FEATURES
- 24-bit A/D and D/A conversion, high resolution
- Each track allows automatic search for 12 frequency feedback, intelligent processing
- Prompt and easy default processing and complete feedback suppression performance
- In single-point mode, the device will automatically search for and lock notch frequency until the device is manually reset or
reconfigured
- In manual mode, the user can set all parameters of 2×12 filters, including their frequency and Q value, etc
- Servo balanced input and output, gold plated XLR and TRS terminals
- Two modes (SING and AUTO) available on each filter
- Two parallel processing modules, the le and right channel may be adjusted independently or in parallel
- 24-bit high-performance DSP, ensuring signal resolution and dynamic range
- Soft start of switches, free of knocking sound, noise gating function
- Backlight 2×16 character LCD
- 2×7 LED level display, capable of displaying input or output level
- High-quality SMD components and automatic SMD welding and online testing technologies ensure high quality and reliability
of the product
- Specialized internal power supply system
| SPECIFICATIONS |
Model | NVS-70020002FS
|
| Number of Input Channel | 2 channels, (2 XLR, 2 1/4" TRS) |
| Number of Output Channel | 2 channels, (2 XLR, 2 1/4" TRS) |
| Input Impedance | Unbalanced 10kΩ/balanced20kΩ |
| Output Impedance | 150Ω |
| Maximum Input Level | 10.5dBu
|
Maximum Output Level
| 10.5dBu
|
Sampling Frequency
| 48kHz
|
| Gain | 0dB(+4dB gear), 12dB(-10dBVgear) |
| Suppression Time | 0.3s@1kHz |
Audio Gain
| 9dB
|
| Dynamic Range | 106dB, A weighting |
Frequency Response
| 20Hz-20kHz, ±0.5dB
|
| CMRR | ≥55dB(+4dBu gear), ≥75dB(-10dBVgear) |
| Crosstalk | ≤97dB |
Distortion+Noise
| ≤0.0025(@1kHz, +4dBu)
|
SNR
| 100dB, A weighting, refer to+4dBu
|
Power Supply
| 100V-240Vac 50/60Hz
|
| Power Consumption | ≤10W |
| Fuse | T1AL/250VAC |
| Product Dimensions | (L×W×H) 482×152×45(mm) |
| Package Dimensions | (L×W×H) 515×245×75(mm) |
Gross Weight
| 2.2kg
|
Net Weight
| 1.7kg |
(1) 2×7 LEDs respectively used for input/output level indication of left and right channels.
(2) "P:" Program selection menu, when selected, ":" changes to "->"，the user can select any program set from 0 to 9 by
turning the encoder.
(3) "CH:" Left/right channel parameter adjustment activation menu, when "CH:L" is selected, adjustment to le channel
parameters is activated; when "CH:R" is selected, adjustment to right channel parameters is activated; when "CH:LR" is
selected, adjustment to parameters of both le and right channels is activated.
(4) When "BYP" is shown, all feedback suppression filters of the current channel are bypassed. When "ACT" is shown, the
settings on the filter is valid and input signals are processed by the feedback suppression filter.
(5) "FILE:", when prompt ":" changes to "->", the user can select any filter marked 1 to 12 by turning the encoder.
(6) "：SING", when prompt ":" changes to "->", the user can press PUSH button to enter the display menu of current filter
and Q value. In SING mode, the user can adjust the frequency and Q value, while in AUTO mode, the frequency and Q value
will be simply displayed but cannot be edited. If "SV" (indicator of parameter memory change) is shown, it means that the
parameter has been modified. After the user pressed the "STORE" button, "SV" changes to "SC", reminding the user whether
to remember the parameter, when the user presses the "STORE" button again, "SC" disappears, which means that the new
parameter has been recorded in the current channel.
(7) ": SET", when prompt ":" changes to "->", the user can press PUSH button to enter SING mode filter setting menu: in the
first step, the user should set up the quantity of SING filters and then press PUSH button to choose if the SING filter parameters
are to be reset. The user can press PUSH button again to complete SING filter configuration.
(1) PARAM/PUSH encoder with switches, allows adjustment to a large variety of parameters and the user can enter the menu
by press the PUSH button.
(2) FILTER SEL (Program/filter selecting button), the user may select up to 12 filters or 10 programs. When "P->" is displayed,
the user may select desired programs; when pressing this button once, "FILTER->"will be displayed on the LCD, and at such
time, the user may select desired filters. When pressing the button once again, "P->" will be displayed and the user may select
desired programs.
(3) FILTER MODE (Filter mode selecting button). When this button is pressed, the user can select the operating mode of filter
with the encoder. Two modes available: "SING" (single-point mode) and "AUTO"(automatic mode). In addition, when the user
presses down buttons FILTER MODE and FILTER SEL at the same time, he/she can enter the auxiliary parameter configuration
menu (NOISE GATE, HPF, LPF, Q, LED DISPLAY, SENSITIVE).
(4) CHL, (5) CHR Left/right channel parameter adjustment activation button, which may be used to modify parameters of the
left and right channels. If the user wishes to modify parameters of both the left and right channels, he/she should press buttons
CHL and CHR at the same time. In addition, when the user modifies any of the two channels and then switches to parallel mode,
the parameters of one channel will be copied to the other, that is, if the user presses CHL button before he/she presses CHR
button, parameters of the left channel will be copied to the right channel.
(6) BYPASS may be used to bypass all feedback suppression filters.
(7) STORE button. The user may use the STORE button to save any modification to the preset value. Please note that the user
needs to press the button twice continuously to save the parameters before the saving prompt disappears.
(1) INPUT LEVEL, input level adjusting knob. The device can be adapted to different working levels through the toggle switch,
and you can choose +4dBu or -10dBV.
(2) ANALOG INPUT. This product has XLR or TRS input jacks, and each group of XLR and TRS jacks is connected in parallel and
can be used for balanced or unbalanced connections.
(3) ANALOG OUTPUT. This product has XLR or TRS output jack, and each group of XLR and TRS jacks is connected in parallel
and can be used for balanced or unbalanced connections.
(4) Power socket. Before connecting the device to the power source, please make sure that the displayed voltage corresponds
to your local mains power supply. Please note that a fuse of proper type and rated value should be installed in this device on
the basis of the power supply voltage required by this device (Please refer to section 4.1 "Specifications"). Please connect the
device to the mains power supply with the enclosed power cable.
(5) RS232 interface for firmware upgrade
