Volume Control for Whites MXT

[OneAcre]

Has anyone succesfully added a volume control for the MXT E-Tracker's speaker? If so, how?

Recently I've been enjoying the therapeutic simplicity of my older bfo and tr type machines for shallow targets in the parks carrying only a pinpointer and probe for recovery. Volume control is necessary to avoid attention, oddly my older machines have this feature.

I already have volume controlled earphones as well as an inline earphone volume control for lightweight headphones when doing serious hunting with the MXT. Something that could be spliced in the positive speaker wire would be nice.

 

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[OneAcre]

There are only a couple sites that i could find showing this.

This one uses a 1k pot:
This one uses a 1k pot as well: https://www.instructables.com/Garrett-ACE-250-MOD-VolumeLCD-LightGround-Ballance/
A couple forums recommend a 10k pot.

The speaker on the Whites MXT is 16ohm / 0.3watts if that helps.

Some say it is better to place the pot at the amplifier rather than the speaker. It seems controlling at the speaker should work well since headphone volume controls are made that way.

I was hoping for someone with experience over time to weigh in verifying the workability of this preferably on the MXT