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Description
Description
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.
What is Silk?
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.
NOISE
FREQUENCY RESPONSE
MAXIMUM OUTPUT LEVEL
+23 dBu
TOTAL HARMONIC DISTORTION AND NOISE, NO SILK
TOTAL HARMONIC DISTORTION AND NOISE WITH SILK ENGAGED
GAIN
PHANTOM POWER
Supplied by the 500 series rack power supply. Switch selectable on faceplate.
HIGH PASS FILTER
POWER REQUIREMENTS
@ +/-16VDC, 100mA
What is Silk?
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.
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