5/4/00 5:03 pm Page 1 OPERATING INSTRUCTIONS CIRCLE STUDIO MONITORS CIRCLEOP.
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 3 CONTENTS Circle Studio Monitors INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CIRCLE 5 . . . . . . . . . . . . . . . . . . . . . .
CIRCLEOP.QXD 5/4/00 5:03 pm Page 4 INTRODUCTION Circle Studio Monitors HHB Circle studio monitors are designed and built with HHB’s customary attention to detail. More than 20 years’ experience and a number of unique innovations have combined to produce studio monitors capable of performing in the most demanding professional environments.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 5 PRECAUTIONS Circle Studio Monitors The active HHB Circle loudspeakers are simple to install, but like all electrical equipment, care must be taken to ensure reliable, safe operation. The following points should always be observed: • This equipment must be earthed. In a situation using multiple speakers the mains power should be derived from a central set of outlets that have a solid ground connection.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 6 CIRCLE 5 Midfield Monitors As part of a complete monitoring system, HHB Circle 5 studio monitors will deliver the clean, highly accurate sound required. Their reliable sound output and wide flat frequency response makes them suitable for the highest quality audio monitoring applications. The Circle 5s feature a solid state Polyswitch® to protect the tweeter from excessive input.
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 8 CIRCLE 3 Compact Nearfield Monitors The compact size of the HHB Circle 3 studio monitor is ideal when space is at a premium. Equally at home in project or commercial studios, the Circle 3 features a 4.5" paper pulp cone, optimised for use in the smaller cabinet. An anti magnet screen allows the Circle 3 to be placed next to computer or video monitors.
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 10 CIRCLE 1 Powered Sub-Woofer The Circle 1 active sub-woofer is the perfect loudspeaker to complement the Circle 5 and Circle 3 in surround sound applications. Faithfully reproducing all the low frequency effects found in films and music, the HHB Circle 1 greatly improves the bandwidth of loudspeaker systems.
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 12 LOUDSPEAKER CONNECTION Circle Studio Monitors Circle 5 & Circle 3 - Passive Circle 1 Active Sub-Woofer Choosing an amplifier to match your speakers and application is important. The passive HHB Circle 5 requires connection to a power amplifier with a suggested output between 50 and 200 Watts RMS, and the Circle 3 should be powered by an amplifier with an output of 30 to 100 Watts. Connection is made via a pair of binding posts on the rear of the loudspeaker.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 13 full-range loudspeakers can be utilized more efficiently. This method of signal connection makes the most of the Circle 1’s high quality filters. 7 Figure 5.1 mode - method 2 With the HHB Circle 1 in ‘C mode’, the bass frequencies are filtered from the left, centre and right inputs and summed together with the signal from the SUB input (either XLR or RCA phono). This method of connection ensures that any dedicated sub bass mix is always reproduced by the Circle 1.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 14 LOUDSPEAKER POSITIONING Circle Studio Monitors Whether you have a stereo or surround sound system, correct positioning of loudspeakers in the room is essential, as this will greatly affect the accuracy of the reproduced sound. Speakers radiate sound from all directions and therefore placing them against walls or on the floor is not advisable.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 15 SURROUND LOUDSPEAKER PLACEMENT • Since the Circle 1 sub-woofer will only produce low frequencies, often with a wavelength of up to ten metres, it is often hard to localise, enabling the speaker to be placed on the floor or slightly to one side of the listening position without altering the overall spatial image.
CIRCLEOP.QXD 5/4/00 5:03 pm Page 16 TECHNICAL DATA Circle Studio Monitors Circle 3 Passive Circle 3 Active 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.
