Specifications - VTL MB-450 Series III Owner's Manual

Specifications

MB-450 Series III Signature Monoblock power amplifier
Vacuum Tube Complement
Output Power
20 Hz – 20kHz, into 5 ohm load
T.H.D. 20 Hz – 20 kHz @ 450W Tetrode
T.H.D. 20 Hz – 20 kHz @ 200W Triode
Input Sensitivity @ 450 W Tetrode
Input Impedance
Optimum Load Range
S/N Ratio @ 450 W Tetrode
S/N Ratio @ 200 W Triode
Power Consumption
Primary Mains Fuse Rating
Input Fuse
Logic Fuse
B+ Fuse Rating
Dimensions
Weight
MB-450 Series III Signature Monoblock Owner's Manual
8 x 6550C, 1 x 12AT7, 1 x 12BH7
Tetrode = 425 watts
Triode = 225 Watts
< 2.5%
< 2.5%
2.0 V
42K Ohms
4 - 8 ohms
-110dB, 120 Hz
Idle = 300 W
Full Power = 1000 W
100/120V = 15A Ceramic Slo Blo
220/ 240V = 7A Ceramic Slo Blo
100/120V = 1A Ceramic Slo Blo
220/240V = 0.75A Ceramic Slo Blo
100/120V = 1A Ceramic Slo Blo
220/240V = 0.75A Ceramic Slo Blo
Plate Fuse -- 2.5A fast acting 600V
Screen Fuse – 0.75 fast acting 600V
W = 18.5 inches (48cm), D = 18 inches
(26cm), H =9 inches (23 cm)
93 lbs (42Kg) per monoblock unpacked
110 lbs (50 Kg) packed
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