Instrukcja obsługi Rupert Neve Designs RNDI

Rupert Neve Designs nieskategoryzowany RNDI

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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
2
Thank you for your purchase of the RNDI Active Transformer Direct Interface. Everyone at Rupert Neve
Designs hopes you enjoy using this tool as much as we have enjoyed designing and building it.
Front / Back Panel
RNDI Overview
The RNDI is designed to deliver instrument (electric guitar, bass, keyboard, piezo pickup, etc.) and speaker
feed direct injection with unprecedented sound quality. The class-A & discrete circuit topology found
in the RNDI is based around Mr. Rupert Neve’s custom transformers, and allows for outstanding sonic
performance and superior noise rejection. The RNDI can handle extremely high input levels without
clipping (+21dBu on instrument & 41.5dBu on speaker), and the transformer coupled output has a very
low output impedance of 40 Ohms, which is capable of driving long lines with minimal loss. The chassis
of the RNDI is a formed steel clamshell designed to hold up to the rigors of use on stage or in the studio.
Usage Notes
Power for the RNDI is supplied by standard 48V phantom power on the XLR output connection, and is
indicated by a front panel LED. Try to avoid placing the RNDI close to strong electro-magnetic radiators
like power ampliers, as some noise can still be induced on the transformers through the RNDI’s steel
shielding. To minimize ground loop hum, the full signal chain should ideally be on a single isolated
circuit. If you are experiencing a hum on the RNDI output or amplier, experiment with switching the
ground lift on the RNDI and ground lifts on other components in the chain. If that doesn’t work, try
removing certain modules or powering off other devices on the same power circuit to minimize the hum.
In an instrument conguration, the DI converts the impedance of the instrument signal, balances the signal
(if unbalanced), provides a buffered output stage to send to a separate mic preamp, and optionally sends
the THRU connection to the amp input. To get the best performance out of your RNDI, we recommend
you use the best available cables and mic preamps, and output the maximum level from your instrument.
In a speaker feed conguration, the DI is used post power amplier to capture the tone of the preamp and
power amp. Be sure to switch the RNDI input level to speaker and connect the amplier and speaker
BEFORE turning the amplier on. With tube power amps, THE SPEAKER MUST BE CONNECTED to the
THRU connection to provide a load for the amplier. Solid state amps can generally be run without a
speaker connected. See the diagrams below for standard connection examples.
RNDI: Active Transformer Direct Interface
1/4” Input
Hi-Z Unbalanced Input
2.2M Ω : Instrument
200KΩ : Speaker
1/4” Thru
Parallel 1/4” Port
used to send signal
to the amp or speaker
Input Level
Selects speaker or
instrument level
Max input +21dBu Inst.
or +41.5dBu Speaker
SPEAKER
INPUT LEVEL
INSTRUMENT
48V
POWER
IN THRU
Rupert Neve Designs
Ground Lift
Isolates the XLR pin 1
from the instrument
input ground
Output
Transformer balanced
XLR Output. Impedance
less than 40Ω
LIFT
GND
OUTPUT
Active Transformer
Direct Interface
Rupert Neve Designs, LLC
RND I
To RNDI In
SPEAKER
INPUT LEVEL
INSTRUMENT
48V
POWER
IN THRU
Rupert Neve Designs
To Amp In XLR Output on Back:
To Mic Pre
36
30
24
18
12
6
0dB 66
60
54
48
42
20Hz 250Hz
100
MIN MAX
TEXT U RE
0dB
-6 +6
TRI M
GAIN
POWER
SILK
48V
HPF
HP F
Rupert Neve
Design s 511
MIC PRE
+ SILK
22
20
18
14
10
4
-2
-10
LEVEL
Powered Amp Out
To RNDI In
SPEAKER
INPUT LEVEL
INSTRUMENT
48V
POWER
IN THRU
Rupert Neve Designs
To Amp In
XLR Output
To Mic Pre
36
30
24
18
12
60dB 66
60
54
48
42
20Hz 250Hz
100
MIN MAX
TEXT U RE
0dB
-6 +6
TRI M
GAIN
POWER
SILK
48V
HPF
HP F
Rupert Neve
Design s 511
MIC PRE
+ SILK
LEVEL
Thru Out
To Speaker In
Instrument Configuration (Instrument Selected) Speaker Feed Configuration (Speaker Selected)

Specyfikacje produktu

Marka: Rupert Neve Designs
Kategoria: nieskategoryzowany
Model: RNDI

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