Tuesday, October 8, 2019

Silbatone L-107 MK2 preamp

Introducing the new Silbatone L-107 MK2 line preamp.

A natural evolution over the MK1 with higher quality half-silver input and output transformers, and the additional of an ultra high quality remotely operated volume control.

Rogoz Audio Finale/BBS anti-vibration platform


Thursday, October 3, 2019

Luxman CL-1000


Luxman’s new flagship control amplifier, the CL-1000 is the spiritual heir to the legendary C-1000, launched in 1975. Yet even as it salutes the past, the new preamp looks forward with an all-new LECUTA volume control system, a nanocrystal core transformer, Luxman’s proprietary oil-impregnated capacitors and more.

The heart of any preamplifier is the volume control. If not executed properly, it can cause left/right channel imbalances and introduce subtle but tangible distortions at low volume. For this reason, Luxman created the highly regarded LECUA attenuator system. The CL-1000 refines that concept with LECUTA, the Luxman Electronically Controlled Ultimate Transformer Attenuator.

The Volume knob is a 34-step rotary switch that triggers 34 relays, located completely outside the signal path. In turn, the relays activate 34 taps on matching left and right transformers. These transformer taps set the volume in carefully calibrated steps. Because transformer cores can influence sound quality, Luxman engineers selected FineMet® core material from Hitachi Metals, Ltd. This has a unique nanocrystal structure for high saturation flux density, high relative permeability and low core loss. As a result, the CL-1000 delivers uncompromising sound, even at low volume.

Circuit Design

While some are rediscovering the magic of vacuum tubes, Luxman has been making tube audio components without interruption since the company’s earliest days. The CL-1000 embodies this expertise, complete with refinements to take vacuum tube audio a major step forward.

Super Permalloy input transformer. Because transformers can have a profound impact on vacuum tube audio quality. Luxman chose an input transformer with a high-permeability Super Permalloy core.

Six JJ Electronic E88CC dual triodes. The CL-1000 uses two-stage PK NF amplification, with both the attenuator driver and the output stage built with vacuum tubes from JJ Electronic. Luxman selected E88CC dual triodes for superb reliability, low noise, attractive dynamics and a densely detailed midrange.

Custom capacitors. Luxman couples the two stages with the company’s own, oil-impregnated capacitors. Originally developed for the MQ-300 amplifier, these help deliver satisfying music reproduction with superb current handling.

Left/right Super Permalloy output transformers. The output stage features the sonic benefits of Super Permalloy cores in independent left and right transformers.

Articulator function. Luxman’s deep experience with signal path transformers has revealed one downside: residual magnetic fields in the cores. For this reason, the CL-1000 oscillates and demagnetizes the transformer cores every time the owner turns on the power. For an even higher degree of sonic purity, users can perform manual demagnetization with the Articulator switch.

Versatile MM/MC phono preamp. The CL-1000 accommodates both Moving Magnet and Moving Coil cartridges with an audiophile-grade phono preamplifier. Six-position switches on the rear panel enable users to optimize impedance and capacitance.

Robust, stable power supply. To deliver the most demanding musical peaks without effort or strain, the CL-1000 power supply features large, independent left and right transformers and high-grade filter capacitors.

Robust Chassis

External vibration is the enemy of vacuum tube audio reproduction. Under the surface, the CL-1000 chassis takes advantage of a comprehensive engineering program to fight even subtle distortions caused by air-borne or shelf-borne vibration.

Triple-layer aluminum front panel. Reminiscent of Luxman’s classic C-1000, the front panel uses precision machining to unite three thick layers into one massive, anti-resonant assembly.
Natural walnut cabinet with rosewood gloss finish. Additional protection from resonance comes from the elegant cabinet, which is covered in walnut.

Cast iron isolator feet. Massive iron feet feature a density gradient to block and diffuse shelf-borne vibration.

Rigid box chassis. The chassis itself forms an anti-resonant container with internal partitions helping to reduce vibration further.

Internal rubber dampers. For added protection, Luxman isolated the circuit boards from the main chassis with special rubber dampers.

