APHEX SYSTEMS 661 TUBE COMPRESSOR/LIMITER

The Aphex Model 661 is a totally new type of compressor incorporating vacuum tube
technology with the latest innovations in audio compression. This single-channel
compressor/limiter is loaded with features, consolidating for the first time in one rack
space, three patented Aphex circuits: Tubessence?, Easyrider?, and High Frequency
Expander?.

The UNIQUE 661 CIRCUITRY 
Tubessence is a true tube circuitwhich provides that "vintage" tube sound without high
the heat, bulk, short life, fragility, and sonic variability found in traditional tube designs.
Easyrider is an Automatic mode that actually works, consisting of the Wave dependent
Compressor? (WDC) circuit which takes the guesswork out of compressing individual
instruments and vocals especially in live mixes. WDC automatically adjusts attack and
release times according to the complexity of the program material. Its No-Knee?
compression curve makes the transition into compression virtually invisible.
In the Manual mode, the Model 661 provides the full complement of compressor adjustments
such as Ratio, Attack, and Release, for maximum flexibility. Express yourself and get those
“punch“, "slap“, "fat“, "pump“, and "squeeze" sounds fast and clean.
The 661 includes the patented High Frequency Expander? (HFX) which decompresses
high frequencies, with user-adjustable ratio and corner frequency. Add "life" and "air" to your
compressed signals without fear of background noise pumping.
The Spectral Phase Refractor? restores clarity and punch to your tracks. Bass frequencies
are more defined with more apparent power. Higher frequencies also seem to gain more detail
and presence.
Use the Model 661 to control dynamics for mixdowns, protect your sound system's loudspeakers
from transients and distortion or shape the sound of individual instruments and vocals. Compress
dynamic levels without fear of reducing frequency response. Whatever type of dynamics control you're
looking for, it can be done with the Model 661 Tube Compressor / Limiter Expressor?.
 
 APPLICATIONS:
 Music Production - Improve the sound on individual instruments, vocals and mixes
 Sound Reinforcement - A roadable tube compressor/limiter in only one rack space
 Broadcast & Post Production - A great vocal processor and a powerful studio tool
 Project Studios - Improve the sound of digital recorders and workstations
 Musicians - The ultimate compressor for the professional guitar, bass, keyboard instrument rig 

 Features:
 Auto or full Manual operation. In Auto mode, compression parameters constantly change for best sound
 A true tube circuit (Tubessence) in the output stage for a "warm“, "live" and "full" sound
 HFX allows the use of high compression ratios without the loss of high frequencies
 SPR increases the apparent bass energy level, without amplitude equalization or bass boost
 Use Sidechain Access sends jacks for creative processing (de-essing and ducking)
 Stereo, dual mono or master/ slave operation for total flexibility

DBX-166XL   
Compressor - limited- gate /expander 2 εισόδων κύκλωμα overeasy,
peakstopplus, είσοδοι- έξοδοι XLR κατάλληλος για studio & live χρήση.

Overview Bring a more professional sound to your mix

Adding a dbx® 166xs Compressor/Limiter/Gate to your live sound rig or studio gives you more dynamic control to help create a more polished, professional sound. Having compression in your audio chain gives you the ability to smooth out uneven levels, add sustain to guitars and fatten up your drums. It also makes it easy to bring vocals to the front of your mix - adding greater clarity and making them stand out from the surrounding instruments. To protect your expensive amps and speakers the PeakStop® limiter provides an absolute ceiling for peak excursions or large transients that could damage your equipment.

dbx knows compressors...after all we invented them! The 166xs is the latest in a long line of the world's most successful compressors from the inventors of the technology. Its patented Overeasy® compression technology provides smooth and musical performance while the AutoDynamic™ attack and release controls, found only on dbx compressors, puts great sound within easy reach. The 166xs can operate in stereo or dual-mono modes, has true RMS power summing and features quality XLR and 1/4" TRS inputs and outputs. It cuts no corners on visual feedback with gain reduction metering and easy-to-read backlit switches.

• Error proof operation to smooth uneven levels, add sustain to guitars, fatten drums or tighten up mixes
• New gate timing algorithms ensure the smoothest release characteristics
• Program-adaptive expander/gates
• Great sounding dynamics control for any type of program material
• Separate precision LED displays for gain reduction, compression threshold and gate threshold allow quick, accurate setup
• Stereo or dual-mono operation
• Balanced inputs and outputs on 1/4" TRS and XLR connectors
• Side Chain insert
• Classic dbx® "Auto" mode

High-Definition 31-Band Stereo Graphic Equalizer with FBQ Feedback Detection System

• Professional 31-band stereo graphic equalizer for live and studio applications
• Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• Dedicated mono subwoofer output with adjustable crossover frequency
• Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc.
• Highly accurate 12-segment LED input/output metering and input gain controls for easy level setting

• Relay-controlled hard-bypass with an auto-bypass function during power failure (fail-safe relay)
• Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
• “Planet Earth" switching power supply for maximum flexibility (100
  - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
• 3-Year Warranty Program*
• Conceived and designed by BEHRINGER Germany

Description

The alphaton Feedback-Controller FC-100 is a revolutionary product for every microphone
application including wireless types. It can provide effective feedback control to any sound
reinforcement situation. It can also eliminated string feedback in guitars and bass instruments
which are equipped with piezo or condenser pickups.
The FC-100 provides 6 to 10 dB of feedback protection by analysing the incoming signal,
detecting the presence of feedback and then notching out the feedback frequency.
The FC-100 relieves the sound engineer automatically. It works dynamically and eliminates a
feedback signal before it can grow into a peak. Internally a discriminator circuit detects the
presence of regenerative feedback and triggers the automatic equaliser to insert a notch where
the feedback peak is coming up. This normally prevents other peaks from developing but if they
do, the process is repeated at high speed, thus keeping feedback under control.

