XPA U 358C New

Eight Channel Combo Amplifier
35 Watts Per Channel
Key Features
  • Four channels of 35 watts at 8 ohms or 4 ohms
    Four channels of 35 watts at 70/100V
  • ENERGY STAR® qualified amplifier
  • Extron Patented CDRS™ - Class D Ripple Suppression
  • Convection cooled, fanless operation - can be stacked without extra rack space for ventilation
  • Eight channels in a 1U, half rack width enclosure - single and dual rack mount hardware included
  • Defeatable auto-standby with fast wake up
The Extron XPA U 358C
Model Version Description Part #
XPA U 358C-70V 70V Eight Channel Combo Amp, 35 watts per channel 60-1762-01
XPA U 358C-100V 100V Eight Channel Combo Amp, 35 watts per channel 60-1762-11

The Extron XPA U 358C is an ENERGY STAR qualified audio power amplifier delivering eight 35 watt channels in a half rack, 1U, convection cooled, plenum rated enclosure that includes rack mount hardware. The XPA U 358C-70V simultaneously delivers 35 watts into four channels at 8 or 4 ohms and 35 watts into four channels at 70 volts while the XPA U 358C-100V simultaneously delivers 35 watts into four channels at 8 or 4 ohms and 35 watts into four channels at 100 volts . The XPA U 358C offers unprecedented channel density and ability to install units without using rack spaces for ventilation, conserving precious rack space. It features a highly efficient advanced Class D amplifier design with power factor correction, ultra low inrush current, defeatable auto‑standby with fast wake up, and our patented CDRS – Class D Ripple Suppression.

High Channel Density

The XPA U 358C is the industry's first eight channel, half rack amplifier. Since it doesn't require empty rack spaces for cooling or external transformers, the XPA U 358C can deliver up to eight times the channels in two rack spaces compared to competitive amplifiers. This is made possible by Extron's advanced thermal engineering, which includes fanless convection cooling, no chassis heatsinks, and Everlast power supplies. The cumulative effect of hundreds of precise design choices enables many XPA U 358C units to be placed in an equipment rack without the need to waste rack space for ventilation above the amplifiers.

XPA U 358C stacked
XPA Ultra amplifiers stacked four high without ventilation space.

Designed by Extron

Every circuit in an XPA Ultra power amplifier is designed by our team of dedicated power amplifier engineers, ensuring that every Extron amplifier meets our high standards of excellence. By designing everything in-house, Extron engineers can meticulously optimize every detail for maximum performance, reliability, power efficiency and reduced heat.

High Efficiency

With tested and measured efficiency benchmarks up to 77%, the XPA Ultra uses less electricity to generate the same amount of power. This has the direct benefit of lower electricity costs and less power infrastructure required.

Cool Operation

An XPA® Ultra amplifier runs up to 28% cooler, with up to 49% less power wasted as heat, and up to 59% less radiated heat compared to competitive amplifiers. Electronics that run cooler, last longer and don’t transfer heat to other gear sharing the same rack. The low radiated heat of the XPA Ultra amplifiers, enabled by our advanced thermal engineering, saves on cooling costs and allows more channels of amplification to be put into fewer rack spaces.

Fast Wake from Standby

The XPA U 358C meets ENERGY STAR qualification requirements with an auto power-down feature that places the amplifier into standby after 25 minutes of inactivity. When in standby, the XPA U 358C draws less than one watt of power. It silently comes out of standby upon detection of signal in under 100 milliseconds, fast enough that the beginning of sound is not cut off. When coming out of standby, the XPA U 358C draws minimal inrush current, creating no sudden demand on power systems. For applications where the amplifier is required to remain active at all times, the XPA Ultra provides the ability to defeat auto-standby while maintaining ENERGY STAR status.

Rock-Solid Reliability

Product reliability is a high priority at Extron and we go to great lengths to engineer products with industry-leading low failure rates, driven by rigorous testing of everything we ship. From the elimination of short-lived electrolytic capacitors in the signal path, to PCB designs that exclude the use of failure-prone wire harnesses, to accelerated burn-in testing, the XPA U 358C is engineered by Extron for many years of service.

