Tascam 488 PORTASTUDIO Owner's Manual

Also see for 488 PORTASTUDIO: Owner's manual

Contents

488 MIXERInput SectionThe input section of the 488 is made up of inputjacks, input level controls (on channels 1 and 2only) and switches that determine where theinput signal is sent.Channels 1-2 differ from channels 3-8 inconstruction.[Channels 1-2]1. MIC/LINE IN jack: This 1/4" jack acceptsunbalanced signals ranging from -50 dBV (0.3 mV) to -10 dBV (0.3 V), depending on thesetting of the TRIM control (#3).3. TRIM control: This sets how much pream-plification level there is on the MIC/LINEINputs (#1). When TRIM is turned all theway to the left (LINE position), thepreamplifier gain is low, allowing the jack toaccept line level sources such as electronicinstruments or other -10 dBV output audioequipment. As you turn TRIM up, thepreamplifier gain increases, and when youturn TRIM full clockwise (MIC position), thenominal input sensitivity of the jackincreases to -50 dBV (0.3 mV).4. INPUT ASSIGN switch: This controls wherethe MIC/LINE jack signal is sent:MIX: signal is sent through the mixerchannel controls.OFF: stops the signal here.GRP: sends signal directly to the correspon¬ding MASTER faders, directly, withoutpassing through the mixer channelcontrols.[Channels 3-8]2. LINE IN jack: This 1/4" jack is for connectionof unbalanced line level signals. Thenominal input sensitivity is -10 dBV (0.3 V).The LINE input has no trim control anddirectly reaches the INPUT ASSIGN switch.4. INPUT ASSIGN switch: This controls wherethe LINE jack signal is sentMIX:for sending signal through the mixerchannel controls.OFF :turns the signal off.GRP (channels 3 and 4):sends signal to MASTER fader "3-4",directly, bypassing the channelcontrols.