219.3 Receivers for Assistive Listening Systems Capacity of Seating in Assembly Area: 50 or less Minimum Number of Required Receivers: 2 Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 2 Capacity of Seating in Assembly Area: 51 to 200 Minimum Number of Required Receivers: 2, plus 1 per 25 seats over 50 seats, or fraction thereof. Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 2 Capacity of Seating in Assembly Area: 201 to 500 Minimum Number of Required Receivers: 2, plus 1 per 25 seats over 50 seats, or fraction thereof. Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 1 per 4 receivers, or fraction thereof Capacity of Seating in Assembly Area: 501 to 1000 Minimum Number of Required Receivers: 20, plus 1 per 33 seats over 500 seats, or fraction thereof. Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 1 per 4 receivers, or fraction thereof Capacity of Seating in Assembly Area: 1001 to 2000 Minimum Number of Required Receivers: 35, plus 1 per 50 seats over 1000 seats, or fraction thereof. Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 1 per 4 receivers, or fraction thereof Capacity of Seating in Assembly Area: 2001 and over Minimum Number of Required Receivers: 55 plus 1 per 100 seats over 2000 seats, or fraction thereof. Minimum Number of Required Receivers Required to be Hearing-aid Compatible: 1 per 4 receivers, or fraction thereof