MASTER CONTROL

SILLITOE MM STEREO FEEDBACK CUTTERHEAD AND MASTER CONTROL CUTTING AMPLIFIER FORM AN INTEGRATED ELECTROMECHANICAL SYSTEM FOR ACCURATE TRANSFER OF AUDIO SIGNAL TO GROOVE GEOMETRY.

INTEGRATED DISK CUTTING AMPLIFIER, 19″ 2RU RACK MOUNT, AUDIO PATHS FOR DISK CUTTING & PLAYBACK.

CLASS COMPLIANT USB DAC, PCM 44.1kHz – 384kHz 16-32 BIT. FOR CUTTING FROM PERFECT GROOVE (RECOMMENDED) OR 3rd PARTY DAW.

SOURCE / FEEDBACK / PLAYBACK PREAMP NOW INCLUDED AS STANDARD.

SFP PREAMP INPUTS (CUTTERHEAD SOURCE) SWITCHABLE BETWEEN INBUILT USB DAC & BALANCED XLR INPUTS (REAR PANEL).

NEW SFP PREAMP NOW INCLUDED IN CURRENT 2021 PREORDER BUILDS, SOME OPTIMISATION OF COMPONENT VALUES CURRENTLY IN REVISION (UPDATES FORTHCOMING). AT PRESENT APPLICATION OF FIR (OR EQUALISATION, SPECIFICALLY IN THE ANALOG DOMAIN) TO SOURCE AUDIO IS REQUIRED TO ACHIEVE FLAT RESPONSE.

MONITOR VIA VUPPM METERING & XLR OUTPUTS (REAR PANEL), SWITCHABLE BETWEEN SOURCE AUDIO, CUTTERHEAD FEEDBACK & PHONO PLAYBACK.

MOVING MAGNET STANDARD PHONO STAGE UPGRADABLE TO MOVING COIL, UPGRADE CAN INCLUDE SWITCHING BETWEEN MM & MC.

350WPC CLASS D CUTTERHEAD AMPLIFICATION.

CUTTERHEAD CURRENT METERING, TRANSDUCER PROTECTION FUSES AND TRUE BYPASS CUTTERHEAD MUTE.

MASTER CONTROL ANALOG SIGNAL PROCESSING OPTIONS

MAY NEED CUSTOM FRONT & REAR PANELS, OR TO BE HOUSED IN AN EXTERNAL 19″ CASE DEPENDING ON CHOICES.

ANALOG INPUT GAIN CONTROL.

ANALOG HPF & LPF.

ANALOG ELLIPTICAL EQUALISER.

ANALOG MID / SIDE & STEREO WIDTH.

MC PHONO STAGE, CLIENT CHOICE OF CARTRIDGE, CALIBRATED FOR PLAYBACK AND MONITORING.

PHONO UPGRADE WITH COMPREHENSIVE OPTIONS FOR PLAYBACK, FLAT TRANSFER (NO RIAA EQ) & MONITORING IO.

HEADPHONE AMPLIFIER.

ADDITIONAL AUDIO PATH OPTIONS

ADC OPTIONS AVAILABLE FOR VINYL PLAYBACK TRANSFER INTO THE DIGITAL DOMAIN FOR ARCHIVING, CONSERVATION AND RESTORATION.

CUTTERHEAD

THE MM STEREO FEEDBACK CUTTERHEAD IS A MECHANICAL ARMATURE IN WHICH THE CUTTING TOOL (STYLUS) IS MOUNTED BETWEEN TWO ELECTROMAGNETIC TRANSDUCERS ARRANGED IN V2 MOTOR FORM.

FEEDBACK IS EMPLOYED VIA DISCRETE VELOCITY SENSE TRANSFORMERS TO NEGATE MECHANICAL SYSTEM RESONANCE FOR FLAT FREQUENCY & PHASE TRANSFER.

THE DESIGN, BUILD AND FACTORY CALIBRATION OF THE MM CUTTERHEAD & MASTER CONTROL CUTTING AMPLIFIER SUBSYSTEMS ENSURE A MECHANICALLY AND ELECTRICALLY TUNED SYSTEM WHICH OPERATES ACCURATELY OVER THE AUDIO BANDWIDTH IN TRANSFER OF SOURCE INPUT TO DISK & PLAYBACK OF DISK.

SILLITOE MODULAR DESIGN ALLOWS WARRANTY, SERVICE, SUPPORT AND REPAIR TO TAKE PLACE WITH MINIMAL DOWN TIME.

THE NOVEL MM CUTTERHEAD IS A DEPARTURE FROM TRADITIONAL DISK MASTERING TECHNOLOGY, PROVIDING BENEFITS IN POWER HANDLING EFFICIENCY & ROBUSTNESS WHICH ALLOWS THE ENGINEER TO PUSH LEVELS WITH CONFIDENCE.

DRIVE TRANSDUCER SERVICE AND REPAIR DOESN’T REQUIRE TIME CONSUMING & COSTLY MECHANICAL TEARDOWN AND REBUILD.

MOVING MAGNET SENSING TRANSFORMERS CANNOT BE DAMAGED DURING USE (EVEN IF THE SYSTEM WERE TO BE CALIBRATED INTO SELF OSCILLATION).

PROTOTYPE PERFORMANCE, FUNDAMENTAL MECHANICAL RESONANCE ~1.3kHz, SECOND RESONANCE (FEEDBACK APPLIED) ~11kHz.

WE AREN’T RELEASING PROTOTYPE FREQUENCY RESPONSE & CHANNEL SEPARATION SPECIFICATIONS UNTIL WE HAVE BUILT BATCHES.

PLEASE LISTEN TO & ANALYSE THE TEST CUTS (CONTACT FOR LINKS).