API 1608 Block Flow

API 1608 Signal Flow Enhanced Block Diagram

Studio Mic Panel

Patchbay

Patchbay

1608 Line Input

1608 Mic Input

Phase (ø)

Phase (ø)

PAD

PAD

48V

Mic Trim (GAIN GAIN))

Mic/Line Switch (MIC MIC)) Peak Indicator Preamp Out Pre-Fader ECHO Send Patchbay

***NOTE*** Pre-Fader ECHO send disconnected from ECHO Bus in 204 configuration. PreFader sends sources from DAW

Apogee A/D Input

Computer

Apogee D/A Output

Patchbay

EQ Input (500 Series slot)

EQ Out / Insert Send

Patchbay

Insert Return (Fader Input) Patchbay

Insert Switch (INS) INS)

Channel Fader

PFL

AFL 50 Hz. HPF (FLTR) FLTR)

SIP Mute

Direct Output

Patchbay

Channel Pan

Post Fader ECHO Sends 1-8

Bus Pan Assign (PAN) PAN)

Bus Assign 1-8

TO BUS Send 7/8 to Bus 1/2

PGM Assign PGM Assign (LR Bus)

Bus Master

Patchbay

Echo Send Master

Echo Send External Input EXT IN LR Stereo Bus

PGM Assign

PGM INS SEND/RTN Patchbay VU Meter

Stereo Fader

Meter ECHO Rtns (VU RET) Patchbay

Echo Send Output

Patchbay

ECHO RETURN (500 Series In)

Patchbay

PGM ON / TRIM

ECHO RETURN (500 Series Output)

Patchbay

Patchbay

ECHO RTN AUX Input

AUX IN / ECHO RTN Select ECHO RTN MIX

ECHO RTN Bus Assign Bus Assign Monitor Source Select

ECHO RTN PGM Assign PGM Assign

Bus Pan Assign PAN) (PAN)

Control Speakers ON

Speaker Select / Ctrl Room Volume

External Coleman Speaker Select

Amplifier Rack

Speakers