MLS 304SA
Extron MLS 304SA Four Input Switcher with Stereo Audio Amplifier
Key Features
- Controllable via TouchLink® Control System, MediaLink® Controller, front panel buttons, or RS-232
- Integrated stereo audio amplifier provides 24 watts, 2 x 12 watts rms, into 4 ohm speakers and 16 watts, 2 x 8 watts rms, into 8 ohm speakers
- Triple-Action Switching™ for RGB delay
- Front panel security lockout
| MLS 304SA | Stereo Audio Amplifier | 60-550-02 |
The Extron MLS 304SA is a simple-to-use, four input, multi-format switcher with an integrated stereo amplifier. It provides computer-video and composite video switching, along with stereo audio input switching. The MLS 304SA features an integrated audio amplifier with 24 watts, 2 x 12 watts rms, for 4 ohm speakers and 16 watts, 2 x 8 watts rms, for 8 ohm speakers. An additional input accepts balanced/unbalanced mono line level audio signals for mixing with any of the four switchable inputs. For enhanced operation, ease of room control, and simplified system integration, the MLS 304MA can be controlled with a TouchLink® Control System or MediaLink® Controller.
The MLS 304SA switcher features two configurable 15-pin HD inputs to support high resolution RGBHV or composite video sources, two additional dedicated inputs for composite video signals, and a 15-pin HD local monitor loop-through. All inputs support stereo audio. A line level mono audio auxiliary/mix input is available for consumer and professional audio sources such as a wireless microphone receiver for mixing with the selected input. The MLS 304SA also features audio input gain and attenuation for each input plus loudness control and master volume control on the front panel or via RS-232.
In addition to the integrated amplifier, the MLS 304SA includes two preamp balanced or unbalanced audio outputs, one fixed and one variable. All outputs can be configured via RS-232 for mono or stereo audio output.
Features
- Video inputs: Two female RCA connectors for composite video; two female 15-pin HD connectors for computer-video or composite video
- Audio inputs: Two pairs of female RCA connectors and two female 3.5 mm stereo mini jacks
- Video outputs: Dual RGB output on five female BNC connectors and one female 15-pin HD connector, and composite on one female BNC connector
- Audio outputs: Captive screw connectors and insulated screw terminals
- Controllable via TouchLink® Control System, MediaLink® Controller, front panel buttons, or RS-232 — The switchers can be controlled using the front panel backlit buttons or RS-232. An optional TouchLink Touchpanel Control System or MediaLink Controller may be connected to the RS-232 port to provide a simple and intuitive user interface for the MLS Switchers, and the entire room.
- Local monitor output — 15-pin HD connector functions as additional RGB output or local monitor output to enable preview monitor capability without the need of a distribution amplifier.
- Audio input gain and attenuation — Gain or attenuation can be adjusted for each input to eliminate noticeable differences when switching between sources.
- Fixed and variable preamp line level audio outputs — Can be set for mono or stereo via RS-232.
- Integrated stereo audio amplifier provides 24 watts, 2 x 12 watts rms, into 4 ohm speakers and 16 watts, 2 x 8 watts rms, into 8 ohm speakers — Outputs amplified stereo audio on insulated screw terminals.
- Additional input accepts balanced/unbalanced mono line level audio signals for mixing with any of the four switchable inputs
- Loudness control — Boosts low and high frequencies to compensate for the normal decreased hearing ability of the human ear at low volume levels.
- Triple-Action Switching™ for RGB delay — Blanks the screen during switching of RGB signals to eliminate visible switching transitions.
- Front panel security lockout — Allows security lockout of front panel setup and adjustment options.
- Rack-mountable, 1U, full rack width metal enclosure
- Highly reliable, energy-efficient internal universal power supply — The 100-240 VAC, 50/60 Hz, international power supply provides worldwide power compatibility with high demonstrated reliability.
