Rupert Neve Designs Master Bus Transformer
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Create Tonal Magic with the HPF & Shelf EQ
First in line is a smooth high pass filter with a fully variable frequency selection control. The HPF extends from 100Hz all the way down to 15Hz, an especially helpful area to manage on a full mix that needs to be as loud as possible.
Next up is the all-new 2-band Shelf EQ section - with 3 octave ranges, gentle slopes and minimal phase shifts, this EQ was created with an emphasis on simplicity and elegance. This smooth & musical EQ is excellent at providing just the right amount of tonal enhancement especially when it is interacting with the other sections of the MBT.
Each band has +/- 9dB of gain control, with the LF EQ corner frequency variable from 30Hz to 240Hz and the HF EQ corner frequency variable from 3kHz to 24kHz. The LF band is excellent at either taming or accentuating low-end to give source material an exacting amount of weight and power. The HF band provides a wide range of corner frequencies to choose from, allowing adjustments to be made from the upper midrange all the way up to the very top end, giving tracks extra shine and clarity.
One exciting aspect of using the MBT is discovering how the different sections can interact with each other. Sometimes the EQ can be dialed in first, other times it can be left alone until the other sections are dialed in. One thing is certain: the MBT encourages experimentation at every turn.
Breathe In New Life with the Color Comp
With an all-new optical compressor design, the Color Comp excels at accentuating the non-linear distortion and "colorful" characteristics of the Opto cell to bring source material a new sense of life and depth.
The compressor ratio can be set to a low (2:1) ratio for subtle & smooth compression or high (5:1) for much more dramatic behavior.
The variable high pass side chain filter removes the low frequencies from the compressor side chain circuit, allowing low-end information to pass through the compressor untouched while the compressor focuses on the rest of the signal. With a sweepable range from 20Hz all the way up to 350Hz, this is a highly flexible tonal shaping control providing the ability to leave the low end intact while taming or squashing the rest of the source material as needed.
The Color Comp also contains a Blend control, making it easy to use the compression circuit in parallel with the uncompressed source material. This can be especially useful when wanting to dial back the harmonic content, dynamic range reduction, and transient squashing from more extreme compressor settings.
The threshold is variable from 0dBu to +24dBu, with a gain reduction LED illuminating when the signal passes the threshold. However, the Color Comp also introduces audible non-linear harmonic content even with just a touch of gain reduction as such, we highly recommend listening to the Color Comp engaged even when no gain reduction is visible, in order to discern the amount of tonality that it introduces. The pleasing nature of this harmonic content will become even more apparent as the compressor settings become more extreme.
The release is variable from 100mS to 1.5S. By dialing in higher ratios and faster releases it is possible to get the color comp to actively "pump" with the attacks, whereas with slower release times it will operate in a much smoother manner.
Lastly, the color comp has 20dB of Class-A makeup gain. This is not only useful for level-matching the before and after compression signals, but also for driving the interstage transformers found in the Super Silk section for even greater harmonic enhancements.
Find New Dimension with Width
The Width section is designed to increase the perceived stereo spread without losing low-end focus. While inspired by the Stereo Field Editor (SFE) "WIDTH" controls found on our award-winning Master Buss Processor, the MBT's width section has two key differences: First, the width control on the MBT is additive only, with a greater range for more extreme operation. Second, there is a variable HPF from 50Hz to 800Hz to adjust the width content so that low frequencies remain more centered in the mix as the mids and highs are spread out to create more space. Additionally, there is subtle high frequency tapering of the width content to avoid overemphasizing harsher HF tones.
Control Harmonics Like Never Before with Super Silk
Introduced nearly twenty years ago, the Silk circuit has long been a favorite for Rupert Neve Designs users. First available as a simple on/off switch, then with selectable Red and Blue modes and the variable Texture control, Silk exists to enhance and control even and odd order harmonic content in any source material.
