EBS STANLEY CLARKE operation manual

EBS STANLEY CLARKE PREAMP

USERS MANUAL

EBS STANLEY CLARKE

SIGNATURE ACOUSTIC PREAMP

USERS MANUAL

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USERS MANUAL

EBS STANLEY CLARKE PREAMP

CHANNEL CONTROLS, SWITCHES & OUTPUTS

MID. These two knobs works in conjunction. Use the lef t
control to pick a frequency. Use the right control to boost
or cut the gain in the range of the chosen frequency. The
MID-controls are identical on both channels.

MASTER controls the volume on the Output jack.
The balanced output (X LR) is not affected by the
setting of this knob.

BASS is a 'shelving' type
filter with a wide gain
range. Identical on both
channels.

PHASE. This switch inver ts
the phase of the A channel
when needed.

MUTE FOOT SWITCH. Mutes the balanced
outputs and the master output.
Fx Send is not affected by this func tion.

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ELECTRET FUNCTION
This switch should be set to
OFF at all times, except when
using an Electret pickup on
the A channel (INPUT).

EBS STANLEY CLARKE PREAMP

USERS MANUAL

REFERENCE GUIDE

TYPE selects the function of the FILTER knob
between High Pass or Notch (same function available on both the A and B
channel).Default position is HP with the FILTER knob turned down to OFF.

SOURCE sets the input source for the B channel
to either 1/4” (CH B Input) or XLR (MIC Input)

GAIN adjusts the input signal level. An optimum
level is when the peak led starts flashing when
playing hard on your instrument. A correctly set
gain is vital for the signal processing to work
properly.

TREBLE is a shelving type filter controlling the
higher mids and treble registers, giving presence
and ambiance to the sound. The TREBLE control
is identical on both channels.

A/B F OOT SWITCH

When A+B push switch is in its’ OUTER position:

Selects bet ween A or B channel when only the A
input (I NPUT ) is used.

FILTER works in conjunction with
the TYPE switch for each channel.
Choose between High Pass ( HP)
or Notch, and set the value with
the Filter knob. Default position is
the FILTER knob turned down to
Off and the Type switch set to HP.
Set the values individually for the
A and B channel.

If XLR input or B channel 1/4” jack is used at the
same time, B selects this source.

When A+B push switch is in its’ INNER position:

Selects bet ween A or A+B, i.e. either only A or
A in series with B channel when only A input is
used. When B channel input jack is used or XLR is
selected for channel B, both channels are mixed
together and the A /B foot switch has no effect.

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USERS MANUAL

TUNER OUT. This output is taken at the FX send and can be used to connect

A

to a tuner. This output becomes ac tive when Mute is on.

FX LOOP. Connect a TRS cable, such as the EBS ICY-30, to B to create an

B/C

Effects Loop where you can insert your ef fects. C offer the choice to set the
effects loop in parallel mode.

OUTPUT. This is the master output jack to be connected to another amp or

D

power amplifier.

EBS STANLEY CLARKE PREAMP

A

B

C

D

CHANNEL B INPUT. This input is a direc t input to the B channel or to both A+B

E

if the A+B switch is in its’ inner position.

A+B. When A+B push switch is in its’ OUTER position:

F

Selects bet ween A or B channel when only the A input (INPUT) is used.
If XLR input or B channel 1/4” jack is used at the same time, B select s this source.

When A+B push switch is in its’ INNER position:

Selects bet ween A or A+B, i.e. either only A or A in series with B channel when
only A input is used. When B channel input jack is used or XLR is selected for
channel B, both channels are mixed together and the A/B foot switch has no
effect.

INPUT - The A channel input is a low noise, high impedance instrument input.

G

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E

F

G

EBS STANLEY CLARKE PREAMP

K

J

I

Note: The balanced output of fers high­quality ’line box’ signal for connecting
to PA mixing consoles or to studio
or broadcast recording units, with
high noise immunity. The output level
controlled by the MASTER knob does
not affect this output.

------------

H

MIC INPUT. Makes possible to use
a +48V Phantom microphone as the
input for the B channel.

BAL OUT. This output sends a

I

balanced output signal af ter the pedals
equalizer.

