Mod WAHTZ WAH K-985 Manual Download Page 12

18)  Mount one 2N5088 transistor to Terminals #5, #6 and #7.

Terminals #5:  

Collector

Terminals #6:  

Base

Terminals #7:  

Emitter

2N

5088

E B C

12

19)  Mount the remaining 2N5088 transistor to Terminals #12, #13 and #14.

Terminals #12:  

Collector

Terminals #13:  

Base

Terminals #14:  

Emitter

2N

5088

E B C

20)  Locate the battery clip.  Twist its leads together a few times.  Connect the black lead of the 
battery clip to the input jack's ring lug.  Connect the red lead of the battery clip to the power jack's 
positive-switch lug.

Tip: It's always a good idea to thoroughly double check all of your connections to insure they are 
properly connected and soldered before applying power for the first time.

SECTION 6 - Final Assembly

Setting up the Wah Pot with the Rack

With the wah pedal still upside down, push the wah 
base to close against the treadle so that the footswitch 
is lightly resting against the treadle in toe-down position.

While looking at the top of the wah pot from the input jack side of the enclosure, use your fingers 
to rotate the pot's shaft and gear to the full counter-clockwise position.

(If you measure the electrical resistance between pot lugs 1 and 2 with an ohm meter at this setting, 
you should be measuring the pot's minimum resistance - i.e. close to 0

Ω

 instead of 100k

Ω

).

Now, bring the rack forward so that its teeth interlock with those of the pot's gear.  (You may 
have to advance the pot's shaft slightly clockwise to get a snug fit between the rack teeth and pot 
gear).

Loosen the rack tensioner screw and push the rack 
tensioner to the side so that the wah pot's gear is 
completely separated from the rack.

1

2

Rack 

Tensioner

While holding the rack against the pot gear, bring the rack tensioner so that its edge is parallel 
with the ledge in the rectangular opening as shown in the drawing.

While holding the rack against the pot gear, position the rack 
tensioner so that its edge stays parallel with the edge of the 
rectangular opening as shown in the drawing.  Pull the rack 
tensioner towards the rack as much as possible and hold it there 
while using a screw driver to tighten the rack tensioners screw 
all the way down.  Make sure the front edge of the tensioner is 
still parallel.  

(You can add a dab of Vaseline to the junction 

between the rack and the rack tensioner for lubrication).

Summary of Contents for WAHTZ WAH K-985

Page 1: ...d the long life potentiometer manufactured specifically for use in wah pedals is included to provide years of smooth quiet operation Point to point construction allows advanced kit builders to easily...

Page 2: ...Allen Wrench to tighten the tension adjustment screw 12 mm Wrench to fasten the wah pot in its mounting bracket Contact Cement or other adhesive to secure the tread and pedal bumpers TABLE OF CONTENT...

Page 3: ...in 1 Rear Bumper 1 Front Bumpers 2 Bottom Cover 1 Wah Base 1 Treadle 1 Rubber Tread 1 Mounting Screws 2 M4 x 0 70 L 16 mm Rack Assembly Parts Rack 1 Small Screw 1 M3 x 0 5 L 12 mm Hex Nut 1 M3 x 0 5 S...

Page 4: ...H Terminal Strip with 8 Terminals P 0802H 2 Terminal Strip with 2 Terminals P 0201H 1 Terminal Strip with 5 Terminals P 0501H 1 DPDT Foot Switch P H498 1 Battery Clip S H155 1 4 Screws 3 8 long S HS44...

Page 5: ...k red gold 1K R A1D5K 1 1 5k Resistor W brown green red gold 1 5K R A10K 1 10k Resistor W brown black orange gold 10K R A22K 1 22k Resistor W red red orange gold 22K R A33K 1 33k Resistor W orange ora...

Page 6: ...e a good solder joint Take your time with each connection and make sure that all components are connected and will remain connected if your project is bumped or shaken Bend the component lead or wire...

Page 7: ...er holders at the toe end This will cushion the footswitch when turning the pedal on and off Front Bumper Holders Remove the backing from the rear bumper and mount it in the hole on top of the holder...

Page 8: ...w with your fingers until its head is flush with the back of the L bracket Do NOT tighten this screw yet Slide the bearing pin out and set it aside The pillow block is now aligned for final assembly B...

Page 9: ...f the adjustment screw with a 5 mm Allen wrench so that the treadle stays in place when you remove your foot and so that it suits your playing preference Base Assembly Looking at the inside surface of...

Page 10: ...terminal 4 to pot lug 3 Do NOT solder the pot connection yet 8 Strip and tin a 1 piece of wire and connect pot lug 3 to footswitch lug 6 Now solder the pot connection 9 Strip and tin a 4 piece of wir...

Page 11: ...f the wire and crimp it around the terminal with needle nose pliers 5 Connect the 33K resistor to terminals 20 and 21 6 Connect the 4 7 F cap and 100K resistor to terminals 19 and 21 Make sure the neg...

Page 12: ...the full counter clockwise position If you measure the electrical resistance between pot lugs 1 and 2 with an ohm meter at this setting you should be measuring the pot s minimum resistance i e close t...

Page 13: ...ay foam block Place the bottom cover over the base and attach the base using the feet and their mounting screws Fixing a Squeaky Wah If you find that your wah pedal is squeaking when you rock the trea...

Page 14: ...Output Jack Input Jack DRAWING 1 RING LUG TIP LUG DC Power Jack GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 14...

Page 15: ...ut Jack Input Jack DRAWING 2 RING LUG TIP LUG DC Power Jack GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 1 2 3 4 5 6 1 2 3 17 18 20 21 22 23 1 2 3 4 5 6 7 8 19 9 10 11 12 13 14 15 1...

Page 16: ...GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 1 2 3 4 5 6 1 2 3 17 18 20 21 22 23 1 2 3 4 5 7 8 19 9 10 11 12 14 15 16 22 33K 4 7 F35V 68K 103K 400V 1 5K 103K 400V 470K 470K 1K 10K...

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