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Colour
Melna
Features
- Exact reissue of API’s original 525 from the early 70’s
- Peak detecting “feedback” compressor/limiter
- Variable Threshold and Output levels
- Unique “Ceiling” control combines key functions
- Analog VU meter for monitoring gain reduction
- 4 Switchable release modes
- De-Ess function
- Traditional API fully discrete circuit design
- Active Balanced Input/Output
- Hardwire bypass
Originally released in the 70’s, the API 525 is a “feedback” type compressor. An input (threshold) control and output (make-up gain) control are provided, along with an additional “Ceiling” fine-tune function which can increase gain reduction (lower threshold) while simultaneously raising output level to match, so the user can alter dynamics “on the fly” without level changes. A compression/limit switch sets ratio at either 2:1 or 20:1. Attack time is as fast as 15u/s. Four auto release modes are offered via two switches, 0.1s, 0.5s, 1.5s, & 2.0s. A De-Ess function inserts an inverse vocal energy curve filter in the detector for effective sibilance/pop reduction. The 525 design has been taken from the original blue prints and spec control drawings from the API archives.Release times vary with frequency, with high frequency / full bandwidth content released faster than lower frequencies for natural envelope tracking. Attack time is fixed, chosen to catch the fastest peaks, without “pumping”. Equally useful as a tracking, mixdown or program compressor/limiter, the 525 utilizes “vintage” dynamics control and an easy to use multi-function control set. The 525 has a hard-wire bypass switch, a balanced input, and a pinout that is the same as all the other 500 series modules. Two or more 525s can be linked for multi-channel compression.The API 525 Compressor makes use of the 2510 and 2520 op-amps and exhibits the reliability, long life, and uniformity which are characteristic of all API products.
| Specifications | |
| > 30 K Ohms, Balanced | |
| 100 Ohms, Transformer coupled, Balanced | |
| -15 dBu to +20 dBu | |
| 25 dB | |
| 98 dB below +10 dBu output, at 10 dB of Compression | |
| 0.5% Max, 30 to 20 kHz | |
| 15 micro seconds | |
| .1, .5, 2.0, 2.5 seconds | |
| Inversion of the Voice Energy Curve | |
| Compression, 2:1, Limit, 20:1 | |
| Compression or Limiting-Illuminated Analog dB meter, shows Gain Reduction |
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| ±.5 dB, 30 to 20 kHz | |
| ±12/18 Volts/DC, @80 ma. | |
| 1.5″ X 5.25″ X 7.5″ Deep | |
| 4.5″ X 6.5″ X 10″ | |
| 1.77 lbs. | |
| 2.17 lbs. | |
More Info: API Audio 525
