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1723 Tower THX

1723 Tower THX has a rating of 4.79 stars based on 38 reviews.
  • 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.

  • 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 (see chart here)
    Sealed 55-20kHz (+/-3dB)
    3 vents 38-20kHz (+/-3dB)
    2 vents 34-20KHz (+/-3dB)
    Ports 3 x 2.6"
    Impedance 4-ohms nominal
    Manual (1 pr. order). 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
    Manual Read our handbook here.
Size Guide

1723 Series Comparison Speakers

Enclosure High Density Fiberboard (HDF) High Density Fiberboard (HDF) High Density Fiberboard (HDF) High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
High Density Fiberboard (HDF)
Design Sealed / vented Sealed / vented Sealed / vented Sealed / vented Sealed Sealed / vented Sealed / vented Sealed Sealed -

98 x 24.5 x 32 (no feet)
99.2 x 24.5 x 32 (rubber feet)
102.1 x 31.5 x 32 (Spikes Kit)
(HxWxD) cm

115 x 27.5 x 40 (no feet)
116.2 x 27.5 x 40 (rubber feet)
119.1 x 37 x 40 (Spikes Kit)
(HxWxD) cm
56.95 x 24.5 x 32 (HxWxD) cm 63.5 x 27.5 x 40 (HxWxD) cm
38.5 x 24.5 x 32 (HxWxD) cm
24.5 x 56.95 x 32 (HxWxD) cm 27.5 x 63.5 x 40 (HxWxD) cm 38.5 x 37.1 x 17.5 (HxWxD) cm 45 x 43.2 x 21.6 (HxWxD) cm 55.6 x 37 x 40 (HxWxD) cm
Weight 31.3 kg 50.6 kg 18.7 kg 26.7 kg 14.5 kg 18.7 kg 26.7 kg 13.7 kg 17.4 kg 13.9 kg

In stock

Black Matte
White Matte
Black Gloss
White Gloss

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


2.5-way design
4 x 8” woofers
Waveguide tweeter
Class leading dynamic headroom
Sealed/vented enclosure
HDF enclosure - 50.6 kg

Product video

THX Ultra certified

All our 1723 speakers are Certified by the very strict testing protocols of THX Ultra where each speaker must pass a set of 400 measurements. The THX Certification does not mean it is a dedicated homer speaker, but rather a guarantee of tight consistency within well-established acoustic parameters. THX Certification is as much about music, as for movies.

The engineers at THX Labs utilize a proprietary scientific testing methodology to ensure the highest audio fidelity possible. All 1723 speakers passed the THX Ultra Certification without any change to the products, meaning our standards already exceed THX Ultra level out of the box!

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    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.

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    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.

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    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.

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    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.

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    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.

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    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.

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    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.

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    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.

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    Graphs & Data

    You want data? Frequency, impedance and polar response charts.

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    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.

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    Arendal Sound 1723 Handbook

    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