The Avalon VT-747SP combines a creative STEREO tube-discrete Class A spectral-opto-compressor with a musical six band program equalizer, L-R output level and gain reduction metering and internal regulated power supplies in a 2U space. Ideal for high performance DAW input signal conditioning, stereo buss compression-EQ, stereo keyboards and analog mastering applications. SPECTRAL-OPTO-COMPRESSIONThe opto-compressor features a […]
The Avalon VT-747SP combines a creative STEREO tube-discrete Class A spectral-opto-compressor with a musical six band program equalizer, L-R output level and gain reduction metering and internal regulated power supplies in a 2U space. Ideal for high performance DAW input signal conditioning, stereo buss compression-EQ, stereo keyboards and analog mastering applications.
SPECTRAL-OPTO-COMPRESSION The opto-compressor features a minimum signal path design utilizing sealed silver relays for all signal routing and by pass functions. The optical attenuator acts as a passive level controller with a Class A, variable gain make-up amplifier. Full dynamic control from soft compression to hard-knee limiting can be achieved with master threshold, ratio-compression, attack and release controls. Gain reduction indication is a large analog VU meter. Low frequency and high frequency contour parametric spectral controls can be routed into the side-chain path for enhanced frequency dependent compression with variable frequency and threshold levels. SC listen provides side-chain listen mode for monitoring. SIX BAND PROGRAM EQUALIZER The VT-747SP equalizer utilizes 100% discrete, Class A high-voltage transistors for optimum sonic performance. The six band STEREO program EQ incorporates the smooth characteristics of an all passive design. The frequency turnover, Q and amplitude ranges have been carefully chosen for each band to provide the most natural harmonic balance and lowest phase change while offering simple and effective tone control. The EQ can be placed pre or post the opto-compressor for enhanced effects. TSP – TWIN SIGNAL PATH The VT-747SP features TSP which gives you the choice of either tube tone or the classic, Class A discrete transistor sound by exchanging, three (3) high-voltage dual triode tubes with discrete amplifiers in the opto-compressor and primary output stages. INPUT-OUTPUT and METERING Fully balanced DC coupled, Class A discrete amplifiers are utilized for the input and output drive interface with+36dB input headroom. A high quality analog VU meter indicates accurate gain reduction. Twin 60dB range LED meters provide fast L-R output status of all levels.
VT-747SP FEATURES Stereo Class A opto-compressor with spectral control Stereo Class A six band discrete passive program EQ TSP twin signal path, vacuum tube bypass Low noise -92dB Fully balanced Class A input and DC coupled outputs Stereo dynamic 60dB high resolution output meters High quality analog VU meter for gain reduction High headroom+36dB input before overload Spectral side-chain monitor for pre listen EQ pre-post selection for opto-compressor Sealed silver relays for all signal routing Internal discrete regulated power supplies Military spec vacuum tubes for long life and low noise
VT-747SP SPECIFICATIONS Circuit topology Three (3) dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A mode. Input gain range Balanced, Class A, 20k ohms, -20dB to +16dB with high gain switch Maximum input level +36dB balanced XLR pin 2 hot Maximum output level +30dB balanced 600 ohms, DC coupled, discrete Class A Output type XLR connector, output trim gain -45dB to +6dB Noise 20kHz unweighted -92dB Distortion THD, IMD 0.5% Frequency response -3dB 1Hz to 200kHz Gain reduction meter High quality, illuminated gain reduction meter 0dB to -20dB range Output meter Twin 20 segment LED VU meters with -27dB to +30dB range Compressor type Optical passive attenuator Make-up gain Variable 0dB to +10dB stereo tracking Threshold – Ratio Threshold variable -30dB to +20dB, ratio-compression variable 1:1 to 20:1 Attack – Release Attack variable 2mS to 200mS, release variable 100mS to 5 seconds Side-chain spectral contour Variable threshold -15dB to +15dB, frequency 70Hz to 9kHz twin ranges Equalizer type Discrete Class A, passive design optimized for full range program material Frequency bands (6) Variable amplitude LF +/-24dB 15Hz shelf response Variable amplitude MF1 +/-8dB 125Hz selected Q response Variable amplitude MF2 +/-4dB 500Hz selected Q response Variable amplitude MF3 +/-4dB 2kHz selected Q response Variable amplitude MF4 +/-10dB 5kHz shelf response Variable amplitude HF +/-20dB 32kHz shelf response AC power Internal toroidal 100v to 240v, 50-60Hz selectable, 70 watts maximum Dimensions 19 x 12 x 3.5 in (482 x 305 x 89mm) Weight 22lbs (10kg) Dimensions-shipping carton 21 x 18 x 8 in (533 x 457 x 203mm) Weight-packed 26lbs (11.8kg)
Weight
11.80 kg
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The Avalon VT-747SP combines a creative STEREO tube-discrete Class A spectral-opto-compressor with a musical six band program equalizer, L-R output level and gain reduction metering and internal regulated power supplies in a 2U space. Ideal for high performance DAW input signal conditioning, stereo buss compression-EQ, stereo keyboards and analog mastering applications.
