Morley BASS WAH (PBA) User Manual
Morley Musical Instruments
 
THANK YOU!
For purchasing a Morley® pedal. You now
own the best Bass Wah pedal made!
Please take a few minutes to familiarize 
yourself with the features of your new 
pedal. With common sense handling, it 
should last for years. We know you will 
appreciate the rugged construction of your 
Morley®. Most of all, we hope you enjoy 
using it as much as we enjoyed building it. 
 
AC ADAPTER
 
Use only Morley’s 9-volt 300 milliamp 
regulated adapters. Using a non-regulated 
adapter could cause a low frequency hum 
in your amplifier and may damage the 
pedal. 
 
BATTERY
 
The Bass Wah is designed to use one 9 volt 
battery when not using an adapter. We 
suggest you use a good quality alkaline 
battery. 
To prolong battery life, unplug your cord 
completely from the input jack when not 
using the pedal. When the pedal is not used 
for extended periods, we recommend you 
remove the battery from the pedal or 
replace it every six month to prevent 
leakage problems. 
 
 
 
 
 
 
CONNECTIONS
 
9V: Connect Morley’s 9 volt 300 milliamp 
regulated AC adapter to this jack. 
IN: Input jack. Plug instrument into this 
jack using 1/4” guitar cable. 
OUT: Connect amplifier to this jack using a 
1/4” guitar cable. 
 
NOTE: You’ll find cords fit very tightly 
into our input and output jacks. The tight fit 
helps prevent the cord from becoming 
accidentally unplugged from the pedal. 
Make sure the cords are completely 
plugged in for best results. 
CONTROLS
 
WAH LEVEL CONTROL: Dial in exactly 
the amount of WAH you need. Setting this 
control at 10 o’clock position is great for 
subtle wah changes and enhancements to 
your tone. Set the control at the 12 o’clock 
(mid) position for standard wah tones. For 
full on WAH funk fest, turn the level 
control full up. 
 
 
 
 
 
BATTERY REPLACEMENT
 
When the battery becomes weak, the 
overall wah will become weak and your 
signal may become slightly distorted. 
Remove the battery door located on the 
bottom of the pedal (a short cord is 
attached to the door to help prevent loss) 
 
Once the door is off, the old battery can be 
removed from the battery snap and a new 
battery plugged in. Make sure the polarity 
(+/-) is correct before inserting the new 
battery. 
When you replace the battery door , you 
will notice it fits very tightly against the 
battery. This prevents the battery from 
rattling inside the pedal. 
WARRANTY
 
All Morley® pedals are warranted for two 
years from date of purchase. To obtain 
warranty service contact the store where 
purchased, or call 1-800-284-5172. 
 
SPECIFICATIONS
POWER: 9 Volt Battery 
CURRENT DRAW: 12 mA @ 9 VDC 
WEIGHT: 3.2 lb./ 1.46 kg 
INDICATOR: Wah mode LED on 
 Bypass mode LED off