Up for sale we have a Rare Continuum Criterion Turntable with a copperhead Arm. This is an outstanding turntable and is considered as one of the best out there.
Phone (719)203-6619 Website www.audiolimits.com
Nested Platter Design using our new proprietary formula for Magnesium Alloy. 30kg Mass of platter assembly 330mm Diameter.
New MILSPEC Alloy used for highly damped platter ballast.
New Fully Sealed Self Lubricating Highly Damped Rigid Bearing Design with Inverted 30mm Bearing shaft of special alloy running in ultra hard steel bushings.
Vacuum Rotary Feedthrough for main bearing with low friction polymer seal.
Massive Highly damped Magnesium Alloy Chassis with internal ribbing Shape Optimised for new bearing platter assembly using www.advea.com Reshape(tm) software.
New Motor Technology Linear 3Phase AC - 24Volt DC Brushless design with integral optical encoder for motion control. Proprietary DSP software designed for ultra-low cogging and torque ripple with speed stability of 0.006%. High Torque 600 oz/inch capability continuous.
33, 45, 78 with wide range adjustment and absolute lock.
Motor is Belt Drive using Pyrathane precision oring.
New Vacuum Pump design with Stealth Mode Operation. Designed for continuous operation but quiet enough to house in room and in rack.
New proprietary design Pulse Removal and Echo Filter System (PREFS) to remove platter to record vibration signature of continuous vacuum pump systems.
New Decoupled Armboard design using Magnetic Stabilisation System (new lower cost derivative of the Caliburn Armboard System)
Continuum Copperhead tonearm
Named after a rare, highly venomous Australian snake, the Copperhead's design is musical and remains uncoloured by spurious resonances.
The Copperhead's shape is refined and sleek, maintaining the signature free sound inherent in the Cobra design. The wand is eggshell thin with special contours and compound curves to "shape" the resonant behaviour of the arm, only visible with specialized software tools, but clearly audible to experienced listeners.
Copperhead Wand - Reshape TM Shape Optimised Resonance Tuned Compound Curve Wand from proprietary woven fibre technology pioneered by Continuum Audio Laboratories.
Wands are interchangeable allowing you to rapidly interchange arm wands for quick cartridge changeovers (i.e Stereo to Mono)
Unique Azimuth Stabilised Bearing system (also found in the Cobra tonearm system).
The Sapphire Ring Swash plate rides on damped ABEC9 miniature precision bearings to stabilize the arm azimuth.
Primary Radial and Vertical Pivot is on a primary Sapphire Vee Jewel bearing with hardened stainless pivot.
Adjustable Azimuth: Azumth is adjustable and repeatable.
Adjustable VTA: Copperhead uses a 25mm central tower with a 40TPI Microscope Thread for ultra fine VTA adjustment. VTA is adjustable on the fly.
Low Mass Pivot design: No additional mass is placed over the pivot to improve the responsiveness of the bearing system.
The Copperhead is free of the inertial energy storage found in high mass bearing systems.
Ultra Rigid Central Tower: Located in a precision machined mounting collar with integrated locking collar.
This locking collar spreads the clamping load on the adjustable VTA shaft and prevents movement when locked. No point loads.
Precision Graduated Radial VTA Vernier Gauge: Allows for repeat VTA setting accurate to 1 arc minute (360 degree graduation).
4 mm adjustment at rear pivot equals 1 degree of Stylus Rake Angle adjustment. A complimentary VTA Vertical Scale Vernier allows for broad range calibration.
Large Scale Cartridge Weight Adjustment: By a simple addition/subtraction method with supplied washer kit this maintains the designed optimum effective mass relationship with a broad range of cartridges.
Small Scale Cartridge Weight Adjustment: By a precision set screw at the rear of the arm the ultra fine adjustment allows for +- 0.5 Grams in 0.001gram increments
Effective Length: (from stylus to pivot point) 239mm
Overhang: (from Stylus to spindle Centre) 17.3mm
Offset: (Headshell Offset in degrees) 23 Degrees
Cartridge Fixing Centres: 12.7mm for standard M2.5 socket head cap screws
Mounting Distance: (from pivot to spindle centre) 221.7mm
Arm Mount Hole Pitch: 76mm by 4 equidistant cardinal points for 4mm metric socket head cap screws.
Depth Below mounting surface: 40-50mm.
Radial Clearance for Counterweight: 90mm
Clearance from plinth surface to top of arm mount: 150mm preferred for arm wire training.
Cartridge Weight Range: 0-20Grams - Adjusted by Mass Addition Subtraction of Supplied Weight Adjustment Kit. Fine tuned by 8 Gram sliding set screw for 0.001 Gram adjustment increments.
VTA Adjust: - Yes
Azimuth Adjust: - Yes
Horizontal Natural Frequency: 8-10Hz depending on cartridges
Vertical Natural Frequency: 8-10Hz depending on cartridges
NULL POINTS: 66.0mm Inner 120.8mm Outer
Audio Lead: Supplied with Copper Litz as 1.5 meter standard in our preferred configuration of single RCA Termination from Cartridge Clip to RCA Male Connector.
Other Arm leads are available and can be supplied on request. Other arm wires on request.
DIN Plugs: can be fitted as an optional extra.
Complete Arm Weight: 0.5Kg Nominal