How to pronounce /ɑ/ in English

The /ɑ/ sound is a low, tense, central vowel.

Jaw
Open your mouth wide.
Tongue
Tense your tongue, flatten it, and place it very low in the center of your mouth, not too far forward or back.
Lips
Keep your lips neutral.

Note: Depending on the dialect, this sound can be pronounced with your tongue in the center of your mouth or pulled back towards the throat.

Example words

/ʌ/ came out as an open "ah": "cut" sounded like "cot". Open your jaw only halfway and keep it short.
/ʌ/ came out rounded. Keep your lips relaxed.

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