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VTL
MB-450 Signature - Series II
SOLD $17,500.00 / PAIR
NOV
2010
How Much Power Do I Need?
Manufacturer's Website
Dr Hi-Fi's Review
Beautiful designed and outstanding performance -
VTL MB-450 Signature Series II Monoblocks!
'Protection' - The reason whey
these sell as fast as VTL can make them.
I had to wait 6 weeks for mine to
be made.
You will fall in love with these
masterpieces and what makes them unique.
Auto Bias / Fault Protection on
all Output Tubes via easy to see LED Indicators.
"Comprehensive fault sensing
monitors the status of the output tubes, and alerts the user to any
adverse conditions. In the case of a problem in any of the output tubes,
the amplifier will immediately shut down. The tube fault is indicated on
the front panel, as well as by a blinking LED on the top deck next to
the tube that caused the fault shutdown, making diagnosis and tube
replacement easy.
The logic-controlled automatic bias system is designed to keep the tubes
at peak performance and operates completely outside of the signal path.
The tube biasing circuit checks and adjusts the tube bias values
automatically during the power-on sequence, as well as when the
amplifier is at idle (i.e. when no music signal is being amplified.),
and drops out of the circuit path when music signal is detected."
New innovative removable side panels for easy
vacuum tube access rather than having to remove the entire top cover of
the amplifier.
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20 Amp
Power Inlet Socket
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Full
Fuse Protection On All Circuits
-
Fuses
for Main, Logic, Input, Plate & Screen
Circuits
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VTL's
Super Balanced & Single Ended Inputs
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12V
Trigger for Mute, Mode and Power Functions
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Suer
Heavy Speaker Binding Posts
Massive Power Supply Capacitors and VTL's Signature
Transformers.
"When the amplifier
is in Mute Mode, the output tubes are drawn down to a very
low trickle current with noticeably lower heat output to
conserve tube life."
MB-450 Series II Signature
Monoblock Data Specification
| Vacuum Tube Complement |
8 x 6550C, 1 x 12AT7,
1x 12BH7 |
Output Power
20 Hz – 20 kHz into 5 ohm load |
Tetrode = 425W
Triode = 225W |
THD 20Hz - 20kHz @ 450W
Tetrode
THD 20Hz - 20kHz @ 200W Triode
|
<2.5%
|
| Input Sensitivity @
450W Tetrode |
2.0V |
| Input Impedance |
42K Ohms |
| Optimum Load Range |
4 - 8 Ohms |
S/N Ratio @ 450W
Tetrode
S/N Ratio @ 200W Triode |
-110dB, 120Hz |
| Power Consumption |
Idle = 300W
Full Power =1000W |
| Primary Main Fuse
Rating |
110/120V = 15A Ceramic
Slo Blo
220/240V = 8A Ceramic Slo Blo |
| Input Fuse |
110/120V = 1A Ceramic
Slo Blo
220/240V = 1A Ceramic Slo Blo |
| Logic Fuse |
110/120V = 1A Ceramic
Slo Blo
220/240V = 1A Ceramic Slo Blo |
| B+ Fuse Rating |
Plate Fuse - 2.5A Fast
Acting 600V
Screen Fuse - 0.75A Fast Acting 600V |
| Dimensions |
W = 18.5 Inches (47 cm)
H = 9 Inches (23 cm)
D = 18 Inches (46 cm) |
| Weight |
93 lbs (42 Kg) unpacked
110 lbs (50 Kg) packed |
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