Buzz Audio Tonic E.Q - 500 Series Preamp
Classic Music Inductor EQ
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Just the Tonic!
A simple but effective 3 band equaliser for the 500 Series system, the Tonic utilizes real inductors (chokes) in the high and low bands. These two bands are switchable shelf or bell modes and have 2 turn over frequency choices. The sweepable mid band features the Constant Amplitude Phase Shift circuit proposed my Mr Steve Dove in 1981 which has a very fluid sound. A high pass filter is also provided with two frequency choices (50Hz or 80Hz) selected by the user with jumpers on the pcb.
As with the other 500 Series modules on this range, the signal path is True Class A with a Lundahl output transformer. The Tonic has a big grunty sound with stacks of headroom making it an excellent tracking equaliser and a perfect partner to our Elixir mic preamp. Add an Essence compressor and you have a complete Buzz Audio channel strip!
The low band and high band have centre detent pots for +/-15dB of boost/cut range. Toggle switches select bell or shelf mode on these bands. The low band turnover frequency can be selected to 60Hz or 120Hz and the high band 5kHz or 11kHz. The mid band frequency range of 75Hz to 11.5kHz is selected with a x1/x10 range switch. A switch for wide or narrow bandwidth (Q) selection and a centre detent pot sets the mid +/-15db boost/cut range. Additional toggles for Bypassing the module and engaging the High Pass Filter and a Peak level LED complete the picture.
The Tonic module will physically fit into all 500 Series racks, but it should be noted the current draw is 120mA, which is higher than most other 500 Series modules. This should not be an issue with most modern racks, but with older 500 Series racks it may mean only one or two Tonics should be fitted along with other modules. If in doubt please feel free to contact us, we are happy to help.