I notice you round the corners of your speaker in simulation is this just how the speaker is to be constructed, a delibrate nod to diffraction or to reduce simulation artifacts? (or some combination)
Some minor changes to improve response.
2k DI bump is annoying me.
Maybe bounce from the top and bottom surfaces?
2k DI bump is annoying me.
Maybe bounce from the top and bottom surfaces?
Nice !Today I designed a dev board for an old PWM dsp from D2 Audio / now Renesas.
https://www.renesas.com/us/en/produ...lligent-digital-amplifier-and-sound-processor
I have 12 channels of PWM high & low buffered output (SN74LVC2G34) at 5.5V. SNR>110dB & THD+N <0.01% .
- 2 x I2S input
- 2 x SPDIF input
- 1 x SPDIF output
- protection inputs
- 90mm x 120mm
MCU for initial programming to the dsp memory plus volume & tilt pot.
In theory I could use the PWM high & low buffered outputs as speaker low output test drivers (25ma) with suitable filtering.
View attachment 1109614View attachment 1109616
My d2-92633-lr broke down a long time ago, so I'm very interested in your dev board.
Would you mind sharing more info on it ?
I made a board exposing all I/O. I use it for testing various power stages. 🙂
There are no power stages on board, just 5.5V level complementary PWM for up to 12ch.
What info would you like to know?
There are no power stages on board, just 5.5V level complementary PWM for up to 12ch.
What info would you like to know?
Congrats, nice project.
Well I'd love your PCB layout so I could adapt it to my needs, and then build it.
Are these small aligned things on the other board loudspeakers ? How high can they go in frequency ?
Well I'd love your PCB layout so I could adapt it to my needs, and then build it.
Are these small aligned things on the other board loudspeakers ? How high can they go in frequency ?
- Home
- Loudspeakers
- Multi-Way
- array of micro speakers with shading in ATH4 horn