Project Name M-DCPS MASTER Nov. 2014
Project No. SPECIFICATION GUIDELINES 13745 − 12
a. Room Speakers: Mounted in clock/speaker combination baffles.
b. Interior Ceiling Speakers:
1) Mounted in baffle with back-box and T-bar Support.
2) Adequately support speakers in acoustical ceilings by hanger wires to
eliminate panel deflection.
c. Exterior Speakers: In weatherproof housing.
2. Speakers shall be tapped according to room requirements.
3. Provide keyed operated speaker controls (On/Off) at:
a. CCTV Control room and CCTV Studio.
b. Cafetorium/Auditorium Stage area.
c. Other locations as may be called for on the Contract Documents.
4. Provide a speaker (high-low) volume control switch at the Principal’s and at each
Assistant Principal’s Office. Locate volume switch adjacent to the Staff’s technology
center at 48" AFF.
F. Call-in Switches:
1. Classroom call-in switches shall be Rauland TCDPB2 or A/E accepted equivalent.
G. Raceways:
1. Raceways shall be in accordance with M-DCPS Section 13740 – Intercom and Clock
Raceway System.
H. Clock/Speaker Enclosures: As supplied by the intercom equipment contractor.
I. Wire:
1. Wiring shall be according to good engineering practices as established by the EIA
and NEC.
2. Wiring shall meet established state and local electrical codes.
3. Wiring shall test free from grounds and shorts.
4. Install wiring according to the following:
a. Cable Requirements:
1) Administrative Telephones, Speakers, Call-in Switches, Emergency Call
Answer Panel: West Penn #373 for aboveground use and West Penn
AQC#369 for underground use or accepted equivalent. Cat5 cable or better
is acceptable for systems having the capability to utilize this type cable.
b. Speaker wire shall be a shielded cable. Conductors shall be color-coded.
c. Microphone wire shall be a 2-conductor shielded cable, No.18 AWG, with PVC
jacket, for microphone use, West Penn Cable No.293 or equal.
d. Digital Wall Display: As determined by system supplier.
e. Secondary Clocks: As called for in this Master Specification Section.
f. Wiring:
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