1. WOOD CONE MICRO COMPONENT SYSTEM EX-A15 2009/06/22

2. EX-A15 Product concept Wood Cone system with No.1 Expressive sound DVD Player DVD-Audio/Video HDMI-out with CEC [1080p up conversion] DIVX standard / JPEG play back USB Host USB Music Recording [CD only, MP3, 128kbps, x1] Vibration suppression mechanism Independent power supply RECEIVER POWER: Wo: 40W x 2 + Tw: 30W x 2 4ch Bi-amp structure FM (RDS) / AM Tuner New High-quality sound amplifier “Hybrid Feedback Digital Amplifier” JVC original “K2 technology” for higher sound quality 2ch mode for connection with other speakers [4Ω/40Wx2] Vibration suppression mechanism Independent power supply iPod option Dock (not include) Ready SPEAKERS Sound boards and ribs make significant improvement in expressive base sound 10cm advanced Wood Cone Woofer with “Anisotropic diaphragm” Maple wood chip absorber makes clearer base sound and higher sound resolution. Improvement of 10 cm woofer unit. Improvement of 2cm tweeter unit. Larger speaker cabinet for richer bass sound [compared with EX-A10]

3. ・ Clear sound ・ Finer “pianissimo” expression ・ Heavier bass sound ・ High resolution bass sound ・ Cloudy sound ・ Difficulty of “pianissimo” expression ・ Lighter bass sound ・ lower resolution of bass sound Bad effects for sound quality by vibration Vibration suppression mechanism Hybrid insulator, Ark base and High gravity disc tray Hybrid insulator Brass foot Ark base 9mm MDF ark base High gravity disc tray High rigidity honeycomb construction Suede finish with high gravity resin material incl. glass Minimize the mechanical vibration and achieve high quality sound

4. 1.Wider bandwidth （ refer fig. 1 ） ❑ EX-A15 ： 80kHz@ -3dB, 4Ω ❑ EX-A3 ： 50kHz@ -3dB, 4Ω Higher expression for acoustic field including harmonic overtone. 2 ． Decrease distortion rate, improvement of S/N （ refer fig. 2 b ） less distortion sound by expanding loop gain to higher range. New Hybrid Digital Feedback Amplifier 0 -2 -4 -6 -8 -10 2 4 -3dB Normalized Gain [dB] wider bandwidth EX-A3 EX-A15 1kHz10kHz100kHz Fig. 1: frequency relativity with gain Frequency

5. 2ch mode function enabled to connect other speakers that customer likes Wo: 40W + 40W Tw: 30W + 30W Bi-Amp Bi-Whirling 40W x 2 2ch Mode Connecting with SP-EXA15 Other SPKs 2ch mode for connectable with other speakers The specification and quality that when used in 2ch mode is much higher than EX-A10

6. This construction improves deep bass sound dramatically with enhanced sound field and large-scale audio reproduction. Sound boards and ribs “ “ is fiber direction ① ② ③ ④ ⑤ Five bamboo parts double-decker construction PATPEND Internal braces are optimally placed within the enclosure

7. Graph of the sound pressure on the point of Frequency 7.8kHz Normal WOODCONE EX-AR3 （ Japan model) Anisotropic diaphragm EX-AR3LTD （ Japan model)) This graph said anisotropic diaphragm could make sound field wider Anisotropic diaphragm makes faster horizontal / vertical sound propagation. This creates detailed resolution and superior sound field. Anisotropic diaphragm Thin wooden sheets are attached on the back of the woofer diaphragm ※ Wooden sheets is put on front surface of diaphragm of EX- AR3LTD, not on back side.

8. New wood chip absorber Wood chip absorber made of maple makes clearer base sound and higher sound resolution. Wood material superficial dimension (m 2 /g) EX-A15 Maple 0.61 EX-A3 Cherry 0.37 Cherry Maple Frequency (Hz) Normal incidence sound absorption coefficient α High-tone range impedance tube, sample size Φ29-40mm Normal incidence sound absorption coefficient Cherry for EX-A3 Maple for EX-A15 Higher absorption coefficient material “maple” is much better for pure and high resolution sound We adopted the world’s 1 st cherry wood chip absorber for EX-A3 for clear sound and pureness on high-tone range. We will improve the sound quality by changing the material from cherry to maple For EX-A15

9. Improvement of 10 cm woofer Improves on sound field expression WOOFER SPK cap improvement Material: BIRCH EX-A10 EX-A15 Material: CHERRY Direction: verticalDirection: horizontal Additional 3 acoustic adjustment parts 1. Aluminum short ring 2. Cupper cap 1 & 2 reduces acoustic distortion considerably 3. Acoustic Wood chip 3 Improves on sound field expression for vertical direction Fiber direction: vertical

10. Material improvement POLYESTER SILK Improves on three- dimensional sound image and airy expression Improvement of 2 cm tweeter EX-A10 EX-A15 Improves sound purity and realistic voice coil: CCA (Copper Clad Aluminum) This material is easy to solder which have particular sound voice coil: 6NOFC 99.9999 purity 6N OFC voice coil Acoustic wood chip Acoustic Wood chip Improves on sound field expression for vertical direction Fiber direction: vertical

11. Sound Tuning with JVC Studio Engineers Studio engineers from the Tokyo Aoyama Recording Studio collaborated in the final sound-tuning stage of the Wood Cone systems. Advice and opinions from the sound- creation experts helped to successfully complete the painstaking process of fine tuning aimed to reproduce sound that is as close as possible to what musicians and composers originally intended. Professional tuned by Victor studio

12. Thank you