Specifications & Characteristics
GENERAL SPECIFICATIONS RX-7-164, RX-7-248 AND RX-7-328
Frequency Response
(Measurement of source impedance 150
ohms)
+0dB, -0.5dB; 50Hz to 20kHz +0dB, -2.0dB; 20Hz to 30 kHz
Total Harmonic Distortion
Less than 0.5% at +4dB* output at 1kHz
Hum and Noise
(20Hz to 20kHz, input termination of 150 ohms,
Input Level Switches at -60dB, Input Trim at 0)
-128dB* Equivalent Input Noise
-130dB* Equivalent Input Noise, IHF A weighted
-64dB* (68dB S/N) Group Out, Group and one Input Fader
at nominal level
-64dB* (68dB S/N) Program Out, PGM Master and Group
controls at max. level, all Group Faders and one Input Fader
at nominal level
-64dB* (68dB S/N) FB Out or Echo Send, FB Master or Echo
Send control and one FB or Echo mix control at nominal
level
Maximum Voltage Gain
84dB CH IN to Group Out
84dB CH IN to Program Out
84dB CH IN to FB Out
94dB CH IN to Echo send
20dB AUX IN to Group Out
20dB ECHO IN to Group Out
10dB SUB IN to Group Out
Equalization
(CH IN, AUX IN, ECHO IN)
LOW 100Hz
Shelving (±15dB maximum)
MID
200Hz to 5kHz, variable Peaking (±15dB maximum)
HIGH 10kHz
Shelving (±15dB maximum)
High Pass Filter
12dB/octave roll off switchable for 3dB down at 60Hz or
120Hz
Oscillator/Generator
Switchable sine wave at 400Hz, 1kHz and 10kHz (1.0%
Total Harmonic Distortion at +4dB* output) or pink noise.
Inputs and Outputs
See accompanying tables of Input Characteristics and
Output Characteristics.
Crosstalk
-60dB at 1kHz, input to output
VU Meters
(0VU = +4dB* output)
RX-7-164
4 large, illuminated meters; switchable for Group or
Program
3 smaller, illuminated meters; switchable for 2 Foldback or 2
Echo and CUE or TB
RX-7-248
4 large, illuminated meters for Group
4 large, illuminated meters, switchable for Program 1—5,
2—6, 3—7, and 4—8
3 smaller, illuminated meters; switchable for 2 Foldback or 2
Echo and CUE or TB
RX-7-328
4 large, illuminated meters for Group
4 large, illuminated meters, switchable for Program 1—5,
2—6, 3—7, and 4—8
6 smaller, illuminated meters for 2 Foldback, 2 Echo, CUE
and TB
Peak Indicators
LED built into each input turns on when the pre-Fader level
reaches 10dB above nominal.
LED built into each Group, FB, Echo and Program Out turns
on when the output level reaches 10dB above nominal.
Phantom Power
48V DC is applied to balanced input transformers for
powering condenser microphones.
Finish
Black panel, rosewood trim, padded armrest
Dimensions (W×D×H)
RX-7-164
40-3/8" × 32-3/8" × 13-7/8" (1026 × 822 × 353 mm)
RX-7-248
55-5/8" × 33-1/4" × 15" (1412 × 843 × 382 mm)
RX-7-328
66-5/8" × 32-3/4" × 15" (1691 × 833 × 382 mm)
Weight
RX-7-164; 78kg (171 pounds)
RX-7-248; 109kg (240 pounds)
RX-7-328; 138kg (303 pounds)
Power Consumption
RX-7-164; 120VA maximum
RX-7-248; 145VA maximum
RX-7-328; 170VA maximum
Accessory
Talkback Microphone
*0dB is referenced to 0.775V RMS
— 6 —
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