Technical Data - HHB CIRCLE STUDIO MONITORS Operating Instructions Manual

Circle 3 Passive
Transducer System . . . . . . . . . . . . . . . . . . . . . . . . . . 2 way monitor loudspeaker.
Drive Units . . . . . . . . . . . . . . . . . . . . . . . . LF: Custom 110mm (4.5") NRSC cone,
HF: 25mm (1") ferro-fluid cooled soft dome, high efficiency Neodymium magnet,
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Hz - 20kHz +/-3dB.
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83dB 1W/1m.
Suggested Amplifier Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 - 100W.
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohms nominal.
Power Handling (Programme) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60W.
Crossover . . . . . . . . . . . . . . . . . . . . . . Pro-grade components on fibreglass PCB,
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Binding posts.
Dimensions (HxWxD) . . . . . . . . 270mm x 175mm x 197mm / 10.6" x 6.9" x 7.8".
Weight . . . . . . . 3.7kg (8.1lbs) each (net), 8.4kg (18.5lbs) packed in pairs (gross).
Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Durable black paint finish.
Circle 5 Passive
Transducer System . . . . . . . . . . . . . . . . . . . . Ported 2 way monitor loudspeaker.
Drive Units . . . . . . . . . . . . . . . . . . . . . . . . LF: Custom 200mm (8") polymer cone,
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Hz - 20kHz, +/- 3dB.
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87dB 1W/1m.
Suggested Amplifier Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 - 200W.
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohms nominal.
Power Handling (Programme) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120W.
Crossover . . . . . . . . . . . . . . . . . . . . . . Pro-grade components on fibreglass PCB,
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Binding posts.
Dimensions (HxWxD) . . . . . . 420mm x 255mm x 300mm / 16.5" x 10.0" x 11.8".
Weight . . . . 10.0kg (22.0lbs) each (net), 20.4kg (44.9lbs) packed in pairs (gross).
Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Durable black paint finish.
Circle 1 Powered Sub-Woofer
Transducer System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Active bandpass twin chamber reflex sub-woofer.
Drive Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LF: 300mm (12") double-magnet, contour-optimised cone with
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Hz - 120Hz,+/- 3dB in free space.
Sensitivity For Full Output, input sensitivity at max, sub woofer (effects) channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V RMS.
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input sensitivity, LF boost, phase.
Active Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 main channels pass through Sallen & Key filters, crossover point at 120Hz, and
Power Amplifier . . . . . . . . . . . . . . . . . . . . . 160W min (programme). Anti thump on/off circuitry. Regulated low noise, low distortion power supply with long life capacitors,
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XLR inputs (female): L, C, R, L rear, R rear. XLR (female) and RCA phono: Sub-woofer (effects channel)
Main Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .European model: 220-240V, 50Hz. U.S. / Canadian model: 110-120V, 60Hz.
Dimensions (HxWxD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465mm x 414mm x 414mm / 18.3" x 16.3" x 16.3".
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.5kg (47.3lbs) each (net), 27.0kg (59.4lbs) packed in singles (gross).
Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Durable black paint finish with perforated purple grille.
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HHB Communications Ltd · 73-75 Scrubs Lane, London NW10 6QU, UK
Tel: 020 8962 5000 · Fax: 020 8962 5050 · E-Mail: sales@hhb.co.uk
HHB Communications USA LLC · 1410 Centinela Avenue, Los Angeles, CA 90025-2501, USA
Tel: 310 319 1111 · Fax: 310 319 1311 · E-Mail: sales@hhbusa.com
HHB Communications Canada Ltd · 260 King Street East, Toronto, Ontario M5A 4L5, Canada
Tel: 416 867 9000 · Fax: 416 867 1080 · E-Mail: sales@hhbcanada.com

TECHNICAL DATA

25mm (1") voice coil, high linearity low-loss suspension
rigid self-sealing polymer chassis and shielding antimagnet.
highly focused magnetic field 25mm (1") aluminium voice coil.
critically damped, 3.5kHz crossover.
high compliance long throw rubber surround.
25mm (1") high temperature aluminium voice coil and antimagnet.
HF: Custom 28mm (1.1") ferro-fluid cooled soft dome
with rear damping chamber. 28mm (1.1") high temperature
aluminium voice coil and antimagnet.
critically damped, 2.6kHz crossover.
Low moving mass for fast transient attack. Air-cooled magnet system. 40mm (1.6") diameter aluminium voice coil.
Circle Studio Monitors
Circle 3 Active
As passive, but with the addition of an internal power amplifier.
Sensitivity For Full Output with Input sensitivity control at max: . . . . . . . . 1V RMS.
Power (Programme) . . . . . . . . . . . . . . . . . . . . . . . . . . 60W Bass, 30W Tweeter.
Active Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . Crossover point at 3.5kHz.
Advanced design using ultra high precision components.
Low noise audio semiconductors and 1% precision
Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti thump on/off circuitry.
Connectors . . . . . . . . . . . . . . . . . . . Slide Switchable XLR (female) or RCA phono.
Main Input Voltage . . . . . . . . . . . . . . . . . . . . . European model: 220-240V, 50Hz.
Dimensions (HxWxD) . . . . . . . . 270mm x 175mm x 220mm / 10.6" x 6.9" x 8.7".
Weight . . . . . 5.0kg (11.0lbs) each (net), 11.0kg (24.2lbs) packed in pairs (gross).
Both active and passive Circle 3s are packaged in pairs. Single units can also be ordered.
Circle 5 Active
As passive, but with the addition of an internal power amplifier.
Sensitivity For Full Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V RMS.
Power (Programme) . . . . . . . . . . . . . . . . . . . . . . . . . 140W Bass, 70W Tweeter.
Active Crossover . . . . . Crossover point at 2.6kHz. Sallen & Key active filters for LF
and HF. Advanced design using ultra high precision components.
Low noise audio ICs and 1% precision resistors used throughout.
Power Amplifier . . . . . . . . . . . LF unit driven by twin power ICs in Push-Pull mode.
HF unit driven by a single IC. Anti thump on/off circuitry.
Regulated low noise, low distortion power supply with long life
capacitors, guaranteeing full power over a long service life.
Polyswitch
Every module calibrated against reference for perfect stereo imaging.
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switchable XLR / RCA phono.
Main Input Voltage . . . . . . . . . . . . . . . . . . . . . European model: 220-240V, 50Hz.
Dimensions (HxWxD) . . . . . . 420mm x 255mm x 300mm / 16.5" x 10.0" x 11.8".
Weight . . . . 12.6kg (27.7lbs) each (net), 25.6kg (56.3lbs) packed in pairs (gross).
Both active and passive Circle 5s are packaged in pairs. Single units can also be ordered.
high compliance long throw rubber surround rigid magnesium chassis.
are available in XLR outputs. Advanced design using ultra high precision components.
Low noise audio semiconductors and 1% precision resistors used throughout audio circuitry.
all band limited to 120Hz to connect to 'satellite' speakers.
Sallen & Key active filters for LF and HF.
resistors throughout audio circuitry.
Regulated low noise and distortion power supply.
U.S. / Canadian model: 110-120V, 60Hz.
® tweeter overload protection with LED indicator.
U.S. / Canadian model: 110-120V, 60Hz.
guaranteeing full power over a long service life.
XLR outputs (male) L, C, R, L rear, R rear,
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