# Speakers, amplifiers and microphones: 3 in, 40 mm, enclosed, STEMMA speaker, MAX98357, I2S/PDM mics

> What are the dimensions of the Adafruit 3 inch speaker and 40 mm speaker?

- Category: Electronics › Indicators
- Kind: Modern device
- Basis: Adafruit CAD (MIT) models; speaker frames measured from the models
- Page: https://xemstudio.com/objects/adafruit-audio-speakers-mics/ · JSON: https://xemstudio.com/api/geometry?object=adafruit-audio-speakers-mics · Plain text: https://xemstudio.com/objects/adafruit-audio-speakers-mics/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

## Notes

- 3 in 8 Ω speaker (1313): Ø78 mm frame, 4 × Ø4 mm holes on 68 mm, 36 mm deep with the magnet. 40 mm speaker (3968): Ø40 × 5 mm. Enclosed 3 W speaker (3351): 60 × 45 × 15 mm with a JST PH plug. Mini oval (3923): 20 × 30 × 5 mm.
- STEMMA speaker (3885): 40 × 25 mm board with a Ø25 mm speaker. Amps: MAX98357 I2S (3006) 18 × 22 mm; PAM8302 (2130) 18 × 18 mm. I2S MEMS mic (6049) and PDM mic (4346) 15 × 18 mm with a Ø1 mm port hole.
- Grille: hole area at least 30% of the cone area; a 1 mm gasket ring behind the frame stops buzz.

## Sizes

| product | bbox_l_mm | bbox_w_mm | bbox_h_mm |
|---|---|---|---|
| 1313 Speaker 3in 8Ohm 1W | 77.8 | 77.8 | 26.0 |
| 3351 Enclosed Speaker 3W 4Ohm | 70.0 | 30.0 | 19.7 |
| 3923 Mini Oval Speaker | 32.5 | 19.9 | 6.5 |
| 3968 Speaker 40mm | 40.0 | 40.0 | 25.0 |
| 3885 STEMMA Speaker | 36.8 | 30.5 | 6.6 |
| 3006 MAX98357 | 19.1 | 17.8 | 2.6 |
| 2130 PAM8302 | 24.1 | 15.2 | 3.1 |
| 6049 I2S MEMS Microphone | 16.5 | 12.7 | 2.6 |
| 4346 PDM Mic Breakout | 14.0 | 14.0 | 4.5 |
| 2133 Audio FX Soundboard with Headphone | 49.6 | 22.9 | 6.0 |
| 3436 Adafruit Music Maker Amp Feather Wing | 51.8 | 22.9 | 12.6 |
| 3692 TRS Jack | 27.6 | 9.2 | 8.0 |
| 5954 TRRS Trinkey | 41.9 | 15.2 | 7.7 |
| 987 MAX98306 Stereo Amp | 27.9 | 24.1 | 12.1 |
| 1752 MAX9744 | 55.3 | 43.6 | 10.6 |
| 6513 MAX98357 Stereo Amp | 25.4 | 19.1 | 11.9 |
| 6421 PCM5122 I2S DAC | 37.6 | 22.9 | 6.4 |

## Where the files are

- Adafruit (official): [Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products](https://github.com/adafruit/Adafruit_CAD_Parts) — STEP, F3D, STL — MIT

## Free STEP/STL (17 parts, MIT License (Adafruit_CAD_Parts), Adafruit Industries)

Index: https://xemstudio.com/files/adafruit/adafruit-audio-speakers-mics/index.json

