Rupert Neve Designs RND-511 500 Series Microphone Preamp with Silk/Texture Control
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Classic sound for your 500 rack
With a big, bold preamp, a swept high-pass filter and the powerful saturation control of variable Silk, the 511 combines legendary Rupert Neve tone with 500 Series value.
One of the key features of the 511 is the Silk / Texture control. The Silk circuit was initially developed for the original Portico series mic preamplifiers, and was only a single switch on or off that added a specified amount of musical, pleasing harmonic saturation to the unit's output stage.
Taking this concept one step further, the Texture knob is designed to adjust the actual amount of harmonic content from the source material.
So how does it work? By reducing negative feedback across the output transformer and adjusting this feedback's frequency response, the Silk / Texture circuit provides the sweet, musical saturation found in Rupert's legendary vintage designs but with complete & precise control over the amount of classic tone you want.
Features
• GAIN - A 12-way precision rotary switch controls gain from 0 to 66 dB in 6 dB steps
• TRIM - Continuously variable +/-6 dB control to fine-tune level
• +48V - Engages phantom power on the microphone input, as supplied by the 500 series rack
• LEVEL METER - An eight-segment LED bar-graph meter displays output level (pre-Silk)
• POLARITY - Push button inverts the polarity of the signal path, and illuminates when engaged
• HIGH PASS FILTER - The high pass filter is continuously variable from 20-250Hz. Signals below the selected frequency are attenuated at a rate of 12db / octave, getting rid of proximity effect, building rumble, air handling, motor hum, etc.
• SILK / TEXTURE - Pushing the Silk button engages the Silk Red circuit, which enhances harmonic content generated by the highs and high mids of your source. This adds a sparkly sheen to the top end, and is often ideal for sources including vocals, strings, pianos, and other acoustic instruments. With Silk / Texture engaged, the distortion characteristic and harmonic content of the unit are very reminiscent of many of Rupert's class-A vintage designs. By manipulating the Texture control, the amount of Silk can be changed from essentially absent, to well beyond the amount of coloration found in vintage units.
Specs
NOISE
Measured at Main Output, un-weighted, 22 Hz - 22 kHz, source impedance 150 Ohm balanced. Noise performance can vary depending on the 500 series and / or interference from stray magnetic fields.
Unity Gain: Better than -103 dBV
Gain @ +66 dB: Better than -60 dBV
Equivalent Input Noise: -125 dB
FREQUENCY RESPONSE
Main output, no load.
+/- 0.1 dBu from 10 Hz to 31.5 kHz
-2.6 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
+23 dBu
TOTAL HARMONIC DISTORTION AND NOISE, NO SILK
@ 1 kHz, +20 dBu output level, no load: Better than 0.0025%
@ 20 Hz, +20 dBu output level, no load: 0.025% Typical (2nd and 3rd harmonic)
TOTAL HARMONIC DISTORTION AND NOISE WITH SILK ENGAGED
@ 100 Hz, +20 dBu input level, no load.
TEXTURE @ min: 0.015%, mostly 3rd harmonic typical
TEXTURE @ max: 2%, mostly 2rd harmonic typical
GAIN
Unity up to +66 dB in 6 dB steps.
Trim continuously adjustable from -6 dB to +6 dB.
PHANTOM POWER
Supplied by the 500 series rack power supply. Switch selectable on faceplate.
HIGH PASS FILTER
Continuously variable swept frequency from 20 Hz to 250 Hz.
Slope: 12 dB/Octave
POWER REQUIREMENTS
@ +/-16VDC, 100mA
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| Product | SKU | Qty |
|---|---|---|
| RND-511 500 Series Microphone Preamp with Silk/Texture Control | 388678 |