Alloy input and output terminals. The RCA input and output jacks consist of an alloy that combines the conductivity of copper with the durability of brass.

Gold-plated AC input. The AC input contacts are treated with non-magnetic nickel and plated with gold.

Monday, September 30, 2019

Saturday, September 21, 2019

Thursday, September 19, 2019

Monday, September 16, 2019

Acora Acoustics SRC-2


Technology & Craftsmanship

We pay attention to the details.

​The Speaker Cabinet is one of the most overlooked, and least evolved component of the electromagnetic loudspeaker since the first successful speaker in the early 1920’s.

Combining engineering and design, we set about creating a new cabinet with the following criteria in mind.

The Ideal cabinet must:

Hold the speaker driver(s) and  fully stationary position on all planes.

Prevent the interaction of sound waves from the back and front of the speaker drivers

Produce no sound of its own. This includes cabinet vibrations and resonance.

Provide damping and tuning to the speaker system.

Provide the above functions and be inert to temperature and humidity changes.

Compliment any decor with a timeless design.

Granite is the highest density, toughest, and highest compressible strength material available. Due to its structure, it’s even tougher than diamond (albeit slightly less than diamond in sheer hardness). It is also much harder and has a far higher compressible strength than aluminum or even titanium.

The result is a cabinet that does not resonate in the frequencies it is designed to contain, holds the driver in an absolute fixed position, and does not allow for energy transfer or absorption.  Its mass makes it very stable. Our designs have a low center of gravity and spikes to further increase physical and sonic stability.

As a result, we don’t need to use internal bracing so that reflection of the sound wave back through the driver is greatly reduced with the least amount of turbulence in the cabinet. Non parallel wall enclosures are also employed in a sloped time aligned baffle array. This design moves the back wave away from the driver in an efficient manner. Carefully placed damping material is also employed only as needed.

2 Way Bass Reflex

2 x 7” Sandwich Paper Cone

1” Beryllium Dome Tweeter

4 ohm

10w - 250w

92.5 1w/1m

29Hz - 30KHz

High Polish Black Granite 3cm

35,5 x 46 x 109 cm

110 kg each

Tuesday, September 10, 2019

Saturday, September 7, 2019

Endow Audio FS301


Product Features:

Point Array technology (patent pending)
Passive Signal Processor (PSP) technology (patent pending)
Baffle available in either piano black or walnut
Genuine leather cabinet
Outboard passive crossover

Point Array Technology:

Array of full range drivers that emulate a point source.

New level of transparency and imaging for state-of-the-art speaker technology

Innovative technology assures no crossover in critical frequency range of 200 Hz to 5,000 Hz. Enabled by patent pending Active Loading technology:

Active Loading technology is superior to conventional sealed and vented loading methods. A single 8” driver actively loads the multiple radiating drivers so that they are well behaved near their resonant frequency range, allowing them to play down to 100 Hz.

Crossovers inherently impede imaging and transparency since different driver types reproduce different frequencies. This phenomenon is particularly noticeable when a note’s fundamental frequency is played by one driver type below the crossover, and that same note’s harmonics are played by a different driver type above the crossover. When the harmonics change, the character of the note changes. Active Loading enables a very low crossover which is below the critical listening frequency range.

Groundbreaking sonic wave technology emulates a mathematically perfect point source.

Through patent-pending technology:

Drivers arranged tightly in a hemisphere create a point source sonic wave.
Middle drivers are reversed to mitigate non-linear cone movement distortion and control dispersion. Voltage magnitude and timing are uniquely controlled as a function of frequency for each driver position to enhance the sonic wave.

Passive Signal Processor Technology (PSP):

Performs the electrical control functions of both the subwoofer and the full range array  utilizing only capacitors, inductors, and resistors.

Enabled by patent pending technology to control the voltage signal to the full range drivers. The PSP offers superior sonics relative to digital solutions.

Product Specs:

Nominal power handling: 300 Watts
Nominal impedance: 8 Ohms
Peak output at 1 meter: 100 decibels
Woofer crossover: 100 hertz
Total cabinet weight: 90 pounds

Thursday, September 5, 2019

Wednesday, September 4, 2019