Features

OPTIONAL ACCESSORIES
  Flexible Conduit Adapter Kit Installation Kit for Hard Wired Electrical Environments
  SPK 14 14 AWG Speaker Cable
  SPK 16 16 AWG Speaker Cable
  SPK 18 18 AWG Speaker Cable
  RSU 129 Universal Rack Shelf Kit for 9.5" Deep Products
  RSB 129 Basic Rack Shelf for 9.5" Deep Products
  UTS 100 Series Under Table Shelf System
  Half Rack Shelf System Half-Rack Width Rack Shelf and Accessories
RELATED SPEAKERS
  SF 26CT SoundField XD 6.5" Two-Way Ceiling Speaker with 8" Composite Back Can and 70/100 V Transformer
  SF 3C LP SoundField XD 3" Full-Range 8 Ohm Ceiling Speakers with 4" Low Profile Composite Back Can
  SF 3CT LP SoundField XD 3" Full-Range Ceiling Speakers with 4" Low Profile Composite Back Can and 70/100 V Transformer
  SF 3PT SoundField 3" Full-Range Pendant Speaker
  SF 26PT SoundField 6.5" Two-Way Pendant Speaker
  FF 120T Full-Range Flat Field Speakers with 1' x 2' Low Profile Enclosure and 70/100 V Transformer
  FF 220T Full-Range Flat Field Speakers with Low Profile Enclosure and 70/100 V Transformer
  CS 123T Full-Range 70/100 V SpeedMount Ceiling Speaker System
  CS 3T Full-Range Open Back Ceiling Speakers with 70/100 V Transformer
  SM 3 SpeedMount Compact Full-Range Surface Mount Speakers
  SM 26 SpeedMount Two-Way Surface Mount Speakers with 6.5" Woofer
  SM 28 SpeedMount Two-Way Surface Mount Speakers with 8" Woofer
RELATED PRODUCTS
  XPA 1002 Two Channel Low and High Impedance Amplifiers – 100 Watts Per Channel
  XPA 2001 Mono 70/100 V Amplifier - 200 Watts
  XPA 2002 Two Channel Amplifier - 200 Watts Per Channel
  XPA 2003C Three Channel Combo Amplifier - 200 Watts Per Channel
  XPA 2004 Four Channel Amplifier - 200 Watts Per Channel
  XPA 4002 Two Channel Amplifier - 400 Watts Per Channel
  MPA 152 Plus Stereo Amplifier - 15 Watts Per Channel
  MPA 601 Mono 70/100 V Amplifier - 60 Watts

