description Pultec EQP-1A Overview
Introduced in 1961 by Pulse Techniques, the Pultec EQP-1A is a tube-based program equalizer designed for professional recording studios. Its circuit allows simultaneous boost and cut of the same low frequency, producing a characteristic low-end response that has been widely emulated. Original hardware units remain in use in professional studios and have been modeled in numerous software plugins.
help Pultec EQP-1A FAQ
What makes the Pultec EQP-1A equalizer so unique?
The Pultec EQP-1A has a highly unique design that allows engineers to simultaneously boost and cut the exact same low frequency. This 'trick' creates a famous curve that adds both deep sub-bass weight and low-mid clarity to a track.
When was the Pultec EQP-1A introduced?
The EQP-1A was introduced in 1961 by Pulse Techniques, a company founded by Gene Shank and Ollie Summerlin. It quickly became a staple in major recording studios across the United States.
What type of technology does the Pultec EQP-1A use?
It is a passive equalizer, meaning it uses inductors and capacitors to cut frequencies, but it requires a tube-based amplification stage to restore the volume lost during the cutting process. This tube makeup gain is responsible for the unit's warm, pleasing sonic character.
Where is the Pultec 'trick' most commonly applied on a mix?
The Pultec 'trick' is most frequently applied to the bass drum (kick drum) and the master bus in modern mixing. Applying a boost and cut at 60 Hz adds incredible punch and warmth to the low end of a mix.
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