The Subwoofer 1.5 shares all of the same high quality components, design and build-up as our award winning subwoofers in the 1723 Series. Subwoofer 1.5 is simply a Subwoofer 1 on steroids. Same driver. Same amplifier with unique DSP tuning. HDF enclosure, but with a high precision slot port. It’s just scaled differently to offer another solution for our customers. Subwoofer 1.5 is equipped with a 13.8” driver and the Avalanche 500W amp with its massive power supply. The enclosure is big and ported, which can also be sealed for those who wants the edge in extra dynamics over sheer depth. Subwoofer 1.5 can deliver massive performance on movies, with real attention to detail and nuance in music. Movies or music. Perfect for both.
“Reference-grade, Outstanding.
Arendal has delivered another Highlight for home cinema enthusiasts with its 1723 Monitor S THX system. Being only marginally less dynamical than the bigger “sister models”, the Monitor S system plays with extreme precision and can also show off with a THX license.”
Michael Voigt, Hifi Test

BLACK GLOSS

WHITE GLOSS

BLACK SATIN

WHITE SATIN

Woofer | 13.8″ |
Enclosure | Sealed / Vented |
Enclosure material | High Density Fiberboard (HDF) |
Amplifier | Avalanche 500DSP 500W RMS |
Power cable | 2.5 meters |
Freq. response | |
EQ1 Sealed | 20-160Hz (+/-3dB) |
EQ1 Vented | 18-160Hz (+/-3dB) |
EQ2 Sealed | 24-160Hz (+/-3dB) |
EQ2 Vented | 22-160Hz (+/-3dB) |
Port | 2.5H x 35W cm |
Included | Power cable. Manual. Port plug. |
Dimensions without feet | 62.5H x 45W x 55D cm |
Dimensions with rubber cones | 63.7H x 45W x 55D cm |
Weight | 48.1 kg |
Break-in for optimal performance | 50 hours |


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. We use no plastic parts.
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AVALANCHE 500DSP AMPLIFIER
The brain of Arendal Sound subwoofers, the Avalanche 500DSP and The Avalanche 1000DSP.
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13.8″ WOOFER
Why 13.8”? The 25% larger surface area, when compared to a 12” driver, yields a woofer that requires less excursion and power to achieve the same SPL levels. Subwoofer 2 and Subwoofer 3 are using dual 13.8″ drivers.
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ENCLOSURE
TUNING
In all Arendal Subwoofers, we are offering options to tailor the output to suit your room and your tastes.
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MAGNETIC METAL GRILLS
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.
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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.
AWARDS & REVIEWS
Learn more about our products from happy customers and blown away magazines
GRAPHS & DATA
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.