Short answer: the JBL HDI-3600. Both are rated 4.3/5 for sound quality (#63 and #74 of 226 floorstanding speakers), and the JBL HDI-3600 costs $3,800 against $4,200 for the Arendal Sound 1723 Tower THX, with sound quality a draw, the lower price decides it.
The Arendal Sound 1723 Tower THX is the deeper-bass choice. The large tower of Arendal’s THX Ultra certified 1723 series, with a 28mm tweeter in a waveguide and four 8” woofers in a 2.5-way layout. Its bass reaches about 21Hz before falling 10dB, against 62Hz for the JBL HDI-3600. The catch: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from the measured 1723 Monitor THX.
Why pick the JBL HDI-3600: CEA2034 spinorama shows a fairly even on-axis response and flat overall frequency response, with high 90dB sensitivity and very low distortion through the midrange. Watch for: A wide shelving-down above 2kHz affects the in-room response, and vertical dispersion is a bigger issue than horizontal: the reviewer noted the dip is wider here than on the smaller JBL HDI-1600, making it more audible.
Buy the JBL HDI-3600. Both are rated the same for sound quality, and it costs $400 less than the Arendal Sound 1723 Tower THX.
Worth knowing: the Arendal Sound 1723 Tower THX has not been measured yet. Its rating is estimated from related models, with a likely range of 4.0 to 4.5, so treat this verdict as provisional.
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Specifications Side By Side
| Arendal Sound 1723 Tower THX | JBL HDI-3600 | |
|---|---|---|
| Price | $4,200 per pair | $3800 per pair |
| Ranked | #74 of 226 in Large Size Floorstanding Speakers Estimated | #63 of 226 in Large Size Floorstanding Speakers |
| Drivers | 28mm tweeter, 4 x 8” woofers | 2410H-2 1” compression driver, 3x 6.5” Advanced Aluminum Matrix woofers |
| Frequency Response | 37Hz - 20kHz -6dB anechoic (manufacturer specified) | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
| Sensitivity | 92dB (2.83V/1m, manufacturer specified) | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 4 ohms nominal (manufacturer specified) | 4 ohms nominal |
| Bass Extension (-3dB) | 45Hz (manufacturer specified) | 78Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
| Bass Extension (-10dB) | 21Hz (manufacturer specified) | 62Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
| Crossover Frequency | 120Hz, 1.5kHz | - |
| Woofer Cabinet | ported (port plugs included) | ported, dual rear-firing |
| Dimensions | 45.3”H x 10.8”W x 15.7”D (1150 x 275 x 400 mm) | 40.5”H x 10.2”W x 13.5”D (1029 x 260 x 343 mm) |
| Weight | 111.6 lbs (50.6 kg) each | 61.7 lbs (28 kg) each |
| DIY Kit | No | No |
| Spinorama Preference Score | - | 4.64 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | - | 6.95 (spinorama.org) |
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Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Arendal Sound 1723 Tower THX: $4,200 per pair Estimated Arendal Sound eBay
Same family: the Arendal 1723 Bookshelf S THX (smallest bookshelf, rated 4.2/5), the Arendal Sound 1723 Monitor S THX (bookshelf, rated 4.1/5), the Arendal Sound 1723 Monitor THX (largest bookshelf, rated 4.2/5), the Arendal Sound 1723 Tower S THX (smaller floorstanding, ranked lower, estimated 4.2/5), the Arendal Sound 1723 Center S THX (smaller center, estimated 3.7/5) and the Arendal Sound 1723 Center THX (larger center, estimated 3.8/5).
Pros: The large tower of Arendal’s THX Ultra certified 1723 series, with a 28mm tweeter in a waveguide and four 8” woofers in a 2.5-way layout. The measured 1723 Monitor THX, which uses the same tweeter and waveguide, scored a 5.16 Spinorama preference score. Arendal rates it to 37Hz (-6dB) anechoic with 92dB sensitivity, and supplied port plugs let you seal it for use with subwoofers.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from the measured 1723 Monitor THX. It weighs 50.6kg each and is a 4 ohm load.
Full Arendal Sound 1723 Tower THX review and specifications →
| Released | 2017 (9 years ago) |
|---|---|
| Bass Extension (-10dB) | 21Hz (manufacturer specified) |
| Bass Extension (-3dB) | 45Hz (manufacturer specified) |
| Crossover Frequency | 120Hz, 1.5kHz |
| DIY Kit | No |
| Dimensions | 45.3”H x 10.8”W x 15.7”D (1150 x 275 x 400 mm) |
| Drivers | 28mm tweeter, 4 x 8” woofers |
| Frequency Response | 37Hz - 20kHz -6dB anechoic (manufacturer specified) |
| Impedance | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 92dB (2.83V/1m, manufacturer specified) |
| Weight | 111.6 lbs (50.6 kg) each |
| Woofer Cabinet | ported (port plugs included) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
JBL HDI-3600: $3800 per pair Audio Advice eBay
Same family: the JBL HDI-1600 (bookshelf, rated 4.2/5), the JBL HDI-3800 (larger floorstanding, ranked higher, rated 4.5/5), the JBL HDI-4500 (center, rated 3.7/5) and the JBL HDI-1200P (subwoofer, rated 3.9/5).
Pros: CEA2034 spinorama shows a fairly even on-axis response and flat overall frequency response, with high 90dB sensitivity and very low distortion through the midrange. Triple 6.5” Advanced Aluminum Matrix woofers and a 1” compression driver in JBL’s HDI waveguide. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 89.5dB.
Cons: A wide shelving-down above 2kHz affects the in-room response, and vertical dispersion is a bigger issue than horizontal: the reviewer noted the dip is wider here than on the smaller JBL HDI-1600, making it more audible. Narrow vertical sweet spot means careful listener-height positioning matters more than usual.
Full JBL HDI-3600 review and specifications →
| Released | Jun 2020 (6 years ago) |
|---|---|
| Bass Extension (-10dB) | 62Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
| Bass Extension (-3dB) | 78Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 40.5”H x 10.2”W x 13.5”D (1029 x 260 x 343 mm) |
| Drivers | 2410H-2 1” compression driver, 3x 6.5” Advanced Aluminum Matrix woofers |
| Frequency Response | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 4 ohms nominal |
| Sensitivity | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 4.64 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.95 (spinorama.org) |
| Weight | 61.7 lbs (28 kg) each |
| Woofer Cabinet | ported, dual rear-firing |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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