SPECTRAL-OPTO-COMPRESSION The opto-compressor features a minimum signal path design utilizing sealed silver relays for all signal routing and by pass functions. The optical attenuator acts as a passive level controller with a Class A, variable gain make-up amplifier. Full dynamic control from soft compression to hard-knee limiting can be achieved with master threshold, ratio-compression, attack and release controls. Gain reduction indication is a large analog VU meter. Low frequency and high frequency contour parametric spectral controls can be routed into the side-chain path for enhanced frequency dependent compression with variable frequency and threshold levels. SC listen provides side-chain listen mode for monitoring. SIX BAND PROGRAM EQUALIZER The VT-747SP equalizer utilizes 100% discrete, Class A high-voltage transistors for optimum sonic performance. The six band STEREO program EQ incorporates the smooth characteristics of an all passive design. The frequency turnover, Q and amplitude ranges have been carefully chosen for each band to provide the most natural harmonic balance and lowest phase change while offering simple and effective tone control. The EQ can be placed pre or post the opto-compressor for enhanced effects. TSP - TWIN SIGNAL PATH The VT-747SP features TSP which gives you the choice of either tube tone or the classic, Class A discrete transistor sound by exchanging, three (3) high-voltage dual triode tubes with discrete amplifiers in the opto-compressor and primary output stages. INPUT-OUTPUT and METERING Fully balanced DC coupled, Class A discrete amplifiers are utilized for the input and output drive interface with+36dB input headroom. A high quality analog VU meter indicates accurate gain reduction. Twin 60dB range LED meters provide fast L-R output status of all levels.
VT-747SP FEATURES Stereo Class A opto-compressor with spectral control Stereo Class A six band discrete passive program EQ TSP twin signal path, vacuum tube bypass Low noise -92dB Fully balanced Class A input and DC coupled outputs Stereo dynamic 60dB high resolution output meters High quality analog VU meter for gain reduction High headroom+36dB input before overload Spectral side-chain monitor for pre listen EQ pre-post selection for opto-compressor Sealed silver relays for all signal routing Internal discrete regulated power supplies Military spec vacuum tubes for long life and low noise
VT-747SP SPECIFICATIONS Circuit topology Three (3) dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A mode. Input gain range Balanced, Class A, 20k ohms, -20dB to +16dB with high gain switch Maximum input level +36dB balanced XLR pin 2 hot Maximum output level +30dB balanced 600 ohms, DC coupled, discrete Class A Output type XLR connector, output trim gain -45dB to +6dB Noise 20kHz unweighted -92dB Distortion THD, IMD 0.5% Frequency response -3dB 1Hz to 200kHz Gain reduction meter High quality, illuminated gain reduction meter 0dB to -20dB range Output meter Twin 20 segment LED VU meters with -27dB to +30dB range Compressor type Optical passive attenuator Make-up gain Variable 0dB to +10dB stereo tracking Threshold - Ratio Threshold variable -30dB to +20dB, ratio-compression variable 1:1 to 20:1 Attack - Release Attack variable 2mS to 200mS, release variable 100mS to 5 seconds Side-chain spectral contour Variable threshold -15dB to +15dB, frequency 70Hz to 9kHz twin ranges Equalizer type Discrete Class A, passive design optimized for full range program material Frequency bands (6) Variable amplitude LF +/-24dB 15Hz shelf response Variable amplitude MF1 +/-8dB 125Hz selected Q response Variable amplitude MF2 +/-4dB 500Hz selected Q response Variable amplitude MF3 +/-4dB 2kHz selected Q response Variable amplitude MF4 +/-10dB 5kHz shelf response Variable amplitude HF +/-20dB 32kHz shelf response AC power Internal toroidal 100v to 240v, 50-60Hz selectable, 70 watts maximum Dimensions 19 x 12 x 3.5 in (482 x 305 x 89mm) Weight 22lbs (10kg) Dimensions-shipping carton 21 x 18 x 8 in (533 x 457 x 203mm) Weight-packed 26lbs (11.8kg)
Product Features:
