Update on the pedal mod page

Electro Harmonix Nano Pog preset mod

Find it here.

  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog
  • Zeta Sound mod Electro Harmonix Nano Pog

Boss CS-1 led indicator mod

An old version of the Boss CS-1 compressor with the bypass indicator wired as battery check led. Led is only active with the footswitch pressed down.

Boss CS-1 bypass mod
Boss CS-1

Circuit board modified for led indicator as “effect on”.

Boss CS-1 bypass mod
Boss CS-1 led mod

Morley Power Wah Volume boost mod

Here’s a mod for the Morley Power Wah Volume pedal. The mod places the boost as a stand alone circuit, giving the option to toggle it in with an extra stompswitch installed with a LED indicator for effect on. It affects both volume and wah circuit in this configuration.

  • Morley Power Wah Volume boost mod
  • Morley Power Wah Volume boost mod
  • Morley Power Wah Volume boost mod

Seimens tube amp mod

The channel switching mod to the old Siemens 6 S Ela 2427c installed. The optocouplers circuit board found a place.

Siemens 6 S Ela 2427c
Siemens 6 S Ela 2427c guts

Another view, on the left is the input jack, switch for channels and a remote jack for channels.

Siemens 6 S Ela 2427c
Siemens 6 S Ela 2427c guts

I removed the guts from the pilot lamp and installed the channel indicating leds in it. We can see the two new pots installed, a clean volume pot and a mids pot.

Siemens 6 S Ela 2427c
Siemens 6 S Ela 2427c front

Another view where you can see the new wiring to the old pilot lamp now acting as channel indicator.

Siemens 6 S Ela 2427c
Siemens 6 S Ela 2427c top

/Krister

Laney Klipp100 modified

Laney Klipp100 amplifier after modification. The master volume pot was a mod already made. It now holds a switch for channel selection, a 6,3mm jack for remote channel switching and indicating leds for each channel.

Laney Klipp100 front panel
Laney klipp100 front

Back of the amplifier. Bias pot, bias measuring points , effects loop with send level pot and a gain switch.

Laney Klipp100 back panel
Laney Klipp100 back

Here’s an image with the channel switching circuit board installed using optocouplers .

Laney Klipp100 channel switching
Laney channel switching

A closer look at the gain switch mod and the effects loop.

Laney Klipp100 Gain switch
Laney gain switch

Here’s an image of the bias pot with measuring outlets and the transformer for the channel switching circuit,

Laney Klipp100 channel switching transformer
Laney klipp100 power

/Krister

Tube amp channel switch

A new channel switching circuit board prepared for an old tube amp.

Tube amp channel switching
Tube amp channel switching

The plan is to fit it in this one.

Siemens Tube Amp
Siemens 6 S Ela 2427c

/Krister

Laney Klipp100 effects loop

Since the channel mod was made on the amp it saved a half 12AX7 preamp valve. Decided to use it as gain recovery stage and add an effects loop to the amp.

Effects loop Laney Klipp100
Effect loop Laney Klipp100

/Krister

Laney Klipp100 channel mod.

Adding some optocouplers and making the klipp and the normal input selectable. Using either the switch on the front panel or remotable with a foot switch,

Laney Klipp100 channel switching
New circuit board with optocouplers added

The front panel of the amp with the new hardware added. switching with the remote input.

Channel switching

/Krister

Boss DS-1 OD mod

Turning the Boss DS-1 into something more of an overdrive, giving it a more dynamic response. Changes are made to the transistor booster stage, OP-amp gain stage and the overall frequency respons. Check Thomas Ziden as he gives an somewhat unusual pedal demo.

/Krister

Boss bypass mod

Got a dead Boss DS-1 on the bench for repair and modification. I just had to replace the fried opamp and it was up and running. I was also told to mod the pedal in anyway I liked. Ever since I made the T-rex Mudhoney 2:nd stage mod the idea has been there to try something similar on a Boss or Ibanez pedal. So here it is on a Boss DS-1 pedal, the feature to choose a latching or momentary bypass.

Boss DS-1 latching or momentary bypass.

/Krister Östman