MICRO SEIKI DQX-1000

OTTOBRE 2022

Decisione non facile quella di dare via un Micro Seiki RX-1500 full upgaded con tre bracci per prendere questo DQX-1000, ma la voglia di semplificare un po l'impianto ha avuto la meglio ed insieme al giradischi è andato via anche lo spettacolare pre-phono Cyrys Phono Signature che lascia il posto al più semplice e piccolo Electrocompaniet ECP-1.

Questa semplificazione del sistema in un attimo ha sottratto un pre-phono a due telai con due cavi di alimentazione, tre bracci, tre testine e relativi cavi di collegamento per ridursi ad un solo braccio con relativo cavo ed un pre phono ad un solo ingresso.

Dopo aver dato via tutto, giradischi, bracci e testine, anche con una certa facilità, sono molto richiesti dal mercato dell'usato i giradischi ed i bracci della Micro Seiki, mi sono tenuto solo il braccio da 10" SME 310, con relativa basetta utilizzabile all'istante su questo DQX-1000 e la testina Denon DL103 modificata sia nella forma che nella sostanza da Daniele Montebovi di Cartridge Lab (stilo in boro, diamante taglio Shibata, etc.).

Il cambiamento è drastico, si passa da un giradischi con trazione a cinghia dal peso complessivo superiore ai 40 kg. ad uno a trazione diretta che ne pesa poco più di 12, ma parliamo sempre di eccellenti macchine progettate e costruite nel periodo più florido per l'alta fedeltà, quei trent'anni che vanno dagli anni 70 all'inizio del terzo millennio.

Il DQX-1000 come detto è un puro trazione diretta realizzato in alluminio caratterizzato da tre punti di appoggio alla testa dei quali è possibile montare altrettanti bracci con apposite basette. Ha un controller esterno per la gestione dell'accensione, della selezione delle velocità, dell'inserimento o meno del controllo al quarzo e del regolatore di velocità in abbinamento all'uso dello stroboscopio quando non viene usato il "quartz lock".

Il DQX-1000 nel 1978 sostituisce il DDX-1000, identico in tutto tranne che nella mancanza del controllo al quarzo e per il piatto con doppia scala stroboscopica, qui sul DQX-1000 invece unica. Giradischi di una robustezza assoluta, a volte utilizzato anche dai DJ in coppia e flight case, al posto dei diffusissimi Technics SL1200.

Silenzioso, preciso, stabile fa bene il lavoro che gli viene assegnato, ossia far girare regolarmente il vinile senza trasmettere rumore o vibrazioni.

Dopo l'esaltante quanto complessa esperienza con il Micro RX-1500 spero di fermarmi un bel po a godermi la musica con questo DQX-1000 su cui ho montato un braccetto originale Micro Seiki che pulisce i solchi prima che arrivino al diamante della testina ed ho fatto realizzare a misura una bella cappa il plexiglass che impreziosisce il già prezioso giradischi, icona di stile ed innovazione degli anni 90.

Description:

The DQX-1000 uses a direct drive, frequency governed motor for optimum speed stability housed in a unique 3-point supporting frame to increase stability.

Itself incomparable, the DQX-1000 can help you enormously in comparing cartridges and tonearms.

The turntable is so neutral, you effectively remove it as a variable in your judgement.

And since up to 3 tonearms can be mounted simultaneously, your comparative evaluations will be much more accurate and definitive.

Specifications:

Drive System:  Direct Drive

Motor:  Quartz Locked PLL DC servo motor
Speeds:  33 and 45 rpm
Turntable Platter:  310 mm (12¼ inch) diameter, aluminum diecast platter
Platter Weight:  2,9 kg (6,38 lbs)
Moment of Inertia:  600 kg · cm²
Wow and Flutter:  less than 0,02%
S/N Ratio:  More than 75 dB (DIN-B)
Starting Torque:  1,5 kg · cm
Power:  120 V, 60 Hz (USA & Canada); 220 - 240 V, 50 Hz (other areas)
Power Consumption:  11 W
Dimensions (W x H x D):  444 x 125 x 444 mm (17½  x 5 x 17½ inch)
Weight:  12,0 kg (26,4 lbs) without control unit

History:

The DQX-1000 is the 1978 revised version of the DDX-1000 with a Phase Locked Loop added. Defeatable nevertheless.

Also changed is the 31cm platter, heavier at 2,9kg and which has only one set of strobe stripes ; the motor was beefed-up as well to reach a 600kg/cm2 inertial mass and a 3dB bettered s/n ratio.

