Security Baffle

(1) Continuous power rating:

[10]

[15]

(Watts)

(2) Frequency response:

[80 to 12,000]

[30 to 20,000]

(Hz)

(3) Speaker diameter:

[Nominal 200]

[Nominal 200](3)

Speaker diameter

[Nominal 8]

(mm)(Inches)

2.1.5.3

Security Baffle

Provide [flush] [surface]-mounted speakers in security type enclosures.

Baffle shall consist of high tensile strength 275.6 MPa 40,000 psi case

aluminum alloy outer ring and stainless steel woven wire mesh speaker

screen spun over and attached to subplate mounting assembly.

a.

Baffle shall securely attached to speaker enclosure with

tamperproof flush screws. Speaker enclosure shall be acoustically

treated, of the correct depth for the speaker assembly to be

installed and shall be suitable for flush mounting in masonry

[wall] [ceiling].

b.

Baffle shall be securely mounted from the inside to a surface

mounted 11 gage tempered, aluminum plate, housing, rolled into

cylindrical shape heliarc welded. Installation shall include an

11 gage aluminum ring for support of speaker/baffle. All

components shall be attached with tamperproof, flush screws.

Housing shall be attached to mounting surface with lead shields on

masonry and machine bolts on structural steel.

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NOTE: Regarding text below, coordinate speaker

mounting detail on the drawings.

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c.

Monitor speakers shall be installed with each subsystem to have

monitoring feature. Speaker shall be rated at not less than 5

watts output continuous with frequency response from 100 Hz to

10,000 Hz. Nominal diameter shall not be less than 150 mm 6 inches.

Where speakers are indicated to be independently mounted,

speakers shall be provided with high impact plastic or stainless

steel baffle and shall be flush mounted in acoustically treated

back box. Provide speakers where monitor speaker is indicated to

be rack mounted with other equipment.

2.1.5.4

Amplifiers

Power amplifiers shall be [rack] [shelf]-mounted. [Where mounted in same

location as other audio equipment, all equipment shall be mounted in common

rack.] Power amplifiers shall contain circuit breaker for overload

protection, high temperature automatic reset protection and electronic

output protection. Power amplifiers shall as a minimum conform to the

following:

Audio Power Output:

[60]

[125]

[250]

[400]

(Watts)

Distortion (percent):

[5]

[2]

[5]

SECTION 16822N

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