Bavsound Stage 1 Speaker Package - G32 6 Series with S676A Hi-Fi
Bavsound took your factory BMW speakers and re-engineered their upgrade for one thing: clarity. So you can simply swap your original speakers for Bavsound's without changing anything else in your audio system, and the result is smooth, natural, yet unbelievably detailed reproduction of your favourite music.
WHAT'S INCLUDED? ABSOLUTELY EVERYTHING YOU NEED FOR INCREDIBLE SOUND
This Bavsound Stage 1 Speaker Package upgrades the factory Hi-Fi audio system in your BMW G32 6 Series, bringing clearer vocals and more detail to your music.
CENTRE CHANNEL TWEETER
(1x) BAVSOUND 25mm Silk Tweeter
CENTRE CHANNEL
(1x) BAVSOUND 100mm 3-Leg Midrange
FRONT DOOR TWEETERS
(2x) BAVSOUND 25mm Silk Tweeter
FRONT DOOR MIDRANGES
(2x) BAVSOUND 100mm Offset Mount 3-Leg Midrange
REAR DOOR TWEETERS
(2x) BAVSOUND 25mm Silk Tweeter
REAR DOOR MIDRANGES
(2x) BAVSOUND 100mm Offset Mount 3-Leg Midrange
Suitable for BMW G32 6 Series models equipped with the factory S676A Hi-Fi sound system.
HOW TO DETERMINE WHICH AUDIO SYSTEM YOUR BMW HAS
BMW offered several factory audio systems, and the correct Bavsound Stage 1 speaker package depends on your vehicle’s model, body style and original audio specification.
The most reliable starting point is your 17-digit Vehicle Identification Number (VIN). Check your vehicle’s factory equipment list using an online VIN decoder such as Bimmer.work or MDecoder, or contact your BMW dealer to confirm which audio system was fitted from the factory.
BASE STEREO SOUND SYSTEM
BMW’s entry-level audio system generally uses the head unit to power the speakers, without a separate factory amplifier. Separate tweeters may not be fitted, depending on the model.
There is generally no dedicated premium audio option code. Business Radio codes such as 645 or 661 may appear, but should be considered alongside the complete equipment list.
HI-FI SOUND SYSTEM - S676A
The Hi-Fi system adds a separate factory amplifier and a different speaker configuration from Base Stereo. Speaker quantities and locations vary between models, and the speaker grilles generally do not carry Harman Kardon branding.
Look for 676 / S676A — Hi-Fi Speaker System in the factory equipment list.
HARMAN KARDON SOUND SYSTEM - S674A/S688A
Harman Kardon systems commonly have branded speaker grilles and use a dedicated factory amplifier. BMW used different Harman Kardon configurations across its model range, so these systems do not all share the same speakers, amplifier or connections.
Look for 674 / S674A or 688 / S688A. Badges are a useful clue, but should not replace checking the VIN, particularly if the interior or audio system has been modified.
TOP HI-FI / LOGIC7 / PROFESSIONAL DSP - S677A
BMW marketed this premium system under names including Logic7, Top Hi-Fi and Hi-Fi System Professional DSP, depending on the vehicle and year. It uses a separate amplifier with digital sound processing.
Look for 677 / S677A. Available equaliser and surround-sound settings vary between models.
Found on selected BMW models, particularly M vehicles, this system uses different speakers and amplification from the standard Hi-Fi and other premium systems.
Look for 752 / S752A. Names and identifying trim details vary by model, so confirm the equipment code rather than relying on appearance alone.
NEED HELP CONFIRMING YOUR SYSTEM?
Match your vehicle and factory audio system to the compatibility information shown in this listing. Kits for different audio systems are not necessarily interchangeable, even when the speakers look similar.
If you are unsure, send SouthernBM your VIN before ordering. Let us know about any aftermarket amplifier, replacement head unit or previous speaker modifications, as the factory equipment list will not show these changes.
Your VIN is required when ordering so we can check that the selected Bavsound Stage 1 package suits your vehicle.
Product Information
WHY BAVSOUND? BECAUSE BMW AUDIO UPGRADES SHOULD BE EASY AND WITH BAVSOUND, THEY ARE
GET UNBELIEVABLE, CRYSTAL CLEAR SOUND. JUST BY REPLACING YOUR BMW'S SPEAKERS
Bavsound took your factory BMW speakers and re-engineered their upgrades for one thing: clarity. So you can simply swap your original speakers for Bavsound’s without changing anything else in your audio system, and the result is smooth, natural, yet unbelievably detailed reproduction of your favourite music.
