Bose ControlSpace SP-24 User's Guide download pdf (Page 34)

Page 34 Installation and Operating Guide English

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Troubleshooting

Problem Possible Solution

No or intermittent power • Turn on power.

• Verify that the power cord is securely connected to the unit and power outlet.

• Verify that the power outlet and power extension cords (if used) are functional.

• Try connecting the SP-24 sound processor to a different power circuit.

Power is on, but low or no sound • Make sure the source device is turned on.

• Check that the cables from the source to the SP-24 sound processor are fully connected

and that the cables are functional.

• Check that the cables from the SP-24 sound processor to the ampliﬁer or powered

loudspeaker are fully connected and that the cables are functional.

• Check that the ampliﬁer or powered loudspeaker is on or that the ampliﬁer is correctly

connected to the loudspeaker.

• Verify that there is an input signal from the source. The Audio Input signal indicator on the

front of the SP-24 sound processor should show green.

• If connected to the SP-24 Editor software, ensure that all parameters, especially Input/

Output Gain blocks, Router blocks, and Mute controls are all set correctly.

• If setup was done from the front panel interface, check loudspeaker Preset or Custom

Scene.

• Check Input/Output gain values via the Utility Menu.

• Check Input levels via Utility Menu.

Sound is distorted • Verify that the Input Clip indicators are not lit (red). If an LED is red, change the Max Input

Level setting and/or Input Gain to better match source output level.

• If Max Input Level is set to 18 dBu and still Clip results, reduce the source Output level by

reducing Output Gain from the source or apply an inline attenuator device (pad).

• If the SP-24 sound processor is not showing Clip, reduce the Output Gain.

• Use the SP-24 Editor software to gain full control and visibility to Input and Output levels.

Adjust for optimal gain staging using the meters.

• Verify that the loudspeakers are not overdriven or damaged by the ampliﬁer.

Unnatural sound • Verify that the correct Bose

loudspeaker EQ is selected.

• Check that Output connections are wired to the correct loudspeaker channel as selected in

a Preset or Custom Scene.

• In the SP-24 Editor software, check the Limiter settings.

• In the SP-24 Editor software, check that the output polarity controls (Output Gain block)

are set the same for loudspeakers in the same system.

• Verify that the polarity of the signal chain is correct (input cabling, output cabling, ampliﬁer

output channels to loudspeaker).

Poor signal to noise performance

(hiss)

• Set the Max Input Level parameter for 18 dBu. Ensure source device level is ideally

delivering a nominal 0 dBu signal.

• Set the Input Gain parameter for each input channel so that the Max Input Level is just

under clip level.

• Using the SP-24 Editor software, adjust the Limiter and Output Gain blocks for optimal

output levels so they match the input signal capabilities of the connected ampliﬁer or

powered loudspeaker. (Example: An ampliﬁer capable of 18 dBu input should receive peak

signals from the SP-24 sound processor as close to 18 dBu as possible.)

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Bose ControlSpace SP-24 User's Guide Page 34

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