Martin Audio AQ8 User's Guide download pdf (Page 19)

(*Note that the AQ5 is a wide coverage, dual driver system. Each AQ5 has two full-range ICT™

devices horizontally arrayed at 50

°. A 100° horizontal splay angle between AQ5 cabinet

centres continues the array and provides very smooth coverage)

Useful high frequency coverage for pairs of AQ Series loudspeakers

Horizontally arrayed pair

(minimum – maximum centre-to-centre splay)

Total horizontal coverage

2 x AQ5 (100 - 120°) 220 - 240°

2 x AQ6 (45 - 90°) 135 - 180°

2 x AQ8 (45 - 90°)

135 - 180°

2 x AQ10 (45 - 90°)

135 - 180°

2 x AQ12 (45 - 80°)

125 - 160°

2 x AQ15 (45 - 80°)

125 - 160°

Vertically arrayed pair

(minimum – maximum centre-to-centre splay)

Total vertical coverage

2 x AQ5 (50 - 60°) 110 - 120°

2 x AQ6 (45 - 90°) 135 - 180°

2 x AQ8 (25 - 50°)

75 - 100°

2 x AQ10 (25 - 50°)

75 - 100°

2 x AQ12 (25 - 50°)

75 - 100°

2 x AQ15 (25 - 50°)

75 - 100°

11. Choosing a power amplifier

The high efficiency and impressive power handling of AQ series loudspeakers combine to produce

a system capable of very high sound pressure levels and impact.

To realise full AQ Series performance use a power amplifier capable of delivering Peak Power*

without excessive clipping. Power amplifier clipping should be avoided. A heavily clipped amplifier

will deliver twice its rated power to the loudspeaker. Much of this excess power will be dissipated in

the HF section causing premature ageing and, possibly, driver failure.

AES Power

This is the long-term power capacity of the loudspeaker taking into account the loudspeaker’s bandwidth and minimum

impedance. It is measured to Audio Engineering Society standards using band-limited pink noise as the test source

and is regarded as a reliable indication of the loudspeaker’s long-term power handling before thermal damage is

caused.

*Peak Power

This is the short-term power capacity of the loudspeaker and is typically 4x (6dB) higher than the quoted AES power.

Martin Audio loudspeakers are designed to handle this short-term peak power. This allows speech and percussion

transients to be produced without hindrance whilst a correctly configured AQX controller protects the loudspeaker from

accidental long-term overload (e.g. howl-round).

AQX limiter time constants are optimized to permit the faithful production of short-term transients at

peak power whilst protecting the system from long-term thermal damage.

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Martin Audio AQ8 User's Guide Page 19

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