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CITY OF MIAMI COMMISION CHAMBERS
3500 Pan American Drive, Miami Florida
LIGHTING & DIMMING SYSTEM
and/or
SOUND SYSTEM
Project No. 02-3162
R.I. Heisenbottle Architects, P.A.
340 Minorca Avenue, Suite 10
Coral Gables, FL 33134
Phone: (305) 446-7799
Fax: (305) 4-46-9275
ADDENDUM "No. 1" June 21, 2002
The following Amendments to the Specifications and Drawings are now in effect and are to be
complied with as a part of the original Contract Documents on the project. Drawings and Specifications
not specifically mentioned in this Addendum are not altered by any changes, amendments, deletions or
additions.
"INSTRUCTIONS TO BIDDERS":
Paragraph 2 —"LICENSES" is hereby amended to remove the requirement that "the Bidder shall hold a
current certified contractor license for the class of work or trade to be done from the State of Florida
Construction Industry Licensing Board, and a Qualified Business Organization Certificate as required
by the State of Florida, or shall hold a Certificate of Competency or State Contractor's Certificate of
Registration, in the appropriate trade required for the work, issued by the appropriate agency of Miami -
Dade County in accordance with Chapter 10 of the Miami -Dade County Code."
It is anticipated that at a future date this contract will be assigned to a general contractor who will have
as part of the construction team a licensed electrical contractor who will be responsible for providing
necessary power connections.
City of Miami
Commission Chambers Sound System
Addendum 1
The following changes have been requested.
Add press feeds to the rear wall of the COW room:
1) Add another "ADA-1" to the system.
a. Connect the input of this new ADA-1 in parallel with the input of the ADA-1
already show on the plans.
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b. Connect the outputs of this new ADA-1 to 2 new press feed panels.
2) Add 2 more press feed panels.
a. Each panel is 6 gang
b. Each panel has 8 chassis mount male 3 pin XLR connectors installed
c. These panels are located in the rear of the COW room. See attached sketch
for exact location,
d. The electrical contractor will provide a back box at each location.
e. The electrical contractor will provide 2 @ 1" conduits from each location to
"MJB1"
Add wireless mics to the Podium locations:
1) Add a Shure dual channel wireless microphone system model U24D/58 to the
system (dual channel diversity system complete with handheld x-miters with SM58
microphones).
2) Install the antennas in the Commission Chambers
a. Change the "HOH'' plate from single gang to 3 gang. The electrical engineer
will change the HOH Backbox from single gang to 3 gang and increase the
pipe size to 1 1/4".
b. Add 2 isolated bulkhead BNC connectors to the now 3 gang HOH plate for
remote antenna connections.
c. Connect the wireless receiver antenna inputs to these jacks.
d. Install the antennas remotely in the Commission Chambers on the wall 6'
apart.
3) Add two "Podium Location Change Over" switches to PAN-1.
a. Each switch is a 4PDT switch with gold contacts suitable for switching
microphone levels.
b. The wiper of the switch in connected to the input of the MDA-1 cards in
ADA-2.
c. One set of contacts in connected to the mic jacks located in the podium
position.
d. The other set of contacts is connected to the outputs of the wireless
microphone receiver.
4) Change the model number of the MIC-2 (podium mics) to Shure MX418/C
5) Add two Atlas round base mic stands with boom arms.
Please note the following changes (corrections) that the electrical engineer will make:
1) The conduit between MJB1 and the Audio Rack will be changed to 4"
2) The conduit between SJB1 and the Audio Rack will be changed to 3"
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3) The description in the symbol legend for PRS3 will be changed to read 6 gang
instead of 3 gang.
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END OF ADENDUM #1 — JUNE 21, 2002
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