Yamaha XS350 Owner's Manual

POWER AMPLIFIERXS350XS250Owner’s ManualEPOWERPOWER AMPLIFIER XS SERIESPOWERSIGNAL CLIP SIGNALCLIPPROTECTIONCH A CH BON OFF350

10Rack Mounting Mounting in an EIA standard rackIf multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps

11 Portable Rack MountingThis unit uses a forced cooling system in which air comes in through the front opening and goes out from the sidesand rear.

12Specifications General SpecificationsXS250 XS350Power Output Level (Rated Power) 8Ω/STEREO 170 W + 170 W 230 W + 230 W20 Hz~20 kHz 4Ω/STEREO 250 W

13 Block DiagramProtectorCLIPCLIPMODEOFFLOW CUTSUB WOOFEROFFLOW CUT(PARALLEL)(BRIDGE)(PARALLEL)(BRIDGE)INPUTINPUTCHANNEL BCHANNEL ACHANNEL BCHANNEL A

14TroubleshootingThe following table lists the main causes of abnormal operation and the corrective measures required, as well as theprotective circui

YAMAHA CORPORATIONV352950 R1 1 IP 16 Pro Audio Division, #18/3P.O. Box 3, Hamamatsu, 430-8651, JapanNP Printed in Taiwan

2IntroductionThank you for purchasing a Yamaha XS350, XS250 series power amplifier.This series of audio amps was developed from Yamaha's wealth o

3PrecautionsContentsControls and Functions ... 4Front Panel...

4Controls and Functions Front PanelPOWERPOWERSIGNAL CLIP SIGNALCLIPPROTECTIONCH A CH BON OFF34211 POWER switch and indicatorThis is the main POWER

5 Rear PanelB-2 CHANNEL A-28-16Ω (BRIDGE)(–) (+)4-8Ω/CHANNEL (STEREO)B-1 CHANNEL A-18-16Ω (BRIDGE)(–)– –+ +(+)4-8Ω/CHAN

64 SPEAKERS terminalsTwo types of speaker output terminals:Binding post (Channel A-1, B-1) and barrier strip(Channel A-2, B-2) are available.These par

7 Speaker ImpedanceIn STEREO and PARALLEL modes, the minimum load (i.e., speaker) impedance is 4Ω. In BRIDGE mode it is 8Ω.Make sure that the impedan

8Using the barrier strip or terminal postsSTEREO mode connections:MODESTEREOPARALLELBRIDGESet to STEREOPARALLEL mode connections:MODESTEREOPARALLELBRI

9Caution for Speaker Connection1. Turn off the POWER switch.2. Remove the cover attachment screws and remove theprotective cover from the speaker term