What watage do they handel?

25 watts but,,,, I'm using a Lepal class T 25 watt amp to drive them.Since they are 16ohm they are only taking 1/4 the amp rated power. I am running 2 in parrellel making 8 ohms which pulls 12 watts from the amp.Now,,, They do drive to saturation with these amps, so it seems to be plenty of power.I would recommend you consider the TT25-8, which is an 8ohm unit. I have both. I use them in a simulator to produce road vibration, (iRacing).If you are using them for audio application it is improtant that you don't over drive them because they rattle if driven to the limits. (Not their fault).So your simple answer is 25watts.Also: It's rather complicated to calculate impedance since it's involving the inductance of the units not the DC resistance. From impedance you could calculate wattage, but the wire size and heat disapation determines power capability in watts.The most important part of using them is mounting them where they produce the vibration in a way you feel it.I mounted mine in a 8 inch long 1/4inch plywood mount with only one end secured to my chair. That lets the unit move as it receives input.I also have some hard mounted and that produces different results, (more fine vibration, less shaking vibration).I'd say to experiment with your application. Love the little Lepal amps.Hope this is a help Scott.

Do you have to waste channels on an avr for these, or how do you coordinate these with an existing home theater system?

My AVR has two subwoofer outputs so u used one.

Do they need an amp or can i plug directly into sub output on homr audio reciever

Yes, they will need an amp if your receiver sub output is not powered. Some receivers have powered sub outputs and some do not. I would check you receiver manual if you have it. (If you have used a sub on your receiver before and if that sub had to be plugged into an outlet along with the sub output from your receiver then most likely you will need an small amp to provide power to the dayton pucks.). Also... Just incase you are unfamilar with the dayton puck. They are not designed to produce sound. They just shake and give the feel of deep bass on the chair, couch etc... that you install them on. (Btw... I installed all 4 of them into a gaming chair and I think they work pretty well for their size.)

ASIN	B0073IXASQ
Best Sellers Rank	#116,811 in Electronics ( See Top 100 in Electronics ) #862 in Audio & Video Adapters
Colour	Black
Compatible devices	Desktop, Home Theater, Laptop, MP3 Player, Smartphone, Tablet, Television
Control method	Voice
Impedance	16 Ohms
Included components	User Manual
Is waterproof	False
Item model number	TT25-16-4
Item weight	1.36 kg
Manufacturer	Dayton Audio
Material	Aluminum
Model name	TT25-16 PUCK
Mounting type	Flush Mount
Number of Items	1
Power source	Corded Electric
Recommended uses for product	for gaming consoles
Speaker size	3.5 Inches
Speaker type	Surround Sound
Special features	Bass Boost, Hi Res Audio, Usb Port
Subwoofer diameter	3.5 Inches
Surround sound channel configuration	2.0 or 1.0
Wireless communication technologies	Bluetooth

Dayton Audio TT25-16 PUCK Tactile Transducer Mini Bass Shaker 16 Ohm 4 Pack

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