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THX Ultra certified

Our 1723 S speakers are certified by the very strict testing protocol of THX Ultra where each speaker have to pass a set of 400 measurements. The THX certification does not mean it is a dedicated home theater speaker, but rather a guarantee of tight consistency within well established acoustic parameters. THX certification is as much about music, as for movies. THX engineers test of different scientifically-formulated criteria to ensure the highest audio visual standards possible. 

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Custom made parts

Stress (or accelerated life) testing, is a hallmark of all Arendal Sound designs. Each new design is required to pass a long list of difficult (if not totally insane) tests. Lofty goals require custom parts and special attention to details at each step in the path to product realisation. No off-the-shelf drivers were worthy of satisfying all of our goals. Over two years in development, each driver is first modeled using advanced FEA (Finite Element Analysis) techniques to meet mechanical, electromagnetic and acoustic goals. 

Premium Build Quality

No Plastic.


Unique waveguide - The heart of our speakerdesigns

The heart of all Arendal speakers, our Tweeter utilizes a 28mm synthetic soft dome with custom designed, matching waveguide. The role of the waveguide is to take an already excellent tweeter and provide refinements to the tweeter’s performance. The size and shape, although appearing rather simple is in fact the result of painstaking modeling, testing and refinement. In precisely controlling directivity across the tweeter’s frequency range, we are able to broaden top end dispersion, which the tweeter naturally wants to beam straight ahead and focus frequencies at the bottom end of the tweeters range, which naturally want to spread out in all directions. This provides a more consistent polar response across the tweeters entire range and provided a close match to the dispersion pattern of the mid-bass driver it works with, simplifying crossover design.


10 years warranty

Luckily for you and for us, Arendal Sound products are extremely durable products which have gone through extreme stress tests during development. However failures may happen and if it does, you will always know we are here for you. Arendal Sound have up to 10 years warranty (5 for electronics) which cover all costs for you as a customer within the warranty terms. 


The Story

How it all began.

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1723 Series Comparison Subwoofers
Woofer 13.8"
2 x 13.8" 2 x 13.8"
Enclosure High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF) High Density Fiberboard (HDF)
Amplifier Avalanche 500DSP - 500W RMS
Avalanche 500DSP - 500W RMS
Avalanche 1000DSP - 1000W RMS
Avalanche 1000DSP - 1000W RMS
Design Sealed
Sealed / vented
Sealed Sealed / vented
49.2H x 33.5W x 45D cm
63.7H x 45W x 55D cm 54.2H x 42W x 50D cm 71.2H x 50W x 60.9D cm
Weight 24.5 kg 48.1 kg 41.4 kg 60.1 kg