Extron electronic MLS 406, MLS 304SA Audio input, Audio output Lineout and Preamp, Included parts

PRELIMINARY

Reference Material, cont’d

Audio input

Number/signal type
MLS 304 Series	4 stereo, unbalanced
	1 Aux/Mix balanced/unbalanced mono (nonswitchable)
MLS 406, Series	5 stereo, unbalanced (inputs 1-3, 5, 6)
	1 stereo, balanced/unbalanced (input 4)
	1 Aux/Mix balanced/unbalanced mono (nonswitchable)
Connectors
MLS 304 Series	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)
MLS 406 Series	3 pairs of female RCA connectors (inputs 1-3)
	1 female 3.5 mm captive screw connector, 5 pole (input 4)
	2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 5, 6);
	tip (L), ring (R), sleeve (GND)
	(1) 3.5 mm captive screw connector, 3-pole (Aux/Mix input)
Impedance	>10k ohms unbalanced, DC coupled
Nominal level	-10 dBV (316 mVrms)
Maximum level	+8 dBV (10.2 dBu, 2.51 Vrms), unbalanced at <0.1%THD+N
	+10 dBu (7.28 dBV, 2.45 Vrms), balanced at <0.1% THD+N
Input gain adjustment	-42 dB to +24 dB, adjustable per input

N0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Audio output — Lineout and Preamp

Number/signal type	2 (1 Lineout/fixed and 1 Preamp/variable) stereo/mono, balanced/
	unbalanced
Connectors	(2) 3.5 mm captive screw connectors, 5 pole
Impedance	50 ohms unbalanced, 100 ohms balanced
Gain error	±0.8 dB channel to channel
Nominal level	Configurable: -10 dBV (316 mVrms, default), +4 dBu (1.23 Vrms)
Maximum level (600 ohm)
Power amp (mono or stereo)
	>+17 dBu, balanced < 0.5% THD+N
Preamp	>+19 dBu, balanced < 0.1% THD+N
Lineout	>+16 dBu, balanced < 0.1% THD+N

NUnbalanced wired outputs produce 6 dB of attenuation. Balanced outputs have unity gain/attenuation.

Audio output — mono power amp (MLS 304MA, MLS 406MA only)

Number/signal type	(1) mono
Connector	(1) 5-position screw terminal
Sensitivity	-20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power
	output
Power bandwidth
Direct (4 ohm)	20 Hz to 20 kHz, ≤ 0.5% THD	Included parts
Direct (8 ohm)	20 Hz to 20 kHz, ≤ 0.15% THD
Transformer (70 V)	50 Hz to 20 kHz, ≤ 1% THD
Transformer (100 V)	50 Hz to 20 kHz, ≤ 0.5% THD

A- MLS 304 Series, MLS 406 Series • Reference Material