Ultra-high resolution 24-bit/96 kHz mastering processor featuring 32/40-bit floating-point DSP technology Audiophile 24-bit/96 kHz A/D- and D/A converters offering 113 dB dynamic range 4 concurrently selectable EQ modules (31-band graphic EQ, 10-band parametric EQ, Feedback Destroyer plus 3 Dynamic EQs per stereo channel) Ultra-high resolution 61-band real-time FFT analyzer with additional auto EQ function for room and loudspeaker equalization Unique VPQ (Virtual Paragraphic EQ) option allows parametric control of graphic EQs State-of-the-art compressor/expander with peak limiter per stereo channel, additional stereo imager and stereo delay for delay line applications Multi-functional level meters (peak/RMS, VU and SPL meter with dBA/dBC weighting via RTA/Mic input) 64 user memories for complete setups and/or individual module configurations Separate mic/line input with phantom power for RTA and Auto-EQ applications Balanced inputs and servo-balanced outputs with gold-plated XLR connectors, stereo aux output, AES/EBU and S/PDIF inputs and outputs (XLR and optical) Professional Wordclock input and MIDI connections for full remote control, preset dumps and system updates Open architecture allowing future software updates via MIDI "Planet Earth" switching power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving High-quality components and exceptionally rugged construction ensure long life Conceived and designed by BEHRINGER Germany
Psychoacoustic Bass Enhancement Unit with Renaissance Compressor, MaxxBass, and L2
Bass Boost for Live Sound, Broadcast, Mastering & Post Production
They say that in electronics there's no new technology - the only changes
will be in size and applications. Things will simply keep getting smaller
while doing more. This is certainly true in music (just think about what an
iPod can do), but as we design smaller playback systems with small speakers,
there are also some tradeoffs, particularly in music. Clever cabinet designs and
high-excursion drivers can get you only so far. Any audio engineer trying to extract
bass from real-world components must eventually face the laws of physics:
All things being equal, small boxes and speaker cones can't move enough air
to produce a room-shaking low end. When working with systems tiny enough to
toss in a shoulder bag, the challenge is even more formidable. Interestingly enough,
Waves MaxxBCL has a new solution to this problem using a very old concept.
Waves MaxxBCL at a Glance:
MaxxBass? Bass Enhancement adds deep bass sound without adding bass frequencies
Waves Renaissance Compressor
L2 Ultramaximizer Peak Limiter
24-bit/96kHz resolution with 48-bit, double-precision processing
Supports optical, coaxial S/PDIF, AES/EBU, balanced and unbalanced line-level analog signals
MaxxBass Bass Enhancement
Waves' patented algorithm adds stunning bass sound without adding bass frequencies,
delivering a bigger bottom end. MaxxBass? allows your audience to hear bass frequencies
lower than physically present by applying psychoacoustic principles: Even though we
can hear a bass guitar from a small speaker, we don't actually hear the fundamental
frequency because the speaker can't produce a pitch that low. Instead, we hear the
harmonics that the speaker can produce, and this causes the brain to create the "missing
fundamental." MaxxBass? takes this well-known psychoacoustic phenomenon to the
maximum, giving you the ability to extend the perceived frequency response of a system
about two octaves below its physical limitation.
To accomplish this, the signal is split: high frequencies are passed to the output (to be
added back to the bass). The bass signal is analyzed and a specific series of upper
harmonics are created. Because the dynamics of the original bass are duplicated in these
harmonics, the result is the most natural sounding bass enhancement available. The
MaxxBass? harmonics and the original bass can be mixed in any proportion at the output.
To provide more control, a high-pass filter can be switched in, allowing the harmonics only to
be passed along as an "image" of the original bass frequencies, which is useful when working
with a system with known low-frequency limitations to avoid over-excursion of the speaker drivers.
Renaissance Compressor
Designed to provide the classic warm sound of analog compressors, the legendary
Renaissance Compressor controls dynamics with studio-style warmth that flatters
full mixes, vocals, or instruments. Controls include selection of vintage-style Opto
or modern Electro compression, and threshold, ratio, and attack controls. Waves
ARC? (Automatic Release Control) algorithm dynamically optimizes the compressor's
release value for a wide-ranging input. ARC? reacts much the way a human ear
expects, and can produce increased RMS level with greater clarity.
