AdPower Sonic - Japanese Sound Tuning Sheet for Speakers and Audio Equipment AdPower Sonic is a peel-and-stick audio tuning sheet made in Japan that applies patented static electricity suppression technology to speakers, instruments and audio equipment. Developed under the supervision of Koji Morimoto, Chief Recording Engineer at Avex, it is used by musicians, recording engineers and audio enthusiasts worldwide, and studied with Japan's AIST and Ritsumeikan University. Key Benefits Clearer sound definition and imaging - vocals coming forward, less harshness in the highs and improved bass clarity can be expected Just peel and apply - no tools or professional installation needed Works with large speakers, Bluetooth and smart speakers, soundbars and instruments Maintenance-free, affordable sound quality upgrade How This Audio Tuning Sheet Works Analysis at AIST found that applying AdPower Sonic to speakers tends to increase IACC (Inter-Aural Cross-Correlation Coefficient), an indicator of sound diffusion and spatial spread. Ritsumeikan University analysis showed reverberation tends to lengthen at 250-500 Hz and shorten at 125 Hz, which listeners may perceive as tighter bass and clearer imaging. Who Is This For? A tuning accessory for subtle changes in sound definition and imaging. Recommended if you are not fully satisfied with your current speakers, want better sound without replacing equipment, or feel your sound lacks depth. If you want a dramatic change, it may not meet your expectations. Sizes and Specifications XS (hexagonal): 1.4 cm dia. x 0.1 cm thick, 0.2 g - woofers up to 4 inches (100 mm) S (rectangular): H 1.6 x W 3.2 x 0.1 cm, 0.8 g - woofers up to 6 inches (150 mm) M (rectangular): H 2.7 x W 7.5 x 0.1 cm, 3 g - woofers up to 10 inches (250 mm) How to Install AdPower Sonic Check your woofer size first and confirm the sizes and number of sheets you need. 1. With no sheets applied, play a familiar track for about 30 seconds at a decent volume. 2. Apply all sheets to the appropriate positions. 3. Play the same part again and enjoy the change. Frequently Asked Questions Where to apply: the bass reflex port is the main position; with no port, use the baffle, the surface the speaker unit is mounted on. No effect? An unsuitable size, quantity or placement makes it harder to notice; leave the sheet on. Adjusting: add sheets for more effect, or use fewer or smaller sheets if it feels too strong. Lifespan: no set expiry, but replace every 2-3 years. Reapplying: possible, but it weakens adhesion, so avoid it where you can. Sound perception varies with environment, equipment and individual sensitivity; specific results are not guaranteed. ■Item Spec Size: XS Size (Hexagon): Diameter 13.5mm, Thickness 1mm / S Size (Rectangle): Height 16mm, Width 32mm, Thickness 1mm / M Size (Rectangle): Height 27mm, Width 75mm, Thickness 1mm Weight: XS Size: 0.2g / S Size: 0.8g / M Size: 3g
