nikitasius
Roadie
- Messages
- 138
At home, with my guitar, I use a Boss GT-1000 Core as the main brain and feed my Carlsbro GLX80 through the return with my music. :)
The Boss has two noise gates, and they work nicely but are pretty basic. I was googling a bit and found the Sentry — a digital noise gate made by TC Electronic. The price was just €85, so why not? I grabbed it, along with two sets of GHS Boomers for my Jackson.
Measurements taken with my hacked (thanks, EEVblog <3) Siglent. As a signal generator I’m using a 300 mV pk-to-pk signal from my hacked Rigol. Sentry settings are set to 12.
As usual: all photos and screenshots are on my Gdrive: https://drive.google.com/drive/folders/1ASMEk3R2TSroM05pK3R_Hk5Dod5IInEU
Device latency is about 2.60 ms, which corresponds to roughly 89 cm of sound in air.
Here is my ref sin wave 1kHz:
Here is the same sine wave after enabling the gate:
It has 1.47–1.56 MHz noise riding inside the sine wave:
Not an issue at all — the Boss or the amp will filter it out just fine.
Here are the two waves; “blue” is the reference:
For the FFT I used a linear sweep from 82.41 Hz to 329.63 Hz in 140 ms.
here is without noise gate:
here are with gate enabled:
Now I limited the bandwidth to 20 MHz to check the power noise:
It measures 3.52 mV at 35.21 kHz, and within that there’s 1.70 mV at 132 kHz. I guess it could be useful to add some extra caps.
Hardware :)
Pedal/Gate is made from metal and feels rock solid:
once opened if have some triggers
HW list:
CPU: Microchip RISC AVR32 AT32UC3B1256
DSP: Analog ADSP-21478
OPAMP: 4558
CAPS: Lelon & "unknown"
some other stuff - enjoy the photos :)
The device is very well made — rock solid, almost military-grade :)
For music, I use it before the Boss to remove noise and string _wizz-wizz_ on distortion. In the Boss, I keep a light noise gate after the preamp.
The Boss has two noise gates, and they work nicely but are pretty basic. I was googling a bit and found the Sentry — a digital noise gate made by TC Electronic. The price was just €85, so why not? I grabbed it, along with two sets of GHS Boomers for my Jackson.
Measurements taken with my hacked (thanks, EEVblog <3) Siglent. As a signal generator I’m using a 300 mV pk-to-pk signal from my hacked Rigol. Sentry settings are set to 12.
As usual: all photos and screenshots are on my Gdrive: https://drive.google.com/drive/folders/1ASMEk3R2TSroM05pK3R_Hk5Dod5IInEU
- The device has true bypass.
- The device starts draining the battery when you short (i.e., plug in) the INPUT.
- The device draws 83–85 mA from a fresh battery, and around 87–88 mA once the 9 V drops to about 7.7 V.
Device latency is about 2.60 ms, which corresponds to roughly 89 cm of sound in air.
Here is my ref sin wave 1kHz:
Here is the same sine wave after enabling the gate:
It has 1.47–1.56 MHz noise riding inside the sine wave:
Not an issue at all — the Boss or the amp will filter it out just fine.
Here are the two waves; “blue” is the reference:
For the FFT I used a linear sweep from 82.41 Hz to 329.63 Hz in 140 ms.
here is without noise gate:
here are with gate enabled:
Now I limited the bandwidth to 20 MHz to check the power noise:
It measures 3.52 mV at 35.21 kHz, and within that there’s 1.70 mV at 132 kHz. I guess it could be useful to add some extra caps.
Hardware :)
Pedal/Gate is made from metal and feels rock solid:
once opened if have some triggers
HW list:
CPU: Microchip RISC AVR32 AT32UC3B1256
DSP: Analog ADSP-21478
OPAMP: 4558
CAPS: Lelon & "unknown"
some other stuff - enjoy the photos :)
The device is very well made — rock solid, almost military-grade :)
For music, I use it before the Boss to remove noise and string _wizz-wizz_ on distortion. In the Boss, I keep a light noise gate after the preamp.
