Dynaudio Special Forty vs Philharmonic BMR Monitor

Last updated: September 16, 2026

Short answer: the Philharmonic BMR Monitor. It ranks #76 of 130 bookshelf speakers by sound quality at $2200; the Dynaudio Special Forty ranks #86 and costs $3600, so there is not much of a tradeoff to weigh.

Dynaudio Special Forty vs Philharmonic BMR Monitor

What the Dynaudio Special Forty offers: Smooth, “buttery” overall tonal character consistent with Dynaudio’s house sound. Surprisingly precise, focused imaging despite wide horizontal radiation (about ±70°) - atypical, since wide-radiating speakers usually sacrifice some image precision in reflective rooms. Strong output capability: reached 100-101dB average at 3.5 meters with no audible distortion or woofer distress, and compression testing at 102dB shows the cabinet holding up mechanically well at extreme output. Bass reaches a genuine 50Hz (potentially 40Hz) in most rooms from a rear-ported design. Distortion stays below 1% at 86dB and doesn’t cross 3% THD until about 50Hz even at 96dB. Extra weight and impact on snares and percussion around 700-800Hz that the reviewer found appealing on many tracks. Watch for: A glaring, sometimes sibilant quality around 3-4kHz was the most noticeable issue in listening, the one thing the reviewer would want notched out with EQ. Multiple enclosure resonances appear between 500Hz-1kHz across on-axis, listening window, early-reflections, and sound-power measurements, corroborated by independent third-party CSD data showing similar 500-800Hz cabinet resonances. A dip around 1.2kHz traces to a cone-edge-to-surround compliance mismatch in the driver itself (confirmed by testing the bare driver’s impedance) - a known artifact common to many similarly-sized drivers across several manufacturers, contributing to elevated second-order distortion in that region. A somewhat laid-back, recessed 1-2kHz character (sometimes described as a “BBC dip”) gives an overall subdued quality that isn’t overtly problematic but shapes the tonal balance. Impedance drops below 3 ohms in the 100-200Hz region, requiring a genuinely 4-ohm-stable amplifier rather than an AVR. Rear port means it can’t be placed directly against a wall.

What the Philharmonic BMR Monitor offers: Three-way design combining a 6” SB Acoustics mid-woofer, a 2.5” Tectonic balanced-mode radiator (BMR) for the midrange, and a ribbon tweeter - premium component choices relative to the asking price. A clear improvement over the V1: the earlier version’s overly hot, plateauing treble has been resolved, leaving a genuinely good in-room response outside of one specific area. Extremely wide horizontal radiation of about ±70-80°, creating an enveloping, wide soundstage that illuminates the sidewalls. Well-built, attractive cabinet. Midrange and tweeter show no stress or elevated distortion even at higher output - all the compression and distortion issues trace back to the mid-woofer alone. Watch for: A 1-2dB bump around 2-3kHz creates a “glare” on vocals, guitars, and strings that the reviewer noticed consistently across many tracks. The extremely wide radiation trades off against imaging precision - instrument placement became noticeably more diffuse and harder to pinpoint in a narrower, more reflective room, though it improved substantially in a larger, more open room with less sidewall interaction. A suspected resonance around 500Hz shows up as an imbalance in sound power and horizontal directivity measurements, loosely correlating with a vague sense of resonance the reviewer heard subjectively. Moderate sensitivity (about 84.1dB anechoic) and a mid-woofer that runs out of steam under real stress - distortion exceeds 3% even at 100Hz at 96dB, and the reviewer notes SB Acoustics’ published excursion specs tend to overstate real-world linear excursion by nearly 2x. Significant compression appears at 102dB: the woofer audibly unloads around 120Hz, and the ribbon tweeter also compresses heavily at high output - not well suited to very loud two-channel listening (above about 90dB at 4 meters). In-room bass rolls off around 50Hz, so a subwoofer is recommended for most music. Benefits noticeably from a few bands of EQ if available.

Buy the Philharmonic BMR Monitor. It ranks higher for sound quality than the Dynaudio Special Forty and costs less, which settles it without a real tradeoff to make.

Still deciding? The full Passive Home rankings cover every ranked option.

Specifications Side By Side

Dynaudio Special Forty Philharmonic BMR Monitor
Price$3600 per pair$2200 per pair
Ranked#86 of 130 in Large Size Bookshelf Speakers#76 of 130 in Large Size Bookshelf Speakers
Bass Extension (-10dB)39Hz (measured, Erin's Audio Corner)32Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)54Hz (measured, Erin's Audio Corner)47Hz (measured, Erin's Audio Corner)
Dimensions14.1"H x 7.7"W x 12.1"D (358.1 x 195.6 x 307.3 mm)20"H x 8"W x 12.5"D (508 x 203.2 x 317.5 mm)
Impedance6 ohms nominal (4.9 ohms minimum above 80Hz, measured, Erin's Audio Corner)4 ohms nominal (3 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity83.5dB (measured, Erin's Audio Corner; 86dB manufacturer specified)84dB (measured, Erin's Audio Corner)
Drivers5.9" MSP (Magnesium Silicate Polymer) cone woofer, 1" Esotar soft dome tweeter6" Ceramic woofer, Balanced Mode Radiator 2.5" midrange, RAAL 64-10X OEM tweeter
Weight17.9 lbs (8.1 kg) each32 lbs (14.5 kg) each
Woofer Cabinetportedported, rear
Spinorama Preference Score3.85-
Spinorama Preference Score with Perfect Sub5.86-

More top alternatives to Philharmonic BMR Monitor:

Prices on this page were last checked September 16, 2026 at 12:41 AM 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.

