Samson manual Application 4 Using the MPL 1640 as a recording mixer, Compressor / Limiter DAT

Applications

Application 4 - Using the MPL 1640 as a recording mixer

You can also use the MPL 1640 as a recording mixer when making simple recordings (for example, when recording a rehearsal or practice session direct to open-reel two-track, cassette, or DAT recorder). Microphones and line level signals are connected to various channel inputs. Signal processors are connected to Aux sends and returns and to channel inserts as required. A submix from Aux send 1 is connected to the input of a headphone amplifier driving cue headphones so that performers can receive a headphone mix independent of the main control room mix. Finally, the Main Mix outputs are connected to the inputs of a two-track or DAT recorder, with the outputs of the two-track or DAT recorder connected to channels 15 and 16. These two channels are routed to Bus 3/4 (by pressing in their Bus switches), and the Bus 3/4 outputs are connected to a power amplifier driving the control room speakers. The Main Mix inserts are connected to a dynamics processor (compressor/limiter) in order to automatically limit the mixed signal going to tape, while the Bus 3/4 inserts are connected to a graphic equalizer in order to “tune” the control room so as to provide accurate frequency response. In this setup, the Main L/R faders control the signal level going to tape, while the Bus 3/4 level knob controls the playback volume (you’ll want to set the tape recorder to monitor input signal while recording). One significant advantage of using this kind of setup is that it allows you to continuously monitor the signal arriving at the two-track tape recorder, as opposed to simply monitoring the signals arriving at the MPL 1640 inputs.

STEREO AMPLIFIER

SAMSON SERVO - 240

GRAPHIC EQUALIZER

E62 1/3 OCTAVE DUAL 31 BAND GRAPHIC EQUALIZER SAMSON

COMPRESSOR / LIMITER

DAT

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

!

SERIAL

NUMBER

ASSEMBLED IN R.O.K.

AVIS:

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR.

DO NOT EXPOSE THIS EQUIPMENT

TO RAIN OR MOISTURE.

XLR

1GND

2+

3-

SAMSON	16 CHANNEL
	MPL 1640 AUDIO MIXER

SAMSON TECHNOLOGIES CORP., NEW YORK, U.S.A.

TIP RING SLEEVE

TIP +

RING -

SLEEVE GND

PHANTOM	MAIN MIX OUT							CH 10		CH 9		CH 8		CH 7		CH 6		CH 5		CH 4		CH 3	CH 2	CH 1
	(BALANCED 600Ω + 4dB)	CH 16	CH 15	CH 14	CH 13	CH 12	CH 11
	ON
	L
							2	1	2	1	2	1	2	1	2	1	2	1	2	1	2	1	2	2
								3		3		3		3		3		3		3		3		3

POFF

O

W

E

ON

MIC INPUT

(BALANCED - 50dB TO + 4dB)

R

BUSS INSERT

AUX OUT

LINE INPUT

(BALANCED 10 KΩ - 40dB TO + 4dB)

(UNBAL.2KΩ

+4dB)

OFF

R

L

3L - 4R(UNBAL.2KΩ +4dB)

MAIN MIX

3L - 4R

AUX 3

AUX 2

AUX 1

CH 16

CH 15

CH 14

CH 13

CH 12

CH 11

CH 10

CH 9

CH 8

CH 7

CH 6

CH 5

CH 4

CH 3

CH 2

CH 1

115

R

~115V /230V

R

AUX 3

L

R AUX 2

L

R

AUX 1 L

CHANNEL INSERT

(TIP RETURN - RING SEND)

50/60Hz 42W

AUX RETURN (UNBAL.2KΩ + 4dB)

SIGNAL PROCESSOR SIGNAL PROCESSOR

MIDI TONE GENERATOR

Q5

Q5 HEADPHONE AMPLIFIER

27