PLAY YOUR MUSIC LOUDER, AND ENJOY EVERY NOTE
Bavsound engineered the Stage 1 speakers to produce higher-quality sound: a wider range and more balanced reproduction of the bass and treble you are currently missing. That’s because Bavsound uses proven audio technology: woven fibreglass cones, butyl rubber surrounds and silk composite tweeters. Working together, these technologies help reduce distortion at higher volumes for accurate, natural, beautiful sound — even as you turn up the music.
DESIGNED TO FIT AND OPERATE JUST LIKE YOUR FACTORY SPEAKERS, ONLY BETTER
Bavsound engineers their speakers with the same unique size, shape, connectors, impedance, and efficiency as your factory speakers. That means installation is as simple as unbolting your factory speakers and bolting the Bavsound speakers in, and it's totally reversible, too. No one will ever know you've upgraded your audio system except you. Unless, of course, they hear it.
INCLUDES EVERYTHING YOU NEED FOR CRYSTAL CLEAR SOUND, EXCEPT TOOLS
The Stage 1 Speaker Package replaces every speaker* in your BMW (except subs), and includes everything you need except basic tools, available separately. Refer to What’s Included for the exact speaker quantities and locations upgraded.
100% PLUG & PLAY INSTALLATION
Simply unbolt, unplug, and remove your factory speakers and plug Bavsound's in. It's that simple. Really. (NOTE: 1996-1999 BMW 3 SERIES / M3 excluded).
SO SIMPLE, YOU CAN DO IT YOURSELF
Ever put together IKEA furniture? Then you can install a Bavsound Stage 1 Speaker Package. Each kit includes step-by-step instructions, and is designed to be easy enough that anyone can install it in just a few hours.
4 YEAR WARRANTY
Everything Bavsound sells has been engineered for durability and longevity, knowing they will last. And last. And last. That's why Bavsound's upgrades are backed with an industry-leading four-year limited warranty. So if something breaks, send it back. We'll replace it at no charge*.
INSTALLATION MADE SIMPLE — DO IT YOURSELF
Bavsound designs all Stage 1 speaker upgrades with the DIY owner in mind. With suitable tools, step-by-step guidance and a little time, you can work through the installation one speaker at a time and enjoy the satisfaction of upgrading your BMW’s sound yourself.
For most applications, the process involves accessing the original speakers, disconnecting and removing them, then fitting the Bavsound replacements in the factory locations. There’s no need to design a custom audio system or replace your factory amplifier and head unit.
Review the instructions before starting, prepare the required tools and take your time when handling interior trim. Installation time and mounting requirements vary between vehicles, and some applications involve additional steps. Tools are supplied separately.
Visit the Bavsound Installation Guides and select your vehicle’s year, model, body style and factory audio system to find the available instructions and videos for your package.
Have questions about the kit or installation? Contact us and we’ll be happy to help. If you’d prefer us to take care of the installation, we also offer professional fitting at our Moorabbin workshop in Melbourne.
FREQUENTLY ASKED QUESTIONS
Find answers to common questions about the Bavsound Stage 1 Speaker Upgrade, including DIY installation, sound quality, compatibility with your factory audio system and warranty coverage. If you need help choosing the right package for your BMW, contact us and we’ll be happy to assist.
Can I install the Stage 1 Speaker Package myself?
If you can put together IKEA furniture, you can install the Stage 1 in your BMW — and here's why.
The Stage 1 is designed from the ground up to be easy to install. Installation doesn’t involve complex wiring or modifications to your BMW. Just unbolt the factory speakers, install the Bavsound replacements, plug in the factory connections, and play! Some older E36 applications require slightly more work, such as a dab of glue here and there, but the steps remain straightforward.
Every Stage 1 comes with detailed installation instructions with photos, a step-by-step installation video, or both, so you’ll know exactly what to do.
I’m still not sure. Who can install my Stage 1 for me? Can you recommend an installer?
The great news is that Bavsound's products are incredibly easy to install, meaning virtually any place that works on cars can perform the installation. You could take the car to your local mechanic, the BMW dealer, or even any well-regarded local car audio shop — it’s your choice. If you’re in Melbourne, we also offer professional installation at our Moorabbin workshop.
