ROTEL
RT-2000 Stereo Quartz PLL AM/FM Tuner
Top
performance with a quartz lock system and ideal ease of operation that
complements an abundance of information.
In addition
to its quartz lock system, the RT-2000 has a front-end with a 5-gang dual-gate
MOS FET that guarantees reception sensitivity, and an FM PLL MPX section for
superior stereo separation and a wide dynamic range. This model stands on its
own in performance and quality.
QUARTZ LOCK
As obvious
as it may seem, a tuner's true worth is determined by the accuracy of its
tuning. Both of Rotel's 2000 series tuners ensure absolute precision by using a
quartz crystal oscillator lock system.
Rotel's
quartz lock system automatically compares the precise 10,7 MHz emaneting from
the oscillator with the approximate 10,7 MHz of the intermediate frequency
(IF). Should there be a discrepancy a positive or negative signal is
accordingly emitted by the phase comparator which passes through the low pass
filter (LPF) and serves to lock the local oscillator.
Touching the
tuning knob unlocks the quartz control. Releasing one's hand from the tuning
knob automatically activates the quartz lock circuit which then maintains the
station selected. Once tuned stable reception is quaranteed and drift is
eliminated regardless of changes oscillation is locked.
FM FRONT
END, IF SECTION
Rotel uses a
linear-frequency precision 5 gang variable capacitors. The RT-2000 has a 1
Dual-Gate MOS FET stages, both employing the best low-noise components, with
resultant superior interference reiection capability as well as having a
positive effect on cross modulation interference. The intermediate frequency
band is divided into 2 stages, WIDE and NARROW, which ensures superior sound
quality under varying conditions of reception, and the linear phase filter aids
in low distortion and superior stereo separation.
AM SECTION
The
RT-2000's AM-front -end uses a 16-pin dual-in-line IC package with great
resistance to external interference as well as much improved performance.
Advanced circuitry means AM broadcasts also become a source for high fidelity
sound reproduction.
MULTIPATH
INTERFERENCE SUPPRESSION
The
multipath phenomenon in FM reception, similar to double images on television ,
can adversely affect sound fidelity. With the Multipath switch "ON"
it is possible to select the optimum position for an antenna. The degree of
multipath interference can be checked with the signal meter indicator.
SUPERIOR MPX
SECTION
In order to
improve frequency characteristics in the MPX section, Rotel has paid particular
attention to the cut off of the pilot signal (19 kHz) and weakening of the
carrier signal (38 kHz). By using LC block filters, high frequency range drop
is minimized and a wide range is guaranteed, with the result that rich sound
reproduction is possible. The PLL IC is
employed to assure constant high stereo separation at low distortion for wide
dynamic range.
IF BAND
SELECTOR
IF
(Intermediate Frequency) is the front end output (unified at 10,7 MHz for FM)
resulting from the difference between the broadcasting signal received and the
oscillator frequency. Rotel makes it possible to select between two options
Wide or Narrow. When reception is weak,
use of a narrow IF band can result in superior selection.
DOLBY FM
The RT-2000
incorporates a 25µs de-emphasis switch, in case of a use with an external Dolby
NR adapter.
HI BLEND
SWITCH
Rotel's
Hi-Blend switch creates a faithful and easy-to-listen-to reproduction by
cutting out unwanted high frequencynoise with minimum loss for stereo
separation and frequency response.
SPECIFICATIONS ROTEL RT-2000
FM
Section: 88 - 108 MHz
Aalternate
Channel Selectivity (IHF): 80 dB
(narrow)
Frequency
Response: 30 Hz - 15 kHz ±0.2 dB
Stereo
separation: 45 dB (1 kHz)
Capture
ratio: 1 dB
Image
Response Rejection: 100 dB
IF
Rejection: 100 dB
Sensitivity
(IHF):
Stereo : 36
dBf/35 µV (S/N 50dB)
Mono: 9.8 dBf/1.6 µV (S/N 26dB)
Signal-to-Noise Ratio (IHF):
Stereo : 75
dB
Mono : 80 dB
Total
Harmonic Distortion (wide/narrow):
Stereo :
0,07% / 0.2%
Mono : 0,05%
/ 0.15%
Muting
Threshold: 5 µV
Am
Suppresion Ratio: 60 dB
Am
Section: 525 - 1605 kHz
Sensitivity
(IHF): 200 µV/m
Signal-to-Noise
Ratio: 55 dB
Image
Rejection: 50 dB
Selectiviy: 40 dB
Dimensions
(W x H x D): 482 x 143 x 328 mm
Weight: 7,5 kg
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