API Audio 1608 Recording Console - Manual (Page 18)

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2.7 560 Discrete 10-Band Graphic Equalizer
The classic API 560 Equalizer is installed on channels 13-16 in the standard 1608 configuration.
The API 560 was created to fit all applications for the professional engineer. For most of the 70's
and 80's, every remote recording console that API manufactured used this versatile graphic EQ.
It is also ideal for studio and live sound applications, where a professional result is required. The
current 560 design has been taken from the original blue prints and spec control drawings from
the API archives.
The large number of available EQ bands make the 560 an ideal companion to parametric EQ, as
well as ideal for signal sweetening and room tuning. Not lacking in features, the 560 makes use
of API's unique "Proportional Q" design introduced by API in the 60's, intuitively widening the
filter bandwidth at lower boost/cut levels and narrowing it at higher settings. In addition, boost
and cut characteristics are identical, so previous actions can be undone.
The extraordinary headroom made possible with API's proprietary 2520 op-amp offers
predictable and wonderful "analog" performance under duress. With a wider range of 500
mounting options, the 560 is a valuable asset to your performance-critical applications.
The 560 Graphic Equalizer exhibits the reliability, long life, and uniformity which are
characteristic of API products.
WARNING – WARNING – WARNING – WARNING – WARNING
The use of NON-VPR Alliance approved 500 series modules in the 1608 is vehemently
discouraged, and may cause operational difficulties with the console. Improper
operation, excessive current draw and poor module fit are all potential issues with
these devices.
For the most recent list of VPR Alliance approved modules, please visit
www.apiaudio.com .
API reserves the right to deny warranty claims when non-VPR Alliance 500 series
modules are used.
Features
 10 bands of API proprietary equalization
 Familiar graphics operation on one octave centers
 12 dB of boost/cut per band
 "Proportional Q" narrows filter Q at extremes
 Additional resolution within the ±4 region
 Center detent for reliable reset
 Silent bypass button
 Re-issue of the 1969 API 560 EQ
Originally conceived for use in API Consoles of the 60's and 70's, the API
560 is a unique device designed to accomplish tasks that no other EQ can. It
delivers that "one-of-a-kind" API sound, precision easy set filtering, and high
headroom in a very small package. Extremely fast to set and reset using
accurate zero detents, the curve shaping potential of the 560 is unmatched.
At home both in field recording and the studio environment, this "new-old"
560 is true to the original 560 with improved resolution in the critical area of
±4 dB. Incorporating API's exclusive circuitry and proprietary components
(such as the legendary 2520 op-amp), the 560 artfully blends the past with
present—layout with function.