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THANK YOU! 

For purchasing a Morley® pedal. You now own the best 4 way 

Multi-Channel Volume 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.

 

 

FEATURES

 

• 

Minimum Volume Control: 

This allows you to adjust your pedal as if it were 

specifically made for you. We’ll give you two examples of how this control can be 
used. Once you’ve used it, you’ll probably find even more uses. 

 

NOTE: Because of the many varieties of instruments and amps, the minimum 

volume control may have no effect until it is turned clockwise (right) half or 
more of its travel. This is normal - time spent finding the right setting will 
make your pedal’s volume response perfect for your style.

  

 

Example #1 - For volume change throughout travel of the pedal: 

With the pedal in the “off” 

position (toe up) while continuously playing a note on your instrument, turn the minimum 
volume control clockwise (right) until you start to hear the note through your amp. Then, turn 
the control counter clockwise (left) slightly until the note can’t be heard through the amp. 

 
Example #2 - For rhythm to lead changes: 

With the pedal in the “off” position (toe up), turn 

the minimum volume control clockwise (right) until you’re playing at your normal rhythm 
level through your amp. With this setting, you can play rhythm with the pedal “off”(toe up) 
and move the pedal forward (toe down) for solos. When you return to rhythm, simply move 
the pedal back to “off” position. This eliminates hunting for your original rhythm volume 
level once you’ve completed your solo.

 

 

• 

Travel: 

This control changes the response of the pedal. 

 

FULL (counter-clockwise) spreads the volume control out over the entire pedal sweep. 

The end result will be a pedal that comes on very slowly at first and then increases 
towards the middle and end of the sweep.

 

SHORT (clockwise) makes the pedal come on a bit sooner for more traditional type 

volume swells.  

 

• 

Electro-Optical: 

The amount of light from the LED (Light Emitting Diode) that 

shines on the LDR (Light Dependent Resistor) is controlled by a shutter placed 
between the two devices. Our unique electro-optical design ensures smooth overall 
control of the Volume without unwanted noise typical with potentiometer (pot) 
controlled pedals.

 

 

• 

LED WAH On/Off Indicator:

 A red LED located above the Minimum Volume 

knob serves as a power on/off indicator.

 

 

 

OPERATION

 

This 4 way Multi-Channel Volume Pedal has been specially designed for gradual 
volume increases as the pedal is moved from off (toe up) to mid-travel (halfway 
between toe up and toe down).  From mid -travel to full on (toe down) the volume 
increases faster. This audio taper combination gives you majestic volume swells - 
great for pedal steel effects - when using the full pedal travel (toe up or toe down) 
or subtle volume change with slight pedal movement. The pedal should be plugged 
into your signal chain directly after your instrument and before devices that add 
gain (such as preamps, distortion and overdrive effects). Plugging into the pedal 
after these type of effects may result in unwanted volume in the “off” position. 

NOTE: How fast you move the pedal affects how the volume increases. The 
slower you move the pedal, the smoother the volume increases. 

CONNECTIONS 

9V: Use Morley’s 12 VDC 300 milliamp adapter only. Center pin is positive.

 

INPUTS (Channel 1- 4):  Input jacks. Plug instrument into these jacks using 1/4” 
guitar cables. 
OUTPUTS (Channel 1 - 4): Connect amplifier(s) to these jacks using 1/4” guitar 
cables. 

AC ADAPTER 

Use Morley’s 12VDC 300 milliamp adapter only. To prolong adapter life, always 
plug the adapter into the pedal BEFORE plugging adapter into power source. 

 

BATTERY

  

The SLMC-4 is designed to use two 9 volt batteries when not using an adapter. 
We suggest you use good quality alkaline batteries. 
To prolong battery life, unplug your cord(s) completely from both input jacks 
when not using the pedal. When the pedal is not used for extended periods, we 
recommend you remove the batteries from the pedal or replace them every six 
months to prevent leakage problems.

  

 

BATTERY REPLACEMENT

 

Low or fluctuating output levels and/or a dim LED power indicator are signs of 
weak batteries. To avoid poor performance, replace the batteries when these signs 
appear.   
Slide the battery door located on the underside of the pedal to expose batteries. 
Make sure the polarity (+/-) is correct before inserting the new battery. 
When you close the battery door, you will notice it fits very tightly against the 
batteries. This prevents the batteries from rattling inside the pedal.

 

 

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