BMW 740iL Speaker Size

Front Door Panel Speaker

Rear Door Panel Speaker

Rear Deck Lid Speaker

BMW 740iL Speaker FAQ

What speakers should I upgrade first in my BMW 740iL for the biggest sound improvement?

Replace the front door speakers first - they handle most of your music's detail and vocal clarity. The 5.25 inch midrange drivers in the front doors are your priority since they reproduce the critical 200Hz to 4kHz frequency range where vocals and instruments live. Consider component speakers over coaxials here. The 1 inch tweeters can wait unless they're blown. Front upgrades typically yield 60-70% of the total sound improvement in the BMW 740iL cabin.

Can I install 6.5 inch speakers in my BMW 740iL front doors?

Stick with 5.25 inch speakers for the front doors on 1999-2001 models. The door panel mounting points are specifically designed for this size. Going larger means custom fabrication and potential clearance issues with window mechanisms. The 6 x 8 inch option only applies to earlier 740iL models from 1993-1998. Your factory amplifier is also tuned for the impedance and power handling of 5.25 inch drivers - typically 4 ohms and 25-40 watts RMS.

Should I choose component or coaxial speakers for my BMW 740iL?

Component speakers offer better soundstage and imaging in the 740iL since you can position tweeters optimally. The separate crossover networks also tend to be higher quality than built-in coaxial crossovers. However, coaxials are simpler to install and work fine if you're not chasing audiophile-level performance. The BMW 740iL's factory tweeter locations are already well-positioned, so components make sense if you're willing to wire the crossovers. Budget around $150-400 for decent components versus $80-200 for quality coaxials.

Do I need to replace the rear deck speakers in my BMW 740iL?

The rear deck 5.25 inch speakers mainly provide fill and ambiance - not critical for sound quality. Focus your budget on front door speakers first. These rear speakers typically run off lower power from the factory amp, maybe 15-25 watts RMS. If you're experiencing rattling or distortion from the rear deck area, then replacement makes sense. Otherwise, upgrading them won't dramatically change your listening experience in the 740iL's front seats.

What size speakers fit in the rear doors of a BMW 740iL?

Depends on your specific year. Most 2000-2001 BMW 740iL models use 5.25 inch speakers in the rear doors, while 1999 models might accommodate 6.5 inch drivers. Earlier 1993-1998 models used the odd 6 x 8 inch oval format. Check your existing speakers before ordering - the mounting depth is usually around 2-2.5 inches. The rear door speakers typically handle 20-35 watts RMS and run at 4 ohm impedance. Component options exist but coaxials are more common for rear positions.