Im assuming these have an impedance rating, but its not listed or mentioned; whats the impedence rating, in ohms?

According to what I've found elsewhere, 8 ohms of impedance, 5 watts RMS, 10 watts peak.

Will they work pressed up against a surface for temporary location or does it have to be stuck on with the adhesive?

Pressing them against the surface will prevent the transducer from vibrating. They work just like a speaker, minus the cone. They can be relocated. New 3m double sided works or hot glue's great too.

Mine has stopped working. Do these run out of battery over a period of time? Or just faulty?

It might be faulty. There's no battery in these; they need to be hooked up to an amp of some kind. The adhesive might have weakened or the speaker driver could have a short or be defective.

could these be concealed behind a bookcase or couch (with a gap)? or do they need to be unobstructed?

I think that the only problem would be that the sound will be obstructed but I don’t why you cannot do it.

Dayton Audio Daex25 Sound Exciter Pair

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your sound game—because ordinary speakers are so last decade.

VERSATILE COMPATIBILITY - Works seamlessly with laptops, smartphones, TVs, and more for a tailored audio upgrade.
RISK FREE 5 YEAR WARRANTY - Invest confidently with Dayton Audio’s industry-leading warranty and expert support.
FEEL THE BASS NOT JUST HEAR IT - Experience tactile low-frequency vibrations that bring gaming and home theater to life.
PLUG PLAY WITH SECURE MOUNTING - Strong 3M adhesive ensures effortless installation and rock-solid placement.
TRANSFORM ANY SURFACE INTO A SPEAKER - Turn wood, metal, or glass into immersive soundscapes with cutting-edge exciter tech.

The Dayton Audio DAEX25 Sound Exciter Pair delivers 20 watts of power through 8-ohm impedance exciters that transform any solid surface into a rich, immersive speaker. Featuring strong 3M adhesive for easy mounting, these exciters provide tactile bass vibrations ideal for gaming, home theaters, and custom audio setups. Compatible with a wide range of devices and backed by a 5-year warranty, the DAEX25 redefines how you experience sound.

Specifications

ASIN	B001EYEM8C
Additional Features	Surface Speaker and Bass Shaker Transducer
Age Range Description	Adult
Antenna Location	Transforming solid surfaces into speaker systems, creating hidden sound systems
Audio Driver Size	93.1 Millimeters
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Battery Average Life	5 Hours
Best Sellers Rank	#64,874 in Electronics ( See Top 100 in Electronics ) #171 in Coaxial Car Speakers
Brand	Dayton Audio
Built-In Media	Strong 3M adhesive pads
Color	black
Compatible Devices	Laptop, Personal computer, Smartphone, Tablet, Television
Connectivity Protocol	Bluetooth
Connectivity Technology	wired
Control Method	Touch
Controller Type	Remote Control
Customer Package Type	FFP
Customer Reviews	4.4 4.4 out of 5 stars (710)
EU Spare Part Availability Duration	5 Years
Enclosure Material	Plastic
Frequency Response	298 Hz
Global Trade Identification Number	00844632070709
Impedance	8 Ohms
Is Waterproof	False
Item Dimensions D x W x H	1.9D x 9.1W x 9.1H centimeters
Item Weight	159 g
MP3 player	No
Manufacturer	Dayton Audio
Model Name	DAEX25
Model Number	DAEX25
Mounting Type	Portable, Tabletop Mount
Number Of Circuits	1
Number of Audio Channels	2.0
Number of Items	2
Power Source	Corded Electric
Signal-to-Noise Ratio	60 dB
Speaker Maximum Output Power	10 Watts
Speaker Size	93.1 Millimeters
Speaker Type	Sound Exciter
Specific Uses For Product	Creating hidden surround sound systems, adding sound to unusual surfaces
Subwoofer Connectivity Technology	Wired
Tweeter Diameter	1 Inches
UPC	844632070709
Unit Count	1 Count
Warranty Type	Full
Water Resistance Level	Waterproof
Wireless Technology	Bluetooth
Woofer Diameter	9.31 Centimeters

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