ALLNIC AUDIO L-4000 Owner's Manual - Page 8
Browse online or download pdf Owner's Manual for Amplifier ALLNIC AUDIO L-4000. ALLNIC AUDIO L-4000 12 pages. Line stage preamplifier
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From this point on, operation is straight-forward. All
functions are controlled from the front panel or the remote
control. Of course, BE CAREFUL about differences in gain
between your sources. Generally, disc players and tuners
will have greater gain than phono stages. That means the
volume setting for listening to your turntable might be too
high for listening to CD's.
When you are finished listening, turn off your stereo power
amplifier or mono-block amplifiers. Then turn off the L-
4000, using the remote control or depressing the power
switch on the front panel. The power switch on the rear
panel should stay in the "on" position – this will keep key
circuitry warm, and your L-4000 will be ready to play when
the soft-start turns on the L-4000 next time you want to
listen. Turn off your sources last.
THE CURRENT METER
These illuminated meters indicate the current supply to the
gain tubes in the L-4000. They are indicators of failure or
damage to the function of the unit. There is one meter for
each channel. The needle should be between the two
parallel lines just left of centre on the meter face. Any
failure of the tubes or circuits in one or the other of the L-
4000's channels is indicated by the needle on the meter for
the respective channel moving out from between these two
parallel lines.
If the needle has moved to the left of the parallel
lines on a meter, it means that one or both the
E810F tubes for that channel is failing.
If the needle on either meter moves to the right of
the parallel lines, it means that one or the other of
the voltage regulator tubes (7233 or 6485) for that
channel is failing.
In the case of any failure indicated by the meter, please
contact Hammertone Audio for assistance.
TUBES
The L-4000 uses the following tubes (see Figure 6):
Two (2) x E810F
Two (2) x 7233
Two (2) x 6485
All consequences of changing or attempting to change
tubes are borne by the user unless by express agreement
between the owner and Hammertone Audio. Allnic Audio
and Hammertone Audio are not liable in any way
whatsoever for any injury or loss incurred by the user or
for damage to the L-4000, any of its parts, or tubes or
replacement tubes resulting from the user changing or
attempting to change tubes.
SPECIFICATIONS
FOR THE ALLNIC AUDIO L-4000 LINE STAGE
PREAMPLIFIER
Inputs:
Outputs:
Input Impedance:
Frequency Range:
Voltage Gain:
THD (1kHz):
S/N Ratio:
Maximum Output:
Output Impedance:
Power
Consumption: 30W at 110/120V / 60 Hz
8
Line level × 5 pairs
(Balanced × 2, Un-
balanced (RCA) × 3)
Balanced × 1 pair
Unbalanced × 1 pair
Unbalanced 10kΩ
Balanced 20kΩ
20Hz ~ 20kHz (FLAT)
16Hz ~ 75kHz (-3dB)
+20dB
Output 0.3V, 0.06%
Output 1.0V, 0.15%
-90dB (CCIR, 1kHz)
15V RMS (Non-clipping)
150Ω Constant