User Guide Owner's manual
Reference Material, cont’d
PVS 204SA Switcher • Reference Material
A-4
PRELIMINARY
Audio output — power amplier
Number/signal type .................... (1) stereo (default) or dual mono, 2 channels total
Connectors .................................... (1) 5.0 mm captive screw connector, 4 pole
Impedance ..................................... 4/8 ohms (single channel) or 4/8 ohms (stereo)
Amplifier type ............................... Class D
Gain/volume adjustment  ........... -10 dB to +10 dB (default = 0 dB), adjustable in 1 dB steps
Frequency response ..................... 20 Hz to 20 kHz, -1 dB/+3.5 dB @ 1 watt output, 8 ohm load
THD + Noise  ................................. 0.2% @ 1 kHz at nominal level (1 watt, 8 ohm load)
S/N .................................................. >67 dB, 20 Hz to 20 kHz at maximum output (unweighted),  
8 ohms (with 50’ cables) 
†
Continuous power output with a full load at 1 kHz, 1% THD
 At 4 ohms.......................... 13 watts (rms) per channel (1 watt tolerance)
 At 8 ohms.......................... 7 watts (rms) per channel (1 watt tolerance)
Damping factor .............................. >80 (8 ohm load)
General
External power supply ................. 100 VAC to 240 VAC, 50/60 Hz, external, autoswitchable; to 12 VDC,  
3 A, regulated
Power input requirements ........... 12 VDC, 3 A
Temperature/humidity ................ Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing 
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
Rack mount .................................... Yes, with optional 1U rack shelf, part #60-190-01 (RSU 129) or 60-604-01 
(RSB 129); or 1U VersaTools
®
 3" deep rack shelf, part #60-190-20 (RSF 123) or 
60-604-20 (RSB 123) 
Also furniture mountable with an optional MBU 123 mini under-desk 
mounting kit, part #70-212-01; or above-projector mountable with optional 
kits PMK 350 (#70-563-xx) or PMK 300 (#70-374-01)
Enclosure type  .............................. Metal
Enclosure dimensions  .................. 1.7" H x 8.7" W x 3.0" D (1U high, half rack wide) 
4.3 cm H x 22.1 cm W x 7.6 cm D
Product weight .............................. 2.5 lbs (1.1 kg)
Shipping weight ........................... 5 lbs (2.3 kg)
Vibration  ........................................ ISTA 1A in carton (International Safe Transit Association)
Listings............................................ UL, CUL
Compliances ................................... CE, FCC Class A, VCCI, AS/NZS, ICES
MTBF ............................................... 30,000 hours
Warranty  ........................................ 3 years parts and labor
N
  All nominal levels are at ±10%.
N
  Specifications are subject to change without notice.
Control/remote — switcher
Serial host control ports .............. 2 bidirectional RS-232: 1 rear panel 3.5 mm captive screw connector,  
5 pole (shared with IR control); 1 front panel 2.5 mm stereo mini jack
Baud rate and protocol ................. 9600 baud, 8 data bits, 1 stop bit, no parity
Serial control pin configurations .  Captive screw connector: A = TX, B = RX, C = IR receive, D = GND,  
E = 12 VDC 
2.5 mm mini stereo jack: tip = TX, ring = RX, sleeve = GND
DC volume control port ............... (1) 3.5 mm captive screw connector, 3 pole
DC volume control pin configurations 
1 = 10 VDC, 2 = variable voltage or mute, 3 = GND
Volume control voltage range ..... 0 V (mute) to 10 V (maximum volume)
Program control ............................. Extron’s Simple Instruction Set (SIS
™
)










