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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. |
iEQ-15 Dual 15-Band Graphic EQ with Type V? NR and AFS?
With an EQ heritage that has produced countless industry standard
patents and dates back more than 30 years, the dbx iEQ-31 easily
lives up to the dbx legacy of uncompromised sonic integrity. In
addition to unsurpassed equalization specs, the iEQ-15 also offers
the built-in necessities which include AFS? feedback Suppression,
Type V? noise reduction and PeakStopPlus? limiting. Besides
including two 15-band channels of 2/3-octave equalization, the iEQ-15
also offers +12 dB input gain range; switchable +6 or +15 dB boost/cut
range, 40mm faders, XLR, 1/4'' and Euroblock inputs and outputs,
nonconductive nylon sliders; and an intuitive user interface with comprehensive
output and gain reduction metering. As always, the inevitable result of our
meticulous attention to detail and top-quality componentry is exceptional
sound, performance, and reliability.
The iEQ series represents a major step forward in the performance of EQs.
The iEQ series is now able to offer state-of-the-art digital EQ performance
and specs with an analog look and feel. From its amazing 10Hz to 22kHz
frequency response, to its 113dB dynamic range and Advanced Feedback
Suppression (AFS?), dbx proprietary Type V? noise reduction
and PeakStopPlus? limiting, the iEQ-15 offers out of this world specifications
with a downto- earth price point. Sure to find a home in the studio, on tour and
with installed sound venues, the iEQ-15 is destined to take its rightful place in
the lineage of great dbx? signal processors that are the professional?s choice
in signal processing. With such pristine design and quality, the iEQ-15 offers
the maximum sonic flexibility in a straight forward interface and rock-solid construction.
? Advanced Feedback Suppression (AFS?)
? Type V? Noise Reduction
? PeakStopPlus? Limiting
? 2/3-octave Constant Q frequency bands
? Switchable boost/cut ranges of ±6 or ±15dB
? 18 dB per octave 40Hz low-cut filter
? ±12dB input gain range
? XLR, TRS and Euroblock Inputs and Outputs
? Internal Toroidal Transformer
? Frequency Response of 10Hz to 22kHz
? Dynamic range of greater than 113dB
? User Power Up Features
? Relay Bypass for Power Failure System Protection
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| Features | | • Dual 15-band equalizer | | | | • Constant Q | | | | • Low cut filter at 50Hz with a 12dB/Octave slope | | | | • Balanced XLR inputs and outputs | | - | | • Bal 1/4" inputs and impedance balanced 1/4" outputs | | - | | • ISO 2/3 octave frequency centers |
PRICE DOES NOT INCLUDE VAT
Longer throw faders provide more precise adjustments when equalizing a room. The SR830QXLR offers 2 channels of equalization each with 15 bands of 45mm faders. The all steel chassis construction can handle the abuse of the road, or the solace of a permanent installation.
| PRICE DOES NOT INCLUDE VAT
Features
Advanced Hardware for Superior Sound
The latest 20-bit analog-to-digital and digital-to-analog conversion technology-sampling at 44.1kHz. Frequency response extends all the way from 20 Hz to 20 kHz; dynamic range is an extraordinary 106dB; noise and distortion are neglible.
Stereo Configuration with Balanced Inputs and Outputs
A true 2-in/2-out stereo configuration that allows stereo sources to be processed without disrupting the original stereo image. Stereo inputs and outputs are all electronically balanced, with XLR and TRS phone jack connectors.
Preset, Internal, and Card Memory
180 memory locations "on board“. 80 of these are read-only memory. The remaining 100 are writable memory locations. Plug-in memory cards hold an extra 100 effect programs each.
Three-stage Effect Configuration
In addition to the main effects, the SPX990 provides programmable pre and post effects that can be used to refine and polish your sound.
In-depth Programming Power
The SPX990 has 4 programmable pre effects, 36 programmable main effects, and 3 programmable post effects.
Tempo-based Delay Time Programming
Delay time parameters can be programmed in terms of tempo or note length. Delay time can also be entered via a footswitch or MIDI clock data.
Superior Pitch Precision
The SPX990 achieves faultless pitch tracking through a new dynamic waveform analysis technique. In addition to the simple parallel pitch tracking the SPX990's "intelligent" pitch change creates appropriate harmony based on a specified key and scale type.
External Parameter Control
The SPX990 allows two selected parameters from each program to be assigned to two external MIDI controllers.
MIDI Control
The SPX990 allows MIDI selection of all programs, and real-time control of up to two selected effect parameters at the same time.
