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ENGLISH FRANÇAIS
DEUTSCH
ESPAÑOL
ITALIANO
PORTUGUÊS
SVENSKA
PROBLEM
NO SOUND
NO SOUND ON ONE CHANNEL
NO SOUND ON SURROUND CHANNELS
NO SOUND ON CENTER CHANNEL
WEAK BASS/ DIFFUSE STEREO IMAGE
TEMPORARILY SWITCHES TO STANDBY, THEN
SWITCHES BACK ON AUTOMATICALLY
CAUSE
• Power AC lead unplugged or power not
switched on
• Speaker not properly connected or damaged.
• Input lead disconnected or damaged
• No surround mode selected
• Mono sound source
• Speakers not properly connected
• Surround volume level too low
• Speaker not connected properly
• Center volume level set too low
• Speakers wired out of phase
• Amplifier is running too hot
SOLUTION
• Check if AC lead is plugged in and power
switched on
• Check connections and speakers
• Check leads and connections
• Select a Surround Mode
• Test system with Stereo or Dolby Surround
material
• Check speakers and connections
• Increase surround volume level
• Check speaker and connection
• Increase center volume level
• Check connections to all speakers in the system
• Let the amplifier cool down
• Remove the excessive load condition
• Speakers must be greater than 4 Ohms nominal
TROUBLESHOOTING
SPECIFICATIONS
AMPLIFIER SECTION
CONTINUOUS AVERAGE POWER OUTPUT > 7 x 140 W (21.5 dBW)
INTO 8 OHMS OR 4 OHMS
(Minimum power per channel, 20 Hz - 20 kHz, all seven channels driven, with no more than rated distortion)
Rated Distortion < 0.03%
(THD 20 Hz - 20 kHz)
Clipping power > 170 W (22.3 dBW)
(Maximum continuous power per channel, all seven channels driven)
IHF DYNAMIC POWER
(Maximum short term power per channel)
8 ohms: > 230 W (24 dBW)
4 ohms: >
390 W (26 dBW)
2 ohms: >
450 W (26.5 dBW)
Damping factor > 300
(Reference 8 ohms at 50Hz)
Input sensitivity (for rated output into 8 ohms) 1.1V
Voltage gain 29 dB
Frequency response 20 Hz - 20 kHz ±0.2 dB
- 3dB at 3 Hz and 100 kHz
Signal / Noise ratio, A-weighted > 96 dB ref. 1 W
> 125 dB ref. 140W
DIMENSIONS AND WEIGHTS
Net Weight 68 Ib (31kg)
Shipping Weight 72 Ib (33kg)
Dimension (W H D) Net 17.1 x 7.1 x 17.7”(435 x 180 x 450mm)
Gross* 17.1 x 7.7 x 19.5”(435 x 195 x 495mm)
*Gross dimensions include feet, volume knob, power button and extended speaker terminals.
Specifications are subject to change without notice. For updated documentation and features please log onto
www
.nadelectronics.com for the latest information about your T975.
T975 Aug2006.qxd 8/21/2006 11:15 AM Page 10