[제품설명]
• 3 inputs (each with a volume control), and one
35W amplifi er output channel in 135MA
• 4 inputs (each with a volume control), and one
60W amplifi er output channel in 160MA
• Ideal for paging, background music, and
• Balanced Phoenix-type mic/line input,
telephone output, dual RCA stereo music
inputs, screw-terminal speaker outputs
• Priority muting by VOX or external switch
• Bass and Treble controls on master output
• Three-Year, No-Fault, Fully Transferable
Warranty completely protects your investment
and guarantees its specifi cations
The 135MA shall have the following specifi cations:
Minimum guaranteed power into 8 ohms or 70V/100V output: 35W maximum
power at 1 kHz with 0.5% THD; Frequency Response (at 1 watt from
line out): 50 Hz to 20 kHz ± 1 dB, 19 Hz - 34 kHz +0, –3 dB; Signal to Noise
Ratio (ref. to rated power, master volume at minimum): Mic: > 58 dB, Line:
> 60 dB, Telephone: > 60 dB, Inputs 2 or 3: > 78 dB; THD + N: < 0.5% at
rated power at 1 kHz, < 0.1% at 5W at 1 kHz; Input Sensitivity (for full
output at maximum gain): Input 1: Mic 3mV, Line 800mV, Input 2: 400mV,
Input 3: 400mV; Input Impedance (nominal): Mic: 2.2 kilohms, Line: 10
kilohms, RCA: 10 kilohms; Crosstalk: –82 dB at 1kHz (Ch. 1 line input
0.8V, Ch. 1 volume at minimum, other channel volumes at maximum); Line
Output Level (nominal): 1V into 10 kilohms; Phantom Power: 15 VDC; AC
Line Voltages Available: Universal Power Supply. Line voltage tolerance
+15%, –20%; Operating Temperature/Humidity: 0° C to 40° C at 95% relative
humidity (non-condensing); Storage Temperature: –20° C to 85° C.
Front Panel Controls and Indicators
Front panel controls and indicators shall include the following:
Power Switch: Pushbutton on-off switch; Input Volume Controls: Four
controls, one per input, detented potentiometers with knobs; Tone
Controls: Bass and Treble non-detented recessed potentiometers under
master output volume control, Bass ±10 dB at 100 Hz, Treble ±10 dB at 10
kHz; Power Indicator: Blue LED indicates power on; Input Signal Presence
Indicators: Green LED, one above each channel's input attenuator, illuminates
when input signal exceeds –40 dBu; Input Signal Clip Indicators:
Green LED, one above each channel's input attenuator, fl ashes brightly at
threshold of audible distortion; Output Signal Presence Indicator: Green
LED above master output volume control illuminates when any input signal
exceeds –40 dBu; Output Signal Clip Indicators: Red LED above master
output volume control fl ashes brightly at threshold of audible distortion;
Master Output Volume Control: Detented potentiometer with knob.
Rear Panel Controls and Connectors
Rear panel controls and connectors shall include the following:
AC Power Inlet: Detachable IEC accepts US or Euro style power cords;
Amplifi er Output Connector: 4-position terminal barrier block with COM
(Common), 8 ohms, 70V and 100V terminals, accepts up to 10 AWG terminal
forks, non-touch cover included; Preamp Line Out Connector: 3-pin
balanced Phoenix-type for connection to external amplifi ers, level independent
of master volume control; Input Connector 1: 5-terminal Phoenix
connector. 3 terminals for balanced signal, 2 terminals for priority contact
closure, which mutes other channels when DIP switch 3 is on; Input
Connector 2: Unbalanced line-level RCA-type connectors; Input Connector
3: Unbalanced line-level RCA-type connectors; Telephone (MOH) Output
Connector: 4-terminal Phoenix connector (2 terminals for 1W output to 8-
ohm speaker, 2 terminals for 600-ohm output to PBX music-on-hold port);
MOH Level Control: Trim pot adjusts level for Music-On-Hold output from
Telephone (MOH) Output Connector; Amp Confi guration DIP Switch: DIP
switch selection for multiple functions; VOX Threshold: Trim pot controls
how loud the voice on CH1 must be before muting other channels, can be
Cooling shall be by convection. Included protection mechanisms shall
be current limiting, over-temperature thermal cutout, and DC-fault load
protection. The unit shall be protected against turn-on/turn-off thumps.
Included accessories shall be a power cord, non-touch cover for output
connectors, and Phoenix-type connectors. Optional accessories shall be
Part no. IST 600-ohm Isolation Transformer for Telephone Output or Input
1, Part no. RM1 single rack mount kit for mounting a single MA unit in
a rack, Part no. RM2 double rack mount kit for mounting two MA units
side-by-side in a rack, Part no. S-Cover 10-pack of security knobs.
The dimensions of the mixer-amplifi er shall be as follows:
Width: half rack width (9.5 in. or 24.1 cm), height (front panel): 3.5 in. (8.9
cm), height (including feet): 4.1 in. (10.5 cm), depth (front panel to back
panel): 12.2 in. (31.0 cm), depth (front of knobs to back panel): 13.9 in.
The mixer-amplifi er shall weigh 8 lb 2 oz (3.7 kg).
The mixer-amplifi er shall be designated the Crown 135MA. | |
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현재위치 : 
