Filter/Buffer Schematic Available Now! Build your own Filter/Buffer, Roland 13-pin sub-sonic filter to improve tracking plus adds additional inputs with efx loop. Version 2.1 with optional GK S-Volume Foot Pedal control!
Bridge: Kahler tremolo with added plastic shim to reduce stray resonance
Nut: Hamer Lubritrak
Tuning machines: Schaller
Pickups: Hamer Slammers (one humbucker combined with a single-coil, plus one single-coil)
Scale: 24 3/4"
Truss Rod: Single, adjustable forward and back
Neck Width: 1 11/16"
Body Width: 13 1/2"
Body Depth: 1 3/4"
Overall Length: 40 1/2"
Weight: 8 lbs 8 oz
Glenn Tipton and his Hamer Phantom A7
Click to enlarge
Introduction to the Hamer A7 Phantom:
The stylish Hamer Phantom A7 would perhaps be lost to guitar synthesizer history, except for its featured prominence in the Judas Priest tune, "Turbo Lover." It was guitarist Glenn Tipton who was responsible for adding the hard sync sound, played on his Hamer Phantom a7, controlling a Roland GR-700, that kicked off this tune.
The distinctive sound of "Turbo Lover" is patch 3-5 ("Lead III"), from the original (version 1.1 - 1.4) software. Full list of patches here.
The grinding sound of "Turbo Lover" (patch 1-4) is classic oscillator cross-synchronization. One oscillator is force to restart its wave cycle (period) by a second oscillator.
In the GR-700, oscillator two is set to sync to oscillator. Meanwhile, the pitch of oscillator two is swept up by a control voltage from the envelope generator.
Without the classic oscillator cross-synchronization we would simply hear oscillator two sweep its pitch in a somewhat meaningless way. With the classic oscillator cross-synchronization, we can hear the harmonic content change while the basic pitch of the oscillator follows the pitch of oscillator one, which tracks the note played on the guitar.