16db speaker attenuator
About the 16db speaker attenuator PCB
16db speaker attenuator is an open source PCB design by atoomnetmarc, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 96.5 × 40.6 mm, with 11 components from 7 distinct parts.
By type, the board carries 9 resistors and 2 connectors.
It belongs with the audio designs in this gallery.
From the project
A simple resistive divider network to dampen the output of an audio amplifier 16db.
A simple resistive divider network to dampen the output of an audio amplifier 16db.
See that spike at 6kHz? It was always there no matter what volume my Logitech Z-5500 Digital was set to. Very annoying.
The solution was this attenuator circuit that was fitted to each of the 5 channels of the amplifier. That peak at 6kHz is now 16db less annoying. Problem solved.
16db speaker attenuator bill of materials (BOM)
11 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Screw_Terminal_01x02 | TerminalBlock_Altech_AK300-2_P5.00mm | J1, J2 |
| 4 | 6.8 | R_Axial_DIN0918_L18.0mm_D9.0mm_P25.40mm_Horizontal | R1, R2, R3, R4 |
| 1 | 750 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 5100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 1.6 | R_Axial_DIN0918_L18.0mm_D9.0mm_P25.40mm_Horizontal | R10 |
| 1 | 33 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11 |
| 1 | 150 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12 |
16db speaker attenuator design files
The KiCad project lives in the atoomnetmarc/16db-speaker-attenuator repository on GitHub; these links point at the commit this page was built from.
16db speaker attenuator: common questions
How big is the 16db speaker attenuator PCB?
The 16db speaker attenuator measures 96.5 × 40.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 16db speaker attenuator?
11 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the 16db speaker attenuator design files?
From the atoomnetmarc/16db-speaker-attenuator repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the 16db speaker attenuator design in my own project?
Yes, under the terms of its Apache-2.0 license, which atoomnetmarc chose for the repository.
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