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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Dayton Audio DAEX25 Pair of Sound Exciters (Black)

Dayton Audio DAEX25 Pair of Sound Exciters (Black)

Product ID: 1823953

Details

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

📏9.3 cm piezoelectric driver

🔊20,000 Hz vibration speed

🛠️3M adhesive for secure mounting

¥8084

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Description

🔊 Turn your world into a concert—sound that’s seen but never heard coming!

EFFORTLESS SETUP - 3M adhesive pads ensure fast, secure placement on virtually any surface—no tools required.
COMPACT POWERHOUSE - Sleek 9.3 cm piezoelectric drivers deliver rich audio output in a minimal footprint.
UNIVERSAL COMPATIBILITY - Seamlessly connect with laptops, smartphones, and PCs for versatile, wired audio enhancement.
INVISIBLE SURROUND SOUND - Transform any solid surface into a hidden speaker system for immersive audio without clutter.
PRECISION VIBRATION TECH - Experience crystal-clear sound with vibrations reaching up to 20,000 cycles per second.

The Dayton Audio DAEX25 Sound Exciters convert any solid surface into a powerful speaker by vibrating at up to 20,000 cycles per second. Featuring 9.3 cm piezoelectric drivers and secure 3M adhesive pads, these compact devices create hidden surround sound systems compatible with laptops, smartphones, and PCs, delivering immersive audio without visible speakers.

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	9.3 centimeters
Audio Driver Type	Piezoelectric Driver
Audio Output Mode	Surround
Best Sellers Rank	#11,669 in Musical Instruments ( See Top 100 in Musical Instruments ) #4 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	4.4 out of 5 stars 749 Reviews
EU Spare Part Availability Duration	5 years
Enclosure Material	Plastic Or Metal
Frequency Response	20000 hertz
Global Trade Identification Number	00844632070709
Impedance	8 ohm
Is Waterproof	FALSE
Item Dimensions D x W x H	0.75"D x 3.59"W x 3.59"H
Item Weight	6.4 ounces
Manufacturer	Dayton Audio
Model Name	DAEX25
Model Number	DAEX25
Mounting Type	Portable
Number Of Circuits	1
Number of Audio Channels	2
Power Source	Corded Electric
Signal-to-Noise Ratio	60 db
Speaker Maximum Output Power	10 watts
Speaker Size	9.3 centimeters
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 Count
Warranty Description	1 Year
Warranty Type	Full
Wireless Technology	Bluetooth, Wi-Fi
Woofer Diameter	9.31 centimeters

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¥8084

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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