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TECHNICAL STUFF For all the technical geeks, like us
Quality in every piece.


There is no question that we thoroughly enjoy what we do, and while some may call us geeks, we wear it with pride. There are a painstaking amount of hours involved with developing any small part for our products, be it the material composition of the driver cones, or even something as miniscule as the shape, size and material choice for speaker terminals. We have a habit of spending a lot of time and effort to get everything just right. There are no coincidental design features on Arendal Sound products.

This section contains descriptions of the technical aspects of Arendal Sound products. Please continue reading on, if you like getting to know all the technical details.


How we do things


How we do things


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:

Power handling
Frequency response
Polar characteristics

Experience has shown that each of these factors must be addressed for each design to fully achieve its sonic potential. If too much emphasis is placed on one factor, others will be compromised. There are many examples of loudspeaker designs that sound very good at modest levels, but when called upon to reproduce true dynamics the sound quality quickly disappears. Conversely, there are examples of high output speakers that can play quite loud and fill a room but are often characterized by sonic colorations that can range from displeasing to outright offensive – not very musical. The art and science behind Arendal Sound is to achieve all of the seductive nuances that make music so enjoyable and yet maintain composure with very demanding dynamics – this critical, but not easily achievable combination is the key.


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 insane) tests. From full out power testing repeated for days and in some cases for weeks, plus mechanical, thermal and vibration tests; all are designed to quickly identify and correct any potential problems during the design phase. If a component broke, we found out why and discarded it for something better. The result is a product that is as bulletproof as possible to ensure years of unbroken enjoyment.


Totally insane testing


Totally insane testing


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.

Each component was specially evaluated and specified for each product. From the simplest screw, to crossover inductors, resistors and capacitors, the voice coil wire’s thermal characteristics and adhesives; all were selected with the goal of sonic accuracy driving all decisions. After the ground work, comes modeling, CAD and tooling. All speakers and subwoofers are then thoroughly analyzed using state of the art Klippel laser based measurement system, Audio Precision and Clio, alongside other electro-acoustic testing systems and proprietary (secret sauce) methods. Lastly, extensive listening tests to validates that the science meets the requirement of the art. Many refinements are made along the way. The final products are a culmination of experience, modeling, testing, and listening… Along with a lot of blood, sweat and tears and in the end, more than a bit of pride.




Higher density and naturally better damped than MDF (Medium Density Fiberboard), using HDF (High Density Fiberboard) results in a sonically inert cabinet. HDF was also chosen because it can be machined much more precisely than MDF, which is especially important for precision critical areas like the two part HDF & Aluminum waveguide.

Arendal Sound products are using HDF thicknesses ranging from 15 to 50mm throughout the designs, with critical areas like driver mounting and cabinet bases being the thickest.

Internal bracing has been strategically placed to increase overall cabinet strength and limit unwanted panel vibrations that may cause audible colorations. Internal braces are CNC routed to shape to smooth internal airflow and minimize volume losses within the cabinet, whilst maintaining thickness at critical assembly joints.

The final detail for 1723 Tower, Monitor and Center, is to apply a butyl based differential mass damping layer to the inner faces of the cabinet, just to be sure we have damped out every last resonance in the large enclosures. Butyl is not added for 1723 S speakers as these have smaller enclosures and did not give any differences in testbench measuring or audible differences.


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.

In addition, we did not want plastic pins to add the grill, which will degrade the clean look of the cabinet with pin cups. Neodymium sub-surface magnets grip the metal grill with great force, preventing unwanted movement and vibration during high level playback. The grills have a rubber protection to ensure the cabinet is not damaged when you attach the grill and you will hear a nice ‘thump’ when you let them seat. Grilles on or off, our speakers look and sound great either way.


Green Sound. Well, you may find a cable strap somewhere in plastic, but all components in Arendal Sound 1723 Series which affect the sound are built up from non-plastic parts, like our high grade aluminium back plates on subwoofers and speakers. Even our logo is in anodized aluminium.


All subwoofers come with rigid rubber feet (M6 threads) which have a strong grip on the floor. You will not have a subwoofer walking around, even if that is impossible due to the sheer mass of our HDF cabinets which are “super quiet”. Put your hand on our speakers whilst they are playing and you will feel very, very little.


Not your average zip cord. All products utilize high count multi-strand wire, braided together.  These were not done for looks, but chosen to produce the most consistent impedance possible and electrical current carrying capabilities. The benefit is very low insertion losses without the problems of “skin effect” caused by large diameter wires. This insures that each driver sees what the amplifier intended without additional colorations.

To ensure the best and long lasting quality, Arendal Sound speakers use up to 12 layers of paint, consisting of primers and polyurethane paint, hand finished. We use no vinyl, anywhere.

The finish is what you would expect from Hi-End products.





Real and lifelike dynamics are one of the core features of Arendal Sound products. It is bred into the 1723 series DNA to exhibit proper dynamic output. The ability to simply make your feet start moving when listening to music, or for that matter an unexpected explosion on a movie scene that is so abrupt it downright scares you.


In short it really means how well a speaker copes with the range of volume from soft to loud during music playback or movies. A speaker/subwoofer that is not able to reproduce the entire dynamic range of the source will sound very dull, laid back and flat. Some speakers/subwoofers are able to handle the dynamic range of the content, which means they hit the SPL levels they should according to the input signal – but that is just half of the equation, they need to be able to follow the input signal also without any sign of compression or distortion. It is not an easy feet, but when done right it makes listening to music and watching movies so that much more engaging and lifelike.


A really dynamic speaker/subwoofer can scare you when they are supposed to. Like when an entire orchestra hit each of their instruments at the same time with all their effort, or an explosion or gunshot in a movie. In real life these events can really scare or at least startle you, and a very dynamic speaker/subwoofer will do the same. These are what one refer to as macro dynamics.

Micro dynamics on the other hand has more to do with the detail of for example percussive instruments, the finger nails touching guitar strings, a drum stick lightly tapping a drum or similar sounds – if a speaker represents good micro dynamics these type of sounds will have a real sound to them, somewhat distinct and absolutely discernable from other sounds.


Firstly you need a powerful motor that has complete control of the cone movement, but just a powerful motor in itself is not enough. If you have a heavy mass that needs to be moved back and forth it is still going to sound sloppy and slow. Some subwoofer manufacturers actually do that on purpose, to achieve greater performance at very low frequencies. That is the recipe for a one-note kind of bass that lacks dynamics.

In our thinking it is a bit like, let’s say having a sumo wrestler compete against a professional sprinter in a 100m run. They are both really strong, but that big guy is just not going to be in even the same realm. It’s the same for woofers, if you make the moving mass as light as possible within the specifications of its frequency response, and couple it to a really powerful motor you have a very good starting point for extreme dynamics. This is how we start our designs for speakers and subwoofers. Obviously there is some secret sauce involved behind the nuts and bolts, but that is the basics.

You can get both, depth and dynamics, but it takes more than a powerful motor and massive suspension.


Frequency Response


Frequency Response


You want to see the curves? Frequency, impedance and polar response charts for all products linked here.

All loudspeaker measurements are made in anechoic chamber, measured at 2.83v/1m. The subwoofers are measured at ground plane to get realistic frequency response, measured at 2.83v/1m.

Disclaimer: These measurements does not represent the actual response you will get in-room. In your room the speakers will be affected by room gain and surrounding objects/walls causing the bass levels to be elevated as well as the overall frequencies to be affected.

Click here to see Graphs & Data for all our products.

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