LUXMAN C-12

Commentary

DC control amplifier with thin design.

All amplifier circuits are DC-converted into a DC amplifier configuration.
The equalizer amplifier section uses a DML-IC that blocks a differential amplifier circuit with an FET at the first stage, a cascode circuit, a current mirror circuit and a constant-current circuit to assist the differential amplifier circuit, and a cascode circuit with a constant-current circuit and an output circuit using SEPP of class A amplification.
The flat amplifier section consists of a DC amplifier that combines the same DML-IC as the equalizer amplifier with an emitter follower output circuit with a constant current circuit.

By adopting a unique DML-IC, the generation of DC drift due to the change of external conditions such as temperature is coped with.

The chassis layout considered from all angles is adopted, and the input circuit is wired in the shortest path with almost no shielding of signal path.
In addition, all the basic amplifier circuits, such as the equalizer and flat amplifier, are placed on a one my-board, and the left and right channels are completely separated. As a result, excellent frequency characteristics, S/N ratio, stability, and crosstalk characteristics are achieved.

Although the volume is a continuously variable type, it is extremely precise. There is almost no linkage error between the left and right channels, and a new volume with improved sound quality is adopted.
In addition, various parts such as resistors, semi-fixed resistors, capacitors, and so on have been well considered.

Equipped with a twin T-type filter to effectively remove ultra-low frequency noise.
This filter is composed of capacitors and resistors without any active elements, and effectively filters out only very low frequency noise from 5 hz to 10 hz.

Equipped with a linear equalizer, you can adjust the recording characteristics of program sources such as disks and tapes.

Equipped with an attenuator that can be preset in the range from -15dB to -40dB.

It is equipped with functions such as a two line tape monitor circuit and a tape dubbing circuit.

Model Rating

Type	Control amplifier
Output voltage	Pre out Rating : 1 v Maximum : 18 v (0.005% strain rate)
Output impedance	Pre out : 100 Ω
Total harmonic distortion factor	Phono1/2 : 0.005% or less (Rec out, 2 v, 20 Hz to 20 kHz) Tuner, Aux1/2 : 0.005% or less (Pre-out, 2 v, 20 hz to 20 khz)
Frequency characteristic	Phono1/2 : 20 Hz to 20 kHz ± 0.2 dB Tuner, Aux1/2 : 1 Hz to 200 kHz -0.5 dB
Input Sensitivity (Pre out, 1 v)	Phono1/2:2.3mV Tuner, Aux1/2 : 150 mv
Input impedance	Phono1 : 30k ~ 100k Ω Phono2 : 50k Ω Tuner, Aux1/2 : 50k Ω
SN ratio (IHF-A correction, input short)	Phono1/2 : 83 dB or more Tuner, Aux1/2 : 100 dB or more
Input conversion noise (IHF-A correction, input short)	Phono1/2:-135dB/V Tuner, Aux1/2 : -117dB/V
Separation	Phono1/2 : 85 dB or more (1 kHz) Tuner, Aux1/2 : 95 dB or more (1 kHz)
Attachment	Linear equalizer Subsonic filter Input impedance adjustment (for Phono1) Tape monitor circuit (2 systems) Tape dubbing circuit Recording output switch Attenuator (can be preset)
AC outlet	Switched : 2 lines Unswitched : 1 line
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	15W (Electrical Appliance and Material Control Law)
External dimensions	Width 438x Height 78x Depth 363 mm
Weight	6.5kg