SPL Elector User manual

Professional Fidelity
Elector
V
O
L
U
M
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VOLTAiR
120V DC Audio Rail Analog Preamplifier
ON
Off On
TAPE MONITOR
6
0
12
VU
2
3
INPUT SELECTOR
4
5
6
1
Elector – User Manual
Analog Preamplier
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2
Welcome
and thank you for choosing the Elector.
The Elector is based on the Director Mk and designed as a pure analog preamplifier. It features a total of six ana-
log inputs. Three of which are balanced with XLR connectors. The Elector is equipped with the big remote control-
lable aluminum volume control with marker LED and two mechanical VU meters.
Fans of analog tape machines or external audio processing can insert their beloved gear in the Tape Monitor loop.
VOLTAiR technology is what we also call the SPL V Rail Technology within the Professional Fidelity series. This
makes the Elector an outstandig device in terms of dynamic range, signal-to-noise ratio and headroom delivering an
exceptional sound experience with invincible serenity, transparency and realness.
Elector
V
O
L
U
M
E
VOLTAiR
120V DC Au dio Rail Analog Preamplifier
ON
Off On
TAPE MONITOR
6
0
12
VU
2
3
INPUT SELECTOR
4
5
6
1
SEND
–10dB
RETURN
+10dB
Fuses:
230V AC:
T 500 mA L 250 V
115V AC:
T 1 A L 250 V
Voltage Selection:
1. Remove Fuse Holder
2. Exchange Fuses
3. Flip Over
4. Reinstall L LR
Elector
Made in Germany
Refer to
Manual
RISK OF E LECTRI C SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ÉLECTRIQUE
NE PAS OUVRIR
ATTENTION
R
L
R
L
R
L
R
L
~ 115V AC / ~230V AC, 50Hz / 60Hz, P max. 45 W
456
3LR 2
LR Tape
Monitor
LR 1
B
A
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Content
Getting started 
Front view 
Rear view 
VOLTAiR – V Rail Technology 
Comparisons 
Operation 
Source Selection 
Volume 
Tape Monitor 
VU Meter 
Attenuate the sensitivity of the VU meters 
IR Remote Control 
The volume potentiometer can be remotely controlled using
any infrared (IR) remote control 
AMP CTL (Amplifier Control) 
Specifications 
Inputs and Outputs 
Analog inputs 
Outputs 
Measurements 
Internal Voltages 
Power supply 
Dimensions (incl. feet) 
Weight 
Important Notes 
Declaration of CE Conformity 
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4
Getting started
Getting started
Read thoroughly and follow the instructions as well as the security advices of the Quickstart
which is enclosed in the scope of delivery! You can also download the Quickstart here.
By pressing the -Button you get to the table of contents.
By pressing the -Button you get to the front view of the unit.
By pressing the -Button you get to the rear view of the unit.
By pressing the -Button you get to the previous content.
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5
Elector
V
O
L
U
M
E
VOLTAiR
120V DC Audio Rail Analog Preamplifier
ON
Off On
TAPE MONITOR
6
0
12
VU
2
3
INPUT SELECTOR
4
5
6
1
Front view
Front view
Stand-by
1
Power-LED
3
I
R
F
Volume 5
Source 4
VU Meter
2
VU Meter Switch
7
Tape Monitor Switch
6

6
SEND
–10dB
RETURN
+10dB
Fuses:
230V AC:
T 500 mA L 250 V
115V AC:
T 1 A L 250 V
Voltage Selection:
1. Remove Fuse Holder
2. Exchange Fuses
3. Flip Over
4. Reinstall L LR
Elector
Made in Germany
Refer to
Manual
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ÉLECTRIQUE
NE PAS OUVRIR
ATTENTION
R
L
R
L
R
L
R
L
~ 115V AC / ~230VAC, 50Hz / 60 Hz, P max. 45 W
456
3LR 2
LR Tape
Monitor
LR 1
B
A
Rear view
Rear view
Mains Switch 11
Mains Voltage 10
I
R
F
Learn IR-Remote-Button 12
Preamp Output 13
AMP CTL
9
Analog Audio Inputs
8
Analog Audio Inputs
8
Tape Monitor
15
Direct Output
14

7
VOLTAiR – 120V Rail Technology
VOLTAiR – V Rail Technology
VOLTAiR is the synonym for our V Rail Technology within the Professional Fidelity series. The audio signals are
processed with an unequalled +/-V DC, which corresponds to twice that of discrete operational amplifiers and
four-times that of semiconductor operational amplifiers.
VOLTAiR Technology reaches outstanding technical and sonic performances. Technically especially in terms of
dynamic range and headroom and sonically especially in reproducing the finest details and delivering a totally
relaxed sounding audio experience. Music sounds absolutely natural.
SPL’s V Rail Technology is the internal audio processing voltage (+/- V DC).
It is not to be confused with the external mains voltage (e.g. V or V AC).
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VOLTAiR – 120V Rail Technology
Comparisons
These diagrams show how our VOLTAiR Technology compares to other circuits.
The direct relation between operating level and maximum level is fundamental for the classification: the higher
the operating level, the higher the maximum level a circuit can handle. And since virtually all essential acoustic
and musical parameters depend on this relation, a higher operating voltage also has a positive impact on the
dynamic range, distortion limit and signal-to-noise ratio.
0
20
40
60
80
100
120
Volt
30 V
120 V
+ / -  Volt + / -  Volt
Operating Voltage
120
125
130
135
140
145
dB
124,2
141,4
OPA @ V SPL- OP@ V
Dynamic Range
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VOLTAiR – 120V Rail Technology
Do bear in mind that dB scales do not represent linear but rather exponential increases. A dB increase corresponds
to doubling the acoustic power, +dB correspond to twice the sound pressure level, and +dB correspond to twice
the perceived loudness.
When it comes to volume, the VOLTAiR Technology exhibits a performance, in regard to maximum level and dynamic
range, that is twice that of common components and circuits given that its values are approximately dB higher.
THD measurements show a difference of more than dB compared to the TL at V — in terms of sound pres-
sure level, that corresponds to an improvement of more than %. The operating level most commonly used for
audio equipment is +/-  volts.
Max. Audio Level
OPA @ V SPL- OP@ V
0
5
10
15
20
25
30
35
dBu
21,5
33,2
TL @ V SPL- OP@ V
-115
-113
-111
-109
-107
-105
dBu
-106
-114,2
THD&N
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Operation
Operation
Source Selection
With the SOURCE switch () you select the source.
Select one of the six analog inputs  - .
Volume
You control the volume of the PREAMP OUTPUT () with the VOLUME potentiometer ().
The DIRECT OUT () level is fixed to  dBfs and can be used to connect a headphone ampli-
fier.
The VOLUME potentiometer is motorized and can be remotely controlled (seepage).
20
0
%
–+
30 50 70 100
10 75 3 103
5
VU
20
0
%
–+
30 50 70 100
10 75 3 103
5
VU
Elector
V
O
L
U
M
E
VOLTAiR
120V DC Audio Rail Analog Preamplifier
ON
Off On
TAPE MONITOR
6
0
12
VU
2
3
INPUT SELECTOR
4
5
6
1
20
0
%
–+
30 50 70 100
10 75 3 103
5
VU
20
0
%
–+
30 50 70 100
10 75 3 103
5
VU
Elector
V
O
L
U
M
E
VOLTAiR
120V DC Audio Rail Analog Preamplifier
ON
Off On
TAPE MONITOR
6
0
12
VU
2
3
INPUT SELECTOR
4
5
6
1
I
R
F