In general, the release is faster for peak transients and slower for the overall RMS
level. The ARC? system varies the release time to fit the ear's expectations while
increasing RMS, and without creating distracting artifacts. In this way, the
Renaissance Compressor can serve as a leveler plus a fast compressor simultaneously.
L2 Ultramaximizer Peak Limiter
Heard on countless hit records and soundtracks, the L2 Ultramaximizer puts sound
up-front with breathtaking transparency. The L2 is capable of a very fast, overshoot-free
response. Once the limiter threshold has been set, you can define the actual peak level
that the processed signal will reach. Once set, limiting and level re-scaling becomes a
one-shot process. The L2 can significantly increase the average signal level without
introducing any audible side effects. Yet there is plenty of range to recreate "vintage"
effects such as level pumping or severely limited dynamic range if you like.
Pristine Sound Quality
The MaxxBCL offers 96kHz, 24-bit resolution with a 48-bit, double precision internal
processing path and a dynamic range of ~125dB. The totally passive analog input
path to the ADC uses Jensen transformers, while the output path also features Jensen
analog output transformers. The unit is galvanic-isolated, which prevents ground loops
and allows it to operate in electrically unstable environments. Waves MaxxBCL combines
the highest quality converters available with unequalled processing algorithms to offer you
astonishing new power in bass enhancement, dynamics processing, and format conversion
(analog-to-digital, digital-to-analog, and digital re-quantization).
Versatile Connections
The MaxxBCL supports optical, coaxial S/PDIF, AES/EBU, balanced and unbalanced
line-level analog signals. MaxxBCL features a unique set of input and output trim settings:
analog input headroom can be set from 9dB above 0dBu to 24dB in six precise steps
(using the rear-panel selectors). Analog output level is similarly set with a separate
rear-panel trim pot offering you the ability to connect between devices with a wide range
of input and output levels.
Waves MaxxBCL Features:
User Interface:
Clear backlit displays, meters, and buttons are visible in all lighting conditions
THD + Noise: ? 0.0006 % @ 1kHz @ -1dBFS
Precision metering with resettable peak hold options (2 sec, infinite)
Accurate, wide-range metering covering 90dB for input and output
and 12dB for compressor and limiter attenuation
Quick access independent bypass on each processing block
Tactile feedback knobs
Four easy store/recall user presets
Input / Output:
Analog, AES/EBU, S/PDIF
Independent rear-panel input and output headroom calibration in six steps
(+9, 12, 15, 18, 20, and 24 dBu)
Passive analog inputs to the A-to-D converters using Jensen analog input transformers
Jensen analog output transformers
High-performance IDR dithering to 16- or 24-bit output
Precise input level setting using 1% resistor networks
Processing:
48-bit end-to-end internal processing path
Switchable compressor/MaxxBass? order
MaxxBass:
Adjustable processor frequency from 25 to 120Hz
Adjustable harmonic mix percentage from 0 to 100%
High-pass Filter "harmonics only" option
Compressor:
Opto/Electro mode selection
Threshold (0-60dB), Ratio (1:1-12:1), and Attack (0.5, 1, 2, 5, 10, 20, and 50 ms) controls
Proprietary ARC? Automatic Release Control
Automatic gain makeup
Limiter:
Overshoot-free look-ahead processing
Adjustable Threshold (0-18dB)
Adjustable Output Ceiling (0-18dBFS)
In today's recording and sound reinforcement environments, the need for multiple channels of high quality, easy to use compression is growing rapidly. The new dbx® 1046 is designed to provide the audio professional with just that: 4 channels of great sounding dbx compression for a variety of applications. Incorporating the industry standard dbx designs and the latest available manufacturing techniques, the dbx 1046 provides pristine sonic quality with that classic dbx sound.
The 1046 provides 4 channels of smooth classic dbx OverEasy® or Hard Knee compression that are perfectly suited for use on individual tracks of your multitrack recorder, and in virtually all applications the separate channels can be individually interfaced and used for entirely independent purposes. Additionally the newly developed PeakStopPlus™ is ideal for protecting your system from the oppressive peaks that can take out valuable drivers in your sound reinforcement rig or studio monitors.
All four channels have the following controls:
Threshold - allows you to set the level at which the compressor starts affecting the gain
OverEasy - allows you to select between soft compression for overall gain control or Hard Knee compression based on the characteristics of the original dbx 160.
Ratio - allows you to set the slope of gain reduction affecting the signal over the threshold level.
Input/Output Meter - allows you to set the meter to check the input and output levels for maximum signal-to-noise ratio and best level matching.
