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Specifications

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 shielding antimagnet.

HF: Custom 28mm (1.1") ferro-fluid cooled soft dome with rear damping chamber.

28mm (1.1") high temperature aluminium voice coil and shielding antimagnet.

Frequency Response  . . . . . . . . . . . . . . . . . . . . 48Hz - 20kHz, +/- 3dB free space with very smooth off axis response.
Sensitivity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 dB 1W/1m.
Suggested Amplifier Power  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 - 200W.
Impedance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohms nominal.
Power Handling (programme)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120W.
Crossover . . . . . . . . . . . Pro-grade components on double-sided fibreglass PCB, critically damped, 2.6kHz crossover.
Connectors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Binding posts.
Dimensions (HxWxD)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420mm x 255mm x 300mm / 16.5" x 10" x 11.8".
Weight  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10kg (22lbs) each (net), 20.4kg (44.88lbs) packed in pairs (gross).
Finish  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Durable black paint finish.

Circle 5 Active

As above, 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. S&K 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 individually calibrated against reference for perfect stereo imaging.

Connectors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switchable XLR / RCA Phono.
Weight  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6kg (27.72lbs) each (net), 25.6kg (56.32lbs) packed in pairs (gross).

HHB Communications Ltd · 73-75 Scrubs Lane, London NW10 6QU, UK  
Tel: 020 8962 5000 · Fax: 020 8962 5050 · E-Mail: [email protected]

HHB Communications USA LLC · 626 Santa Monica Boulevard, Suite 110, Santa Monica, California 90401, USA  
Tel: 310 319 1111 · Fax: 310 319 1311 · E-Mail: [email protected]

HHB Communications Canada Ltd · 260 King Street East, Toronto, Ontario M5A 4L5, Canada  
Tel: 416 867 9000 · Fax: 416 867 1080 · E-mail: [email protected]

Visit HHB on-line at: http://www.hhb.co.uk

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