Super Silk is the latest advancement to this beloved technology: featuring independent Red, Blue, Harmonics and Zener Drive controls, harmonic manipulation is taken to a whole new level with the MBT.
Historically, Silk was always applied to a unit's output transformers. But when designing the MBT, a need was felt to offer even greater control and flexibility therefore, Super Silk also includes an extra set of transformers to further expand the possibilities of this much-loved circuit. This design provides a way to drive into Super Silk for more dynamic saturation and transient clipping, while also being able to attenuate the signal for proper gain staging after Super Silk by using the Output Trim.
Silk Red accentuates harmonics in the upper mid and high frequencies, adding sparkle and sheen. Silk Blue accentuates harmonics in the low & low mid frequencies, creating more depth and weight. The Harmonics control increases the overall musical harmonic content by saturating the MBT's custom interstage transformers; this setting will interact with the settings for both Silk Blue and Silk Red, so experimentation is encouraged to find new blends and balances.
Lastly, the switchable Zener Drive is a diode-based asymmetrical soft clip circuit that introduces mostly odd order harmonic content as the signal approaches the edge of the MBT's headroom to achieve a more aggressive tonality.
Drive and Control Levels with I/O Amplifiers
To maintain optimal gain staging through the MBT, fully drive the interstage transformers, and accurately match the pre / post signals, the MBT includes Class-A input and output amplifiers to manage all levels. The output amplifiers feed Rupert Neve Designs' custom output transformers for line balancing and isolation.
Features
• Built around Rupert Neve's Class-A, Transformer Coupled Signal Paths• Revitalize mono or stereo tracks, stems and mixes with a suite of new controls
• Add that missing weight and power with our new Super Silk circuit
• Add dynamic character with the opto-based Color Comp
• Quickly adjust tone with the gentle and musical LF & HF shelves
• Use the newly designed Width section to create dimension without losing focus
• Drive and level-match the interstage transformers with the I/O amplifiers
MBT Front Panel Controls
Input LevelLED indication that illuminates GREEN when the input signal reaches -20dBu and illuminates RED to show when the input signal reaches +23dBu. This indication is post input trim control.
Input Trim
31-detent potentiometer that controls the input level within a range of +/- 12dB.
HPF Freq
31-detent potentiometer that controls the HPF frequency within a range of 15Hz to 100Hz.
HPF In
Push-button switch that illuminates GREEN when the 6dB/octave HPF is engaged.
LF
31-detent potentiometer that controls the Low Frequency Shelf gain within a range of +/- 9dB.
LF Freq
31-detent potentiometer that controls the Low Frequency Shelf corner frequency within a range of 30Hz to 240Hz.
HF
31-detent potentiometer that controls the High Frequency Shelf gain within a range of +/- 9dB.
HF Freq
31-detent potentiometer that controls the High Frequency Shelf corner frequency within a range of 3kHz to 24kHz.
EQ In
Push-button switch that illuminates GREEN when the equalizer section is engaged.
Threshold
31-detent potentiometer that controls the compressor threshold within a range of +24dBu to 0dBu.
S/C HPF
31-detent potentiometer that controls the corner frequency of the S/C HPF within a range of 20Hz to 350Hz.
Comp In
Push-button switch that illuminates GREEN when the compressor section is engaged.
Gain Reduction
LED that illuminates GREEN when gain reduction is occuring. The LED indicates compression for left and right channels simultaneously.
Release
31-detent potentiometer that controls the Release time of the compressor within a range of 100mS to 1.5S.
Ratio
Opaque push-button switch that toggles between a LO (OUT) 2:1 ratio and a HI (IN) 5:1 compressor ratio curve.
Blend
31-detent potentiometer that controls the amount of dry (0%) vs. wet (100%) compressed signal in the audio path.
Gain
31-detent potentiometer that controls the amount of compressor make-up gain within a range of 0dB to +20dB.
Width In
Push-button switch that illuminates GREEN when the WIDTH section is engaged.
