Samson SD8 Owner's Manual

Contents

Samson SD8 Owner's Manual Manual pdf 15 page image

12Setting up your SD8 is a simple procedure which takes only a few minutes:1. Remove all packing materials (save them in case of need for future service)and decide where the SD8 is to be physically placed—if desired, remove thecarrying handle and install the supplied rack ears so that it can be mounted inany standard 19" rack (it requires four rack spaces). Be careful when handlingthe SD8—the rear heat sink fins and side rack panels have sharp edges.Make sure that the rear heat sink fins are unobstructed and that there is goodventilation around the entire unit. If the SD8 is mounted in a rack that containsmultiple amplifiers, we recommend that you avoid potential overheatingproblems by using spacer panels to ensure that the amps are not directly on topof one another—remember, heat rises!2. Before even plugging the SD8 into an AC socket, begin by making its speakerconnections. It is never a good idea to power up any amplifier that is notconnected to loudspeakers. Any loudspeakers with a minimum impedance loadof 4 ohms (that is, 4 ohms or greater) can be used, but we recommend the useof 4 ohm speakers for long-term usage. In order to ensure correct phasecorrelation, be sure that the connection from the tip of the SD8 speaker jackgoes to the “+” (hot) input of your loudspeaker, and that the sleeve of the SD8speaker jack is connected to the “-” (ground) input of your loudspeaker.3. Next, make the signal input connections to the mic or line inputs of thevarious channels. WARNING: Do not connect a channel’s line input if youalready have something connected to its microphone input, or vice versa; eachchannel is designed to accept only one source or the other.4. Turn all channel Trim and Level controls as well as the Main Level controlfully counterclockwise, to their “∞” setting. Set the rear-panel Phantom switchto its “off” (out) position unless you are absolutely certain that all connectedmicrophones require 48 volt phantom power; if so, set the Phantom switch toits “on” (in) position.5. Plug the unit into any grounded AC socket using the supplied IEC cord.Because of the special relay protection circuitry built into the SD8, you can evenplug it into the same power strip that other audio devices are connected to.You can then turn on all devices at once with the single power strip on-off switch,with no danger of damaging connected speakers by generating “thumps.”6. Press the rear panel Power switch in order to turn on the unit. The ProtectionLED will go on for approximately five seconds, and then switch off (you’ll hear aclick when it does).Setting Up and Using the SD8SPEAKER OUTR MINIMUM 4Ω L