if I have 8 of these for a conference room, do I wire them parallel? Also, these show as having 5w transformers, does that mean Id need min 40w amp?

Yes and no... Your amplifier has to be capable of 25v or 70v output, and you just wire them from one to the other, and so on...this is NOT a 4-Ohm/8-Ohm setup with these speakers, you treat them like parallel lighting I wouldn’t put a 40w amp on 8 5w speakers, I’d use at least a 50w or more

are there ceiling tile speakers with volume control

Yes...perhaps as many as there are without volume controls...you could also add the control to any ceiling speaker lacking one. The control is called an L-Pad, which is basically a potentiometer...I checked options and costs online and they can run from $5.00 to $15.00 each.

Do you need the baffle to install this in a ceiling?

My answer would be that it depends on the material that it is hanging from. Whenever this type of speaker is installed on a drop ceiling, you should always install an appropriate metal support frame to prevent the weight of the speaker to cause the ceiling tile to collapse, potentially injuring occupants. If ceiling tiles are exposed to a small water leak they will collapse quickly. If you're going to mount it in a drywall, make sure to use toggle bolts. Any ceiling-mounted speaker should have a back-up cable type of support system in the event that the structure it is mounted to collapses. I have seen situations where water leaks have caused a collapse of a ceiling, and the energizing of wet floor surfaces with 70 volts.

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Professional CSS8008 Commercial Series Round Ceiling Speaker, 8”. 5-Watt Multi-Tap Transformer for 100V, 70V and 25V Distributed Lines. Single Speaker. White and Paintable

Product ID: 4810268

Details

Audio Output Mode
Stereo
Brand
JBL
Connectivity Technology
Wired
Frequency Response
16 KHz
Speaker Maximum Output Power
15 watts

⚡5-Watt multi-tap transformer

📡120° wide conical coverage

🔊8-inch dynamic driver

S$155

Duties & taxes included

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Description

🎵 Elevate your space with sound that speaks volumes—JBL CSS8008 means business!

POWERFUL 8 INCH DRIVER - Experience crystal-clear sound with a high-sensitivity 96 dB speaker that fills any commercial space effortlessly.
EFFORTLESS INSTALLATION - Pre-assembled grille and transformer combo with standard 11¼ inch bolt mounting ensures a quick, hassle-free setup.
ROBUST PAINTABLE DESIGN - Durable zinc-plated steel grille that’s paintable to blend perfectly with your interior aesthetic—style meets function.
OPTIMIZED FOR COMMERCIAL SPACES - Ideal for retail, restaurants, offices, and schools, delivering consistent background music and paging with superior bass extension.
VERSATILE MULTI TAP TRANSFORMER - Seamlessly compatible with 100V, 70V, and 25V distributed lines for flexible installation and optimal sound control.

The JBL Professional CSS8008 is an 8-inch round ceiling speaker designed for commercial paging and background music applications. Featuring a high-sensitivity 96 dB driver and a 5-Watt multi-tap transformer compatible with 100V, 70V, and 25V lines, it delivers powerful, clear audio with wide 120° coverage. Its pre-assembled, paintable grille and easy bolt-mount installation make it a durable, stylish, and efficient choice for retail, office, and educational environments. Sold individually with official JBL warranty from authorized dealers.

Specifications

ASIN	B004W4EB9G
Additional Features	100 Volt, 70 Volt
Age Range Description	Adult
Antenna Location	Music
Audio Driver Size	8 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Battery Average Life	10 hours
Best Sellers Rank	#20,423 in Electronics ( See Top 100 in Electronics ) #16 in Ceiling & In-Wall Speakers
Brand	JBL
Built-In Media	Power Cable, Speaker, User Manual
Color	white
Compatible Devices	Amplifier
Compatible with Vehicle Type	Car
Connectivity Protocol	wired
Connectivity Technology	Wired
Control Method	App
Controller Type	Remote Control
Customer Reviews	4.7 4.7 out of 5 stars (268)
Enclosure Material	Multiple
Frequency Response	16 KHz
Global Trade Identification Number	00050036903929
Impedance	8 ohm
Input Voltage	25 volts
Is Waterproof	FALSE
Item Dimensions D x W x H	15"D x 15"W x 4"H
Item Type Name	JBL CSS8008200 mm (8 in) Commercial Series Ceiling Speakers
Item Weight	300 g
Manufacturer	JBL Professional
Model Name	CSS8008
Model Number	CSS8008
Mounting Type	Ceiling Mount
Number of Audio Channels	1
Number of Items	1
Power Source	Passive
Speaker Maximum Output Power	15 watts
Speaker Size	8 inches
Speaker Type	In-Ceiling
Specific Uses For Product	Commercial paging and background music
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	8 inches
Tweeter Diameter	1 inches
UPC	050036903929
Unit Count	1 Count
Warranty Description	This product is sold by an authorized jbl professional north american dealer and includes the official jbl professional manufacturer’s warranty. The warranty is valid only for products purchased from authorized sellers within the united states. Full details are available on the jbl professional website.
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	8 inches

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