This two channel equaliser had been designed to be as much at home in tracking
individual instruments or sitting across a stereo mix buss to equalise the
final mix. As with other units of ours, such as The Phoenix, all controls are
clearly labelled and setting up the eq is quick and easy, so we named it after
Britains fastest bird in level flight.
THE SWIFT utilises influences of 2 classic designs of the golden days of all
valve recording with improvements to bring the specs up-to-date for todays pro
use, plus added features of our own designs.
The main electronics are based around a 1950s EMI desk but with extended top
and bass response. It had a BAXANDALL type active eq which weve kept and we
added a Presence switch to give a broad band lift to mid/hi frequencies. This
is based on one invented by Vic Keary in 1963 and used in his own mixing
The mid lift controls are based on the Pultec design and are passive. For
speedy operation and economy we have chosen just 4 frequencies, with 3 Q
Special features of ours are Hi Pass Filter, Mid Cut and Air (all passive). An
interesting (Pultec type) effect can be obtained by setting the High Pass
Filter at its last setting which combines a shelving bass cut with a filter at
very low frequency, then using plenty of bass lift at either 50 or 100 Hz.
All pots are continuously variable. We have chosen not to use indented ones
for subtlety and reliability reasons.
Gain is on switches, for comparison purposes. BYPASS switch disconnects the
electronics so you hear the unadulterated original signal. No metering is
provided as it was deemed to be just a distraction. The Swift can output + 20
dBu without noticeable distortion and its practically noiseless.
Although The Swift is influenced by old designs, our electronic design is a
great improvement on the old ones. There are only two valves per channel to
keep colouration minimal. We use modern, specially designed, Sowter
transformers and valves (tubes) not used before in this type of circuit. They
simply sound better and the technical spec is outstanding. In all fairness to
the original designers, these valves were probably not then available at the
design stage so this gives us a little advantage!
All-valve signal path using NOS and new production valves;
Combines features of the best USA and UK equalisers with Thermionic magic;
Quick and easy to operate, clearly labelled front panel
Shelving Bass and Treble lift /cut Controls at 2 frequencies each;
Mid Cut and Lift at 4 Frequencies each with Three Q combinations;
Our own Presence and Air Controls;
A Switchable High Pass Filter with a Special last position which used in
conjunction with the Bass lift can be a very interesting combination;
Adjustable gain in .75 dB steps;
Frequency response from below to well above human hearing with miniscule phase
Virtually no distortion unless driven beyond DAW capability and practically