| MLS 304 Series | |||
| Video | |||
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Unity | ||
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280 MHz (-3 dB) | ||
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1.0° at 3.58 MHz and 4.43 MHz | ||
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1.0% at 3.58 MHz and 4.43 MHz | ||
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-68 dB @ 10 MHz, -39 dB @ 100MHz | ||
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5 ms (max.) | ||
| Video input and loop through | |||
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2 RGBHV, RGBS, RGsB, RsGsBs 1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through 2 composite video |
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2 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through) 2 female RCA (composite video) |
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1 Vp-p for Y of S-video, and for composite video 0.7 Vp-p for RGB |
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Analog: 0.3 V to 1.5 Vp-p with no offset | ||
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Analog: 0.4 V to 2.0 Vp-p with no offset | ||
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75 ohms | ||
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15 kHz to 145 kHz | ||
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30 Hz to 170 Hz | ||
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<-40 dB @ 5 MHz | ||
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<-25 dB, 0 to 10 MHz | ||
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<-40 dB, 0 to 10 MHz | ||
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1.5 V | ||
| Video output | |||
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1 RGBHV, RGBS, RGsB, RsGsBs (follows input) 1 composite video |
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5 female BNC (RGB) 1 female BNC (composite) |
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1 Vp-p for Y of S-video, and for composite video 0.7 Vp-p for RGB |
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Analog: 0.3 V to 1.5 Vp-p (follows input) | ||
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Analog: 0.4 V to 2.0 Vp-p (follows input) | ||
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75 ohms | ||
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<-40 dB @ 5 MHz | ||
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±5 mV with input at 0 offset | ||
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Triple-Action (RGB delay) | ||
| Sync | |||
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RGBHV, RGBS, RGsB, RsGsBs | ||
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RGBHV, RGBS, RGsB, RsGsBs (follows input) | ||
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NTSC 3.58, NTSC 4.43, PAL, SECAM | ||
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2.0 V to 5.0 Vp-p | ||
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TTL: 5.0 Vp-p, unterminated | ||
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10k ohms | ||
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75 ohms | ||
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5.0 Vp-p | ||
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30 ns | ||
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4.0 ns | ||
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Positive or negative (follows input) | ||
| Audio | |||
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Unbalanced output: 0 dB; balanced output: +6 dB | ||
| Frequency response at 1 watt output | |||
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20 Hz to 20 kHz, ±0.5 dB | ||
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20 Hz to 20 kHz, ±1.0 dB | ||
| Transformer (70 V or 100 V mono amplifier) | |||
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50 Hz to 20 kHz, +0 dB/-3 dB | ||
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0.037% @ 1 kHz at nominal level (1 watt, 8 ohm load) | ||
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0.11% @ 1 kHz at nominal level | ||
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0.018% @ 1 kHz at nominal level | ||
| S/N at maximum power output (unweighted) | |||
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>75 dB @ 10 Hz to 22 kHz | ||
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>80 dB @ 10 Hz to 22 kHz | ||
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>80 dB @ 10 Hz to 22 kHz | ||
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<-75 dB @ 1 kHz, fully loaded | ||
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<-75 dB @ 1 kHz, fully loaded | ||
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<-80 dB @ 1 kHz, fully loaded | ||
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>80 dB @ 1 kHz | ||
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>85 dB @ 20 Hz to 200 Hz, >75 dB @ 20 Hz to 20 kHz | ||
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±10 dB @ 100 Hz | ||
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±10 dB @ 10 kHz | ||
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+6 dB @ 100 Hz to 10 kHz | ||
| Audio input | |||
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4 stereo, unbalanced 1 Aux/Mix balanced/unbalanced mono (nonswitchable) |
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2 pairs of female RCA connectors (inputs 1-2) 2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 3-4); tip (L), ring (R), sleeve (GND) (1) 3.5 mm captive screw connector, 3 pole (Aux/Mix input) |
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>18k ohms unbalanced, DC coupled | ||
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>10k ohms unbalanced, DC coupled | ||
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-10 dBV (316 mVrms) | ||
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-42 dB to +24 dB, adjustable per input | ||
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| Audio output — Lineout and Preamp | |||
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2 (1 Lineout/fixed and 1 Preamp/variable) stereo/mono, balanced/unbalanced | ||
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(2) 3.5 mm captive screw connectors, 5 pole | ||
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50 ohms unbalanced, 100 ohms balanced | ||
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±0.8 dB channel to channel | ||
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Configurable: -10 dBV (316 mVrms, default), +4 dBu (1.23 Vrms) | ||
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>+19 dBu, balanced <0.1% THD+N | ||
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>+16 dBu, balanced <0.1% THD+N | ||
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| Audio output — mono power amp (MLS 304MA only) | |||
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(1) mono | ||
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(1) 5-position screw terminal | ||
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-20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power output | ||
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1 kHz at 4 ohms | ||
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20 Hz to 20 kHz, 0.15% THD | ||
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50 Hz to 20 kHz, 1% THD | ||
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50 Hz to 20 kHz, 0.5% THD | ||
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20 watts max. (continuous) | ||
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16 watts max. (continuous), transformer coupled | ||
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Input limiting, thermal, short circuit | ||
| Audio output — stereo power amp (MLS 304SA only) | |||
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(1) stereo (default) or dual mono (configured via software) | ||
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(1) 5-position screw terminal | ||
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-20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power output | ||
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1 kHz at 4 ohms | ||
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20 Hz to 20 kHz, 0.8% THD | ||
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24 watts max. (continuous), 12 watts (rms) per channel | ||
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16 watts max. (continuous), 8 watts (rms) per channel | ||
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Input limiting, thermal, short circuit | ||
| Control/remote — switcher | |||
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RS-232, 3.5 mm captive screw connector, 5 pole (uses 3 poles) | ||
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9600, 8-bit, 1 stop bit, no parity | ||
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1 = Tx, 2 = Rx, 4 = GND | ||
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Extron configuration program for Windows® Extron Simple Instruction Set (SIS™) |
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| General | |||
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Internal Input: 100-240 VAC, 50-60 Hz, 48 watt power supply |
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Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +113 °F (0 to +45 °C) / 10% to 90%, noncondensing |
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Convection, no vents | ||
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Yes, with included brackets | ||
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Metal | ||
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1.75" H x 17.5" W x 8.5" D (1U high, full rack wide) 4.4 cm H x 44.4 cm W x 21.6 cm D (Depth excludes connectors and knob. Width excludes rack ears.) |
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6.0 lbs (2.7 kg) | ||
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11 lbs (5 kg) | ||
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ISTA 1A in carton (International Safe Transit Association) | ||
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CE, c-UL, UL | ||
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CE, C-tick, FCC Class A, ICES, VCCI | ||
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3 years parts and labor | ||
