The answer to this question is somewhat complex. Bass response is limited by amplifier output and the range of music that a smaller speaker can play, so overall bass output (loudness) will not be increased in a significant way with the Stage 1. However, because of the higher quality components used in the Stage 1 Audio Upgrade, bass dynamics are improved, meaning you'll be able to enjoy bass notes more.

However, please note that on vehicles equipped with the Harman Kardon sound system, much of the bass response is generated by factory subwoofers which are unaffected by the Stage 1 Audio Upgrade in this regard. A subwoofer upgrade is required to improve the bass response of this component.

What type of speakers are included in your Stage I Audio Package?

Included in our Stage 1 Audio Upgrade are Rainbow Audio IQ Line speakers, highly respected and revered, made in Germany, just like your BMW. These are very, very high quality speakers, but are also very efficient, meaning they'll run very well using your stock amplifier.

Do I need to replace my factory amplifier or head unit?

No, you don't. Because we've carefully selected the speakers used in our Stage I Audio Upgrade, they're efficient enough to run off of your stock amplifier and head unit. However, we've designed the Stage I Audio Upgrade with a path for future growth of your system, so if you'd like upgrade your head unit or amplifier down the road, you can.

Will the Stage I Audio Upgrade be visible from within the car or require any permanent modifications?

No, our Stage I Audio Upgrade is completely invisible within the car. Only you and your fellow listeners will know that you've upgraded your stereo since your car will maintain a 100% factory appearance within the vehicle. And, because the Stage I Audio Upgrade requires no permanent modifications to your vehicle, it's completely reversible, meaning you can take your speakers with you if or when you sell your car.

Which speakers are replaced in my BMW?

Your 3 Series / M3 has a 10 speaker system consisting of a 3 way set in the front of the vehicle (tweeter, 2.5" midrange, and 6.25" midbass driver) and a 2 way set in the rear of the vehicle (2.5" midrange and 6.25" midbass driver). If your vehicle has the upgraded Harman Kardon stereo, you'll also find dual 6x9" subwoofers mounted to the underside of your rear deck.

Our Stage 1 Audio Upgrade replaces every interior speaker in the vehicle. The factory subwoofers, if present, will also stay. This setup allows for the simplest installation and biggest improvement in sound quality for the least amount of money.

Will my BMW audio system be louder with the Stage 1 Audio Upgrade?

While the Stage 1 Audio Upgrade provides crisper highs and richer lows as well as significantly more midrange detail, you won't see any benefits in terms of increased volume from your BMW audio system, though you may find yourself listening at lower volumes due to the improved sound quality. This is because your factory amplifier, which is key in determining the upper volume limits of your BMW audio system, is not replaced.

If you're unsure if you'll need more volume from your BMW's audio system after installing the Stage 1 Audio Upgrade, our recommendation is always to purchase the Stage 1 first to improve sound quality, then add an amplifier later if needed. Contact us for more details on amplifier upgrades.

Does the Stage I Audio Upgrade come with a warranty?

Yes, it sure does! The warranty is a 1 year warranty with Rainbow brand speakers. If you ever have any issues, we're just a phone call away. Please note that this warranty does not cover speakers blown due to excessive volumes or abuse.

What part of the Stage 1 is Plug and Play?

The e46 Stage 1 is 100% plug and play for this application

My standard/HK vehicle only has 8 speakers. Where are the other 2?

In the e46 coupe and convertible there is a small cloth grill by the door pull. Behind this grill there is a bracket that houses the midrange/tweeter assembly. It appears there is just one speaker but BMW hid 2 behind there.

Can I get a Stage 1 for standard audio?

Yes you can. The difference between the Harmon Kardon and standard audio systems does not affect the ability to add a Stage 1 speaker package. We have taken the time to asses both the HK vehicles and the standard vehicles to find the best fitment of speakers to work in each vehicle.

You will receive a specially designed Stage 1 based on your vehicles audio system whether it is standard on Harmon Kardon.

Do I have to remove my rear deck to replace the rear speakers?

This will not be required for the installation. In both the coupe and sedan you can easily remove the grills covering the speakers and then remove the speakers. The rear deck does not need to be removed from the vehicle.

Any other questions? Just contact us!