HackRF Portapack H1 Loudspeaker

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Update 26 September 2021:

I posted an improved design with a different loudspeaker:
https://www.thingiverse.com/thing:4975411

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This is a cover for HackRF Portapack H1 with two mini-loudspeakers. There is some air volume inside the cover intended to improve bass sound.

The two speakers are still monaural; Portapack H1 does not support stereo sound.

To activate the speakers under the Mayhem firmware: Goto Options/Interface. The topmost clickbox must show a red "X". A loudspeaker symbol will appear at the top. Activate the loudspeaker (loudspeaker symbol turns green). Goto e.g. Receivers/Audio. Set the volume to 90 (at the extreme right of the second row from the top).

Speaker: Pair of 8 Ohm 1 Watt 28 x 9 x 4 mm
Connect them in series (2 x 8 = 16 Ohm)

I got mine via Aliexpress from the KY WIN ROBOT shop:
https://www.aliexpr