Circle 3 Passive
Transducer System . . . . . . . . . . . . . . . . . . . . . . . . . . 2 way monitor loudspeaker.
Drive Units . . . . . . . . . . . . . . . . . . . . . . . .LF: Custom 110mm (4.5") NRSC cone,
25mm (1") voice coil, high linearity low-loss suspension
rigid self-sealing polymer chassis and shielding antimagnet.
HF: 25mm (1") ferro-fluid cooled soft dome, high efficiency Neodymium magnet,
highly focused magnetic field 25mm (1") aluminium voice coil.
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,
critically damped, 3.5kHz crossover.
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 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.
Sallen & Key active filters for LF and HF.
Advanced design using ultra high precision components.
Low noise audio semiconductors and 1% precision
resistors throughout audio circuitry.
Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti thump on/off circuitry.
Regulated low noise and distortion power supply.
Connectors . . . . . . . . . . . . . . . . . . . Slide Switchable XLR (female) or RCA phono.
Main Input Voltage . . . . . . . . . . . . . . . . . . . . . European model: 220-240V, 50Hz.
U.S. / Canadian model: 110-120V, 60Hz.
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 Passive
Transducer System . . . . . . . . . . . . . . . . . . . . Ported 2 way monitor loudspeaker.
Drive Units . . . . . . . . . . . . . . . . . . . . . . . .LF: Custom 200mm (8") polymer cone,
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.
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,
critically damped, 2.6kHz crossover.
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 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®tweeter overload protection with LED indicator.
Every module calibrated against reference for perfect stereo imaging.
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switchable XLR / RCA phono.
Main Input Voltage . . . . . . . . . . . . . . . . . . . . . European model: 220-240V, 50Hz.
U.S. / Canadian model: 110-120V, 60Hz.
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.
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
high compliance long throw rubber surround rigid magnesium chassis.
Low moving mass for fast transient attack. Air-cooled magnet system. 40mm (1.6") diameter aluminium voice coil.
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
are available in XLR outputs. Advanced design using ultra high precision components.
Low noise audio semiconductors and 1% precision resistors used throughout audio circuitry.
Power Amplifier . . . . . . . . . . . . . . . . . . . . . 160W min (programme). Anti thump on/off circuitry. Regulated low noise, low distortion power supply with long life capacitors,
guaranteeing full power over a long service life.
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XLR inputs (female): L, C, R, L rear, R rear. XLR (female) and RCA phono: Sub-woofer (effects channel)
XLR outputs (male) L, C, R, L rear, R rear,
all band limited to 120Hz to connect to ‘satellite’ speakers.
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.
Dealer Stamp
www.hhb.co.uk
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 DATACircle Studio Monitors