CL-88 VACUUM
TUBE CONTROL AMPLIFIER
Simple
two-step amplification NF circuit was adopted. In control amplifier CL-88
circuit, the two-step amplification NF type circuit was adopted in an orthodox
way. The functional circuit such as tone control, balance volume, etc. was only
directly reflected in the simple circuit via no any other medium, and the
wiring method, the layout of components are directly reflected in the sound
quality and audio specifications. The switching of signal at the golden contact
relay sealed in nitrogen gas at the nearby of 4-system line input terminal
reflects the consideration about maintaining a high S/N (rate) because of
simple circuit. It is the same with power source part. The reason of the
adoption of small scale OI type transistor with good sealing feature and little
leakage flux lies in that Luxman knows quite well about how big the impact
exerted by S/N (rate) on vacuum tube amplifier is. For quickly supplying pure
energy, the regulator circuit is omitted.
High-precision
ultimate volume + touch mute Function.
One of the
important parts that could decide the sound quality of preamplifier is volume.
Luxman has not only dedicated to sound quality for a long time, but also to the
precision, operation feeling. And the ultimate volume with a high precision was
adopted in CL-88. For improving operation, the touch mute function is built in.
By touching the center of the volume knob, one could mute the sound at once.
llumination realized by blue-LED.
For
displaying the character of products and for helping owner enjoy a happiest
time of performance, below the volume, meter and chassis, the elegant and calm
illumination realized by the blue-LED was equipped.
llumination realized by blue-LED.
The special
vacuum tube phono amplifier EQ-88 could be connected.
In CL-88
specially designed for the special use of line level, the optional compact,
high quality special vacuum tube phono amplifier EQ-88 was prepared for analog
lovers. The power could be supplied just by one touch on the Noitorikku -made
connector installed on the rear of power source. ( The separate power unit only
for driving EQ-88 will be launched recently. Please consult business department
of our company for more detailed information.)
Chassis
construction completely pursuing rigidity
The
vibration and the resonance from the outside are the formidable enemy for
vacuum tube inside it the electrons collide each other in the vacuum glass
tube. For CL-88 on the basis of guaranteeing the rigid foundation by
adopting the 15mm super-thick aluminum stainless plate for top panel, the
constructions suitable for control amplifier and power amplifier are
extensively analyzed. The CL-88 has replaced construction from the original
box-type case body to the hanging mode with heavy thing installed in the
internal side of top panel. Between the chassis and the top panel, the rubber
cushion material was inserted, the framework construction for eliminating the
tiny vibration by batten with high rigidity was adopted. The
existing box-type part plays a role of beam in this construction, contributing
a lot for the strengthening of the horizontal intensity of the case body as a
whole. The Piezon composite insulator used at the foot parts of the two models
has taken the construction combining the advantages of hardware and software
systems by using the stainless brass combined with damping material
(piezoelectricity-type sound-proof and absorption material). It could give a
solid support to the amplifier case body as well as could eliminate the
vibration and resonance.
SPECIFICATIONS
CL-88
Input
Sensibility/Input Impedance: 100 mV / 90
kΩ
Output/Input
Impedance: 1 V / 1 kΩ
Overall
Higher Harmonic Distortion Rate: 0.013%
(1kHz rated)
Frequency
Characteristic; 5 Hz - 100 kHz (+0, -3
dB)
Signal-to-Noise
Ratio: less than 93 db (1kHz 1HF-A)
Input: 4 Coaxial systems
Output: 1 Coaxial system
Accessory
Device: Power switch, power indicator, input selector, volume, touch mute, mute
indicator,
line phase
sensor, signal ground contact, AC inlet
Vacuum Tube
Used: ECC83S / ECC82
Circuit
Format: 2-step amplification NF type
Sound
Quality Parts:
Gold plating
4N non-copper oxide single wire,
Tubular type
condenser immersed in vitamin Q oil,
Film type
block condenser,
Gold-plating
tight socket,
Nnitrogen
padding relay with gold contact,
High
precision ultimate volume,
Shock-proof
construction used in 15mm thick aluminum top panel
Power
Consumption: 12 W
Dimension (W
x H x D): 255 x 95 x 387 mm
Weight: 8.6Kg
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