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.

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DAEX25 Audio Exciter Pair - Sound Exciter Pair Audio Transducer - 5 Watts RMS, 8 Ohms Impedance - 2 Pack - Turn Any Surface into a Speaker System

DAEX25 Audio Exciter Pair - Sound Exciter Pair Audio Transducer - 5 Watts RMS, 8 Ohms Impedance - 2 Pack - Turn Any Surface into a Speaker System

Product ID: 1823953

Details

Audio Output Mode
Surround
Brand
Dayton Audio
Connectivity Technology
wired
Frequency Response
20000 Hz
Speaker Maximum Output Power
10 Watts

⚡Up to 20,000 vibrations/sec

📏Compact 3.59" driver size

🔊5W RMS power output

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Turn your world into a concert—any surface, any time!

EFFORTLESS INSTALLATION - 3M adhesive pads ensure quick, secure mounting—upgrade your sound in minutes.
VERSATILE COMPATIBILITY - Works seamlessly with laptops, smartphones, and PCs for a modern, connected audio experience.
PRECISION VIBRATION TECH - Vibrates at 20,000 cycles per second for crisp highs and rich bass on diverse materials.
HIDDEN SURROUND SOUND MAGIC - Create sleek, invisible audio setups that impress without cluttering your space.
TRANSFORM ANY SURFACE INTO A SPEAKER - Turn tables, walls, or art into immersive sound sources—no bulky speakers needed.

The Dayton Audio DAEX25 Audio Exciter Pair delivers 5 watts RMS power and vibrates surfaces at up to 20,000 cycles per second, transforming everyday objects into high-quality speakers. Compact and easy to install with 3M adhesive pads, these exciters enable hidden surround sound setups compatible with wired devices like laptops and smartphones, perfect for professionals seeking sleek, immersive audio solutions.

Specifications

ASIN	B001EYEM8C
Additional Features	Transforms Solid Surfaces into Speakers
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
Best Sellers Rank	#17,193 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in Exciters & Enhancers Effects Processors
Brand	Dayton Audio
Color	Black
Compatible Devices	Laptop, Personal Computer, Smartphone
Connectivity Protocol	Bluetooth, Wi-Fi
Connectivity Technology	wired
Control Method	App
Customer Package Type	FFP
Customer Reviews	4.5 4.5 out of 5 stars (747)
EU Spare Part Availability Duration	5 Years
Enclosure Material	Plastic Or Metal
Frequency Response	20000 Hz
Global Trade Identification Number	00844632070709
Impedance	8 Ohms
Is Waterproof	FALSE
Item Dimensions D x W x H	0.75"D x 3.59"W x 3.59"H
Item Weight	5.6 ounces
MP3 player	No
Manufacturer	Dayton Audio
Model Name	DAEX25
Model Number	DAEX25
Mounting Type	Portable
Number Of Circuits	1
Number of Audio Channels	2.0
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
UPC	844632070709
Unit Count	1.0 Count
Warranty Description	1 Year
Warranty Type	Full
Wireless Technology	Bluetooth, Wi-Fi
Woofer Diameter	9.31 Centimeters

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