Technical Data
In- and Outputs transformer balanced
max. Inputlevel + 3 dB
Gain (RS=200 Ohm, RL=2kOhm) 0 dB
Frequency Response 20 Hz ... 20 kHz, +/- 1,5 dB
Feeback Cancellation  6 ... 10 dB
Power Requirement  30 ... 48 V Phantom
Current drain ca. 8 mA
External Power Supply 9 ... 20 V DC, 3,5 mm jack, tip +
Housing Aluminium Diecast
Weight  285 grams
Dimensions  112 x 60 x 32 mm

Features
Four Independent Compressor Channels
Channels 1 and 2, 3 and 4 are stereo linkable
7 LED Gain Reduction metering
Balanced XLR Inputs and Outputs
Sidechain Insert points
Intuitive, user friendly layout
Flawless performance
 
The sheer amount of effects and signal processors necessary for today's standards
of audio production puts a great strain on the available space in equipment racks,
both in the studio and on the road.So, ARX would like to introduce the ARX Quadcomp.
An all-new upgrade of the classic award-winning ARX Quadcomp?, the very first four
channel 1 RU compressor.You?ll notice that we haven?t strayed very far from our
original design concept. The Quadcomp  is still four variable ratio Compressor/ Limiters
neatly housed in a compact all steel 1 RU package. However, all new low noise/low
distortion circuitry, better metering plus XLR inputs and outputs put the Quadcomp
in a class of its own.
More Control, Less Space
On the front panel, each channel has the 'industry standard' individual controls for Threshold,
Compression Ratio and Output, plus a new 7 LED Gain Reduction display for accurate visual
indication of the amount of gain reduction being applied to the program, and an IN/OUT
hardwire bypass switch.In addition to this, each channel has a blank numbered panel to write
on for easy confirmation of compressor assigns.
Precision Circuitry
Internally, each compressor uses Class A VCAs and true 2 pole averaging RMS/DC converters
for low distortion and accuracy, plus program dependent attack and release time, which
automatically determines optimum compressor response.
Balanced Inputs and Outputs
The rear panel has true differential Balanced XLR Inputs and Outputs for each compressor.
Each compressor has a TRS jack Sidechain access insert point, for frequency sensitive
compression, De-essing, etc. in conjunction with an external equalizer (such as the ARX EQ260).
Compressor pairs 1 and 2, 3 and 4 also have rear panel mounted Stereo Link switches for accurate
stereo tracking. When switched IN, the first channel becomes the master and controls all the functions
of the second except Output gain.
Universal AC Power
AC power range is switchable 100 to 120V, or 220 to 240V, and is connected to the unit via
a standard IEC connector, with built-in fuse and voltage switch.
Whatever the application ? Channel insert, Bus insert, Master Outputs, Monitor outputs,
Crossover outputs, the Quadcomp II?s unique High Density design, precision Low Noise circuitry
and clean uncluttered layout make it a truly useful audio tool for all applications.

T E C H N I C A L S P E C I F I C A T I O N S
Input Impedance
Balanced 20 Kohms, Unbalanced 10 Kohms
Input Headroom + 20dB
CMRR >50dB, 20 Hz?20 KHz
Output Impedance
Balanced 300 ohms Unbalanced 150 ohms
Output Level (Max) + 20 dB
Frequency Response 20Hz-20KHz ±0.5dB
Signal to Noise ratio
-93 dB Unweighted, -98 dB ?A? weighted
Distortion .015% THD @ 0dB,1KHz
Dynamic Range 108 dB
Attack and Release Times Program dependent
Metering
7 LED display: ?1, 2, 3, 6, 12, 18, ?24 dB
Sidechain Insert Impedance 10 Kohm
Power Requirements
100/120 V AC or 220/240 V AC
Weight 5 lbs/2.2 Kg
Dimensions
19“W x 1?“H x 6“D, 482 x 44 x 155mm
Input Connector type Balanced XLR
Output Connector type Balanced XLR
Sidechain Insert Connector TRS Jack

Front Panel Controls
Hardwire bypass IN/OUT switch
Threshold, Ratio and Output Gain controls
7 LED Gain Reduction display
Marker panel for labelling compressor assigns
Stereo link status LEDs
Rear Panel Connectors
Input and Output balanced XLR connectors
TipRingSleeve Sidechain insert connectors
Channels 1 and 2, 3 and 4 Stereo link switches
IEC AC mains connector with inbuilt fuse and
voltage change

Ψηφιακός δυναμικός επεξεργαστής με λειτουργίες gate και expander. Παρέχει αυτόματο έλεγχο gain, compressor και limiter για την προστασία του συστήματος.Η είσοδος είναι combo με 1/4 καρφί και XLR. Διαθέτει δυο εξόδους 1/4 καρφί και XLR.Παραμετρικό equalizer για 9 μπάντες.