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CIRCLEOP.QXD 5/4/00 5:03 pm Page 1
OPERATING
INSTRUCTIONS
CIRCLE STUDIO MONITORS
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 2 2
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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 . . . . . . . . . . . . . . . . . .
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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. The Circle 5 and Circle 3, available in both active and passive versions, together with the Circle 1 sub-woofer, are perfect for use in a variety of stereo a
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 5 PRECAUTIONS Circle Studio Monitors The active HHB Circle loudspeakers are simple to • When replacing the fuse in the active Circle 5, install, but like all electrical equipment, care must Circle 3 and Circle 1, use only the correct rating be taken to ensure reliable, safe operation. The of fuse - a 2A slow blow type for the Circle 5A following points should always be observed: and Circle 1A, or a 630mA slow blow type for the Circle 3A. The fuses used must con
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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. Unlike other protection circuits which limit power to the tweeter, affecting the
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 7 Figure Figure 1 2 Active Circle 5 Passive Circle 5 Rear Panel Rear Panel 4 6 2 8 10 0 MIN MAX – + 7
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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. The Circle 3 monitors can be used as part of a surround sound system since, passive or active, they produce a
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 9 Figure Figure 3 4 Active Circle 3 Passive Circle 3 Rear Panel Rear Panel 4 6 2 8 10 0 MIN MAX – + 9
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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. With its built-in active crossover, any combination of up to five full-range loudspeakers, depending on the application, may be connected to the Circle 1
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 11 Figure 5 Active Circle 1 Sub-Woofer Rear Panel 11
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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 The HHB Circle 1 is an active sub-woofer, application is important. The passive HHB Circle 5 containing built-in amplification and active requires connection to a power amplifier with a crossover circuitry, designed especially for use with suggested output between 50 and 200 Watts Circle 5 and Circle 3 loudsp
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 13 full-range loudspeakers can be utilized more With the HHB Circle 1 in ‘C mode’, the bass efficiently. This method of signal connection makes frequencies are filtered from the left, centre and the most of the Circle 1’s high quality filters. right inputs and summed together with the signal from the SUB input (either XLR or RCA phono). This method of connection ensures that any Figure dedicated sub bass mix is always reproduced by the Circle 1. 7 5.1 mode - m
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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. HHB Circle 5 and Circle 3 monitors are optimised for use under free-field conditions - so for the best results, consi
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CIRCLEOP.QXD 5/4/00 5:03 pm Page 15 SURROUND LOUDSPEAKER PLACEMENT • The loudspeaker arrangement for surround sound • Since the Circle 1 sub-woofer will only produce monitoring may comprise three front channels low frequencies, often with a wavelength of up to and two surround channels, each placed upright ten metres, it is often hard to localise, enabling on stands an equal distance from the listening the speaker to be placed on the floor or slightly position. to one side of the listening pos
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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. As passive, but with the addition of an internal power amplifier. Drive Units . . . . . . . . . . . . . . . . . . . . . . . . LF: Custom 110mm (4.5") NRSC cone, 25mm (1") voice coil, high linearity low-loss suspension Sensitivity For Full Output with Input sensitivity control at max: . . . .
