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1. Form and Function |
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The ELP declicker is a real-time hardware audio processor unit that runs the declick process in stereo. The process is optimized for clean 33 and 45 rpm records in
good condition. |
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2. Power Supply |
Voltage:
Power Consumption: |
9V DC +/- 1V
< 15W |
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3. Audio Input & Output |
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3.1 Analog Input & Output |
Connector:
Input Level:
Clipping Level:
Input Impedance: |
2 x phone socket
-10dBV nominal fixed
4V pk-pk
47 kOhm |
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3.2 Analog Audio Output |
Connector:
Output Level:
Max Output:
Output Impedance:
Load Impedance: |
2 x phono socket
-10dBV nominal fixed
4V pk-pk
100 Ohm
20 kOhm minimum |
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3.3 Digital Audio Output |
Coaxial Connector:
Optical Connector:
Protocol:
Wordlength: |
1 x photo socket
1 x "TOSLINK"
IEC60958 consumer (SPDIF)
24 bit |
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4. AD and DA Conversion |
Type:
Wordlength:
Gain:
Bandwidth:
LF -3dB Point:
HF -3dB Point:
HF -3dB Point:
Dynamic Range: |
linear PCM
24 bit
0dB nominal through unit
flat -1dB/+0.1 dB ref 1 kHz, 20 Hz - 20 kHz
< 10 Hz
> 20 kHz (44.1 kHz sample rate)
> 38 kHz (88.2 kHz sample rate)
> 100dB A-weighted through unit |
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5. Sample Rate |
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Sample Rate: |
44.1 kHz / 88.2 kHz user-selected |
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AD and DA conversion, the process itself, and the digital output all run at the same sample rate. The unit supports sample rate changes only with the power switched off. |
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6. Bypass |
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Bypass allows the user to leave the declicker unit in the signal chain, but not perform the declicking function. Bypass is switched on and off with a front-panel control.
Bypass operates in two modes: |
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Analog Mode: |
The analog output is connected directly to the analogue input with no AD-DA conversion. There will be an audible "glitch" when switching bypass on or off in this mode. |
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Glitch-Free Mode: |
The bypass is implemented by switching off the declick process. The signal continues to pass through AD-DA but no processing is performed. There is no glitch when switching bypass on or off in this mode. |
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The user sets which mode he wants to use with a switch on the rear panel. The unit supports bypass mode changes only with the power switched off. When bypass is switched on, the digital output carries an AD conversion of the analogue input. |
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7. Controls |
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7.1 Front Panel |
Power:
Bypass:
Sensitivity: |
on/off + indicator
on/off + indicator
continuously variable control |
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With the sensitivity set to "minimum" there will be negligible effect on the signal. |
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7.2 Rear Panel |
Bypass Mode:
Sample Rate Select: |
analog / glitch-free
44.1 kHz / 88.2 kHz |
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Rear-panel controls may be changed only with the power switched off. |
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8. Physical |
Look & Feel:
Dimensions:
Weight:
Case Material:
Finish:
Front Panel: |
Domestic Hi-Fi
approx. 216 x 45 x 152 mm (W x H x D)
approx. 2 kg
aluminum and steel
black powder coat (except front panel)
anodized aluminum |
