• 45 amps peak current per channel
• Fully discrete circuitry with two toroid transformers
• Efficient, low heat design
• DC Servo and relay protection circuits
• Automatic on/off by DC trigger with looping output
• Automatic on/off by audio signal with adjustable sensitivity
• Gold-plated RCA input jacks
• Heavy duty 24k gold-plated 5-way speaker terminals
• Ground lift switch
• Standby, channel status, high temperature indicators
• 4u chassis with carry handles; RMK44 rack mount kit available
• (W x D x H): 17.25” x 18.5” x 7.63” / 7” without feet

Specifications

Continuous RMS Power Output
20 Hz - 20 kHz, Five Channels Driven
250 watts x 5, 8 Ω
385 watts x 5, 4 Ω
Current Capacity
45 amps peak per channel
Frequency Response
20 Hz - 50 kHz, +0/-3 dB, 1 watt
Dynamic Headroom
1.6 dB
Total Harmonic Distortion
0.025% at full rated output
0.02% at average listening levels
IM Distortion
0.05 %
Transient IM Distortion
Not measurable
S/N Ratio
114 dB at rated output, IHF A-weighted
106 dB at rated output, unweighted
93 dB at 2.828 V output, IHF A-weighted
84 dB at 2.828 V output, unweighted
Input Impedance
33 k Ω
Input Sensitivity
1 V in for 28.28 V out, THX standard
1.6 V for full rated output
Inter-Channel Crosstalk
85 dB, 1 kHz
73 dB, 10 kHz
67 dB, 20 kHz
Damping Factor
Over 150 at 20 Hz
Auto Turn On - DC
9 - 12V, 15 mA
Auto Turn On - Audio
1.2 mV - 12 V, adjustable
15 minute turn off delay
AC Power Requirement
110 - 120 V / 220 -240 V, 50 - 60 Hz
3 watts standby; 2500 watts full output
Dimensions
17-1/4" Wide
18-1/2" Deep with connectors
7-5/8" High with feet, 7" panel only
437 x 470 x 193mm, 176mm panel only
Net Weight
69 lbs., 31.4 kg
Rack Mount Accessory
May be Purchased Separately
RMK44