Using trickle down technology from the award-winning C-1000f control amplifier, the C-800f is a fully balanced design. Three single-ended and three balanced inputs. Two single-ended and two balanced outputs. Phase switch on the front panel. Has Luxman’s latest compact version of the LECUA 1000-WM volume control (Luxman Electric Controlled Ultimate Attenuator with Weighting Matrix Technology), as well as the electronic input selector. Luxman’s most advanced ODNF circuit is employed—release 2.4. as featured in the C-1000f—and delivers state-of-the art musical performance.

Simple circuit configuration

LECUA 1000WM unifies the amplifier, volume control functions and power supply in a three-dimensional module, resulting in a circuit that is electrically very simple. Long-term reliability is excellent, with performance and sound quality that will remain unchanged also after prolonged use.

LECUA 1000WM uses analog processing

The LECUA 1000WM circuit converts the music signal from a voltage into a current, switches gain by means of switching on the attenuates, and then reconverts the current into a voltage. The entire process is carried out in the analog domain.

Same ergonomic feel as a conventional high-quality volume control

The counter balanced volume control knob position is detected by a dedicated CPU which in turn selects the current switches for LECUA 1000WM operation. Operating the knob therefore feels exactly the same as with a conventional control, and operation via the remote control is also possible.

Mute and Balance control are also implemented by LECUA 1000WM

The functions of the attenuator and the left/right balance control are covered by the LECUA 1000WM circuit as well, eliminating the need for additional circuit stages. Keeping the configuration simple helps to maintain high performance and sonic purity.

LECUA 1000WM is a radically different volume control principle that eliminates all variable resistors from the signal path and provides top-notch performance and sound quality. Because the music signal is not affected by changes in impedance, high signal-to-noise ratio and low distortion are maintained at any volume control setting.

LECUA 1000WM ensures high S/N ratio and uniform frequency response

Unlike conventional volume controls, LECUA 1000WM does not introduce a change in impedance at any volume setting. Consequently, there is no deterioration of S/N ratio and frequency response remains totally uniform. The benefits are especially apparent at settings that correspond to normal listening levels, because the sound remains perfectly transparent and the tonal quality is not altered in any way.

No more left/right tracking differences or crosstalk

Because LECUA 1000WM is an electronic circuit employing fixed-value resistors, there is virtually no left/right tracking error also at low volume levels. Since channels can be kept separate, crosstalk also does not present a problem.

There are four channels of amplification / attenuation on board. One can choose between two individual pairs of single-ended outputs, which can then be set to different output levels, such as in a bi-amplified system or use all four channels for the fully differentially balanced outputs.

Utilizes 100 millimicron thick gold-plated peel coat PCB which reduces resistance to a minimum in all audio circuits.

The delicate music of the low-level signal is protected from unnecessary vibration and degradation, by the installation of cast iron pillars for supporting the chassis.

Has a robust amplifier section capable of driving any amplifier, uses 6,600μF of capacitance. Up to 11 volts are available per channel in balanced mode.

The balance between the right and left channels can be adjusted from the remote control.

In single ended mode; two pairs of outputs are available, which can be adjusted individually from each other. For example, a 6 dB difference between both outputs can be set to allow for the different gain structure of two different amplifiers in a bi-amping situation.

Custom parts, such as resistors and condensers are used extensively throughout this design. Kappa alloy RCA sockets are used because of their high conductance and low resistance. Non-magnetic, gold-plated AC inlet.

The flourescent display shows the different modes as well as source selection and the volume setting, is crisp and easy to read. It may also be dimmed from the remote control.

RJ11 connectors are used for the remote 12V DC trigger to power up or down the attached amplifiers.

Custom AC Inlet

In order for an amplifier to multiply the signal cleanly, it first needs to receive clean electrical power. Luxman view the AC input with great concern, just as serious listening tests are applied to the power cables, so too is the AC inlet built to rigorous standards. With the C-800f, the AC inlet starts with high purity brass which subsequently receives a non-magnetic nickel plating and finally gold-plating is administered in order to maintain a low resistance.

Line Phase Sensor

Here is a clever device found on the back of every Luxman powered product. You press the button and it will check the phase of the electricity it is receiving. If the AC outlet in the wall is incorrectly wired, meaning the live and neutral are swapped, a red LED will turn on to warn you. You only need to press it once, when you are installing a product to check that everything is in order. It’s a simple mistake, that occurs often, and one that can seriously undermine your listening enjoyment.

Power Cord supplied is the JPA-15000, first introduced with the M-800A.

Item Value
Input sensitivity / Input impedance unbalance / 300mV / 47.5kΩ,
balance / 300mV / 95.0kΩ
Output / Output impedance unbalance / rating 1V / 564Ω Maximum 5.5V,
balance / rating 1V / 1128Ω Maximum 11V,
Total harmonic distortion rate unbalance / 0.009% (20Hz-20kHz),
balance / 0.005% (20Hz-20kHz),
Frequency response 5Hz-20kHz (+0, -0.1dB),
1Hz-117kHz (+0, -3.0dB)
S/N ratio unbalance / 123dB (IHF-A),
balance / 126dB (IHF-A)
Power consumption 24W (Electrical Appliance and Material Safety Law),
2.3W (at standby)
Outside dimensions 440 (W) x 117 (H) x 427 (D) mm
Weight 17.6kg

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Awards

AEX_Award_Logo_2007

On-gen Publishing – Silver Prize, Audio Excellence Award 2007
mj

MJ – Technology of the Year
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Stereo Sound – Grand Prix 2007

Luxman is pleased to announce the receipt of a 2007 GRAND PRIX award from Stereo Sound in Japan for the C-800f Control Amplifier—quite possibly the most prestigious award in high end audio today.

Other Awards for the C-800f

  • Audio Accessory (Japan) – Silver
  • Stereo (Japan) – Special Commendation (Feb. 2008)