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 K-112 tape deck

The K-112 is a three-head, double Dolby configuration that allows monitoring of the "just-recorded" signal, while the recording is belong made. This  cassette deck is specially designed with a superb "single-direction" transport to ensure professional-grade recording.
This 3-head stereo cassette deck utilizes the latest in refined technological features. Some are as follows:  Hard Hexalam permalloy 3-head system; two motors; Dolby HX-Pro; Dolby B and C; feather touch full logic transport controls; four digit electronic  tape counter with memory; fine Bias control; Luxman System remote control capability, and more.

Hard hexalam permalloy 3-Head full monitoring configuration
The hard anti-wear surface, plus the laminated hexalam low eddy current core, give high unsaturated recording levels coupled with low loss, long life performance. In addition, the Hexalam designm coupled with OFC windings inn the R/P head, result in linear current flow and uniform magnetic flux inn the gap for purest sonic quality. Of course, 3 head allow full tape monitoring capabilities.
Two Motor Drive System
Separate capstan and reel drive motors ensure lowest possible wow and flutter, particularly over the long term. Variations in cassette friction or reel drive irregularities, have no effect on the precision of capstan rotation.
Dolby HX-PRO
This headroom extension system, developed for professional applications, greatly increases high frequency headroom for wide range dynamics without saturation. Operating in the record mode only, it automatically reduces bias in the presence of high level high frequency program material, while simultaneously, and automatically, adjusting the E.Q. dynamically to provide precise even frequency response. High frequency distortion is thereby greatly reduced and is especially effective when using normal (Fe) and high bias ( Co, CrO₂) tapes.
Fine Bias Control
Allows precise adjustment of tape bias for optimization of frequency response. Such adjustment permits one to compensate for variations in tape formulations when using different tape brands or for production variations within the same brands. It is especially useful with the 3 head system.
4-Digit Electronic Counter with Memory
While functioning in the same manner as a mechanical counter, this electronic counter offers more precision while completely eliminating the drive and wear problems of mechanical counters.
Low velocity Tape Head Engagement System
This motor driven cam engagement mechanis, smoothly pulls up the head assembly at low velocity to engage the tape cassette. This eliminates the hard jar and slap of solenoid systems, thus preventing the loosening or distortion of precision head alignments.
Feather Touch Full Logic Transport Controls
Transport control push-buttons, requiring only a light press, activate the computer controlled logic system for instant response of the transport to operator commands.
System Remote Control Capability
When used with Luxman's system remote control centers or receivers, such as the U-100, F-105, R-115, R-117, etc., the K-112 can be operated romotely, along with other Luxman components in the system, with one unified hand held remote controller.

System:  4-tracks, 2-channel stereo
Heads:  3 - Combination, Discrete Section Record/Playback head, plus one Erase head
1 x FG Servo, Capstan Drive
1 x DC Motor, Reel Drive
Tape Speed:  4,8 cm/sec ±1%
FR/FF time :  90 sec. (C-60)
Wow and Flutter (WRMS):  0,05%
Frequency Response:
Metal Tape :  20 Hz - 21 kHz ( ±3 dB)
CrO₂ Tape :  20 Hz - 20 kHz (±3 dB)
Normal Tape :  20 Hz - 19 kHz (±3 dB)
Signal-to-Noise Ratio (3% Distortion, 400 Hz)
Metal Tape with Dolby C :  73 dB
Metal Tape with Dolby B :  65 dB
Metal Tape without Dolny NR :  56 dB
CrO₂ Tape with Dolby C :  72 dB
CrO₂ Tape with Dolby B :  64 dB
CrO₂ Tape without Dolny NR :  55 dB
Total Harmonic Distortion:  0,3% (3rd Harmonic ,CrO₂ position, 400 Hz, 0 dB)
Input Sensitivity/Impedance:
Line :  90 mV/ 47 k Ω
Output Level/Impedance:
Line :  500 mV/ 2,0 k Ω
Headphone :  100 mV (1,25 mW)/ 8 Ω
Noise Reduction System:  Dolby B, C, HX-PRO
Power Source:  100 - 120 V / 220 - 240 V 50/60 Hz
Power Consumption :  22 W (120 V/60 Hz USA models)
Dimensions (W x H x D):  438 x 110 x 319 mm (17-5/16" x 4-5/16" x 12-5/8")
Weight:  4,3 kg (9,5 lbs)

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