The ps/command box (not named MD-1000 anymore) holds a single start button, pitch knob, speed selector and PLL on/off.

The tonearm bases were the same for both (AX-1G to AX-6G) to fit everything from the ubiquitous SMEs to the Technics EPA-100 or PUA-1600L.

The motor of the DDX was used as basis for the Marantz Tt 1000 (1979), and that of the DQX-1500 (an updated DQX-1000) for the Tt 1000 mkII (1992). And, as often, Micro's direct-drive motors came from Victor Company (JVC).

The DQX-1000 remained available much later in Germany when, in Japan, Micro Seiki was already back to belt-driven models only (but for the penultimate S-Z1, 1983).

Qui sotto le foto del giradischi dell'amico Sandro, con SME 309 e testina MC Ortofon Rondò

MICRO SEIKI DQX-1000
Design Integrity:
These unique design concepts have been exhaustively researched and tested by our engineers. All the manufacturing and assembly stages conform to the highest quality standards in order to produce this definitive turntable system. The result is surely one of the finest turntables available. Absolutely superb mechanical stability and precision.
Itself incomparable, the DQX-1000 can help you enormously in comparing cartridges and tonearms. The turntable is so neutral, you effectively remove it as a variable in your judgment. And since up to three arms can be mounted simultaneously, your comparative evaluations will be much more accurate and definitive.
The Unique Turntable System:
The three large insulators on the DQX-1000 form a unique absorber mechanism taht not only eliminates entirely the hazards of external vibration, but also serves to isolate the arm mount from the turntable. Up to three high quality tonearms may be mounted simultaneously, and tonearms are interchanged easily and quickly. The power supply and transformer are completely isolated in a separate control unit, thus eliminating any feedback or hum interference.
Turntable:
The exceptional performance stability of the DQX-1000 can be attributed to the large: 31 cm; 2,9 kg, the platter has a significantly high moment of inertia: 600kg/cm².  Additionally, a low shaft burden has been achieved by distributing the weight around the perifery of the platter. The rotational momentum is accordingly very even and constant. Sroboscope markings are inscribed on the turntable, and as the stroboscope is aligned to a built-in oscillator, power line variations have no effect whatsoever on the rotational speed.
PLL  Quartz locked Servo Motor:
The DQX-1000 uses a direct drive, frequency  governed servo motor for optimum speed stability. A strong 1,5 kg (3,3 lbs) starting torque facilitates fast, accurate speed attainment. And even under extreme conditions, the constant speed characteristics are unsurpassed: a 3 gram stylus pressure at 30 cm from the center of the platter produces non speed deviation.
Turntable Frame:
A unique 3-point supporting frame has been developed in order to increase the stability of the DQX-1000 system. Thus the mechanism is contained within the most stable operating conditions possible. The 1,9 kg frame is made of aluminium alloy.
Motor Shaft Reinforcement:
The motor frame features a structure which is integrayed with the unique 3-point supporting frame. The resonance which is generated as the platter rotates is improved with the resulting mechanical strength. A reinforcement effect is also provided for the motor shaft (platter shaft) since it serves as a supporting pillar. This is a structure which clearly defines the fulcrum of the platter when the records are being played.
Insulators:
The two-layer absorber system consists of cushion rubber and fulcrum lies in the upper part of the insulators, the resulting low center of gravity both horizontally and vertically.
Arm Mounts:
Six modular arm mounts are available optionally for precise, convenient installation of any high quality tonearm on any of the three positions. Now you can easily compare performance characteristics of tonearms and cartridges in order to maximize the efficiency of your total system interface. The DQX-1000 allows you to match specific disc playback characteristics with your cartridges and loudspeakers for the fullest possible enjoyment.
Control Unit:
The turntable controls and power supply have been incorporated in an independent unit for optimum ease of access to the power button, speed select buttons, and fine speed adjustment controls, which can very the rated speed ±6% - a full octave.
Magnetic materials are excluded from the cover, and a wooden case is employed in order to improve the sound quality. The quartz circuit has an On/Off control, and when it is set to Off, the signals bypass the PLL servo circuit entirely.
BROCHURE
FLYER
micro-seiki-dqx-1000-brochure.pdf
Documento Adobe Acrobat 416.6 KB
MANUALE
OWNERS MANUAL ENG
micro-seiki-dqx-1000-owners-manual.pdf
Documento Adobe Acrobat 1.0 MB