HomeMy WebLinkAboutItem 7.2 Council Chamber Sound System r�I Z� is
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CITY OF DUBLIN
AGENDA STATEMENT
CITY COUNCIL MEETING DATE: September 10, 1990
SUBJECT: Council Chamber Audio System - Modifications
(Prepared by: Paul S. Rankin, Assistant City Manager)
EXHIBITS ATTACHED: None
RECOMMENDATION: Staff recommends that the City Council 1 ) Select Option
q� 1 plus the lighted mute switch 2) Authorize Staff to
issue a purchase order to Coast Business Communications
!� (CBC) and 3) Approve a Budget Transfer from the
Contingent Reserve.
FINANCIAL STATEMENT: Pedestal Option 1 : $3,674
Gooseneck Option 2: $4,884
DESCRIPTION: At the regular City Council meeting on August 27, 1990,
the City Council reviewed a report which outlined specific problems with
the current audio system layout. The City Council requested that Staff
develop further information on two options. Option 1 involves relocating
the existing pyramid microphones to a pedestal. Option 2 involves the
replacement of the pyramid type microphone with a gooseneck microphone.
Option 1 : Pedestal
As part of the follow-up review, CBC has tested the raised mounting of the
pyramid type microphone. The purpose of the test was to determine whether
the horizontal work surface in front of the microphone was integral with
the operation. The test showed that the sound quality is greatly improved
by raising the microphone above the dais backboard. The Contractor
believes that any minor detractions of the raised mounting can be
compensated for with other adjustments in the system.
The Contractor has obtained pricing for the construction of a custom
designed cherrywood pedestal. The intent is to assure that the wood
matches the existing casework to avoid the appearance of a patchwork
system. The unit cost per location is $150. In addition, there would be a
unit cost of $55 per location for wiring and mounting. CBC would be
providing a one year warranty on the work completed. The low profile
pyramid microphone appears to be an appropriate method of efficiently
meeting the City's needs.
Option 2: Gooseneck
The second option would involve the replacement of the existing microphones
with a gooseneck microphone. This type of microphone is currently used at
the two speaker lecterns. If this option is selected, the City would
continue to have a supply of pyramid microphones. The estimated cost of
the gooseneck type microphone is $260 per unit. In addition, the City
would incur a $55 per unit installation fee. Staff does not recommend this
option due to the cost and the fact that it places a visual element in
front of the faces of those seated around the dais. The Shure AMS sound
system does not have a gooseneck type microphone, which would be smaller
than those at the speaker lecterns.
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ITEM NO.
Mute Switch
As the sound system was being installed by the original contractor, Staff
was made aware of the design specification involving a momentary mute
switch. This requires that a person physically hold down the button the
entire time they wish to have the microphone in a mute mode. Staff also
recognized the advantage of a visual appearance as to the status of the
mute function. The City's Construction Manager attempted to obtain pricing
for these changes from the original installer. The intent was to complete
the work as a change order to the original construction. The subcontractor
was not responsive to the request for a quotation in a timely manner. Once
an estimate was received, it did not reflect the scope of work and exceeded
$9, 000. CBC has developed a solution which can be accommodated at a
reasonable price.
CBC proposes to mount an on/off type switch in the general location of the
current mute switch. CBC would install a small power supply which could
light two lights at each location. If the City Council selects Option 1 ,
it is proposed to mount a plate on each pedestal. The plate would be
engraved with "Microphone" across the top and "On" and "Off", on the
bottom. Above the "On" notation would be a green light and above the "Off"
would be a red light. This feature is important to reduce the potential
for background noises from papers and other items on the work surface. The
cost of this work as proposed by CBC is $104 per location.
Summary of Total Costs for 11 Locations
The following identifies the total costs for completing all modifications
including a mute switch and final tuning of the system.
Option 1 :
Pedestals $1 , 650
Installation/Wiring 605
Lighted Mute Switch 1 , 144
System Tuning 275
Total $3, 674
Option 2:
Gooseneck Microphones $2,860
Installation/Wiring 605
Lighted Mute Switch 1 , 144
System Tuning 275
Total $4,884
Option 1 results in an 8.4% savings over the combined modification cost
plus the least costly microphone option presented at the August 27, 1990
meeting.
Staff recommends that the City Council approve Option 1 ; authorize a budget
transfer from the contingent reserve in the amount of $3,674; and direct
Staff to proceed with the modifications by Coast Business Communications.
TO: City Council
FROM: Paul S . Rankin, Assistant City Manager
RE: City Council Chamber Audio System Revision
DATE: September 6, 1990
The Audio Contractor was attempting to obtain pricing on the revisions
proposed at the August 27, 1990 City Council meeting. They also requested
an opportunity to perform a test of the proposed modification. It is
anticipated that final information would not be available until Friday,
September 7, 1990.
A separate report will be delivered on Friday, September 7, 1990.
PSR:slh
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ITEM N0. T
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