Pro-Ject Phono Box RS2 Handleiding


Lees hieronder de đź“– handleiding in het Nederlandse voor Pro-Ject Phono Box RS2 (5 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 39 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

Pagina 1/5
PRODUCT INFORMATION
Technical data and price changes reserved.
Page 1/5
PRO-JECT AUDIO SYSTEMS
www.project-audio.com
• MM & MC capable
• Fully balanced, true dual mono design
• Fully discrete hardware design - NO Op-amps!
• Fully passive RIAA & DECCA equalisation
• Balanced XLR & unbalanced RCA In & Outputs
• Unique continously variable input impedance loading
and channel balance control to match every cartridge
to 100% (adjustment even while playing)
• Superior low noise / low distortion
• Metal casing protects against vibration and interference
• Available in silver or black
Input impedance: Fixed 47kohms, variable 10 - 1000 ohms
Load capacity switchable: 50, 100, 150, 200, 250, 300, 350,
400 pF
Gain MM: RCA: 40, 43, 46, 50 dB (+6dB using XLR)
Gain MC: RCA: 60, 63, 66, 70 dB (+6dB using XLR)
Signal to noise ratio: MM (40dB): 89dB A-wt (10mV); MC
(60dB): 79dB A-wt (1mV)
THD: < 0,0015% (MM 40dB, 1kHz); < 0,0024% (MC 60dB,
1kHz)
RIAA accuracy: within 0,4dB/20Hz - 20kHz
Subsonic: at 20Hz with 18dB/octave
Input: RCA & XLR
Output: RCA & XLR
Power supply: 20V/3A DC; 110 - 240V, 50/60Hz
Power consumption: max 350mA DC
Dimensions W x H x D (D with sockets): 206 x 72 x 200 (230)mm
Weight: 1600g without power supply
Phono Box RS2
Fully balanced, fully discrete phono preamp of the highest class
MSRP 1499 € (incl. VAT) colour options:
PRODUCT INFORMATION
Technical data and price changes reserved.
Page 2/5
PRO-JECT AUDIO SYSTEMS
www.project-audio.com
Reference class phono preamplier
with unique impedance control
The Phono Box RS2 is the ultimate phono preamplier of
the highest class. It is fully balanced from the input to the
output. Electronics are fully discrete, no op-amps are in
use and it uses split passive RIAA and DECA equalization.
An EQ has to be handled and implemented very carefully
and split passive EQ is the most expensive way to do it,
but also the only way to go if you want the most accurate
sound.
The Phono Box RS2 features the most advanced cont-
rols to be seen on any phono preamp in this price class!
It is an incredibly powerful tool for high-end enthusiasts
and professionals who are looking to dive deep into all
the settings and features the Phono Box RS2 has to oer.
On the other hand, the top notch build quality, the clean
circuit board design and the technology in use will let you
enjoy your turntable and all it has to oer, even without
digging too deep into the advanced settings. Purists
can eortlessly enjoy the best sound while experts and
tech-enthusiasts will nd their perfect high-tech phono
preamp.
Discrete Circuitry
A discrete circuit is composed of electronic components
which are disparate, individual devices, also called di-
screte components.
These can be “passive” components, like resistors, ca-
pacitors and inductors, as well as “active” components,
which in our case are transistors. The opposite to this
would be an integrated circuit, which uses operational
ampliers (Op-Amps) in the signal chain.
Countless hours of listening tests and years of experien-
ce have shown us that even the very best Op-Amps do
not tend to be so neutral, natural, dynamic or vivid.
Standard phono pre-ampliers with integrated circuits
have a few tens or hundreds of components, but discre-
te designs will employ hundreds or thousands of com-
ponents by comparison. That makes for an extended
and more costly design process, but results in the best
sound for your money.
Fully Balanced
The Phono Box RS2 employs a true fully balanced design
principle. Balanced transmissions consist of a hot and a
cold (also called + and -) signal. Both the + and – signal
chains eectively carry the same musical information. A
true balanced amplier can now extract the nal musical
information out the +/- signals and subtract, remove, all
noise that could potentially be added along the transmis-
sion.
A “pseudo-balanced” amplier will not process the + and
– signals independently, but add them together before
they are processed. Pseudo-balanced design will not
benet from the advantages that balanced connections
have to oer, like fully balanced ampliers do. In a true,
fully balanced amplier, like the Phono Box RS2, the +
and – sections of both the left and right channel are tre-
ated individually, which doubles the amplier sections by
2 as a result. You need twice as much space on the cir-
PRODUCT INFORMATION
Technical data and price changes reserved.
Page 3/5
PRO-JECT AUDIO SYSTEMS
www.project-audio.com
cuit board, twice as many electrical components and be
twice as careful with planning your circuit board layout.
As a result, the Phono Box RS2 excels at suppressing
unwanted noise, errors and interferences and oers the
best signal to noise ratio possible.
Split passive EQ
The Phono Box RS2 uses split passive equalization for
both of its RIAA and DECA curves. This is more costly
to design and implement but ensures the most accurate
representation of the ideal EQ curve. Split passive equa-
lization allows for better impedance matching and lower
deviation from the ideal RIAA or DECA curve.
Extreme cartridge loading options
Gain
No other phono-preamp in the world has such ne op-
tions of setting the gain like the Phono Box RS2. Very
large ranges from 40dB (voltage amplication by 100x)
up to 70dB (voltage amplication by 3690x) are possib-
le. You can see the big increase in amplication between
40dB and 70dB and this is why a phono preamp must
be incredibly silent (a fully balanced design makes a big
dierence here) to handle amplication levels this high.
The Phono Box RS2 is able to do this just perfectly. You
can perfectly match it with a wide variety of cartridges
and perfectly integrate it into the rest of your Hi system,
matching the volume levels accurately to other sources
like CD players or streaming devices.
Impedance
Load impedance can be set continuously via potentio-
meter, a system invented by Pro-Ject Audio Systems. It
allows you to seamlessly adjust the impedance during
playback and immediately assess the impact of dierent
loading options. This is necessary to nd just the right
load impedance for your cartridge. No other manufactu-
rers implement this feature in this extreme way!
Balance function
Cartridges, by nature, suer from small imbalances bet-
ween the left and right channels. To correct this the Pho-
no Box RS2 introduces a new feature that is absolutely
rare in this price category. A potentiometer allows you
to adjust the exact center of the sound stage in ranges
of 2dB to the left or right. This function can be switched
o in order to keep the signal path as short as possible,
or if it is not needed. For example, Ortofon declares that
their very popular cartridge 2M Red has a channel balan-
ce of 1,5dB at 1kHz. Their very expensive MC cartridge
Anna Diamond has a channel balance of, still, 0,5dB. The-
se small dierences can be accurately balanced by the
Phono Box RS2.
Practically, there is no MM or MC cartridge that the Pho-
no Box RS2 can’t handle.
Power Supply
The Phono Box RS2 is powered from an external adap-
ter which is rated 20V/3A. If you have an amplier where
there is a 3500x voltage gain and the input sensitivity is
a few hundred micro-volts (0,0001 Volt) you will deniti-
vely want to keep it as far away as possible from all sour-
ces of interference which can harm the vulnerable signal
from cartridge. That is why it is important to keep all the
parts which can radiate electromagnetic elds out of the
amplier range. This is the reason why we are using an
outboard power supply. Due to legal requirements, this
power supply must be a switch mode type with guaran-
teed stand-by mode power consumption 0,1W.


Product specificaties

Merk: Pro-Ject
Categorie: Niet gecategoriseerd
Model: Phono Box RS2

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