Japanese cars are widely criticized for their bad sound proofing and poor sound system in particular. Regarding speaker systems, they are thought as not ideal mainly for two reasons.

First, most Japanese cars have fixed signal frequency. In other words, upgrading to an ordinary 2-way system won't have desirable sound effects. No doubt upgrading to an ordinary 3-way system would make a real difference but it would need physical reconstruction to A pillar, which is quite complicated and time-consuming.

Let's take Lexus as an example. Most Lexus cars have only two lines for head unit signal output and no OEM midrange at center console. That means when Lexus owners want an obviously improved sound, he or she has to have physical reconstruction in the car for upgade.

Second, most tweeters in Japanese cars are wideband speakers mounted under dash board, far from mid woofer mounted under door panel. It's very likely that the wideband speaker won't coordinate well with the mid woofer, causing loss of frequencies and making the sound stage too low.

Toyota's high-end SUVs have mostly 6 OEM speakers, but could not have perfect coordination across the frequency range. Even high-end cars sometimes could not meet the needs of audiophiles."

OEM center-channel speaker

These two prominent problems caused a headache for both car owners and car audio shops. That is where AE-30TH65 plays a role.

Anniversary edition speakers were designed in accordance with the dimension of wideband speakers in mainstream Japanese cars, with no need for physical reconstruction on A pillar.  First problem solved.

AE-UDD65 (UNIFY DUAL DRIVER) in OEM position

AE-MW165 (mid woofer) in OEM position

The installation of rainbow's 30th anniversary edition leaves no sign to the car body

Let's go back to the speaker. The 30th anniversary edition has a UNIFY DUAL DRIVER — a tweeter and a midrange that share a common basket and the embedded tweeter is concentrically aligned with the midrange cone, making it possible that most of the details are there and most tones are very distinct and separate.

The finely coated silk dome tweeter can generate a high frequency of 22kHz while the midrange extends to 400Hz. The UNIFY DUAL DRIVER installed at the center console coordinates well with the mid woofers mounted in the doors, creating a sound stage with proper height, width and room information.

If you assume "UNIFY DUAL DRIVER" is the only advantage of the anniversary edition, you may undervalue it. Because the mid woofer of the anniversary edition used "golden ration" for its design.

The golden ratio in diaphragm optimizes the performance of the whole system and in turn, the speaker system fully proves the effectiveness of "golden ration" in the speaker field.

The wideband UNIFY DUAL DRIVER, working with the gold-ratio-designed mid woofer offers easy mounting and markedly sound improvement for Japanese cars.

Rainbow's 30th anniversary edition meets the demands of easy installation and excellent listening experience, fully demonstrating rainbow's strength in product development.

Conclusion: rainbow's 30th anniversary edition will be a good answer for most Japanese cars, whether you examine it from aesthetic aspect or sound performance.