speaker test ‣ AdPower Sonic

Back to its true and original pure sound

It all started by the encounter with an acoustic engineer.

AdPower improves airflow in car and motorbike engines, and AdPower Sonic was born after meeting Mr. Morimoto, a chief recording engineer at avex inc. and a long-time AdPower fan.

The project started when Mr. Morimoto asked if AdPower could be adapted for acoustic use. After attaching the car version to a studio speaker’s bass-reflex port and hearing the dramatic improvement in sound quality, the idea for AdPower Sonic took shape.

Koji Morimoto

prime sound studio form chief engineer
Vice-Chairman, Japan Association of Recording Engineers
avex entertainment

How to attach to speaker

With bass reflex port

For speakers with a bass reflex port, the best placement is directly on the port where airflow occurs. Improving airflow reduces air resistance and delivers clearer, more detailed sound.
If your speaker has multiple ports, apply AdPower Sonic evenly to each one.

Without bass reflex port

For sealed speakers without a bass reflex port, place AdPower Sonic on the baffle surface near the speaker unit. The optimal position varies by speaker design, so test several locations and choose the one that sounds best. In some cases, additional improvement can be achieved by applying it to the baffle surface even after placing one on a bass reflex port.

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Verification at AIST and Ritsumeikan University

“AdPower Sonic” applies the patented static electricity reduction technology originally developed for the AdPower automotive series.

Sound source analysis by the National Institute of Advanced Industrial Science and Technology (AIST) showed that attaching it to speakers tends to increase Interaural Cross-Correlation (IACC).

What is IACC.

Abbreviation for Inter Aural Correlation Coefficient, an indicator of sound spread (diffusivity).

Impulse response and sound source analyses were performed using Genelec 8020C and YAMAHA MS101III speakers in an anechoic room, a soundproof room, and a living room. No difference was observed in the anechoic room, but in the soundproof room and living room, AdPower Sonic consistently showed a tendency to increase IACC. This trend was confirmed across five sound sources—including jazz, classical, and natural sounds—with no variation between them.

Source: National Institute of Advanced Industrial Science and Technology (AIST)

Analysis conducted at the Acoustics and Signal Processing Labs of Ritsumeikan University showed that reverberation tends to increase in the low-frequency range (250–500 Hz), while at 125 Hz it tends to decrease.

These results suggest that listeners may perceive “tighter bass” and “clearer sound localization and definition.”

※The experience may vary depending on the model used and the individual. The experience of sound change is not necessarily guaranteed.

※Image is for reference only.

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User feedback

Sound contours are clearer. Less changes by the listening area and less influence from the room. Better sound reaches the rear of the studio. Localization has also improved.

Recording engineer

Speakers used: Wastlake Audio BBSM-4

Better bass tightness and clearer vocal range.

Recording engineer

Speakers used: PreSonos Sceptre S6

My concerns about the length of bass-reflex port and the delay in low frequencies due to DSP sound adjustment, but by using this product I no longer feel its delay in low frequencies and the treble extension has improved accordingly. Also, the sound has become clearer in general.

Composer

Speakers used: iLoud Micro Monitor

I use high-resolution monitor speakers, but using this product its resolution has been further improved. To control low frequency range, I used a subwoofer before because my speaker is high-resolution. But now the balance has become good, so I don't need it.

Recording engineer

Speakers used: GENELEC 8341

The speed of the low and high frequencies of the sound is aligned. Less change when changing the listening position. The localization feeling as if you were listening with headphones was obtained.

Mastering engineer

Equipment used: Monitor speakers, Amplifiers, Pre-amplifiers.

Noise is eliminated, the power is increased and more comfortable to play. Also, unnecessary resonance is reduced, and the sound has become clearer.

Drummer

Equipment used: Drums

The separation of each string improves and the rise of the strings changes quickly. The muddy parts are now clear and pleasant to play.

Composer

Instruments used: Guitar, Base

※The way you hear it depends on the individual and the model.

AdPower Sonic Hexagon

If you find the rectangular Sonic Series too powerful or if you prefer to fine-tune your sound quality, we recommend trying the more compact Hexagon S and SS sizes.

As with the existing Sonic product series, users can enjoy searching for their favourite sound by changing the place of application, and with colour variations suitable for fitting easily into brass instruments and other items, the new product looks even more stylish and can be customised more freely.

Hexagon is also recommended for small Bluetooth speakers, Amazon Alexa, soundbars, and more.

〜Hexagon〜 Users' feedback

It is small and easy to apply. I used to apply it only on the top and bottom of the bass reflex port on the rear side, but this one is easier to apply, so I added it in two places on the back side of the woofer lid. Personally, I found it more effective if I added more sheets.

Composers and mix engineer

I have the impression that the overtones are basically organised and the contours become clearer, no matter where you apply it. When I applied it to the inside of the saxophone bell, the sound clearly had more contour than the effect of the mass, and I was impressed how the sound, which was buried in the ensemble, now comes through.

Professional trumpet player

Instruments used: cornet, saxophone.

Review by Akimitsu Honma

Producer Akimitsu Honma, who has provided, arranged and produced music for many artists including Porno Graffitti and Ikimono-gakari, shares his impression on using AdPower Sonic.

Main equipment and instruments with proven effectiveness

Speaker

Amplifier

Drum

Wind instrument

Base

*Experience may vary depending on the model used and the individual. The experience of sound change is not necessarily guaranteed.

Monitor speaker Bass reflex port
Monitor speaker Baffle baffle surface
Built-in power amplifier type Power amplifier
Compact Bluetooth speaker enclosure
Power amplifier Front panel and top panel
Analogue equipment Front panel and top panel
Microphone Enclosure case
Power breaker panel Plastic enclosure
Breaker lever
Record player enclosure
Record disc surface (stabilizer)
Arm (needle) top surface
Equipment front panel, top panel
Outlet panel, outlet plug
Drum shell
Drum rim
Drum mute

Bass drum Impact pads
Guitar and bass amplifier Amplifier section
Guitar and bass amps Speaker cabinets
PA Speakers
PA amplifiers and peripheral equipment
Flute
Piccolo
Saxophone
Clarinet
Trumpet
Trombone
Horn
Euphonium
Tuba