EAW SB730 - Manual (Page 8)

Page 8 of 16 EAW KF730 & SB730 PRELIMINARY OWNER’S MANUAL
5.7.2 Selecting an Appropriate Amplifier Size
The amplifier for your loudspeaker should be sized according to both the sound levels required and the
type of audio signals that will be reproduced. If you are unsure of how to determine these parameters,
consult a qualified professional or contact EAW’s Application Support Group.
If a KF730 Line Array is used for professionally operated and controlled concert applications, a rule of
thumb can be applied. Where the full output capabilities of the loudspeakers are needed to achieve
appropriate acoustic output levels, EAW recommends amplifiers rated at twice the loudspeaker’s published
power ratings. This provides peak power capability 6 dB above the specified power handling without
exceeding the transducer’s thermal limits. This assumes that the audio signals will have peak to average
ratios in excess of 6 dB, which is usually, but not always, true. Under this condition, the thermal limits are
unlikely to be exceeded. This is consistent with the EAW’s power testing parameters. However, this
recommendation does NOT guarantee trouble-free operation. That is the next issue.
5.7.3 Operating
Limits
It is the responsibility of the audio system operator to operate the system properly and within its
capabilities. This is the only way to ensure that loudspeakers are not stressed beyond their limits to the
point of damage or failure.
WARNING: The power amplifier sizes recommended by the above rule of thumb are capable of continuous
output levels that can cause damage to or failure of the transducers. Exercise caution in operation to avoid
exceeding both the maximum RMS and peak voltage ratings listed in the Power Ratings section above.
5.8 INPUT CONNECTIONS
5.8.1 KF730 Input Connections
There are two Neutrik NL4MP connectors on the rear of each KF730. The connectors mate with Neutrik
NL4FC in-line cable connectors.
KF730 INPUT NL4 (each of two)
PIN 1- LF-
PIN 1+ LF+
PIN 2-
MF/HF-
PIN 2+ MF/HF+
1. Use as the input to the KF730
2. Use the second connector to loop the LF and MF/HF signals to the next KF730.
5.8.2 SB730
Connections
There are three Neutrik NL4MP and one NL8MP connectors on the rear of each SB730. The connectors
mate, respectively, with Neutrik NL4FC and NL8FC in-line cable connectors.
SUB INPUT/OUTPUT NL4MP (each of two)
PIN 1- SB730 SUB 1-
PIN 1+ SB730 SUB 1+
PIN 2- SB730 SUB 2-
PIN 2+ SB730 SUB 2+
1. Use as the input to the SB730.
2. Use the second connector to loop SUB signals to additional SB730s.