Turbosound 50T user manual Amplifier Considerations, Loudspeaker Connections, Impact

user manual

Impact 50

AMPLIFIER CONSIDERATIONS

Turbosound speaker enclosures should be driven by high quality power amplifiers designed for professional use. Such amplifiers will have balanced inputs, DC and RF fault protection, and well designed cooling systems for reliability.

The program power listed in the loudspeaker’s technical specification is the best guide to the size of amplifier required for general purpose applications. The amplifier should therefore be capable of delivering long term broadband power equal to the loudspeaker’s program power rating at the loudspeaker’s stated nominal impedance. This approach allows sufficient headroom to generate good dynamic range.

RECOMMENDED AMPLIFIER POWER RATINGS:

The amplifier's rated r.m.s. continuous power output (20Hz–20kHz,

per channel) should be equal to the program power handling of the

loudspeaker at its nominal impedance.

In general, the more powerful the amplifier the better it will sound, provided that it is not driven into sustained clipping. It should be understood that overdriving an insufficiently powered amplifier is more likely to cause loudspeaker damage—the total energy in a heavily clipped signal is far higher than in an unclipped signal—than operating a more powerful amplifier within its specified ratings.

LOUDSPEAKER CONNECTIONS

The Impact 50 is provided with a recessed connector panel housing a pair of colour–coded, spring–loaded push terminals. These are used for input and loop– out connections to further Impact 50 enclosures. Note that looping out to additional enclosures has the effect of reducing the total load impedance on the amplifier. For example, two 16 ohm cabinets in parallel give a combined total impedance of 8 ohms. It is possible to connect four Impact 50 cabinets in parallel to one amplifier channel, providing that amplifier is capable of delivering long term power output into 4 ohms. Never connect loudspeakers to a power amplifier whose total combined impedance is lower than the amplifier’s recommended minimum load impedance.

Impact 50 manual page 5