Hierin passen de compressors, die te gebruiken zijn als mono compressor tijdens opname of mix of (indien men er twee bouwt) als buscompressor of als 2 aparte mono compressors tijdens de mix. De compressors kunnen ook kant en klaar aangekocht worden voor zeer interessante prijzen.
In deze workshop leert U solderen en bouwt U een uitstekende vintage studiocompressor (zie hieronder voor meer informatie).
Voor afspraak, inschrijving of meer info, vul Uw e-mailadres in en we nemen zo spoedig mogelijk contact met U op. U kunt continu inschrijven voor de workshops en cursussen, we beginnen als we genoeg inschrijvingen hebben. Schrijf nu in, vraag meer info of kom even langs.
Technical Specifications Compressor
| Input section: | |
| Impedance | >10k Ohm differential (electr. balanced) |
| Nominal input level | +4dBm |
| Headroom | + 23 dBm |
| CMRR | >-50 dB, 20Hz-20kHz |
| Connectors | 6,3 mm jack |
| Output section: | |
| Impedance | balanced to drive 600 Ohm loads |
| Max. level | +28 dBm into 600 Ohm load |
| Nominal operating level | +4 dBm |
| Connector | 6,3 mm jack |
| Frequency response | ±0,5dB / 5Hz-68kHz |
| Noise | > -96dB (Awght) |
| Distortion THD | balanced + 21 dBm 0,028% |
| Operating: | |
| Compression/limiting | variable attack, release, threshold, ratio, gain |
| Stereo version | fully linked stereo units: master / slave |
| Metering: | LED display – 8x LED ( VU meter in Busscompressor) |
| General: | |
| Unit 3HE | 45 mm wide |
| 8 units in rack | Size 482 x 140 x 340 mm (19 inch rack mountable) |
| Buscompressor 1U | Size 482 x 140 x 340 mm (19 inch rack mountable) |
| Electricity supply | 220 V, 50 Hz |
Operating
Threshold : -24dB to infinity
Ratio : 1:1 to 20:1 variable
Attack : 50uS to 5 mS
Release : 50mS to 5 Sec – programme related
Blend : mix between input and compressor output (parallel compression)
Output Gain : -20dB to +20dB
Optional Peak limiter: Threshold : +6dB – Ratio : 50:1 – Attack : 50uS – Release : automatic
Operational controls
Threshold sets the point at which gain reduction commences, controls the signal level entering the side-chain and not the input level.
Ratio is variable between 1:1 and 20:1
Attack is variable between 50uS to 5mS, controls the speed at which the compressor responds to a rise in input signal level. A slow attack time will allow transient peaks to escape compression.
Release 50mS to 5Sec, is the time taken for the compressor to recover from gain reduction. Programme signals are complex, so a complex release characteristic is required for optimum results. Fast transients require a fast release time to avoid over limiting effects, whereas normal programme material should be user adjustable. In addition to compressor contains circuits which prevent partial recovery between waveform peaks, thus eliminating low frequency distortion when using fast release times.
Blend With the ability to do in-module parallel mixing of the dry signal and the compressed signal, the engineer can now enjoy the parallel or “side chaining” of an instrument with itself and come up with the perfect blend of the original and compressed signal without the problems associated with in-the-box latency.
Output Gain -20dB to +20dB – to make up signal level which is lost during compression.
Bypass switch is a hard bypass of the compressor.
FF/FB switch In addition to the Input/Compressor Blend knob, the D 910 has many other unique features: The ability of being able to switch between Feed Back and Feed Forward compression. This feature gives the engineer the freedom to combine the smooth nature of the Feed Back type of compression with the agressive effect of Feed Forward compression.
Side chain listen switch (option) for monitoring any eq or other effect which may be applied to the side-chain.
Peak limiter switch (option) A separate switchable peak limiter, connected after the output gain control, complements the operation of the compressor section by allowing slow attack times and/or gentle compression slopes to be used, whilst giving complete protection from overload. The limiter has an adjustable internally preset threshold, fast attack (50uS), automatic programme related release and a ratio of 50:1. Gain reduction from limiting is indicated on the display along with compression, and in addiction a LED indicates the onset of limiting.
Stereo link switch on the master compressor and a LED on the slave unit couples the control circuits of both compressors to prevent image shifting when treating stereo material on a final mix. The peak limiters can be used on top but they remain independent, only limiting the peaks on the signal in the channel where they appear. Operational controls should be set the same on both channels when linked.
