APPENDIX C: SPECIFICATIONS: TECH STUFF

LM-3204 Owner’s Manual Specs

Noise (20Hz to 20kHz bandwidth, Line inputs to Main L/R outputs, all channels assigned):

Master fader down, Ch. gains down

–104.2dBu

Master fader @ unity, Ch. gains down

–86.6dBu

Master fader @ unity, Ch. gains @ unity

–84.0dBu

Total Harmonic Distortion

(1KHz @ +14dBu 20Hz–20kHz, Channel input):

Main L/R output

.0022%

Control Room output

.0024%

Alt 3–4 output

.0016%

Maximum Levels

Mic preamp input

+14dBu

All other inputs

+22dBu

All outputs

+22dBu

Impedances

Mic preamp input

5k

All other inputs

10k

All outputs

120

Equalization

Crosstalk (1kHz @ 0dBu, 20Hz to 20Khz bandwidth, channel in to Main Left outputs):

Channel gain down, channels 2–16 at Unity

–73dBu

Channel muted, channels 2–16 at Unity

–81dBu

Lo EQ

Shelving

80Hz

+/–15dB

Mid EQ

Peak

2kHz

+/–12dB

Hi EQ

Shelving

12kHz

+/–15dB

Microphone Preamp

Frequency Response (any input to any output):

20Hz to 50KHz

+0dB/–1dB

20Hz to 100KHz

+0dB/–3dB

E.I.N. (150 terminated, max gain): –129dBm

Power Requirements 120 VAC, 50/60Hz, 60 watts

Weight

LM-3204 console

24 lbs.

LM-3204 Gain Path Diagram — all levels in dBu

max out +22

+14 max in

0

0

0

0

 

 

 

 

 

 

-10 trim dn

 

 

MIC INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALT OUTPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-50 trim up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+22 max in

 

gain up +30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

max out +22

 

 

 

 

 

lo/hi +15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fader up +10

 

max out +22

 

 

fader up +10

 

 

 

0

0

 

 

mid +12

0(B)

0

 

 

 

 

 

0

 

0

level up 0

 

 

 

 

 

 

 

mid -12

-6

-6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INSERT

 

 

lo/hi -15

 

 

 

FADER

 

 

 

OUTPUT

 

 

 

 

 

 

 

 

 

LINE INPUT

GAIN

EQ

MIX

INSERT

 

 

 

 

 

 

CONTROL ROOM

 

 

 

 

 

CHANNEL

 

 

 

 

 

OUTPUT SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+22 max in

 

level up +20

 

 

level up +15

 

max out +22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

 

 

0

0

0

0

 

0

 

 

0

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to meters

 

 

 

TAPE INPUT

 

AUX RETURN

 

CH. LEVEL

 

MIX

OUTPUT

METER FEED

 

 

 

 

 

 

 

 

 

 

 

 

AUX SEND

 

 

 

 

 

(0dB @ O/P = 0dB @ METERS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

34