Protect 1 2 3 4 5 Hi Temp Power Model 5125 Five Channel Amplifier Five Channel Amplifier OWNER’S GUIDE
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of “dangerous voltage” inside the product that may constitute a risk of electric shock. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the product. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER.
TABLE OF CONTENTS Introduction . AC Voltage . 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ventilation Requirements . Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 INTRODUCTION Congratulations and thank you for your purchase of this precision Parasound audio component. The Parasound Model 5125 is the latest generation of popular and proven audio power amplifiers dating back to 1981. It has been designed for a wide variety of applications, establishing a new standard for audio performance, user-friendliness and utility in custom installations.
AC VOLTAGE, INSTALLATION AND RACK MOUNTING 115v - 230v AC Voltage 110-120V is the typical AC voltage in North America; most other countries supply 220-240V. The 5125 is internally wired for either 115V or 230V, according to where you purchased it and the voltage that is marked on its carton. If you plug a unit that is wired for 115V into a 230V outlet it can damage it. Note: Only a qualified repair technician should make AC voltage conversions.
4 REAR PANEL CONNECTIONS AND CONTROLS Connection Precautions Disconnect the AC cord before making or changing any input, trigger, or speaker wire connections. Make sure there is no strain or tension on any wires that could cause them to pull loose. Audio In Jacks Connect the cables from your preamplifier or multi-room controller’s output jacks to the Model 5125’s channel 1-5 audio Input jacks. Gain is 29, fixed at THX Ultra2 Reference level, 1V input = 28.28V output.
REAR PANEL CONNECTIONS AND CONTROLS continued 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.
6 REAR PANEL CONNECTIONS AND CONTROLS continued Automatic Turn On and Off Auto Turn On Switch For convenience, there are two ways the Model 5125 can be triggered to turn on automatically. • When a suitable voltage is applied to its 12V In (input) jack. • When an audio signal is present at the channels 1 and 2 audio Input jacks. When either automatic turn on is selected the Model 5125 front panel Power button is disabled so that on/off is determined solely by the triggering preamp or system controller.
REAR PANEL CONNECTIONS AND CONTROLS continued 12V Out Jack The Trigger Out jack lets you loop or “daisy-chain” the incoming trigger voltage to an additional Model 5125 or other component. Note: The Model 5125 trigger circuit draws a negligible 15 mA from the controller. The total load on your controller’s trigger output(s) is the sum of the trigger current drawn by each of the components you’ve looped together. Controllers can typically supply 150 mA at their trigger outputs.
8 FRONT PANEL CONTROLS AND INDICATORS Protect 1 2 3 4 5 Hi Temp Power Power Button Press the Power button once to turn the Model 5125 on, press it again to turn it off. The Power button is inoperative when the Auto Turn On switch is set to Audio or 12V. Protect Indicator The Protect indicator will illuminate red if the Model 5125 experiences an external fault condition and the unit will stop playing. This prevents possible damage to the unit from continued operation.
PROBLEMS AND REMEDIES Maintaining Your Model 5125 Your Parasound Model 5125 power amplifier requires no periodic maintenance and functions at its best when providing you with many hours of enjoyment. It has no user-serviceable parts inside. To avoid the risk of electric shock, do not remove its top cover. The exterior can be cleaned with a soft cloth pre-moistened only with a few drops of water or glass cleaner. No sound • Check that AC is live.
10 IF YOU REQUIRE ASSISTANCE Call your Parasound dealer first. If the dealer can’t help you with your problem we encourage you to call Parasound’s Technical Service Department, toll-free at 1-866-770-8324, Monday - Friday, 8am - 4pm Pacific time. We can suggest other diagnostic tests you can easily perform.
PARASOUND MODEL 5125 SPECIFICATIONS Continuous RMS Power Output 20 Hz – 20 kHz, Five Channels Driven Inter-Channel Crosstalk 85 dB, 1 kHz 125 watts x 5, 8 Ω 73 dB, 10 kHz 185 watts x 5, 4 Ω 67 dB, 20 kHz Current Capacity 35 amps peak per channel Frequency Response 20 Hz - 50 kHz, +0/-3 dB, 1 watt Dynamic Headroom 1.3 dB Total Harmonic Distortion 0.025% at full rated output 0.02% at average listening levels IM Distortion 0.
12 CONNECTION AND SETUP NOTES Notes:
CONNECTION AND SETUP NOTES Notes: 13
Parasound Products, Inc., 2250 McKinnon Avenue, San Francisco, CA 94124 Customer Service 415-397-7100 / Fax 415-397-0144 Technical Dept. service@parasound.com www.parasound.com rev 0.92 ©2010 Parasound Products, Inc.
