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Arendal Sound

Arendal Sound 1723 Tower THX

In stock

The 1723 Tower features a completely custom built 2.5 way lineup of bass drivers, mid bass drivers and waveguide tweeter you cannot find anywhere else. Our HDF cabinets, thick crossover PCBs and ancillary parts, feature engineering detail you will not find at anything like the price. You will find no plastic parts, even if we could have used them to keep costs down without affecting sound quality.

Black matte
White matte
Black gloss
White gloss

Arendal Sound 1723 TOWER THX REVIEW - AV Plus
Arendal Sound 1723 Tower - Best of HiFi Test 2018
Arendal Sound 1723 Tower Test - HiFi Test
Arendal Sound 1723 Tower review, Fidelity

Engineering & Development

From the beginning, Arendal Sound products were developed with the mindset to recreate the original sonic event, with the highest level of accuracy. This requires a special consideration to balancing several factors: Dynamics, linearity, distortion, power handling, frequency response and polar characteristics. Stress testing 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 insane) tests.

Lofty goals require custom parts and special attention to details at each step in the path to product realization. Each driver was specially developed from the ground up, requiring much expensive and special tooling. No off-the-shelf drivers were worthy of satisfying all of our goals. Over 2 years in development, following a painstaking progression from theory to reality - each driver is first modeled using advanced FEA (Finite Element Analysis) techniques to meet mechanical, electromagnetic and acoustic goals.

Premium Build Quality

Higher density and naturally better damped than MDF (Medium Density Fiberboard), using HDF (High Density Fiberboard) results in a sonically inert cabinet. Internal bracing has been strategically placed to increase overall cabinet strength and limit unwanted panel vibrations that may cause audible colorations.

We are especially proud of our new exclusive and fully custom made grills. For all Arendal Sound speakers we have made a free flowing, perforated metal grill which does not affect sound quality. We have then wrapped it with a clean black cloth to tone down the visually hard look, whilst simultaneously damping out any residual vibrations.

We use no plastic parts.

Waveguide Tweeter

The heart of all Arendal speakers, our Tweeter utilizes a 28mm synthetic soft dome with custom designed, matching waveguide. The soft dome itself is sourced from the high end stable of Dr. Kurt Mueller. It is very light weight, totally pistonic to ultra high frequencies, optimally damped, produced to exceedingly tight tolerances and specifically chosen for its sweet sound character and consistent frequency response. The role of the waveguide is to take an already excellent tweeter and provide refinements to the tweeter’s performance.

Massive & Clean bass

The four (4) 8” woofers in the Tower are built upon the same core fundamentals as the the 13.8” subwoofer, but with application specific details changed. The 8” cone does not have the glass fibre reinforcement of the 13.8” as it is already stiff enough and the base material’s inherent self-damping with its proprietary cone treatment is chief quality. An entirely bespoke design, the 8” mid-woofers are optimised to cover a very wide frequency range from 1500Hz, down to the lowest bass notes without a hint of cone resonance.

Spikes Kit

Included with the 1723 Tower. There would be no point in the time and attention we’ve put into the massive engineering of Arendal Sounds speakers, if we then asked you to sit it on top of wobbly M6 or M8 spikes. We took a look at what spikes actually do and then applied straight-forward, uncompromising engineering to deliver an effective, attractive solution that doesn’t cost the earth.

Speaker input posts

Not to be forgotten, the connection point of each speaker offers potential pitfalls for installation woes and signal degradations. Each binding post is made from copper (not brass or other lower conductivity metals), then CNC machined into shape. After the machining process is completed, each component is polished to insure burr free, smooth function and clean cosmetics. The final step is Rhodium plating. Chosen for its excellent conductivity, corrosion resistance and hardness; all serve to protect the copper material and music signal carried within.

Enclosure tuning

All Arendal speakers start with an optimal, low Q sealed box designs. Low frequency performance is accurately damped delivering a tight impulse response - the time the driver takes to stop moving after the signal has passed is very short - and rolls off at the natural sealed box rate of 12dB/octave below the combined box and driver resonant frequency. The Tower enclosures offer the ability to alternatively be used in a vented alignment. By removing the foam plugs inside the ports, low frequency -3dB point can be extended and given different bass characteristics.

Crossover network

Crossover design is a culmination of model, measure, listen, remodel, remeasure, re-listen, all the while refining performance in increasingly small steps. This is the single most time consuming task in loudspeaker design, as it is the glue without which, even the best components can be made to sound disjointed and poor. As with the overall design goals for all Arendal Sound products, the crossover must be up to the task to deliver on the promise of hi-fidelity and robust construction, without compromise. All models within the Arendal Sound family share common drive units and this applies equally to the treble to mid-bass crossover designs across the range. The Tower gains an extra low pass section for the additional bottom bass drivers.


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 backup you up. Arendal Sound have up to 10 Years warranty (5 for electronics) which cover all costs for you as a customer within the warranty terms.

Tech specs

Design 2.5-way
Tweeter 28 mm
Woofer 4 x 8"
Enclosure Sealed / vented
Enclosure material High Density Fiberboard (HDF)
Xover freq. 120Hz / 1500Hz
Sensitivity 92dB/2.83v/1m
Freq. response
Sealed 55-20kHz (+/-3dB)
3 vents 38-20kHz (+/-3dB)
2 vents 34-20KHz (+/-3dB)
Ports 3 x 2.6"
Impedance 4-ohms nominal
Included Manual. Spikes Kit. Port plugs.
Dimensions without feet 115H x 27.5W x 40D cm
Dimensions with rubber feet 116.2H x 27.5W x 40D cm
Dimensions with spikes kit 119.1H x 37W x 40D cm
Weight 50.6 kg (including spikes kit)
Break-in for optimal performance 50 hours
Recommended amplifier Up to 400W RMS @ 4ohm