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Forum Home > Layout Gallery - GuitarPCB Build Documents, Mods and Tips > Tube Screaming Ultra

Barry
Site Owner
Posts: 8780

Landgraffe O.D style or Trower style tones, one board, you choose which!

Three Way-Tone Switch (Marshall - Lift - Diodes) and  L.D.O.

Values as expected although quite modifiable if you wish.

Use a 500k Gain Pot in either build if you want a more subtle gain range.

The 500k Gain Pot is more than adequate and also keeps the circuit from squealing if you must turn things to [10] especially when using LEDs.

Also feel to experiment with two silicon diodes and an LED asymmetrical for a new tone to try.


This will fit easily into a 125B enclosure!

Board Dimensions (W x H) 2.05” x 1.51” ca. 52 mm x 38.4 mm


LDO VERSION DEMO

This is the LDO version of the LDO/RTO circuit board from GuitarPCB.

Les Paul into clean Fender Twin Amp.

This circuit version is designed to emulate the Landgraffe OD.


RTO VERSION DEMO

This is the RTO version of the LDO/RTO circuit board from GuitarPCB.

Les Paul into clean Fender Twin Amp.

This circuit version is designed to emulate a more Trowerish tone.


LDO/RTO Build Documents

Updated 3/23/16

Always check the Layout Gallery for the latest build documents or potential mods.

Check the Forum for answers to many questions before posting a troubleshoot thread.

Do not miss the Easy Pedal Wiring Guide.

Namely the expansive Tips, Tricks and Tutorials section and the consolidated Crash Course Guide.

 

"Landgraff Overdrive" is a Trademark of John Landgraff Pedals. Guitarpcb.com is not affiliated with John Landgraff Pedals". Our unique boards are for comparison and education only and are not intended to be represented as clones or copies.

"Robin Trower Overdrive" is a Trademark of Fulltone. Guitarpcb.com is not affiliated with Fulltone". Our unique boards are for comparison and education only and are not intended to be represented as clones or copies.

All original copyrights, trademarks, and artworks remain the property of their owners.


Recommended accessories:

1. Barry's Famous Pot Condoms™ .

2. 3PDT Wiring Boards .

3. Barry's Best Pedal Hookup Wire.

4. DPDT Wiring Boards - Perfect for Mods

5. DC Power Jacks 2.1mm

6. Common Anode LED (Optional to Standard LED)

7. Plastic Bezels for Common Anode LEDs

8. Pot Condoms for mounting in tight quarters over potentiometers

9. GPCB Secure Mounts - For mounting with room to spare

June 6, 2013 at 8:23 AM Flag Quote & Reply

Barry
Site Owner
Posts: 8780

New Build Document for the Tube Screaming Ultra.

Formerly known as the LDO/RTO. Document updates RTO R8 change to 1k only.

Thanks to Benj for the update.

March 23, 2016 at 7:58 PM Flag Quote & Reply

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