4 Pre-Effects
1. 3-band PEQ *1, 2. Compressor *1, 3. Harmonic Driver *1, 4. Compressor, Dist. and EQ *3 *1= 2 IN - 2 OUT, *2 = 1 IN - 2 OUT, *3 = 1 IN, 1 OUT
36 Main Effects: Reverb, Early Reflections, Delay and Echo, Modulation
REVERB: Reverb *2, Filtered Reverb *2, Stereo Reverb *1, Echo Room *2; EARLY REFLECTIONS: Thin Early Reflection *2, Fat Early Reflection *2, Gate Reverb *2, Reverse Gate *2; DELAY and ECHO: Delay L, C, R *2, Echo *2, Multi Tap Delay *2, Stereo Echo *1, Tempo Mono Echo *2, Tempo Stereo Echo *1, Tempo Quad Echo *1; MODULATION: Flanger *1, Dual Flanger *1, FM Chorus *1, AM Chorus *1, Phaser *1, Symphonic *1 *1= 2 IN - 2 OUT, *2 = 1 IN - 2 OUT, *3 = 1 IN, 1 OUT
Main Effects continued: Pitch Change, Pan, Complex Effects, Freeze
PITCH CHANGE: Mono Pitch Change *3, Dual Pitch Chance *2, Triple Pitch Chance *2, Stereo Pitch Change *1; PAN: Auto Pan *2, Triggered Pan *2; COMPLEX EFFECTS: Chorus and Reverb *2, Symphonic and Reverb *2, Flanger and Reverb *2, Reverb (L) / Reverb (R) *1, ER (L)/ Reverb (R) *1, Echo (L) / Reverb (R) *1, Chorus (L) / Reverb (R) *1, Pan (L) / Pan (R) *1; FREEZE: Freeze *3 *1= 2 IN - 2 OUT, *2 = 1 IN - 2 OUT, *3 = 1 IN - 1 OUT
3 Post Effects
1. 3-band PEQ *1; 2. Compressor *1, Harmonic Driver *1 *1 = 2 IN - 2 OUT
Specifications
| Frequency Response |
20 Hz - 20kHz +/-0.5 dB |
CD Player
| Dynamic Range |
Above 100 dB (typical 106dB) |
Specifications
| Hum and Noise |
Below -82 dBm (Typical -88dBm) |
| Distortion |
Below 0.005% at max. level 1 kHz |
| Input/ Number of Channel |
2 (Phone Jack) |
| Input/ Nominal Level |
+4/-20dBm (Switchable) |
| Input/ Highest Input |
+24dBm (Switchable at +4dB) |
| Input/ Impedance |
20 k ohm |
| Output/ Number of Channel |
2 (Phone Jack) |
| Output/ Nominal Level |
+4/-20dBm (Switchable) |
| Output/ Highest Output |
+18dBm (Switchable at +4dB) |
| Output/ Impedance |
150 ohm |
| A/D Conversion |
20 bits |
| D/A Conversion |
20 bits |
| Sampling Freq. |
44.1kHz |
| Preset Program |
1 - 80 |
| User Memory Program |
1 - 99,00 |
| Optional Memory Card |
1 - 99,00 |
| Front Panel/ Control |
Input Level (L,R), Data Entry |
| Front Panel/ Keys |
Function Key x 6, Page Select Key x 2, Memory, Store, Edit, Bypass |
| Front Panel/ Display |
2 ch. 8 segment LED (Level Meter) 6 segment LED (Mode Indicator) 7 segment LED (Memory No.) Memory, Edit, Bypass indicators 24 chara x 2 Line LCD |
| Front Panel/ Slot |
Memory Card |
| Rear Panel/ Connectors |
Input L/R (XLR x 2, Phone jack x 2 Output L/R (XLR x 2, Phone jack x 2) MIDI In, Thru/Out (DIN 5P x 2) Trigger (Phone Jack x 1) Bypass or INC/DEC (Phone Jack x 1) |
| Rear Panel/ Switch |
In/Out Level Switch (+4dB/ -20dB x 2) MIDI Thru/ Out Switch |
| Power Requirements |
US and Canadian Models: 120V, 60Hz British Model:240V, 50Hz General Model:230V, 50Hz |
| Power Consumption |
25W |
| Dimensions |
480 x 46 x 324.4 mm |
| (W x H x D) |
(18-7/8" x 1-13/16" x 12-3/4“) (including attachments) |
| Weight |
4.6 kg (10lbs. 2oz) |
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* 2 channel 15 2/3 octave band graphic equalizer
* 25Hz - 16kHz frequency control * Constant Q circuitry
(3% frequency accuracy) * Selectable 6dB or 12dB control
* Variable level control * By-pass switch * Overload threshold LED (5dB below clipping) * Ground lift switch * XLR & 1/4" TRS balanced Inputs/Outputs * Power: Selectable 120V/220V voltage
* Dimensions: 1.75" H x 19" W x x 8.5" D / 44.5mm x 483mm x 216mm - 1 space r.m. * Weight: 4.5 lbs. / 2.5kg
XEQ-152 Specifactions:
* Input type: Active balanced / Unbalanced * Output Impedance: |
The AD2055 combines 100% discrete, pure class A signal amplifiers with state-of-
the-art passive and active filter topologies. The AD2055's unique circuitry delivers
very high resolution transient detail at the operational extremes of real world equalization
demands. The AD2055 auto-bias DC servo loop control eliminates the need for all
interstage capacitor coupling. The AD2055 breathes life into all musical performances!
