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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 and surround sound professional monitoring

applications. Extremely responsive, they deliver every

performance with power and clarity.

The HHB Circles are a true family in every sense - both in

character and appearance. Great consistency in their design

and manufacture has resulted in a distinctive Circle sound,

uniformly matched across the entire range, enabling Circle 3s

and 5s to be freely combined in any surround setup without

detrimental effect to the reproduced sound. Striking purple

cones or grilles and a durable black paint finish on all models

further strengthen the family resemblance.

With their high quality audio components and low distortion

filters, the HHB Circle studio monitors are full of features. The

cone on the Circle 5 is formed from an injection moulded

polymer, with varying thickness across its diameter, for a

grain-free texture and minimal cone distortion. And with

controls for master volume on the active Circle 3 and 5, along

with mode switching, input sensitivity, LF boost and phase

controls on the Circle 1, all Circle monitors are fully adaptable

for every studio or project installation.

Whether you possess a stereo pair of loudspeakers or an

entire surround sound system, the HHB Circle studio

monitors are simple to set up and simple to use. With their

many flexible options, they offer a tailor-made solution for

any monitoring application. These operating instructions for

the Circle monitors explain the fundamentals of loudspeaker

connection and positioning, providing clear and simple

information for monitor installation - whatever your

requirements.

Introduction

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Summary of Contents for Circle 1

Page 1: ...STUDIO MONITORS CIRCLE SERIES Operating Instructions interstage Phistersvej 31 2900 Hellerup Danmark Telefon 3946 0000 fax 3946 0040 www interstage dk pro audio with a smile...

Page 2: ...2...

Page 3: ...Circle 3 rear panel fig 4 9 CIRCLE 1 10 Key features active 10 Active Circle 1 sub woofer rear panel fig 5 11 LOUDSPEAKER CONNECTION 12 Circle 5 and Circle 3 active 12 Circle 5 and Circle 3 passive 12...

Page 4: ...cones or grilles and a durable black paint finish on all models further strengthen the family resemblance With their high quality audio components and low distortion filters the HHB Circle studio mon...

Page 5: ...akers the mains power should be derived from a central set of outlets that have a solid ground connection Should a problem exist with hum loops the ground connections on the XLR input connectors shoul...

Page 6: ...h on and off axis Tight controlled low end performance Accurate bass treble driver time alignment 200mm 8 bass mid driver with a unique injection moulded cone for increased dynamics and minimal bass c...

Page 7: ...Figure 1 Active Circle 5 Rear Panel Figure 2 Passive Circle 5 Rear Panel MIN MAX 0 2 10 4 6 8 7...

Page 8: ...t 110mm 4 5 non resonant suspension coupling bass mid driver with a paper pulp cone optimised for smooth accurate sound reproduction with minimum distortion Individually tested ferro fluid cooled soft...

Page 9: ...Figure 3 Active Circle 3 Rear Panel Figure 4 Passive Circle 3 Rear Panel 9...

Page 10: ...Circle 1 Designed for use as an integral part of any surround sound monitoring system Increases the bandwidth of a loudspeaker system down to 33Hz Exceptionally low colouration and distortion 300mm 12...

Page 11: ...11 Figure 5 Active Circle 1 Sub Woofer Rear Panel...

Page 12: ...ff when connecting or disconnecting any signal to or from the loudspeakers or when changing the position of the selector switch since the loudspeakers and internal amplifiers may be damaged When audio...

Page 13: ...ity with both stereo and LCR source formats Figure 8 B mode switch in B position The three controls on the HHB Circle 1 allow simple configuration for each particular surround setup An input sensitivi...

Page 14: ...ngle where all sides are of equal length The listener should not sit too close to the speakers i e within this imaginary triangle since the important centre image sweet spot can be greatly affected wh...

Page 15: ...in films and pop music extreme low frequency effects as produced by the HHB Circle 1 are often felt rather than actually heard Since the Circle 1 sub woofer will only produce low frequencies often wit...

Page 16: ...mme 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 ea...

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