Engage this switch to add an emulated

J

Speaker Simulation to the balanced
output.

GND LI FT. Eliminates ground noise

K

and hum. When required, press the
Gnd Lif t switch to disconnect the
ground from the balanced output.

USERS MANUAL

H

L

M

N

AUX IN. Auxiliary input to be

L

monitored only with headphones.
This input has no level control and
the volume should be adjusted by
the source.

M

PHONES. Connect your
headphones here for silent
practicing. The volume from the
preamp is controlled by the M ASTER
knob where the Aux In level needs to
be adjusted from the signal source.

N

DC INPUT. Connect the power
supply here, only 9V DC, 1000 mA
(supplied in package).

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USERS MANUAL

EBS STANLEY CLARKE PREAMP

TECHNICAL SPECIFICATIONS

Channel Specifications:

Input Impedance: 10 Mohms // 22 pF
Gain: Gain Range -o o/+30 d B
Gain Peak LED

(ch A = RED, B = yellow)
Frequency Response +0/-3 dB 20-20.000 Hz

Bass Filter: Typ e Shelving

Gain Range +/- 15 dB @ 40 Hz

Mid Filter: Typ e Bandpass Filter

Gain Range +/- 13 dB
Frequency Range 70 - 2500 Hz
Q 0.8

Treble Filter: Typ e Shelving

Gain Range +/- 15 dB @ 10 kHz

HP Filter: Typ e 12 dB/octave High Pass

Frequency Range 20(off) - 450 Hz

Notch Filter: Type Bandpass Notch

Frequency Range 70 - 2200 Hz
Q 7
Attenuation 7 dB (typically)

Electret Power (Channel A): 5V, 2mA

+10 dBv

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EBS STANLEY CLARKE PREAMP

Common Features:

Effects Loop: Loop Signal Level -10 dBv (nominal)

Gain Uni t y (1:1)
Output Impedance 2 kohms
Input Impedance 100 kohms

Modes Serial or Parallel
Phones Out: Recommended Imp. 32 - 200 ohms
Aux Input: Input Impedance 20 kohms

Nominal Level -10 d Bv
Output: Output Impedance <1 kohms

Signal Level 0 dBv (nominal)
Balanced Output: Output Level -20dBv (nominal)
XLR Connections 1-GND, 2-Hot, 3-Cold
Options Gnd Lif t, SPKR Sim
Balanced Input (Channel B): Input Level -30dBv (nominal)
XLR Connections 1-GND, 2-Hot, 3-Cold
48V Phantom Yes
Auxiliary Info:
Power Requirements Idle 500mA @9V

max 800mA @9V

Dimensions (WxDxH): max 168 x 124 x 53 mm /

Weight: 660 g ( 1.5 lb s.)

Specifications are subject to change without notice.

USERS MANUAL

(with headphones at
max output level)

6.6” x 4.9” x 2.1”

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USERS MANUAL

peak (red)

EBS STANLEY CLARKE PREAMP

EFFECTS

LOOP

(-10 dBv)

SEND

RETURN

OUTPUT

(POST EQ)

A/B

FOOT

SWITCH

BALANCED

Lift

Sim

Gnd

Spkr

MUTE

FOOT

DRIVER

SWITCH

AUX IN (3.5 mm)

NOTCH

MIDDLE

TREBLE

GAIN

Phase

Filter

Select

NOTCH

HI PASS

MIDDLE

TREBLE

BASS

peak (orange)

A

GAIN

Mix

Filter

Select

HI PASS

OUT

TUNER

BASS

post peak

A

MASTER

Source

1/4"

XLR

Mode

Parallel

Matrix

A

CH B

A+B

MIC. PREAMP

(48V Phantom)

MICROPHONE

INPUT

OUTPUT

A

HEADPHONES

AMPLIFIERS

A

OUTPUT

HEADPHONES

Hi-Z BUFFER

Electret

5 V

BLOCK DIAGRAM - STANLEY CLARKE ACOUSTIC SIGNATURE PREA MP

INPUT

2 mA

CH A

Hi-Z BUFFER

INPUT

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