What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Luxman L-3

 Luxma L-3 is a solid state stereo integrated amplifier. The L-3 was so designed as to offer diverisfied facilities, while retaing the slim, precision-look common to our prestigeous line of "laboratory Reference Sries" and "Laboratory Standard Series"

Totally direct-coupled amplifier circuitry at the power amp section with dual rail power supply offers a high damping factor at the ultra bass range to ensure efficient driving of loudspeakers. To reduce the crossover distortion down to the minimum level, a through complementary configuration is employed at the output stage by means of PNP and NPN transistors, while the driver transistors have extremely good heat-dissipation to ensure high dependability. Transistors having high cut-off frequency are used in the driver stage to help reduce distortion in the treble range.
 Specialy selected low noise transistors and resistors in conjunction with low leakage type electrolytic capacitors realize good S/N ratio.

The 2-stage equalizer amps using PNP and NPN transistors not only offer outstanding linearity but handle sufficiently high input voltage (150 mV, 1khz, RMS)

LUX's well-known NF type tone controls are provided independently for both right and left channels and make it possible to tailor reproduced sound according to your own state. At the center-click point a true flat frequency response is obtained. A high-cut filter is provided to remove unpleasant tape hiss, disc scratchnoise etc., while subsonic filter is useful to get rid of all the bad effects of turntable rumble and infrasonic disc noise.. A loudness control is employed for proper compensation at low level of listening. 2 pairs of tape monitor circuits permit dubbing from one tape to another.
The speaker selector allows you to drive either A and B speakers separately or both of them simultaneously.
 Styling of L-3
A truly high quality precision image was achieved in this audio component thanks to its meticulous finish of totally metallic structure. Aluminium extruded front panel provides an optimum match with the elegant case and precision metalic knobs. The exhaustive study of human engineering is reflected in the placement of the various knobs and controls for easiest and most logical operation.


Additional Features
Dual Tape Monitor and dual Tape Dubbing.
Loudnes Control and Mode Selector.
Speaker Selector (A, B, A+B, OFF)
Extra AC Outlets (Switched, Unswitched)
DIN Connector (E Type, S Type only)

Specifications
Power Output:  42W/42W (8 Ω , both channels driven)
Total Harmonic Distortion:  no more than 0,03% (8 Ω , both channels driven)
Rated I.M.:  no more than 0,05% (8 Ω, 42W/ch, 60 Hz : 7 kHz =4 :1)
Frequency Response:  15 Hz - 60 kHz (within -1 dB)
Input Sensitivity/Impedance:
Phono : 2,5 mV/50 k Ω
Tuner : 145 mV/50 k Ω
Aux : 145 mV/50 k Ω
Monitor 1, 2 : 145 mV/50 k Ω
Signal-to-Noise Ratio (Input short-circuited):
Phono : better than 84 dB (IHF-A weighted, 10 mV)
Tuner : better than 90 dB (IHF-A weighted)
Aux : better than 90 dB (IHF-A weighted)
Monitor 1, 2 : better than 90 dB (IHF-A weighted)
Residual Noise: no more than 1 mV
Tone Control:  Lux NF type (100 Hz ±11 dB, 10 kHz ±10 dB)
Filter:
High Cut : 7 kHz (-6dB/oct.)
Subsonic : 25 kHz (-6dB/oct.)
Channel Separation:
Phono : better than 60 dB
Aux : better than 70 dB
Power Supply: 110 - 120 V, 220 -240 V 50/60 Hz
Dimensions (W x H xD):  438 x 105 x 289 mm (17¼" x 4" x 11")
Weight:  8 kg (17,6 lbs) net

Nessun commento:

Posta un commento