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It also assures the best results when you’re listening to pure stereo.

   If the 5125 is more powerful than the two channel amplifier, we recommend the preceding 5.1 

channel connections for the 5125. Use the two channel amplifier for the surround back channels. 
For example, if your two channel amplifier is the Parasound Model 275 rated at 75 watts/
channel, use the 275 for the surround back channels and your 5125 for the other five channels.

  If the two channel amplifier is of high quality, with at least the same power rating as the 5125, 

we recommend that you use the two channel amplifier for the front left and right channels, and 
the following connections for the 5125.
For example, you might prefer a Parasound Model 2125 to drive your left and right speakers, 
and use your 5125 for the other five channels. Even with the same 125w/channel power rating, 
the 2125 has a performance edge over the 5125, with superior channel separation and lower 
channel-channel crosstalk.

 

5125 Input jack  

5125 Speaker Terminal

 

Connects to Surround Controller’s Output: 

Connects to:

Channel 1 Center, or Ctr channel

Center speaker

Channel 2  RS or Right surround channel

Right surround speaker

Channel 3  RB or Right surround back channel

Right back speaker

Channel 4  LB or Left surround back channel 

Left back speaker

Channel 5  LS or Left Surround channel

Left surround speaker

Note: 

If you elect this connection arrangement you will probably need to use the Auto Turn On 

12V option because none of these channels supplies adequate levels for the 5125’s Audio sensing.

Each – and + speaker terminal will accept bare speaker wire up to AWG 12, a wire terminated 
with a 

1

4

 spade lug, or with a single banana plug; dual banana plugs which are 

3

4

 (19mm) apart 

may be used for each speaker.
If you use bare wires, remove only enough insulation, about 

1

2

 (12mm) for each exposed bare 

wire to insert through the small hole in the side of the binding post. Before inserting a bare 
wire, twist the strands tightly between your fingers to prevent strays that might touch the chas-
sis or another terminal and cause a short circuit. If you have soldering experience you may want 
to “tin” the stripped bare wire with solder for a cleaner termination and to prevent the wire 
from oxidizing.

Correct Speaker Polarity is Important

As you connect the speaker wires, you can see that the insulation on one of the two wires in 
each pair has either printing or a raised ridge. The marking lets you know which wire you con-
nected to the positive speaker terminal at its other end.
Make sure the + wire you attach to each Model 5125 + speaker terminal is attached to the + 
terminal of the speaker for that channel.

 

REAR PANEL CONNECTIONS AND CONTROLS continued

5

Summary of Contents for 5125

Page 1: ...Model 5125 Five Channel Amplifier Power Protect Hi Temp 2 3 1 4 5 Model 5125 Five Channel Amplifier OWNER S GUIDE...

Page 2: ...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 ground...

Page 3: ...2 AC Voltage 3 Ventilation Requirements 3 Rack Mounting 3 Rear Panel Connections and Controls 4 Front Panel Controls and Indicators 8 Typical Problems and Remedies 9 If You Require Assistance 10 Warr...

Page 4: ...al thoroughly before you begin installation Unpacking Carefully unpack your Model 5125 and these accessories Detachable AC power cord Trigger wire with a 2 5 mm sub mini plug at each end Trigger wire...

Page 5: ...ir won t often circulate adequately in a cabinet or enclosure whose front and back sides are open pockets of intense heat can still develop around any heat producing equipment Therefore a ventilation...

Page 6: ...sense Even if you always listen in a surround mode the center and surround channel sound levels aren t high enough on a consistent basis for the auto turn on audio sensing 5 1 Channel Connections We r...

Page 7: ...Left surround back channel Left back speaker Channel 5 LS or Left Surround channel Left surround speaker Note If you elect this connection arrangement you will probably need to use the Auto Turn On 12...

Page 8: ...Input jacks for Channels 1 and 2 After the audio sig nals cease the Model 5125 remains on for about ten minutes This prevents unintended turn off during pauses in your music or movies The Audio posit...

Page 9: ...the Model 5125 Note Plugging in the 5125 s AC cord for the first time will usually create an internal power surge that false triggers its Audio auto turn on even if there s no audio signal at its inpu...

Page 10: ...ur 5125 You can also unplug the 5125 s AC power cord Note It requires approximately 15 minutes after removing the audio source before the 5125 turns itself off If you don t want to wait and you have a...

Page 11: ...to Turn On switch Doesn t turn on with the Auto Turn On Audio Try the 12V trigger instead If using Auto turn on audio connect channels 1 and 2 to the L and R controller outputs If using Auto turn on a...

Page 12: ...Dealer or Parasound Authorized Reseller Units Will Be Refused by Parasound Under the Following Conditions 1 Unit was sent without the Parasound assigned RA number marked on the carton 2 Unit was sent...

Page 13: ...io 1 2 mV 12 V adjustable 15 minute turn off delay AC Power Requirement 110 120 V 220 240 V 50 60 Hz 3 watts standby 1600 watts full output Dimensions 171 4 Wide 181 2 Deep with connectors 6 High with...

Page 14: ...Notes CONNECTION AND SETUP NOTES 12...

Page 15: ...Notes CONNECTION AND SETUP NOTES 13...

Page 16: ...why Parasound has been a quality and value favorite of magazine reviewers sound professionals and listeners like you since we were founded in 1981 rev 0 91 2005 Parasound Products Inc Parasound Produ...

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