What to do if Neumann Subwoofer KH 750 DSP back panel LEDs are off and no sound is heard?
If the back panel LEDs are off and no sound is heard from your Neumann KH 750 DSP Subwoofer, there are two possible reasons: * The main fuse may have blown. In this case, have the product checked by an authorized Neumann service partner. * The KH 750 DSP might be in standby mode. Try waking it up by playing some audio into it.
Why does my Neumann Subwoofer KH 750 DSP have hum or buzz with analog audio cable?
Humming or buzzing from your Neumann KH 750 DSP Subwoofer when using an analog audio cable can be due to several reasons: * A defective cable. * Bad cabling. * A ground loop in the installation. * The audio source level being too low. To resolve this, check all cabling, avoid running signal cables parallel to mains cables, use balanced cables, utilize the ground lift switch, increase the signal levels from your source, and reduce the levels on your subwoofer and loudspeakers.
What to do if Neumann Subwoofer KH 750 DSP output level suddenly reduces?
If the output level of your Neumann Subwoofer KH 750 DSP suddenly reduces, the POWER ON LED H changes from green to red, it indicates that the temperature of the power amplifier is too high. Ensure sufficient ventilation and/or reduce the input signal level, or add extra subwoofers to increase LF headroom. The POWER ON LED H will light up green and the output level reduction will be canceled when the temperature has dropped again.
What to do if Neumann Subwoofer KH 750 DSP power LED lights up red?
If the POWER ON LED H on your Neumann Subwoofer KH 750 DSP lights up red in time with low-frequency input signals, it means the signal level is too high, activating the protection system. Reduce the signal level to resolve this issue.
Why does Neumann Subwoofer KH 750 DSP sound thin?
If your Neumann Subwoofer KH 750 DSP sounds very “thin” in the bass, with a very low low-frequency response, it may be due to incorrect wiring in the analog audio cable. Check the cabling, especially if unbalanced cabling has been used.
Why Neumann Subwoofer KH 750 DSP logo does not light up?
The logo on the Neumann Subwoofer KH 750 DSP does not light up because there is no LED behind the logo. This is normal.
Explanation of gain, level, low cut, phase, and mode control elements.
Essential safety warnings and guidelines for product installation.
Overview of various methods for connecting the subwoofer to audio sources.
Detailed instructions for connecting analog and digital audio signals.
Cabling examples for stereo and multichannel loudspeaker setups.
Overview of methods for calibrating the subwoofer's performance.
Detailed steps for calibrating frequency response, level, and phase.
Activating and configuring the subwoofer's bass management features.
Controlling bass management remotely and setting subwoofer replay levels.
Identifies common problems and provides solutions.
General| Acoustical Principle | Bass reflex |
|---|---|
| Type | Active subwoofer |
| Driver Size | 10" (250 mm) |
| Analog Inputs | 2 x XLR |
| Analog Outputs | 2 x XLR |
| Digital Inputs/Outputs | AES/EBU |
| Internal Processing | DSP |
| Phase | 0° / 180° |
| DSP Features | EQ, delay |
| Maximum SPL | ≥ 110 dB (peak at 1 m) |
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