Specifications

XPA U 358C Series
Audio
   Voltage gain 
      Channels 1, 2, 3, and 4 14x (23 dB)
      Channels 5, 6, 7, and 8 
         XPA U 358C-70V 57x (35 dB)
         XPA U 358C-100V 81x (38 dB)
   CMRR 75 dB (typical) @ 1 kHz
Audio input
   Number/signal type 8 balanced/unbalanced
   Connectors (4) 3.5 mm captive screw connector, 5-pole
   Impedance >10k ohms balanced/unbalanced, DC coupled
   Nominal level +4 dBu, balanced
   Maximum level +20 dBu, balanced
   Input sensitivity +4 dBu
   Input signal detection threshold -65 dBu ±3 dB, balanced
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output
   Number/signal type 
      XPA U 358C-70V 8 channels, 4 low impedance and 4 high impedance 70V
      XPA U 358C-100V 8 channels, 4 low impedance and 4 high impedance 100V
   Connectors (4) 5 mm screw-lock captive screw connector, 4-pole
    NOTE     These connectors accept wires of 22 AWG to 12 AWG.
   Load impedance 
      Channels 1, 2, 3, and 4 4 ohms minimum
      Channels 5, 6, 7, and 8 
         XPA U 358C-70V 143 ohms minimum
         XPA U 358C-100V 286 ohms minimum
   Amplifier type Class D
   Output power
      Channels 1, 2, 3, and 4 35 watts rms per channel, 4 ohms, 1 kHz, 0.1% THD
35 watts rms per channel, 8 ohms, 1 kHz, 0.1% THD
      Channels 5, 6, 7, and 8 
         XPA U 358C-70V 35 watts rms per channel, 70V, 1 kHz, 0.1% THD
         XPA U 358C-100V 35 watts rms per channel, 100V, 1 kHz, 0.1% THD
   Frequency response 20 Hz to 20 kHz, ±1 dB
   THD + Noise 0.1% @ 1 kHz at 3 dB below clipping
   S/N 100 dB, 20 Hz - 20 kHz, unweighted
   Damping factor 
      Channels 1, 2, 3, and 4 >100 @ 8 ohms
      Channels 5, 6, 7, and 8 
         XPA U 358C-70V >100 @ 143 ohms
         XPA U 358C-100V >100 @ 286 ohms
   High pass filter 
      Channels 5, 6, 7, and 8 80 Hz, 12 dB per octave rolloff, selectable via captive screw
Control/remote — amplifier
   Control port (2) 3.5 mm captive screw, 2-pole
   Pin configurations 
      Standby power control (contact closure) Pin 1 = GND, pin 2 = Standby
      High pass filter (contact closure) Pin 1 = GND, pin 2 = OFF
General
   Power supply Internal
Input: 100 VAC - 240 VAC, 50-60 Hz
   Power consumption and thermal dissipation 
      XPA U 358C-70V
  115 VAC, 60Hz 230 VAC, 50Hz
AC Line
Current
AC Power
Consumed
Thermal
Dissipation
AC Line
Current
AC Power
Consumed
Thermal
Dissipation
Condition A W W BTU/hr A W W BTU/hr
Active (1/8 power), all
channels driven
8Ω (ch 1-4)
70V (ch 5-8)
0.5 52.0 17.0 58 0.3 51.0 16.0 55
4Ω (ch 1-4)
70V (ch 5-8)
0.5 53.0 18.0 61 0.3 51.9 16.9 58
Quiescent (idle) 0.1 9.0 9.0 31 0.2 8.7 8.7 30
Standby <0.1 <1 <1 <3 <0.1 <1 <1 <3

 

      XPA U 358C-100V
  115 VAC, 60Hz 230 VAC, 50Hz
AC Line
Current
AC Power
Consumed
Thermal
Dissipation
AC Line
Current
AC Power
Consumed
Thermal
Dissipation
Condition A W W BTU/hr A W W BTU/hr
Active (1/8 power), all
channels driven
8Ω (ch 1-4)
100V (ch 5-8)
0.5 52.5 17.5 60 0.5 51.5 16.5 56
4Ω (ch 1-4)
100V (ch 5-8)
0.5 53.7 18.7 64 0.3 52.6 17.6 60
Quiescent (idle) 0.1 9.2 9.2 31 0.2 9.0 9.0 31
Standby <0.1 <1 <1 <3 <0.1 <1 <1 <3

 

   Temperature/humidity 
      Storage −40 to +158 °F (−40 to +70 °C) / 10% to 90%, non-condensing
      Operating +32 to +122 °F (0 to +50 °C) / 10% to 90%, non-condensing
      Cooling Convection, no vents
   Protection Clip limiting, thermal, short circuit, DC output
   Indication Limiter/Protect LED indicates the onset of clip limiting, thermal cycling, or a short circuit.
Over Temp LED indicates when the amplifier exceeds the recommended operating temperature for optimal unit longevity. 
Power LED indicates power state, DC output protection (see XPA Ultra Series User Guide for details).
   Rack mount Yes, with included mounting brackets or optional rack shelf
   Enclosure Metal
   Enclosure dimensions 1.7" H x 8.7" W x 10.5" D (1U high, half rack wide)
43 mm H x 220 mm W x 267 mm D
   Product weight 4.2 lbs (1.9 kg)
   Regulatory compliance CE, CEC, CISPR 22 Class B, C-tick, CUL, ENERGY STAR®, European Code of Conduct,  FCC Class B, ICES, RoHS, UL, UL 2043, VCCI Class B
   Product warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
(4528-D2)
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1762-01 4.75" (12.1 cm) 13.25" (33.7 cm) 14.25" (36.2 cm) 6.5 lbs (2.95 kg)
    60-1762-11 4.5" (11.4 cm) 13.5" (34.3 cm) 14.5" (36.8 cm) 6.8 lbs (3.08 kg)

Diagram


Panel Drawing

Panel Drawing
© 2019 Extron. Specifications are subject to change without notice.