Parasound ZoneMaster 250, Owner'S Manual

Page 1: ...TM M M ZoneMaster Model 250 Universal Two Channel Sub Amplifier Owner s Manual ...

Page 2: ...ee prong grounding plug This plug will only fit into a grounding power outlet If you are unable to insert the plug into the outlet contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the grounding plug 11 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them 12 L...

Page 3: ...Parasound ZoneMaster 250 Owner s Manual Page 3 ...

Page 4: ... dealer invoice and store it inside the ZoneMaster 250 s carton If the ZoneMaster 250 should require warranty repair you will need its original carton and foam packing inserts to ship it Please do not throw away the carton or foam packing inserts Parasound ZoneMaster 250 Serial ____________________ Parasound Dealer ___________________________________ Parasound Dealer Phone Number _________________...

Page 5: ...Connections 9 Mono and Sub RCA Output Jacks 9 A and B Speaker Connections and Impedance 9 Bridged Output Switch 10 Mode Switch 10 Speaker Connections in Bridged Mode 11 Channel Level Controls and Uses 12 Turn On Options Audio Trigger or 12V Trigger 13 Front Panel Power Buttons and Display 14 Frequently Asked Questions and Troubleshooting 15 If You Require Assistance or Warranty Repair 16 Specifica...

Page 6: ...k or any other enclosed space You should never install the ZoneMaster 250 in an unventilated equipment cabinet or compartment because hot air will not exhaust adequately to prevent overheating Even a cabinet or enclosure whose front and back sides are open doesn t guarantee that air will circulate adequately pockets of intense heat can still develop around any heat producing equipment Allow a few ...

Page 7: ...ing Mexico as well as in Taiwan In some countries such as Brazil AC voltage varies by region Most other countries require setting this switch to 230V With the 230V setting the ZoneMaster 250 can operate safely with AC line voltages between 220V 240V Note A ZoneMaster 250 that has been damaged by connection to the incorrect AC voltage is not covered by the Parasound warranty AC Voltage Marking AC L...

Page 8: ...onal amplifiers Polarity Is Important You must be careful to maintain polarity between the host receiver or amplifier and the Model 250 Connect the terminals of the receiver to the terminals of the Model 250 s Speaker Level Input Connect the terminals of the receiver to the terminals of the Model 250 s Speaker Level Input If you do not maintain polarity then the Speaker Level Input will not functi...

Page 9: ...ly avoid the added expense complexity heat and power consumption of additional amplifiers The ability of the ZoneMaster 250 to drive two pair of speakers is credited to Parasound s 2 ohm stable high current design Typical applications for using both Speaker A and B outputs might include a large living room with four ceiling speakers Another use for the B speakers could be in a subzone like a bathr...

Page 10: ...outes the Left channel input to the Left channel speaker outputs and the Right channel input to the Right channel speaker outputs Mono The Mono setting combines the Left and Right channel inputs into a summed L R mono signal and routes it to both the Left and Right channel speaker outputs In the Mono mode you can connect two mono speakers to the A output one speaker connects to the L and L and the...

Page 11: ...econd speaker on the B output Use only the Right input jack Each speaker must be 8 ohms Both speaker will play the same mono signal Both speaker output A and speaker output B use the same connection method even though the rear panel only shows the bridged polarity under the B output You can connect two mono 8 ohm speakers one to the A and one to the B bridged output terminals but be aware that the...

Page 12: ...Level controls until the volume level in the room or zone is as high as you or the home owner might ever want it to be This is the most appropriate setting for the Level controls because it will improve sound quality and prevent the home owner from over driving the speakers Improving the Audio Trigger Turn On for Listening at Very Low Volume You might prefer to listen to music in some zones at an ...

Page 13: ...rn on at an extremely low volume level simply turn down both Level control knobs Start with the level controls at 12 o clock and see if the volume level is low enough when the amp turns on 12V Trigger In When the Turn On Options switch is set to its 12V position the Model 250 is turned on and off only with an external 9 V to 12 V voltage from your preamp AV Receiver or whole house controller When ...

Page 14: ...lways illuminate the same color Causes for the front panel indicators to illuminate red are The speaker outputs for one or both channels are short circuited negative to positive either at the amplifier at the speaker or somewhere along the speaker wire The negative speaker terminals have been combined L to R Too many speakers are connected and the combined impedance is below 2 ohms Or below 4 ohms...

Page 15: ...hm speakers are attached the channel sees only 2 ohms The amp may have overheated and will not resume operation until it cools down Ensure that you have provided adequate ventilation especially when driving low impedance loads See page 13 for more details Why is there no sound when using the Speaker Level Input Ensure that you have connected the correct polarity at both ends of the speaker wire Tr...

Page 16: ...are outside the Warranty Unit is not eligible for repair under the terms of the Parasound warranty if 1 Unit was not purchased from a Parasound Authorized Dealer 2 You do not have the original bill of sale or sales receipt from a Parasound Authorized Dealer 3 You are not the original owner The Parasound warranty is not transferable 4 Unit s serial number was removed modified or defaced 5 Unit show...

Page 17: ...mv Full output 50 Watts 8Ω Total gain 29dB Level controls set to Maximum S N Ratio 112dB input shorted IHF A weighted DC Trigger Requirements 9Vdc to 12Vdc 5mA Audio Trigger Requirements 2mV audio signal 5 8 minutes turn off delay AC Power Requirement 250 Watts maximum 15 Watts typical music playing 7 5 Watts idle no music playing 0 5 Watts in standby 110 130 VAC 60 Hz or 220 255 VAC 50 Hz Note AC...

Page 18: ..._____________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ __________________________...

Page 19: ...Parasound ZoneMaster 250 Owner s Manual Page 19 ...

Page 20: ...Parasound ZoneMaster 250 Owner s Manual Page 20 Parasound Products Inc 2250 McKinnon Ave San Francisco CA 94124 Customer Service 415 397 7100 www parasound com ...