As an eBay Partner, we may be compensated if you make a purchase.

The Two Speakers In Full

Dynaudio Special Forty: $3600 per pair Safeandsoundhq eBay

Dynaudio Special Forty ranking card

Pros: Smooth, “buttery” overall tonal character consistent with Dynaudio’s house sound. Surprisingly precise, focused imaging despite wide horizontal radiation (about ±70°) - atypical, since wide-radiating speakers usually sacrifice some image precision in reflective rooms. Strong output capability: reached 100-101dB average at 3.5 meters with no audible distortion or woofer distress, and compression testing at 102dB shows the cabinet holding up mechanically well at extreme output. Bass reaches a genuine 50Hz (potentially 40Hz) in most rooms from a rear-ported design. Distortion stays below 1% at 86dB and doesn’t cross 3% THD until about 50Hz even at 96dB. Extra weight and impact on snares and percussion around 700-800Hz that the reviewer found appealing on many tracks. Measured bass extension of 54Hz (-3dB), with a measured sensitivity of 83.5dB.

Cons: A glaring, sometimes sibilant quality around 3-4kHz was the most noticeable issue in listening, the one thing the reviewer would want notched out with EQ. Multiple enclosure resonances appear between 500Hz-1kHz across on-axis, listening window, early-reflections, and sound-power measurements, corroborated by independent third-party CSD data showing similar 500-800Hz cabinet resonances. A dip around 1.2kHz traces to a cone-edge-to-surround compliance mismatch in the driver itself (confirmed by testing the bare driver’s impedance) - a known artifact common to many similarly-sized drivers across several manufacturers, contributing to elevated second-order distortion in that region. A somewhat laid-back, recessed 1-2kHz character (sometimes described as a “BBC dip”) gives an overall subdued quality that isn’t overtly problematic but shapes the tonal balance. Impedance drops below 3 ohms in the 100-200Hz region, requiring a genuinely 4-ohm-stable amplifier rather than an AVR. Rear port means it can’t be placed directly against a wall.

Bass Extension (-10dB)39Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)54Hz (measured, Erin's Audio Corner)
Dimensions14.1"H x 7.7"W x 12.1"D (358.1 x 195.6 x 307.3 mm)
Drivers5.9" MSP (Magnesium Silicate Polymer) cone woofer, 1" Esotar soft dome tweeter
Impedance6 ohms nominal (4.9 ohms minimum above 80Hz, measured, Erin's Audio Corner)
Sensitivity83.5dB (measured, Erin's Audio Corner; 86dB manufacturer specified)
Spinorama Preference Score3.85
Spinorama Preference Score with Perfect Sub5.86
Weight17.9 lbs (8.1 kg) each
Woofer Cabinetported

Philharmonic BMR Monitor: $2200 per pair Philharmonicaudio eBay

Philharmonic BMR Monitor ranking card

Pros: Three-way design combining a 6” SB Acoustics mid-woofer, a 2.5” Tectonic balanced-mode radiator (BMR) for the midrange, and a ribbon tweeter - premium component choices relative to the asking price. A clear improvement over the V1: the earlier version’s overly hot, plateauing treble has been resolved, leaving a genuinely good in-room response outside of one specific area. Extremely wide horizontal radiation of about ±70-80°, creating an enveloping, wide soundstage that illuminates the sidewalls. Well-built, attractive cabinet. Midrange and tweeter show no stress or elevated distortion even at higher output - all the compression and distortion issues trace back to the mid-woofer alone. Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 84dB.

Cons: A 1-2dB bump around 2-3kHz creates a “glare” on vocals, guitars, and strings that the reviewer noticed consistently across many tracks. The extremely wide radiation trades off against imaging precision - instrument placement became noticeably more diffuse and harder to pinpoint in a narrower, more reflective room, though it improved substantially in a larger, more open room with less sidewall interaction. A suspected resonance around 500Hz shows up as an imbalance in sound power and horizontal directivity measurements, loosely correlating with a vague sense of resonance the reviewer heard subjectively. Moderate sensitivity (about 84.1dB anechoic) and a mid-woofer that runs out of steam under real stress - distortion exceeds 3% even at 100Hz at 96dB, and the reviewer notes SB Acoustics’ published excursion specs tend to overstate real-world linear excursion by nearly 2x. Significant compression appears at 102dB: the woofer audibly unloads around 120Hz, and the ribbon tweeter also compresses heavily at high output - not well suited to very loud two-channel listening (above about 90dB at 4 meters). In-room bass rolls off around 50Hz, so a subwoofer is recommended for most music. Benefits noticeably from a few bands of EQ if available.

Bass Extension (-10dB)32Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)47Hz (measured, Erin's Audio Corner)
Dimensions20"H x 8"W x 12.5"D (508 x 203.2 x 317.5 mm)
Drivers6" Ceramic woofer, Balanced Mode Radiator 2.5" midrange, RAAL 64-10X OEM tweeter
Impedance4 ohms nominal (3 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity84dB (measured, Erin's Audio Corner)
Weight32 lbs (14.5 kg) each
Woofer Cabinetported, rear