Solo 100
This page has design files and additional information about the GAD book amplifier - the Solo 100 v4.
This page has design files and additional information about the GAD book amplifier - the Solo 100 v4.
The off-board power supply wiring diagram is here.
The off-board power supply wiring diagram is here.
The LTspice file for the amplifier circuits is here.
The LTspice file for the amplifier circuits is here.
Include files for LTspice are here.
Include files for LTspice are here.
The QCAD file for the amplifier chassis is here.
The QCAD file for the amplifier chassis is here.
PDF drill patterns created from the QCAD file are here. Print them full-size - not "scaled to fit."
PDF drill patterns created from the QCAD file are here. Print them full-size - not "scaled to fit."
A mockup of front panel full-scale artwork is here and shown below. A final panel design depends on cabinet and personal choices.
A mockup of front panel full-scale artwork is here and shown below. A final panel design depends on cabinet and personal choices.
The BOM (suitable for Mouser) for the amplifier is here.
The BOM (suitable for Mouser) for the amplifier is here.
The PCB component layout diagram is here.
The PCB component layout diagram is here.
Appendix LTspice files: (requires the LTspice include files)
Appendix LTspice files: (requires the LTspice include files)
1st Printing Corrections (6/18/20):
1st Printing Corrections (6/18/20):
p18 first paragraph, last sentence:
p18 first paragraph, last sentence:
It is clear that there are many examples of input stages that lead to amplifiers with perceived good tone.
It is clear that there are many examples of input stages that lead to amplifiers with perceived good tone.
p65 last sentence:
p65 last sentence:
There is no possibility of chassis-currents or ground-loops with this arrangement, so the amp is quiet and hum-free.
There is no possibility of chassis-currents or ground-loops with this arrangement, so the amp is quiet and hum-free.
p146 Figure E.3:
p146 Figure E.3:
The numbering from E.3 to E.6 should be E.4 to E.7. The label "E.3" is repeated, so the figures in the remainder of the section are off by one.
The numbering from E.3 to E.6 should be E.4 to E.7. The label "E.3" is repeated, so the figures in the remainder of the section are off by one.
Solo 100 Version 4.3 including SoloVerb 3
Solo 100 Version 4.3 including SoloVerb 3
A new version of the Solo 100 includes additional user controls and spring reverb in a head cabinet configuration. A new page describing this amp is found here.
A new version of the Solo 100 includes additional user controls and spring reverb in a head cabinet configuration. A new page describing this amp is found here.
New: Solo v4.3 amp with reverb and tremolo as built by others
New: Solo v4.3 amp with reverb and tremolo as built by others
This beautiful version of the amp was built by David Anderson. It includes a new SoloTrem card that provides two types of tremolo: Amplitude Modulation (AM) and Harmonic Modulation (HM).
This beautiful version of the amp was built by David Anderson. It includes a new SoloTrem card that provides two types of tremolo: Amplitude Modulation (AM) and Harmonic Modulation (HM).
David also designed a custom 4x8 cab that matches the head.
David also designed a custom 4x8 cab that matches the head.
This beauty was built by Charlie Campbell. It also includes a SoloTrem card that provides Amplitude Modulation (AM) and Harmonic Modulation (HM) tremolo. Charlie's amp sports a maple cabinet in a very compact design.
This beauty was built by Charlie Campbell. It also includes a SoloTrem card that provides Amplitude Modulation (AM) and Harmonic Modulation (HM) tremolo. Charlie's amp sports a maple cabinet in a very compact design.
Side and rear panels with vents
