Adcom GFR-700 Technical Specifications, Preamplifier Analog Section, Preamplifier Digital Section

Technical Specifications

PREAMPLIFIER ANALOG SECTION

Input Impedance		47k
Output Impedance (Main-RCA)		<600 Ohm
Rated Input		1.0Vrms
Maximum Input (@ 4Vrms Input Sens.)		4.1Vrms
Rated Output (100k load)		2.0Vrms
Minimum Load		5k
Maximum Output		8Vrms
Volume & Trim Range (relative to 0dB Trim)
• Main	-80dB to +18dB (0.5dB res)
• Main Trim	-10dB to +10dB (1.0dB res)
• Main Input Sens./Input		1V/2V/4V
• Room 2	-65dB to +0dB (1.0dB res)
• Room 2 Trim	-8dB to +8db (1.0dB res)
• Room 2 Gain/Input ...	+0dB to +6dB (2.0dB res)
Channel Separation (at 1kHz)		(>65dB)
Frequency Response
• Analog DSP Input	20Hz to 20kHz +0/-0.2dB

•Analog Ext7.1 Input . 20Hz to 100kHz +0/-0.2dB THD+N (@ Rated Input & Output)

• Analog DSP Input	0.007% (20kHz Low Pass)
• Analog Ext7.1 Input ...	0.006% (80kHz Low Pass)
S/N Ratio (ref. 2.0Vrms A-weighted)
• Analog - DSP Input	93dB
• Analog - Ext 7.1 Input	100dB

PREAMPLIFIER DIGITAL SECTION

Frequency Response
• Digital Input	10Hz to 22kHz +0/-0.2dB
THD+N (@ Rated Input & Output)
• Digital Input	0.009% (A-weighted)
S/N Ratio (ref. 2.0Vrms A-weighted)
• Digital Input		99dB
Bass Management (Front/Center/Surround/Sub)
• High-Pass Slope	Crossover Frequency
• (Small Spkr Setting)....	12dB/octave (2nd order)
(Adj. 40/60/80/100/120/150Hz)
• Low-Pass Slope (Sub) ...	24dB/octave (4th order)
(Adj. 40/60/80/100/120/150Hz)
• Delay Mgmt (Feet or Meters relative 1ms/ft)
• Front/Center/Surr/Surr Back/Sub		........ 0-20 ft
• Lip Sync Delay		0-169mS

FM TUNER SECTION

Sensitivity

• 30dB S/N	6dBu typ.
S/N Ratio
• Mono	65dB typ.
• Stereo	55dB typ.
Distortion
• Mono	0.3% typ.
• Stereo	0.5% typ.
Stereo Separation	35dB typ.
Adjacent Channel Selectivity	50dB typ.
Frequency Response	50Hz to 15kHz +1/-3dB

AMPLIFIER SECTION

Frequency Response	10Hz to 50kHz +0/-3db
THD+N		0.009%
S/N Ratio		93dB
Power Output (x # = number of channels driven)
• EIA/CEA 490-A (8 Ohm x 5)		145watt
• EIA/CEA 490-A (4 Ohm x 5)		265watt
• RMS (8 Ohm x 5)		109watt
• RMS (4 Ohm x 5)		148watt
• RMS (8 Ohm x 2)		150watt
• RMS (4 Ohm x 2)		226watt
Damping Factor
• RMS (8 Ohm x 1) @ 50Hz 1% THD		102
• RMS (4 Ohm x 1) @ 50Hz 1% THD		51

VIDEO SECTION

Impedance (Input/Output)	75 Ohm
Bandwidth
• Composite & S-Video	6MHz -3dB
• Component	200MHz -3dB
Transcoding
• Composite/S-Video/Component ....	480i & 576i
Switching
• HD Component (Auto Bypass)	480p-1080p
• HDMI (Switching Video/Audio/
DDC/HPD)	480i-1080p

GENERAL

Supply Voltage (Switchable)	.............. 120vAC-60Hz/
	230vAC-50Hz
Power Consumption	1200watt maximum
Dimensions
• Width	17 inches (431.8mm)
• Rack Height	7 inches (177.8mm)
• Full Height	7.5 inches (190.5mm)
• Depth of Chassis	15.5 inches (393.7mm)
• Full Depth	19 inches (482.6mm)
Unit Weight	50 lbs. (22.7kg)
Trigger Outputs
• Main	50mA @ 12vDC
• Room 2	50mA @ 12vDC
IR Inputs
• Main	3.5mm T/R
• Room 2	3.5mm T/R
RS232 Control	9600 baud/8 - N-1/
	Flow Control = Hardware

Specifications are subject to change without notice.

Chapter 5 - Help

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