- 1313-speaker-3in-8ohm-1w: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/1313%20Speaker%203in%208Ohm%201W/1313%20Speaker%203in%208Ohm%201W.step) — Adafruit #1313 Speaker 3in 8Ohm 1W; bbox 77.8 × 77.8 × 26.0 mm; 0.3 MB on GitHub
- 3351-enclosed-speaker-3w-4ohm: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3351%20Enclosed%20Speaker%203W%204Ohm/3351%20Enclosed%20Speaker%203W%204Ohm.step) — Adafruit #3351 Enclosed Speaker 3W 4Ohm; bbox 70.0 × 30.0 × 19.7 mm; 0.2 MB on GitHub
- 3923-mini-oval-speaker: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3923%20Mini%20Oval%20Speaker/3923%20Mini%20Oval%20Speaker.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3923%20Mini%20Oval%20Speaker/3923%20Mini%20Oval%20Speaker.stl) — Adafruit #3923 Mini Oval Speaker; bbox 32.5 × 19.9 × 6.5 mm; 0.1 MB on GitHub
- 3968-speaker-40mm: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3968%20Speaker%2040mm/3968%20Speaker%2040mm.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3968%20Speaker%2040mm/3968%20Speaker%2040mm.stl) — Adafruit #3968 Speaker 40mm; bbox 40.0 × 40.0 × 25.0 mm; 0.1 MB on GitHub
- 3885-stemma-speaker: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3885%20STEMMA%20Speaker/3885%20STEMMA%20Speaker%20rev%20A.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3885%20STEMMA%20Speaker/3885%20STEMMA%20Speaker%20rev%20A.stl) — Adafruit #3885 STEMMA Speaker; bbox 36.8 × 30.5 × 6.6 mm; 1.0 MB on GitHub
- 3006-max98357: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3006%20MAX98357/3006%20MAX98357.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3006%20MAX98357/3006%20MAX98357.stl) — Adafruit #3006 MAX98357; bbox 19.1 × 17.8 × 2.6 mm; 0.3 MB on GitHub
- 2130-pam8302: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/2130%20PAM8302/2130%20PAM8302.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/2130%20PAM8302/2130%20PAM8302.stl) — Adafruit #2130 PAM8302; bbox 24.1 × 15.2 × 3.1 mm; 0.1 MB on GitHub
- 6049-i2s-mems-microphone: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/6049%20I2S%20MEMS%20Microphone/6049%20I2S%20MEMS%20Microphone.step) — Adafruit #6049 I2S MEMS Microphone; bbox 16.5 × 12.7 × 2.6 mm; 2.0 MB on GitHub
- 4346-pdm-mic-breakout: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/4346%20PDM%20Mic%20Breakout/PDM%20Mic%20with%20JST%20SH.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/4346%20PDM%20Mic%20Breakout/PDM%20Mic%20with%20JST%20SH.stl) — Adafruit #4346 PDM Mic Breakout; bbox 14.0 × 14.0 × 4.5 mm; 0.3 MB on GitHub
- 2133-audio-fx-soundboard-with-headphone: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/2133%20Audio%20FX%20Soundboard%20with%20Headphone/2133%20Adafruit%20EZ-SFX%20with%20Headphone.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/2133%20Audio%20FX%20Soundboard%20with%20Headphone/2133%20Adafruit%20EZ-SFX%20with%20Headphone.stl) — Adafruit #2133 Audio FX Soundboard with Headphone; bbox 49.6 × 22.9 × 6.0 mm; 3.0 MB on GitHub
- 3436-adafruit-music-maker-amp-feather-wing: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3436%20Adafruit%20Music%20Maker%20Amp%20Feather%20Wing/3436%20Adafruit%20Music%20Maker%20Amp%20Feather%20Wing.step) — Adafruit #3436 Adafruit Music Maker Amp Feather Wing; bbox 51.8 × 22.9 × 12.6 mm; 0.2 MB on GitHub
- 3692-trs-jack: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/3692%20TRS%20Jack/3692%20TRS%20Jack.step) — Adafruit #3692 TRS Jack; bbox 27.6 × 9.2 × 8.0 mm; 0.2 MB on GitHub
- 5954-trrs-trinkey: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/5954%20TRRS%20Trinkey/5954%20TRRS%20Trinkey.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/5954%20TRRS%20Trinkey/5954%20TRRS%20Trinkey.stl) — Adafruit #5954 TRRS Trinkey; bbox 41.9 × 15.2 × 7.7 mm; 2.9 MB on GitHub
- 987-max98306-stereo-amp: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/987%20MAX98306%20Stereo%20Amp/987%20MAX98306%20Stereo%20Amp.step) · [STL](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/987%20MAX98306%20Stereo%20Amp/987%20MAX98306%20Stereo%20Amp.stl) — Adafruit #987 MAX98306 Stereo Amp; bbox 27.9 × 24.1 × 12.1 mm; 0.6 MB on GitHub
- 1752-max9744: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/1752%20MAX9744/1752%20MAX9744.step) — Adafruit #1752 MAX9744; bbox 55.3 × 43.6 × 10.6 mm; 0.0 MB on GitHub
- 6513-max98357-stereo-amp: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/6513%20MAX98357%20Stereo%20Amp/6513%20MAX98357%20Stereo%20Amp.step) — Adafruit #6513 MAX98357 Stereo Amp; bbox 25.4 × 19.1 × 11.9 mm; 5.7 MB on GitHub
- 6421-pcm5122-i2s-dac: [STEP](https://raw.githubusercontent.com/adafruit/Adafruit_CAD_Parts/main/6421%20PCM5122%20I2S%20DAC/6421%20PCM5122%20I2S%20DAC.step) — Adafruit #6421 PCM5122 I2S DAC; bbox 37.6 × 22.9 × 6.4 mm; 2.1 MB on GitHub

## Questions

**What are the Adafruit 3 inch speaker dimensions?**

Ø78 mm frame, mounting holes Ø4 on a 68 mm pattern, 36 mm deep including the magnet; 8 Ω 1 W.

**What size is the 40 mm speaker?**

Ø40 mm, 5 mm thick, 4 Ω 3 W, bare wire leads; needs a Ø38 mm opening or grille.

## Fits with

- [Buzzers and beepers: 12 mm, 15 mm magnetic; TDK PS1240 piezo](https://xemstudio.com/objects/buzzers-tht/)
- [Panel cutouts: IEC inlet, rockers, barrel jack, USB-C, HDMI, LEDs, Neutrik D](https://xemstudio.com/objects/panel-cutouts/)
- [Adafruit Feather boards and FeatherWings](https://xemstudio.com/objects/adafruit-feather-boards/)
- [Raspberry Pi 5](https://xemstudio.com/objects/raspberry-pi-5/)