JBL SUB300 Service Manual

Also see for XTi SUB 300: Manual Service manual

Contents

8DOLBY PRO LOGIC* (NON-DIGITAL) – LINE LEVELUse this installation methodfor Dolby Pro Logic applica-tions (not Dolby Digital, DTSor other digital processing),where the receiver/proces-sor is equipped with a sub-woofer output, or a volume-controlled preamp (line-)level output:Use RCA-type interconnectsto connect the line-levelsubwoofer outputs on yourreceiver or amplifier to theline-level inputs on the sub-woofer. IMPORTANT: Do notuse the LFE input on the sub-woofer with Dolby Pro Logicprocessors.NOTE: If your receiver oramplifier only has one sub-woofer output jack, then youwill need to use a Y-connector(not included). Plug the maleend of the Y-connector intoyour receiver or amplifier’ssubwoofer output jack, andconnect each of the twofemale ends to separateRCA-type interconnects.Finally, plug the RCA-typeinterconnects into the line-level inputs on the sub-woofer.Connect each speaker tothe corresponding speakerterminals on your receiveror amplifier.Make sure your receiver orprocessor is correctly con-figured to indicate that thesubwoofer is “On.”Note for advanced users: Ifyour receiver/processor hasa built-in low-pass crossoverfilter for the subwoofer out-put, you may use the LFEinput to bypass the sub-woofer’s internal crossover.Use this installation methodfor Dolby Digital, DTS orother digital surroundprocessors:Use the line-level input jackmarked “LFE” for the Low-Frequency Effects channel.Connect this jack to the LFEoutput or subwoofer outputon your receiver or amplifier.Connect each speaker to thecorresponding speakerterminals on your receiveror amplifier.Make sure that you haveconfigured your surroundsound processor for “Sub-woofer On.” Also configureyour receiver for 5.1-, 6.1-or 7.1-channel operation asappropriate. The front left,front right, center and rearspeakers should all be set to“Small.” If your receiverallows you to set thecrossover frequencybetween the subwoofer andthe main speakers, select100Hz or the setting that is theclosest frequency below it.DOLBY* DIGITAL OR DTS®(OR OTHER DIGITAL SURROUND MODE) CONNECTIONLINELEVELINLFE LRLFE OUTSUBWOOFERRECEIVER– +– +– +– +– +– +– +– +– +ReceiverSubwooferOutLeftFrontLeftSurround– +RightFrontRightSurroundSubwooferR LCenterSurround BackLeftLine-Level InRight SurroundRight FrontLeft SurroundLeft Front CenterRL– +Surround BackLeft– +– +Surround BackRight– +Surround BackRightSUB300 (SCS300.7sys)5