Rupert Neve Designs RNDI User Manual

1
RNDI:
Active Transformer Direct Interface
User Guide
RNDI Specifications
Noise:
Measured Output, un-weighted, 22Hz-22kHz, source impedance 150 Ohms to 10K Ohms
Better than -110dBV
Input Impedance
Instrument Setting 2.2 Meg Ohm
Speaker Setting 200k Ohm
Output Impedance Less than 40 Ohms
Frequency Response
+/- 0.25db 25Hz – 44kHz
+/- 1dB 12.5Hz – 63kHz
-3dBu 92kHz
Maximum Input Level
Instrument = +21dBu Typical
Speaker = +41.5dBu, 92 Vrms (266Vp-p)
Maximum Output Level +11.5dBu output at maximum input level
Total Harmonic Distortion plus Noise
@ 1kHz, +20dBu input level 0.25% Typical (2nd and 3rd harmonic)
@ 1kHz, -20dBu input level 0.015% Typical (2nd and 3rd harmonic)
@ 20Hz, -20dBu input level 0.75% Typical (2nd and 3rd harmonic)
Power Requirements Phantom powered, 4.5mA @ +48VDC
Weight 1.5lbs
Dimensions 6.25” long x 4”wide x 1.5” high
PN: 775-00022

Rupert Neve Designs RNDI Specifications

General

Brand	Rupert Neve Designs
Model	RNDI
Category	Recording Equipment
Language	English

Summary

RNDI Specifications

Noise Specification

Measured output, un-weighted, 22Hz-22kHz, source impedance 150 Ohms to 10K Ohms.

Input Impedance Details

Instrument setting at 2.2 Meg Ohm and speaker setting at 200k Ohm.

Output Impedance

Output impedance is less than 40 Ohms.

Frequency Response

Frequency response covers 25Hz-44kHz (+/- 0.25db) and 12.5Hz-63kHz (+/-1dB).

Maximum Input and Output Levels

Max input levels for instrument and speaker, and max output level.

Total Harmonic Distortion Plus Noise

THD+N levels at various input levels and frequencies.

Power and Physical Specifications

Details on power requirements, weight, and dimensions.

RNDI Front and Back Panel

Input and Output Ports

Description of the 1/4" input, 1/4" thru, and transformer balanced XLR output.

Control Features

Explanation of Input Level, Ground Lift, and 48V Power indicator.

RNDI Overview and Usage

RNDI Overview

Overview of the RNDI's design for instrument and speaker feed direct injection.

Usage Notes

Guidance on power, placement, and minimizing hum.

Connection Configurations

Diagrams and explanations for instrument and speaker feed configurations.