1723 Tower THX

Custom built 2.5 way lineup of bass drivers

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.

1723 Tower THX

Hi-End connections

Rhodium-plated copper terminals. The aluminum backplate is precisely recessed for a perfect fit in the HDF cabinet.

1723 Tower THX


High-quality steel bars and premium spikes. Washers are also included to protect your wooden floor.

1723 Tower THX

The premium feel

Magnetically fastened steel grills, wrapped in premium cloth for a smooth look. A “thump” and the grill is snapped onto the gorgeous HDF cabinet in premium paint.

1723 Tower THX

Tune your bass nirvana

Massive bass. Massive ports. Tune your bass to your liking. Three (3) ports make four (4) different variations including sealed for optimized dynamics.

1723 Tower THX

Enclosure tilt

Enclosure tilt at 2.5 degrees for the best soundstage in the listening position. It looks cool too.

Professional reviews

They are that good and it is just that simple. It seems that all the praises about Arendals are well deserved.

iiWi Reviews

This speaker is truly a high end speaker in every regard possible and is none like other affordable products I have reviewed on this channel.

Jay's iyagi

They may be some of the best looking speakers I've seen in a while


If you're looking for a pair of speakers that show remarkable agility both in music and movies, 1723 Tower THX is a brilliant choice.

AV Plus

We found out that the Norwegian loudspeakers are really exciting. The Arendal 1723 display a big and mighty appearance and then show a really superior sound, capable of handling any situation.

HiFi Test

THX 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 home 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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Technical specifications

4 x 8″
Sealed / vented
High Density Fiberboard (HDF)
120Hz / 1500Hz
Sealed 55-20kHz (+/-3dB)
3 vents 38-20kHz (+/-3dB)
2 vents 34-20KHz (+/-3dB)
3 x 2.6″
4-ohm nominal
Grilles. Manual. Spikes Kit. Rubber feet. Port plugs.
115H x 27.5W x 40D cm
116.2H x 27.5W x 40D cm
119.1H x 37W x 40D cm
50.6 kg (including spikes kit)
50 hours
Up to 500W RMS @ 4ohm

Frequency response

Frequency response does not reflect maximum output but shows its true response in a anechoic chamber. Typically you will see an elevated response in the bass response below 40Hz in room due to room gain, which can add around 6dB pr. octave under 40Hz depending on the size of your room.

Polar response

The charts display frequency response measured at different angles, the sum of which is referred to as power response. Much scientific research has been undertaken on this subject and a linear power response has proven a substantial impact on the overall sound, because the frequency response is more even in all directions. This means an Arendal Sound speaker will be more tolerant of differences in room shape, size, construction and materials.

Impedance response

The impedance charts are electrical measurements of the loudspeaker’s resistance vs frequency.

Product compliance

CE marking is an administrative marking with which the manufacturer or importer affirms its conformity with European health, safety, and environmental protection standards for products sold within the European Economic Area (EEA).
RoHS is an abbreviation for “Restriction of (the use of certain) Hazardous Substances in electrical and electronic Equipment”. This directive restricts the use of ten hazardous materials in the manufacture of various types of electronic and electrical equipment. It is closely linked with the Waste Electrical and Electronic Equipment Directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods and is part of a legislative initiative to solve the problem of huge amounts of toxic electronic waste.