Output Gain - allows you to add make-up gain or to adjust the output level for that channel to match the next device's input gain.
Bypass - hard wire bypass allows you to hear how the compressor is affecting your signal.
PeakStopPlus - allows you to set the maximum signal level you want to pass through this channel. While it's virtually impossible to eliminate distortion, the PeakStopPlus circuit does it gracefully and effectively with minimal distortion.
Stereo Link - allows you to link channels 1&2 and 3&4 for two channels of true stereo compression.
All four channels feature balanced gold plated XLR and 1/4" inputs and outputs, and switchable +4dBu or -10dBV operating level to interface each individual channel with any other device.
So whether you need to control the level, placement in the mix, or overall characteristics of 4 independent signals or control the gain leveling on a couple of stereo pairs, the dbx 1046 is for you.
Four independent channels of operation, stereo linkable in two pairs
PeakStopPlus™ limiting control for setting maximum allowable level regardless of compressor settings
Independent Threshold and ratio controls
Switchable OverEasy® or Hard Knee compression
Classic dbx® compression
Differentially balanced gold-plated XLR and 1/4" inputs and outputs
True RMS level detection
Precision metering of input level, output level, and gain reduction
Dual True stereo or quad mono operation
Switchable +4dBu or -10dBV operation per channel
Input Connectors
XLR and 1/4" TRS (Pin 2 and tip hot)
Input Type
Electronically balanced/unbalanced, RF filtered
Input Impedance
Balanced > 40 kOhm, unbalanced >20 kOhm
Max Input
> +22 dBu balanced or unbalanced
CMRR
Typically >50 dB at 1 kHz
Output Connectors
XLR and 1/4" TRS (Pin 2 and tip hot)
Output Type
Servo-balanced/unbalanced, RF filtered
Output Impedance
Balanced 30 Ohm, unbalanced 15 Ohm
Max Output
> +22 dBm balanced, > +20 dBm unbalanced
Bandwidth
20 Hz to 20 kHz, +0/-0.5 dB
Frequency Response
0.35 Hz to 90kHz, +0/-3 dB
Noise
Dynamic Range
> 118 dB, unweighted
THD+Noise
>0.008% typical at +4 dBu (1 kHz unity gain), 0.08% typical at +20 dBu (1 kHz unity gain),
IMD
Interchannel Crosstalk
Stereo Coupling
True RMS Power Summing
Compressor Threshold Range
-40 dBu to +20 dBu
Compressor Ratio
1:1 to infinity:1
Compressor Threshold Characteristic
Selectable OverEasy® or hard knee
Compressor Attack/Release Characteristic
AutoDynamic™
Compressor Attack Time
Program-dependent
Compressor Release Time
Program-dependent
Compressor Output Gain
-20 to +20 dB
Limiter Threshold Range
0 dBu to +24 dBu (off)
Limiter Ratio
infinity:1
Limiter Type
PeakStopPlus® two-stage limiter
Limiter Stage 1
PeakStop® brickwall limiter
Limiter Stage 1 Attack Time
Zero
Limiter Stage 1 Release Time
Zero
Limiter Stage 2
Predictive intelligent program limiter
Limiter Stage 2 Attack Time
Program-dependent
Limiter Stage 2 Release Time
Program-dependent
OverEasy® Switch
Activates the OverEasy compression function
I/O Meter Switch
Switches between monitoring input and output levels on the Input/Output Level meter
Bypass Switch
Activates the direct input-to-output hard-wire bypass
Operating Level Switch
(rear panel) Switches the nominal operating level between -10 dBV and +4 dBu simultaneously for both input and output levels
ST Link Switch
Links channels in stereo pairs. Channels One and Three become the master channels
Gain Reduction Meter
8 segment LED bar graph at 1, 3, 6, 10, 15, 20, 25, and 30 dB
I/O Meter
8-segment LED bar graph at -24, -18, -12, -6, 0, +6, +12, and +18 dBu
PeakStop™ Indicator
1 LED to indicate PeakStop™ limiting
Function Switches
LED indicator for each front-panel switch
Output Transformer Options
Jensen® JT-123-dbx or JT- 11-dbx, BCI RE- 123-dbx or RE-11-dbx
Operating Voltage
Switchable:100-120 VAC 50-60 Hz or 200-240 VAC 50/60 Hz
Power Consumption
20 Watts
Fuse
100-120 VAC:250 mA Slow Blow, 200-240 VAC:125 mA Type T
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