Does the Stage 1 really enhance sound quality? What if I have a standard audio system? What about the premium audio system (Harman Kardon, Logic7, DIRAC, etc.)?
Yes, the Stage 1 really does work and make a dramatic difference in overall sound quality, clarity, and performance, regardless of the type of audio system your BMW was equipped with from the factory (even your “premium” system).
How is that possible? Well, every audio system in every BMW makes compromises to reduce manufacturing costs, even the premium audio systems. When Bavsound develops each Stage 1 Speaker Package, they first perform an analysis of the factory audio system in which the kit is being installed, and optimise it to help overcome the issues of the factory audio system, whether that's lack of midrange detail, harsh tweeters, poor imaging, or anything else.
So no matter which audio system you have in your BMW, the Stage 1 yields incredible results.
How does the Stage 1 improve sound quality?
Simply put, by using higher-quality materials and better engineering, Bavsound is able to achieve a much more accurate, and more importantly, enjoyable listening experience for you and your passengers.
All speakers have a variety of characteristics which determine their ability to reproduce recorded music faithfully and accurately: magnet design and materials, voice coil design, suspension, surround material, cone material, and so on.
Vehicle manufacturers make compromises in many of these areas in order to keep costs down.
The end result is often a poorly designed speaker made with sub-par materials (cheap paper cones, plastic tweeters, etc.) that hits the price target they’ve set... and also sound terrible.
The result, sonically, is generally distortion or poor frequency response and transient response. Translation? Muffled, muddy, sloppy, and harsh reproduction of your favourite tunes.
Bavsound makes no compromises with their product design or the materials used because they don’t have to, so you get great sound without having to change any other components of your vehicle's audio system.
But not only that; every speaker is engineered for the exact BMW in which it’s installed, right down to the smallest details. Rather than building your speakers for a specific price point, Bavsound has built them to sound great in your exact car and audio system configuration.
No other company can say the same thing.
Does the Stage 1 Audio Upgrade improve bass response?
Yes and no. Because Bavsound's speakers are so much higher quality than the factory components and because they are better designed, they’ll play more loudly without distortion than factory speakers. In most cases you're working with 100mm midrange drivers, which can only move so much air. However, due to the lower levels of distortion, and with Bavsound's speakers being slightly less efficient than the factory speakers, the factory woofers will skew slightly higher in terms of output throughout normal listening levels. This means you can enjoy higher listening volumes, or alternatively, slightly higher bass settings on your radio.
However, none of the Stage 1 kits replace factory subwoofers, and they do not increase the amount of overall bass that is produced (despite the perceived improvement due to the factory speakers no longer distorting). If you really want a serious improvement in bass response and overall sub-bass performance, you’ll need one of the Bavsound Ghost Subwoofer Systems.
What type of speakers are included in the Stage 1 Speaker Package? How do the Bavsound speakers compare to "big name" brands like JBL or Infiniti?
Every Stage 1 is 100% BAVSOUND exclusive, and uses their proprietary, vehicle-specific speakers. They’re designed for your exact model and application, and available exclusively through BAVSOUND.
Making a comparison between the speakers that make up Bavsound's Stage 1 kits to off-the-shelf speaker pairs is like comparing apples to oranges.
First and foremost, off-the-shelf parts just plain don't fit in most cases without modifying the vehicle or the speakers. Bavsound's speakers are always a direct fit in your BMW, with no modifications to your BMW required. Ever.
Second, aftermarket speakers are designed to be used with an aftermarket amp, and have "standard" impedance profiles and efficiency. If you're planning to use them with your factory amplifier, odds are they won't sound very good. That's because BMW, in most cases, uses non-standard impedances and very high efficiency speakers. When installing aftermarket speakers with your factory amp, generally they won't present the correct impedance to the amplifier, leading to imbalanced output (some frequencies too loud, others too quiet), not to mention possible damage to your factory amplifier.
Bavsound speakers are always correctly impedance and efficiency matched to work in perfect harmony with the rest of the factory audio system, ensuring the continued excellent performance of your factory amplifier and/or head unit.
All of that said, when comparing the actual speaker design and how the Bavsound speakers sound in real world use compared to many, many aftermarket brands, they are, quite simply, exceptional when compared to most aftermarket speakers offered at similar price points. The reason is simple: Bavsound is able to use better materials and speaker designs at the same price point because they don't sell through traditional retail channels with 4-5 middlemen. Instead Bavsound buys from the factory and sells to you, and that means more speaker for your money.
