Diamond Phase User Manual
!
Phase
Two & six stage phaser / vibe guitar effect pedal
User Manual
v1.00 • December 31, 2007
Phase user manual v1.00! 1
!
INTRODUCTION
Thanks for purchasing a Diamond Phase 2 & 6 stage phase / vibe. The Phase provides the
ability to select either a deep ‘70s swirl 6 stage JFET phase shift effect, or a more subtle 2
stage alt-rock effect, with the added versatility of being able to remove the direct signal
path in ‘vibe’ mode for unique pulsing effects.
Remember to protect your hearing and wear appropriate hearing protection when playing loud…
DESIGN BACKGROUND
The Phase has been one of our
longest running ‘on the drawing board’ projects, with initial
development starting even before the Memory Lane got underway in the fall of 2004. A
number of different underlying
phase shift topologies came
and went before settling on a
modification of the classic
JFET / opamp phase shift
stage. As design continued on
in early 2007, we also decided
to throw out our announced
‘Phase FM’ envelope controlled phaser design as too
complicated and finicky. In the
end, we decided on a simpler classic phaser design with several elements of added versatility: foot control of LFO speed, simple mono operation with separate direct out, overall
volume control, and a ‘vibe’ setting implemented by removing the direct signal path from
the mix. We were nearing final production PCB’s in the spring/summer of 2007 when a
customer suggested that the ability to provide either 2 or 6 phase shift stage operation
would be a really great feature. We quickly modded one of our prototypes, and fell in
love with the subtler 2 stage sound. Production came to a halt as we reworked the box
mold, screen print graphics and PCB and managed to get a revised prototype Phase out to
summer NAMM 2007. Moving forward through fall 2007, the Phase again fell victim to
the Memory Lane - this time development work on the new Memory Lane 2 kept the final
production touches on the Phase from happening until after winter NAMM 2008, when
one final frequency balance change was made to the design and the Phase finally began
full production.
Phase user manual v1.00! 2
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