Digital Audio Labs LACHAPELL AUDIO 983S MK2 Manual del usuario - Página 7

Navegue en línea o descargue pdf Manual del usuario para Amplificador Digital Audio Labs LACHAPELL AUDIO 983S MK2. Digital Audio Labs LACHAPELL AUDIO 983S MK2 12 páginas. Wo channel vacuum tube preamplifier for microphones and instruments

Imprimir página

CONTROLS

LEVEL

CONTROL

TUBE DRIVE

CONTROL

CONTROL DETAILS

• TUBE DRIVE: TUBE DRIVE controls how much of the source signal is fed to the vacuum tube. Higher

levels will drive the tube harder and result in more harmonics. Think of this control as your amount

of tube coloration/harmonics (distortion).

• LEVEL: Provides variable control over line level signal strength. Think of this control as your source for

clean gain. Typically, this control is used to establish the desired line level after the input gain has

been set but it can work interactively with the TUBE DRIVE for a wide array of tonal possibilities.

• 48V: The 983S MK2 features TRUE48™, a dynamic phantom

power supply that provides a 48 volt supply of DC current

for condenser microphones. Unlike other phantom power

supplies, TRUE48 provides a full 44-48V of phantom power

regardless of the source resulting in more headroom, lower

distortion and quicker transient recovery.

• HI-Z INPUT: The Hi-Z input stage is transformerless and operates

with an input impedance of 100Kohm. The input pad has no

effect on the Hi-Z input.

• 20dB INPUT PAD (-20): When engaged, the microphone input

source signal is reduced by 20dB.

• POLARITY REVERSE: Reverses the polarity of the output signal.

• MUTE: Output level mute. The MUTE LED will illuminate red when the channel is muted.

• VU METER: This detects the microphone input signal (not output level). The LED is calibrated to

detect input signals as low as -50dBu. When +4 is illuminated, it indicates that line level has been

achieved. The Clip LED is intended to be a warning that clipping may occur if output signal

strength is pushed further. It is calibrated to illuminate when the output is driving +23dBu into a

40kohm source. It does not necessarily indicate that the output stage has reached its limit.

• HIGH-PASS FILTER (HP): Select no fi lter (center position), cut at 50hz (down position) or cut at 150hz

(up position).

• LOW-PASS FILTER (LP): Select no fi lter (center position), cut at 5Khz (down position) or cut at 10Khz

(up position).

• POWER SWITCH: Master power rocker switch. LED will illuminate red when power is on.

• –

LACHAPELL AUDIO MODEL 983S MK2

HI-Z

LOW-PASS

TRUE48

INPUT

FILTER

PHANTOM

POWER

VU METER

HIGH-PASS

FILTER

-20 dB

PAD

CHANNEL

MUTE

POLARITY

REVERSE

CREATIVE TIP:

For near transformer-less sound,

consider engaging this pad

function and compensate for

the loss of gain by increasing

the input gain control. This

approach effectively minimizes

the input transformer gain

while drastically increasing the

character of the vacuum tube

(this is only possible with the

microphone path).

POWER