Width HPF
31-detent potentiometer that controls the corner frequency of the width processing HPF within a range of 50Hz to 800Hz.
Width
31-detent potentiometer that controls the amount of Width stereo field processing within a range of MIN to
MAX.
SILK In
Push-button switch that illuminates PURPLE when the SUPER SILK section is engaged.
Blue
31-detent potentiometer that controls the amount of low frequency SILK pre-emphasis.
Drive
LED that illuminates RED when the signal level reaches the optimal range for transformer harmonics. The LED indicates drive level for left and right channels.
Red
31-detent potentiometer that controls the amount of high frequency SILK pre-emphasis.
Harmonics
31-detent potentiometer that controls the amount of transformer harmonics added to the audio path.
Zener Drive
Push-button switch that illuminates AMBER when the soft clip circuitry is engaged.
Bypass All
Push-button switch that illuminates RED when the master bypass is engaged. This master bypass is a true hard-wire bypass that ensures the MBT will pass audio in the event that power is lost.
Output Trim
31-detent potentiometer that controls the amount of output trim within a range of +/- 12dB.
Output Meters
Stereo 16-segment LED meters that indicate output level in dBu.
Power
LED that illuminates GREEN when POWER is ON.
MBT Rear Panel
PowerIEC standard 3 pin grounded switched AC power inlet with an input range of 100-240 VAC, 50/60Hz. 70 Watts maximum AC power consumption.
GND Lift
Slide switch that lifts XLR Output Pin 1 from chassis ground to minimize ground loops.
Output
Balanced XLR outputs with custom Rupert Neve Designs transformers capable of handling up to +25.5dBu at 1kHz.
Input
Balanced XLR combo jack inputs capable of handling up to +26.8dBu at 1kHz.
Input Impedance
10 kilohm
No Features Engaged
Noise (22 Hz - 22kHz): Better than -95 dBu
THD+N (0 dBu @ 1kHz): Better than 0.004%
THD+N (+20 dBu @ 1 kHz): Better than 0.002%
Maximum Input Level: +25.5 dBu
Crosstalk @ 1 kHz: Better than -95 dB
Frequency Response
5 Hz - 30 kHz: +/- 0.1 dB
5 Hz - 60 kHz: +/- 0.25 dB
5 Hz - 180 kHz: -3 dB
HPF Engaged
Noise (22 Hz - 22 kHz): Better than -95 dBu
THD+N (+20 dBu @ 1 kHz): Better than 0.002%
Equalizer Engaged
Noise (22 Hz - 22 kHz): Better than -93dBu
THD+N (+20 dBu @ 1 kHz): Better than 0.002%
Compressor Engaged
Noise (22 Hz - 22 kHz): Better than -92dBu
THD+N (+20 dBu @ 1 kHz): Better than 0.002%
Width Engaged
Noise (22 Hz - 22 kHz): Better than -88dBu
THD+N (+20 dBu @ 1 kHz): Better than 0.002%
SILK Engaged
Noise (22 Hz - 22 kHz): Better than -95dBu
THD+N (+20 dBu @ 1 kHz): Better than 0.003%
Q & A
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Protect your investment with the Long & McQuade Performance Warranty
A warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.
Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.
How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?
- Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
- Product Replacement: If your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.
- No Lemon Policy: Your product will be replaced should the same problem occur multiple times.
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- Accessory Coverage: Any peripheral devices or accessories that come with your product (i.e. foot pedal, case) are also covered.
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Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty. Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Cosmetic Damage, Accidental Damage, or problems caused by Humidity or Temperature Issues are not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.
Purchasing additional years of coverage
Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.
If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:
- NEW products: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
- USED products: 4% of the current new selling price to increase the warranty from 3 months to 1 year. 4% for each additional year.
- GUITARS: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year. $45 maximum. An additional free setup is not included with additional purchased years of Performance Warranty.
- BAND and ORCHESTRAL instruments: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.