User manual GENELEC S30D

[. . . ] Special attention is paid to electronics design to obtain the best possible subjective sound quality. The output impedance of the woofer amplifier is negative to improve acoustic transient response. Drivers and amplifiers are also protected from thermal overload. 3. Integrated construction As the digital interface and amplifiers are built into the speaker enclosure, the only connections required are the mains supply and the digital (or analog) input signal, making the S30D very easy to set up and use. [. . . ] This compensates for differing amounts of headroom on the digital signal and enables the speaker to work at its maximum SPL if required. The "DIGITAL LEVEL" can be set to 112, 100 or 88 dB SPL at 1m with a full scale sine wave digital signal. How to set up for digital signals Connect a digital audio interface cable to your digital audio source. You can identify the right connector on your audio source by looking for the words "Digital Output" or "AES/EBU OUT". Make absolutely sure that the connectors are carrying the AES/EBU formatted digital audio signal. NEVER connect an analog signal cable to S30D's digital input connector!Connect the digital signal cable to the "DIGITAL INPUT" female XLR connector on a S30D (see figure 2). Next connect a second signal cable from speaker's "DIGITAL THRU" male XLR connector to the "DIGITAL INPUT" connector of another S30D as shown in Figure 3 below. You can daisy-chain practically any number of S30D's in this manner. Figure 4 overleaf shows an example of a cabling scheme for a digital 5. 1 channel console. Use the "CHANNEL SELECT" switches to select loudspeaker mode. Any S30D in the chain can be designated The "LEVEL CONTROL" trimmer adjusts the level of both the digital and analog signals. Use this trimmer to give the digital level an extra 0 to -12 dB attenuation in addition to the "DIGITAL LEVEL" switches. Combining these makes it possible to adjust the maximum SPL at 1m for a full scale sinusoidal digital signal anywhere between 112 dB and 76 dB. Switch on the mains power and feed an AES/EBU digital signal to the sys- Figure 2: S30D backpanel Figure 1: S30D outer dimensions, with the reference axis located at the tweeter axis. Figure 3. Using the "DIGITAL IN" and "DIGITAL THRU" connectors in a digital setup tem. When the S30D detects a digital signal it switches automatically to the digital input, and the mode LED turns yellow. The S30D will switch back to the analog input if significant errors are detected in the digital audio or the digital signal is not present. If the LED turns red, it indicates an error in the digital signal. How to set up for analog signals Turn all mains switches off and remove the digital audio cables. Run balanced XLR cables from your line level analog audio source to the "ANALOG INPUT" XLR connector on each S30D unit. Switch on the power and observe that the mode indicator LEDs should turn green. The output levels can be adjusted at the "LEVEL CONTROL" trimmer. Figure 4. Cabling scheme for a 5. 1 channel digital console Setting tone controls The response of the system may have to be adjusted to match the acoustic environment. [. . . ] · Do not insert any objects through the bass reflex port(s) on the face of the unit, as this may damage the drive units inside the loudspeaker. · Do not run an analog audio signal to the digital input XLR connector. Doing so may overload your audio equipment output and cause them permanent damage. Tr 7. Troubleshooting To help you solve any problems, here are a few pointers: · Make sure that your audio signal source has been set to transmit the audio to the AES/ EBU output. [. . . ]