So in the end, there really isn't a comparison.
What are the specs for the speakers used in the Stage 1?
Bavsound does things a bit differently than a typical speaker company. In the context of what they do — direct speaker replacements for BMWs — the typical specifications are highly irrelevant to the end user. They ARE relevant during the engineering phase, however.
Take wattage, for example: A typical one-size-fits-all speaker company provides this information either to sound as "powerful" as possible or in order to allow a customer to choose an aftermarket amp to match the RMS of these speakers. This might be 50 watts RMS, 120 watts peak, for example, which means that the speaker can HANDLE a constant load of 50 watts, with higher peaks. It says nothing about the level of output or any other aspect of speaker performance.
What Bavsound does is very different. They design speakers to work off a factory amplifier that has a set wattage and impedance for each channel, and those values are very different from generic aftermarket values. For example, the factory amp may be putting out (in a Harman/Kardon E46 configuration):
32 watts @ 2.6 ohms - Midbass
24 watts @ 8 ohms - Midrange
12 watts @ 6 ohms - Tweeter
These values are all over the place. Furthermore, they vary between the "Standard" and "Premium" versions of the audio system, and they don't really tell the whole story, as we haven't even talked about the all-important efficiency values which would need to match the factory speakers - or the actual quality of sound reproduction.
Long story short, Bavsound decodes this mess of information in the engineering phase, uses that data to make the best sounding speakers for the exact system in your exact BMW, and then shelves it — as it will only lead to confusion. Why? The general public typically wouldn't see "12 watts @ 6 ohms" as a good thing, even though it's the best sounding option for their car aside from fully custom systems in the $5,000 - $10,000 range.
Finally, regarding frequency range data for each speaker, again, this doesn't tell us much as the speakers work with the factory amplifier’s crossover settings — but typically, all said and done, you'll be hearing as much of the spectrum as humanly possible given the limitations of the factory system's configuration: about 50Hz - 20,000Hz.
Do I need to replace my factory amplifier or head unit to install the Stage 1?
No, you don't. Because Bavsound has carefully selected the speakers used in the Stage 1 Speaker Package, they're optimised to sound great with your factory amplifier.
Even though many customers approach Bavsound with the idea that they would like an amplifier upgrade, the vast majority of those who install the Stage 1 are incredibly happy with the upgrade, and never think about an amp upgrade after it's installed.
But don’t I NEED to upgrade my amp to get great sound?
We get this, well, a lot. Again, no, you don’t.
The question to ask yourself is why you want an amplifier upgrade. Most customers think they want an amp upgrade for their interior speakers because they want more punch. In other words, they are looking for the overall sound to have more weight and power.
In reality, while an amplifier upgrade for your interior speakers will help to deliver that, a subwoofer system in general does much more to enhance the perceived "impact" of the audio system AND perceived volume. It also relieves the interior speakers of some of the burden of bass response, allowing them to play more loudly distortion free.
How does this work? Well, many don't realise that the vast majority of sonic energy in recorded music is in the lower frequencies (i.e. bass), and a subwoofer system that can accurately and powerfully reproduce those frequencies gives music its heft and impact when played back. Upgrading the amp for the interior speakers helps in this regard, but interior speakers just aren't optimised to produce bass, and ultimately won't get you there — but a sub system will.
So, if the Stage 1 isn't enough for you in terms of overall volume output, we recommend a compatible Bavsound Ghost Subwoofer Set.
Will the Stage 1 be visible from within the car or require any permanent modifications?
No, the Stage 1 Speaker Package is completely invisible within the car and totally reversible after installation.* 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.
*Some exceptions do apply, though this is rare.
Will my BMW audio system be louder with the Stage 1 installed?
Yes and no. While the Stage 1 provides lush, detailed highs, more defined lows, and significantly more midrange detail, your factory BMW audio system's output is limited by your amplifier, which isn't changed with the Stage 1.
However, the speakers included in the Stage 1 are capable of playing at higher volumes distortion free, meaning the usable volume limits of the system are indeed higher. Practically speaking, this means your BMW’s audio system will indeed play more loudly!
Does the Stage 1 Speaker Package come with a warranty?
Yes, and it’s one of the best in the business because Bavsound has engineered and built their speakers to last. You’re covered for 4 years from the date of your purchase. If you ever have any issues, we're just a phone call away. Some limitations apply.
Models
6 Series
G32 (2017+):
All models
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