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Symetrix 425 Dual Compressor-Limiter-2nd Hand-
Specifications
Input/Output
Inputs XLR-female, >30-kilohms line-level balanced bridging, >30-kilohms
unbalanced bridging.
TRS-female paralleled with XLR connector.
Outputs 300-ohm source impedance, balanced. XLR-male
TRS-female wired tip hot, ring & sleeve grounded (unbalanced), 150-
ohm source impedance.
Maximum input level +20 dBu, balanced
Maximum output level (onset
of clipping/1% THD)
+25 dBu balanced
+23 dBm balanced (600 ohms)
+20 dBu unbalanced
+18 dBm unbalanced (600 ohms)
Sidechain 100-ohm source impedance, 6800-ohm input impedance.
TRS jack, tip is return.
Compressor
Type RMS responding, soft-knee
Attack time 2ms
Release time 180ms to 2.5s long term
Auto-release time 20ms to 1s (based on 20ms tone burst)
Threshold -40 dBu to +20dBu (bypass)
Ratio 1:1 to 10:1
Limiter
Attack time 200μs
Release time 100ms
Threshold -10dBu to +20dBu
Ratio 20:1
Downward Expander
Attack time 4ms
Release time 250ms to 5s
Threshold 0dBu to -40dBu (bypass)
Ratio 1:1.5
Rev 2.0, 10/29/93 12-1
Performance Data
Frequency Response +0, -3 dB 10_Hz to 60 kHz
Distortion (THD) .04 %, +4 dBu in, +4 dBu out, 10 dB gain reduction, 1 kHz, 30
kHz low-pass filter
.01 %, +4 dBu in, +4 dBu out, 10 dB gain reduction, 20 kHz,
30 kHz low-pass filter
.02 %, +18 dBu output, 0 gain reduction, 20-20 kHz, 30 kHz
low-pass filter
Crosstalk -95 db @ 1k, -95 dB @ 10k, + 4dBu in, remaining channel
terminated in 600 ohms, 20k rolloff in analyzer.
Dynamic Range 115 dB (difference of maximum output and noise floor)
Input CMRR greater than 40 dB @ 1kHz
Output Noise -90 dBu, measured at balanced output, input terminated in
600 ohms, 20 kHz rolloff in analyzer.
Physical
Connectors input: XLR-3F, 1/4" TRS
output: XLR-3M, 1/4" TRS
sidechain: 1/4" TRS (one)
Polarity pin 2 of XLR is hot, tip of TRS jacks is hot.
Size (hwd), in & cm 1.75 x 19 x 7.25 in
4.44 x 48.3 x 18.4 cm
Weight, lbs & kg 8 lbs (3.63kg) net
11 lbs (4.6kg) shipping
Electrical
Approvals Listed by Underwriters Laboratories, Inc. Control number
2T38.
Power requirements 117V AC nominal, 105-125VAC 50-60 Hz, 12.5 Watts
maximum
230V AC nominal, 205-253V AC 50 Hz, 12.5 Watts maximum
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AKG N63E Phantom Power Supply
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Peavey EQ-215 Stereo Vintage (Used)
- 15 frequency bands stereo equalizer
- External condition: mediocre (scratches,one fader knob missing)
- Works perfectly
- Made in U.S.A.
- Price does not include V.A.T.
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PRICE DOES NOT INCLUDE VAT
Gepco Passive D.I. Box-2nd Hand-
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PRICE WITHOUT V.A.T. 23%
| PRICE WITHOUT V.A.T.
BSS Opal FCS-966 Constant Q Graphic Eq
Graphic equalisers are found in just about every sound application, from room contouring to feedback control and general audio sweetening.
Traditionally, much general eq'ing takes place on the faders alone, but this restricts the use of the faders at each end of the scale for further precision eq work. So we provided the Opal FCS-966 with separate LF and HF contour filters which can change an overall sound balance without disturbing a detailed room or loudspeaker response.
These filters are very musical gentle boost and cut shelving filters which can be used to add (or remove) room effects that change with temperature, audience numbers or humidity.
All these effects can be easily made without disturbing the critical fader settings already made.
Constant Q Filters
The modern generation of graphic eq's
uses the Constant Q topology, pioneered by BSS Audio, which means that the filter width is constant whatever the fader gain setting.
Compared to the earlier 'gyrator' style of filters, Constant Q filters provide a smoother and more predictable interaction between adjacent faders and the resulting eq curve more closely resembles the actual fader positions.
More Gain Control Per Filter
Each eq fader has +/-15dB of adjustable gain, more than many competitive graphic eq's. The faders are long-throw 45mm types for precision control.
High Pass Filter
Also provided on the FCS-966 is a sweepable high-pass filter which can be used very effectively to restrict the low-energy output for better amplifier and loudspeaker performance. Stage monitors also benefit from the application of a high-pass filter to remove bass signals e.g. from vocal-only wedges.
Metering
BSS Audio believes in providing engineers with information, and the FCS-966's 8-segment led meter shows output level and warns of signal clipping within the eq. When the unit is switched to bypass, the meter will read the input level, allowing accurate matching of the 'dry' and equalised signals using the gain control.
Centre Bypass
When any eq fader is in its centre detent position, the filter is automatically bypassed, for optimum performance.
Input/Outputs
All the inputs and outputs of the FCS-966 are electronically balanced, with optional transformer balancing. To make installation of the FCS-966 easier, we've provided three differerent interface connectors: XLR-type, 1/4" TRS jack and Phoenix/Combicon screw terminals.
Relay Bypass
The EQ IN buttons switch the EQ path
into circuit. When switched out, or power fails, a high-quality relay switches the input signal directly to the output connectors.
Control Descriptions
Faders
30 EQ filter faders on ISO centres, each with nominal +/-15dB of gain. Positive centre-detent on 45mm long-throw precision faders.
HP Filter
Sweepable high pass filter, frequency adjustable from OUT (flat) up to 250Hz.
LF Contour
Smooth shelving filter, +/-6dB of gain at 50Hz
HF Contour
Smooth shelving filter, +/-6dB of gain at 14kHz.
GAIN
Used for overall unity gain adjustment. Adjustable from - infinity to +10dB.
CLIP
Triple-point clip detector that indicates red when the internal signal is clipping at any one of three critical points.
LED Meter
Shows output signal level (input signal when eq is bypassed) from -24dBu to +18dBu in 8 steps. |
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