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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. NO USER-SERVICEABLE 
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

1. 

Read Instructions

 — Read all the safety and operating instructions before operating this product.

2. 

Retain Instructions

 — Retain safety and operating instructions for future reference.

3. 

Heed Warnings

 — Adhere to all warnings on the product and in the operating instructions.

4. 

Follow Instructions

 — Follow all operating and use instructions.

5.   

Cleaning

 — Unplug this product from the wall outlet before cleaning. Use a damp cloth for cleaning. 

Clean the outside of the product only.

6.   

Attachments

 — Do not use attachments that are not recommended by the product manufacturer; 

they may be hazardous.

7. 

Water and Moisture

 — Do not use this product near water.

8.   

Accessories

 — Do not place this product on an unstable cart or stand. The product may fall, causing 

bodily injury and damage to the product. A product and cart combination should be moved with care. 
Quick stops, excessive force, and uneven surfaces may cause the product and cart to overturn.

9.   

Ventilation

 — Slots and openings in the cabinet are provided for ventilation to ensure reliable opera-

tion of the product and to protect it from overheating. These openings must not be blocked or 
covered. This product should not be placed in a built-in installation such as a bookcase or rack unless 
proper ventilation is provided.

10.   

Power Sources

 — Operate this product only from the type of power source indicated on the label. 

If you are not sure of the type of power supply to your home, consult your dealer or local power 
company. This product is equipped with a three-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.   

Lightning

 — Unplug the unit from the wall outlet for added protection during a lightning storm 

and when it is left unattended and unused for long periods of time. This will prevent damage to the 
product due to lightning and power line surges.

13. 

Overloading

 — Do not overload wall outlets or extension cords. This can result in a fire or electric shock.

14.   

Inserting Objects into Unit

 — Never push objects of any kind into this product through any openings; 

they may touch dangerous voltage points or short out parts that could result in fire or electric shock.

15.   

Servicing

 — Do not attempt to repair or service this product yourself. Opening or removing covers may 

expose you to dangerous voltage and other hazards. Refer all servicing to qualified service personnel.

16.   

Damage Requiring Service

 — Unplug this product from the wall outlet and refer servicing to quali-

fied service personnel under the following conditions: 

a)

 If the power-supply cord or plug is damaged. 

b)

 If liquid has been spilled into the product. 

c)

 If the product has been exposed to rain or water. 

d)

 

If the product does not operate normally by following the operating instructions. 

e)

 If the product has 

been dropped or damaged in any way. 

f)

 If the product exhibits a distinct change in performance.

17.   

Replacement Parts

 — When replacement parts are required, be sure the service technician has used 

replacement parts specified by the manufacturer. Unauthorized substitutions may result in fire, elec-
tric shock, and other hazards.

19.   

Safety Check

 — Upon completion of any service or repairs to this product, ask the service technician 

to perform safety checks to determine that the product is in proper operating condition.

20. 

Wall or Ceiling Mounting

 — Mount the product to a wall or ceiling only as recommended.

21.   

Heat

 — The product should be situated away from heat sources such as radiators, heat registers, 

stoves, and other products (including amplifiers) that produce heat.

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Summary of Contents for 275

Page 1: ...Model 275 Two Channel Power Amplifier OWNER S GUIDE Model 275 Two Channel Amplifier A B Power M o d e l 2 7 5 T w o C h a n n e l A m p l i f i e r Protect Hi Temp L R...

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: ...High Pass Filter Switch 4 Speaker Connections 5 Bridging Switch Stereo Mono 5 Mono Input 6 Speaker Connections 6 Load Impedance Switch 6 Auto Turn On 6 Sensitivity Adjust Knob 8 Ground Switch 8 Front...

Page 4: ...thoroughly before you begin installation Unpacking Carefully unpack your Model 275 and these accessories Detachable AC power cord Trigger wire with a 2 5 mm sub mini plug at both ends Trigger wire ad...

Page 5: ...till develop around any heat producing equipment Therefore a ventilation fan is high ly recommended Allow a few inches of empty space on each side and above the unit and try to avoid crowding or stack...

Page 6: ...certified amplifier might play a bit louder because of its higher power output We recommend setting the 275 s R and L level controls to 3 o clock if you are driving it from a THX surround controller...

Page 7: ...peakers is another way the 275 will run cooler Note Autoformer type passive volume controls are highly reactive loads that are known to cause amplifier malfunction The 20 Hz or 40 Hz filter settings e...

Page 8: ...the mono power output is much higher than the sum of the L and R channel outputs for stereo operation Mono Input and Speaker Connections 1 Turn the unit off and remove the AC cord 2 Connect the single...

Page 9: ...s set to its 12V position the Model 275 is turned on and off with an external 9V to 12V voltage from your preamp or controller When the external volt age ceases the Model 275 will turn off immediately...

Page 10: ...gging in the 275 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 input jacks and it will rema...

Page 11: ...right away You can also turn it off by unplugging its AC power cord Auto Turn On switch in the Audio position turn off the preamplifier surround controller or system controller that drives your 275 Y...

Page 12: ...ires are secure at both ends Make sure the control preamp receiver is switched to the correct input If using Auto turn on increase the sensitivity of the audio trigger Is the Hi Temp or Protect or bot...

Page 13: ...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 14: ...at 2 828 V output IHF A weighted 84 dB at 2 828 V output unweighted Input Impedance 33 k Input Sensitivity 800 mV for full rated output Inter Channel Crosstalk 80 dB 1 kHz 72 dB 10 kHz 65 dB 20 kHz D...

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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