Description: Downward dual-ported bass-reflex, conical two-way standmount loudspeaker with horn-loaded tweeter. Driver complement: 1" neodymium compression tweeter driver with 6"-thick, solid wood conical horn and phase plug cast from a "3D printed sand mold in solid bronze"; 8" paper-cone woofer with neodymium magnet. Internal wiring is silver. Sensitivity: 94dB/W/m. Impedance: 8 ohms, nominal. Recommended amplifier power: 10W or more.
Dimensions: 24" (610mm) H × 18" (460mm) W × 10" (254mm) D; with stands, 48" H. Weight: 36lb without stand.
Finishes:…
search
Sidebar 1: Specifications
Sidebar 2: Associated Equipment
Analog sources: Kuzma Stabi R turntable with 4Point tonearm and EMT TDS 15N moving coil cartridge.
Preamplification: JE Sugden Masterclass LA-4, Shindo Allegro.
Power amplifiers: LKV Research Veros PWR+, Shindo Haut Brion.
Loudspeakers: DeVore Fidelity O/96, Klipsch Forte IV.
Cables: Interconnect: Analysis Plus Silver Apex, Shindo (RCA). Speaker: Analysis Plus Silver Apex.
Accessories: IsoTek EVO3 Aquarius line conditioner, Pro-Ject VC-S2 ALU Record Cleaning Machine, Audiodesksysteme Gläss Vinyl Cleaner Pro, Salamander five-tier rack;…
Sidebar 3: Measurements
I measured the OMA Fleetwood DeVille SQ's farfield and nearfield behavior with the DRA Labs MLSSA system, using calibrated DPA 4006 and Earthworks QTC-40 microphones and an Earthworks microphone preamplifier. I used Dayton Audio's DATS V2 system to examine the loudspeaker's impedance magnitude and electrical phase.
OMA specifies the Fleetwood DeVille's sensitivity as 94dB/W/m. My B-weighted estimate was lower, at 89dB(B)/2.83V/m, However, the DeVille's impedance, specified as a nominal 8 ohms, averages closer to 15 ohms (fig.1, solid trace). A voltage of 2…
As I started to write this review, the news broke that Sound United, the owner of Boston Acoustics, Bowers & Wilkins, Classé, Definitive Technology, Denon, Marantz, and Polk, was going to be purchased by a corporation that makes medical instruments. Such consolidation is not new. China- and UK-based International Audio Group (IAG) was one of the first organizations to acquire iconic audio brands. IAG owns Audiolab, Castle, Quad, Leak, Mission, and Wharfedale. In 2009, they purchased Luxman.
My most recent listening session with a Luxman amplifier was at the end of 2010. I had been…
To deal with signal-related temperature fluctuations, the M-10X employs what Luxman calls "a new configuration of high-precision fixed resistance components in the current mirror constant current circuit."
Power in listening
To make it easier to swap in and out of my system, I placed the M-10X and the Parasound monoblocks with which I was going to compare it on wheeled dollies. As usual when I review an amplifier or digital product, I didn't do any critical listening for a couple of weeks after installing the M-10X in my system, just using it for my daily dose of music. This process…
Sidebar 1: Specifications
Description: Solid state, class-AB power amplifier (output stage biased into class-A operation up to 12W). Inputs: 1 pair single-ended (RCA), 1 pair balanced (XLR). Outputs: 2 pairs binding posts. Power output: 150Wpc into 8 ohms (21.76dBW), 300W into 4 ohms (21.76dBW), 600W into 8 ohms (27.8dBW) as bridged monoblock (BTL). Instantaneous maximum output power: 1200W into 1 ohm (21.76dBW), 2400W into 2 ohms (21.76dBW), BTL. Frequency response: 20Hz–20kHz, +0/–0.1dB; 1Hz–130kHz, +0/–3dB. Voltage gain: 29dB. Input sensitivity (for 150W into 8 ohms): 1.24V. Input…
Sidebar 2: Associated Equipment
Analog source: Linn Sondek LP12 turntable with Lingo power supply, Linn Ekos tonearm, Linn Arkiv B cartridge, Channel D Seta L phono preamplifier.
Digital source: Roon Nucleus+ file server; Ayre Acoustics C-5xeMP universal player; MBL N31 CD player/DAC; Ayre Acoustics QA-9 A/D converter.
Power amplifiers: Parasound Halo JC 1+ monoblocks.
Loudspeakers: Golden Ear BRX, KEF LS50.
Cables: Digital: AudioQuest Vodka (Ethernet), AudioQuest Coffee (USB), DH Labs (1m, AES/EBU). Interconnect: AudioQuest Wild Blue (balanced). Speaker: AudioQuest Robin…
Sidebar 3: Measurements
I tested the Luxman M-10X with my Audio Precision SYS2722 system. I preconditioned the amplifier by following the CEA's recommendation of operating it at one-eighth the specified power into 8 ohms for 30 minutes. At the end of that time, the grilles over the internal heatsinks were hot, at 120.6°F (49.3°C), though the top panel was just warm at 90.9°F (32.8°C). Operating the amplifier for another 30 minutes at one-third the specified power, a level that results in the maximum heat dissipation in the output devices, increased the temperatures only slightly. The M-…
As early as 9AM on Friday, April 22, early registrants began wandering the halls of Chicago's Renaissance Schaumburg Hotel and Convention Center. By 9:30AM, the first semi-crazed rush for vinyl old and new had begun in The Record Fair. And by 10AM, music was resounding in all its glory in the 138 exhibit rooms and 10 floors that comprise AXPONA 2022.
Can anyone accurately count the number of brands? Perhaps all the angels who can dance on the head of a pin can. But for us mere mortals, enjoying music outside the confines of our shuttered dwellings and saying hello to people long unseen…
Nothing beats starting a show on a high note. Thanks to Musical Surroundings' Garth Leerer and the Quintessence Audio dealership of Chicago, that's what happened when Charlie Byrd played magnificently on a white vinyl direct-to-disc platter from the late 1970s.
The absolute clarity and timbral truth of drums, as well as the air around them, presented ample testimony to the success of the DS Audio Grand Master Optical set ($60,000), which is comprised of the Grand Master 3rd generation optical phono cartridge ($15,000, above) and two-chassis Grand Master equalizer ($45,000).
…