Dual CS 1249 specifications

Category : Record changer

Brand : Dual

General

Connections

Tech nical data Drive

Tech nical data Tonearm

Special equipment

has increased significantly recently (as of mid`23) (currently~ 200 - 400€).

Manufacturer: Dual
Model: CS 1249
Type: Plate Changer
Years of construction: 1975 - 1978
Manufactured in: Germany
Color: Black, Walnut, White
Power Consumption: 10 Watts
Dimensions: 420 x 148 x 365 mm (WxHxD)
Weight: 7.6 kg
Factory price approx.: 698 DM

Outputs: 1 DIN 5 pole. can also be converted to RCA + ground

Drive: 8-pole AC synchronous motor (Dual SM-840)
Speed: 33 1/3 & 45 rpm
Synchronisation fluctuations: +/- 0,055 % ( measured)
Rumble noise distance: unweighted: -45 dB, weighted: -67 dB (measured)
Turntable: Non-magnetic,dynamically balanced,305 mm, 1,3 kg
Rotational mass : 2,1kG incl. Subteller
a956e985535b8d57732d14dfa0e4c71ating mode: Belt
Pitch: ±6%

Cardan-mounted straight aluminum tube tonearm
Effective length: 222mm
Center distance (plate bearing to tonearm axis of rotation): 203mm
Angle of curvature: 25.33 degrees< /li>
Tangent ial track error angle: 0.16 degrees/cm
Overhang: 16mm
Overhang adjustment range: ~ 5mm
Effective mass: ~12 gr. incl. TK
Bearing friction: max. 0.07Mn vert./0.16mn hor.
Pickups from the factory: Shure DM 103 ME
1st vert. Self-resonance with this: ~ 6Hz
Pickup is interchangeable: yes,with subheadshell e.g. TK24

Height-adjustable tonearm for changer operation (Not to be confused with real VTA setting.)
External strobe light
Automatic continuous playback,switchable
Sub-chassis suspension for shock absorption
Counter-oscillator in the counterweight of the tonearm,not adjustable.
Set-up and take-off points of the tonearm adjustable
Set-up aid for manual operation
Lift height adjustable

The 1249 has the same "flywheel" belt drive with a subteller (ALU) attached to the axle and a turntable resting on it as the older 601 single player.
However, due to the changing axis, it has a weaker plate bearing.
Also, the zinc die casting on the 601 has given way to the aluminum die casting on the 1249.
The tonearm of the 1249 has been revised compared to the 601 and has a very low bearing friction and a counter-oscillator in counterweight, which allows a high scanning capability and safe scanning even of pickups that actually require a tonearm with a lower effective mass for optimal operation.
Like all pre-ULM arms (Ultra Low Mass) from Dual , the arm of the 1249 belongs to the lighter medium-weight arms with an effective mass of ~ 12gr. incl. Subheadshell (TK).
The motor is an 8-pole. AC synchronous motor without servo electronics (SM840).
The speed fine adjustment is done mechanically by spreading a slotted drive roller and is very sensitive.
The drive and tonearm are qualitatively superior to current dual models (CS-455,505-4).
The factory-installed pickup was chosen with regard to the changeover function and is well below the possibilities of the device.
MCs are also no problem unless they are explicitly designed for heavy arms.
Low-capacitive tonearm wiring and original connection cables.
The long-term speed drift is lower than with the DUAL direct drives at a (relatively)constant ambient temperature.
After this model was still very cheap in the used market for a long time (~ 100-150€), the prices are