AD2055 FEATURES
Pure Class A, 100% discrete design
Smooth musical detail and sonic excellence
Minimum audio signal path
Dual mono operation
Transparent active and passive filter design
High headroom +30dB Very low noise -94dB
Fully balanced inputs and outputs
DC coupled, no transformers in audio path
Switched frequencies in high and low bands
Mid bands use X10 frequency for extended range
Wide bandwidth -3dB 1Hz to 450kHz
Low distortion less than 0.5% THD and IMD
All signal routing with sealed silver relays Conductive
plastic potentiometers for low noise
External 150W toroidal power supply 100% discrete
power supplies for audio path
Long lasting, stainless steel hardware
SONIC EXCELLENCE
The Avalon AD2055 Pure Class A music equalizer is the most powerful, low noise
parametric equalizer available today. Designed to optimize absolute signal integrity
and musical performance, the AD2055 combines the best of active and passive filter
topologies with sonic excellence unequaled by lesser designs. The AD2055 is the
perfect solution for two buss music-program equalization, special instrument EQ and
FX applications and ultra high performance mastering studio's.
Features include state-of-the-art, balanced 100% discrete, Pure Class A signal amplifiers,
practical user features and rugged hardware designed to deliver true high performance
audio for many years.
PASSIVE-ACTIVE FILTER DESIGN
Avalon equalizers feature the unique combination of both active and passive filter EQ designs.
This special combination enables the AD2055 to deliver high speed transient detail at the
operational extremes of real-world equalization demands. The passive high and low bands offer
alternate musical tone range to the full function active parametric mid bands. Passive equalizers
have long been a favorite with music lovers around the world. Full bodied, powerful (up to +/-32dB,
64dB range !) and sweet frequency selections are the benefits of the passive high-low EQ bands.
The full bandwidth twin mid bands provide variable frequency selection (X10 frequency multipliers
for very wide range), variable Q (width) and amplitude control.
MINIMUM SIGNAL PATH DESIGN
Avalon's advanced true symmetry design offers high-voltage, large headroom, extended bandwidth
and very low noise. The use of 100% discrete, Pure Class A signal amplifiers give the serious music
professional unlimited sonic character and a natural harmonic detail that enhances the program
material and becomes one with the music itself. The Avalon AD2055 breathes life!
AD2055 SPECIFICATIONS
Circuit Topology High-voltage 100% discrete, balanced and symmetrical
Class A
Output Gain Range Unity Gain
Maximum Input Level +30dB balanced XLR pin 2 hot
Maximum Output Level +32dB balanced 600 ohms, DC coupled, high-current
discrete Class A
Input / Output Type XLR type, pin 2 hot balanced
Noise 20kHz Unweighted -94dB (EQ in)
Distortion THD, IMD 0.5% (typical 0.05% at +6dB 1kHz)
Frequency Response -3dB 1Hz to 450kHz (input band limited)
Equalizer Type Passive high and low bands plus two fully parametric mid
bands
Bypass Hard-wire relay bypass for equalizer in-out
Low Band F1 Passive, amplitude to -32dB to +32dB shelf or peak-dip curve
F1 Frequency Range Switched 10 position 18Hz, 25, 30, 50, 72, 100, 150, 215,
300, 450Hz
Mid Band F2 Active, amplitude to -16dB to +16dB peak-dip curve
F2 Frequency Range Variable 35Hz to 450Hz (x10) 350Hz to 4k5Hz, Q (width)
0.3 to 3.0
Mid Band F3 Active, amplitude to -16dB to +16dB peak-dip curve
F3 Frequency Range Variable 160Hz to 2k0Hz (x10) 1k6Hz to 20kHz, Q (width)
0.3 to 3.0
High Band F4 Passive, amplitude to -26dB to +26dB shelf or peak-dip curve
F4 Frequency Range Switched 10 position 1k5Hz, 2k5, 3k5, 5k, 7k2, 10k, 12k5,
15k, 20k, 25kHz
AC-DC Power External AC supply, 150w toroidal transformer, 4 pin cable 90v
isolated,
(B2T Power Supply Included) 100-240v selectable 50/60Hz, 150w max
Dimensions 19 x 3.5 x 12 in (482 x 88 x 305mm)
Shipping weight 30lbs (13.6 kg)
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