MA2152 Mixer / Amplifier 2:1(56 0$18$/
INTRODUCTION Thank your for your purchase of the Rolls MA2152 Mixer / Amplifier. The MA2152 is a two rack space mixer amplifier designed for restaurants, schools, churches, clubs etc. The unit provides a compact and efficient way to mix up to three sources such as AM/FM tuners, CD players, and video players with up to two microphones. Priority talkover is provided on Microphone Two for paging, and on Source One for a jukebox, telephone, etc.
DESCRIPTION FRONT PANEL Mic 1, 2: Adjust the level of signal from the corresponding Mic Input. TONE 1, 2: Adjusts the frequency content of the microphone signal in the channel. When the control is turned counter-clockwise, the high frequencies are cut, when the control is turned clockwise, the low frequencies are cut. Source 1 - 3: Adjust the volume of input from the RCA Source Inputs. IN 3: 1/8” (3.5 mm) Input jack - parallels the rear panel Source 3 Input.
CONNECTION Inputs Connect low impedance microphones to the Mic inputs. If a paging microphone is being used, connect it to Mic Input 1 so it may be used with the Talk Over function. Connect source signals such as CD players, cassette players or video players to the RCA Source Inputs. If a jukebox is being connected, and you want its signal to mute the other source signals, connect it to Source input 3. For recording purposes, connect a stereo RCA cable to the Record Out jacks, and to your recording device.
OPERATION DIP SWITCH SETTINGS (From left to right) • If a microphone requires phantom power, move the Mic channel’s corresponding PHANTOM POWER switch to the on position. This applies 12 volts dc phantom power to the indicated microphone. • SOURCE 1 MONO; this switch sums the Right and Left inputs of Source 1 to mixed dual-mono inputs. • Mic 1 Priority; when in the on position, all program material on Mic 2 and Sources 1 and 2 will be “ducked” or muted when a signal is present at Mic 1.
SPECIFICATIONS MIXER Input Impedance: Mic: Max Input Level: Mic: Connectors: Phantom Power: Max Gain: Tone Controls: Noise Floor: S/N Ratio: Priority Attenuation: POWER AMP Power Output, Stereo: 600 Ohms XLR balanced Source: 22K Ohms RCA Insert: 22K Ohms 1/4” TS unbal. -14 dBV Mic level Max Source: 24 dBV Insert: 24 dBV 2: XLR, 8: Stereo RCA, 3: 1/4” TRS, 1: Stereo 3.
2 J2 J3A RCAX4 RCAX4 J3D RCAX4 J3C 1 LEFT IN 4 J3B RCAX4 RIGHT IN LEFT IN RIGHT IN 4.99K XLR F PC R201 5 R504 10K 5 SW 1F 3 2 5 6 U5B 4560 7 4560 C502 -12V 7 C501 4560 U5A +12V 3 2 1 U4B P4A P100K X2 5 6 27PF C402 -12V +12V 4 4560 C401 22K R207 R107 33k 7 U4A 4 3 P100K X2 P3B 3 P100K X2 P3A 1 8 SW DIP-6 SW 1E PHAN PWR R202 4.99K R206 330 R205 330 SW DIP-6 PHAN PWR C202 10U 6 1U C102 R106 330 R102 4.
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