T
ROUBLESHOOTING
(see Joe for new troubleshooting tips)
Symptom
Distorted or no mic signal with active pickup.......
NO signal with battery power.......(delete mix return as a cause)
No signal with AC power....(delete mix return as a cause)
Microphone Channel dead with mini electret Microphone connected to INPUT jack..... (fix phantom power
orientation, delete AUX/mic in override)
Mic is dead and pickup appears in Microphone Channel.......
Piezo/magnetic pickup dead or low level in mic Channel ....
Noise or distortion from either Channel......
(fix low battery solution
Distortion from extremely "hot" signals.......(fix?)
Hum.....
Piezo high frequency loss.....(delete)
REMOVE PLUG FROM THE
MICROPHONE EFFECTS RETURN
DEVICE APPEARING AT THE
MICROPHONE EFFECTS RETURN
IS BREAKING THE SIGNAL PATH
NO SIGNAL
WITH BATTERY POWER
NO SIGNAL
WITH AC POWER
MICROPHONE CHANNEL DEAD
WITH MINI-MICROPHONE
CONNECTED TO INPUT JACK
PHANTOM POWER IS OFF
( SWITCH IS OUT )
TURN PHANTOM POWER ON
( SWITCH IS IN )
LOOSE BATTERY COMPARTMENT
TERMINALS
MUTE SWITCH IN
REMOVE BATTERY AND RE-TENSION TERMI-
NALS BY PULLING THEM UP WITH YOUR FINGER
SET MUTE SWITCH TO OUT POSITION
SYMPTOM
TYPICAL CAUSE
SOLUTION
MUTE SWITCH IN
SET MUTE SWITCH TO OUT POSITION
MICROPHONE IS DEAD AND PICKUP
APPEARS IN MICROPHONE CHANNEL
MICROPHONE AND PICKUP ARE WIRED TO STEREO
OUTPUT JACK BACKWARDS
( MICROPHONE TO TIP AND PICKUP TO RING )
WIRE PICKUP TO TIP AND MICROPHONE TO
RING OF STEREO OUTPUT JACK
NOISE OR DISTORTION
FROM EITHER CHANNEL
LOW BATTERY
TRIM CONTROL(S) SET TOO HIGH
MECHANICAL NOISE FROM INSTRUMENT
MECHANICAL NOISE FROM
INSTRUMENT CABLE
WHEN LOW BATTERY LED STAYS ON
WITH INPUT JACK PLUGGED IN,
IT IS TIME TO CHANGE THE BATTERY
LOWER TRIM CONTROL(S)
UNTIL DISTORTION DISAPPEARS
LISTEN TO INSTRUMENT ACOUSTICALLY
TO ISOLATE NOISE
TIGHTEN ALL PLUG HARDWARE
HUM
AN UNREGULATED POWER SUPPLY WILL CAUSE THE
POCKET BLENDER TO HUM UNDER AC POWER
POORLY SHIELDED OR
UNSHIELDED CABLE
USE ONLY FISHMAN 910-R
OR ROLAND PSA SERIES AC ADAPTERS
USE ONLY QUALITY FULLY SHIELDED
INSTRUMENT CABLES
HIGH FREQUENCY LOSS WITH
PASSIVE PIEZO
INSTRUMENT CABLE IS TOO LONG
USE ONLY 15’ OR SHORTER INSTRUMENT
CABLES WITH PASSIVE PICKUP
DISTORTION FROM EXTREMELY
‘HOT’ SIGNALS SUCH AS
EXTERNAL PICKUP
INPUT CLIPS WITH TRIM CONTROL
ALL THE WAY DOWN
CONSULT FISHMAN TECH SUPPORT LINE
AT 978-988-9665
Trim Control
Set as high as possible without hearing distortion.
Start with the control fully clockwise and play your loudest note or chord. If you hear distortion, lower the
trim with a small slotted screwdriver until the distortion goes away.
The Trim control can also be used to set the baseline levels for the Microphone and Transducer
Channels. If there is a disparity between the microphone and pickup levels, use the Trim control to
attenuate one channel (usually the Transducer Channel). Try setting the Trim controls this way ...
1.
Set the Output Level to 3:00.
2.
Set both Channel volumes to 12:00.
3.
Play a note or chord on your instrument and lower the Transducer Channel Trim control until both
levels are equal, or are balanced to suit your taste.
Hi Cut Switch
Push in this switch to reduce microphone feedback.
Lo Cut Switch
Push in this switch to roll off excessive boominess in the Microphone Channel, especially for guitar.
T
RANSDUCER
C
HANNEL
Volume Control
Normally set the volume at around 12:00 (see Trim instructions below).
Bass and Treble Controls
These shelving style tone controls provide basic equalization for the Transducer Channel. Set them at
12:00 for no cut or boost (flat).
Trim Control
Set as high as possible without hearing distortion.
Start with the control fully clockwise and play your loudest note or chord. If you hear distortion, lower the
trim with a small slotted screwdriver until the distortion goes away.
Phase Switches
Prevent feedback and match up the pickup and microphone signals for a stronger sounding amplified
signal.
Refer to Page 6 for more information on how to use the Pocket Blender's Phase switches.
14
P o c k e t B l e n d e r
P o c k e t B l e n d e r
7
