So, you’re set to upgrade your car sound and start looking for amplifiers online and suddenly you are confused on what class you’re getting. “Class?” Is there such thing? Apparently yes, and to make easy for you to choose the appropriate amp for your setup, we’ll try to explain common amplifier classes as simple as possible.


This is the simplest form of amplifier. When you drive input signal from your source (stereo), the exact amount of output is reproduced therefore there is no clipping or distortion on the output (sound). In many ways, this class of amplifier produces the best sound but due to the transistors being always “on” and current continuously running, this creates extreme heat which is not ideal for car audio.


This class of amplifiers are slightly different. There are two devices that are built-in and conducts alternating current to amplify both sides (half of each) of the wave cycle. This dramatically increases efficiency of theoretically about 80% compared with Class A. The only disadvantage of this is that since the transistors only amplifies half of each side of the waveform, it tends to produce distortion and results in low audio fidelity.


These amps are a combination of both the Class A and B amplifiers. The transistors are continuously flowing current through but utilize a circuitry that reduces the flow of current when there is no signal present. As a result, there is a higher degree of efficiency compared to a Class A, and less distortion as to a Class B. With this system, the Class A/B amplifiers are the most common form of full range car audio amplifiers.

Some of the best brands include:


Among the amplifier classes, Class D is the only “switched” amp commonly used in car audio systems. It is different because unlike Class A, B and A/B; which are analog, Class D operate by quickly switching the current through the transistor on and off. By utilizing this, it creates a pulse-like input signal. Although The Class D amplifiers are indeed more efficient that the three classes, the pulsated signal somewhat creates a small amount of distortion particularly in the higher frequencies. To minimize this, you often use a low-pass filter. Various manufacturers already adapted in using the class D for mono subwoofer amplifiers, but many others are also picking up the benefits of power and size and implementing it on full range speakers as well.

You can checkout the following:

So, now that you are equipped with some basic knowledge of amplifiers, the question now is what class suits your taste. The basic rule of thumb is that Class A/B amplifiers are best for full range and mostly component speakers, while Class D amps are better suited for subwoofer drivers. You can experiment with different brands and classes to really find the sound you are looking for but with this basic template, you’ll be on the right track.

All products mentioned in this blog are available at with excellent and competitive prices on our special offers. Just click on the links and and happy shopping.


The year 2016 is about to end and we at Onlinecarstereo would like to thank our valued customers who supported us throughout the year. We have reviewed our database and picked out the best subwoofers for this year. Enjoy!

#5 Kicker 10CVX122 – You can’t go wrong with the 10CVX122. It handles a continuous power of 750 Watts (RMS). With the perfect amplifier, this thing will rock. It sports a 12 inch diameter and one-piece SoloKon™ cone with Santoprene rubber surround so you know it’s made from high quality materials that produce clean outputs and deep bass. The 10CVX122 has a dual oversized 2 0hm voice coils so you’ll have lots of wiring flexibility while you keep upgrading your car audio system as you go along. To more details, click here. JL Audio 10W1V3-4 – The 10W1V3-4 is a 10 inch, 4 ohm subwoofer that pack a maximum power of 600 Watts so you know it’s going to be loud but can best be appreciated at 75 – 300 Watts. This particular subwoofer is great for car gear head newbies who are just starting to get in the realm of car audio. It’s affordable and it’s powerful. With a 20 – 250 Hz, you can be sure you can hear the most highs and lows of your music desires. Not to mention that it’s a “JL Audio” brand. You can’t check out the full specs here.
#3 JL Audio 10W3V3-4 – Another entry for JL Audio is its twin brother, the 10W3v3-4. With the same 10 inch diameter, this little monster packs a 1000 Watts peak power which balances it with great sound quality perfect for any car. This subwoofers sweet spot is between 250 – 500 Watts and when we say “sweet”, you’ll know when you install this beast; you’ll be pounding that bass to your hearts delight. View the full specifications here. JL Audio 12W3V3-4 – Once again, JL Audio is proving their king of the subs. At second place, is the former’s big brother, the 12W3v3-4. Standing at 12 inch in diameter, this powerhouse can produce a maximum 1000 Watts of power so you get what you pay for. At an optimum setting of 100 – 500 Watts, you can be sure you produce clean, vibrant and excellent sound output with deep bass. In addition, with the EFC (Elevated Frame Cooling) technology that has been adapted to the design of this subwoofer, cold air circulates directly to the voice coils that decreases sound distortion throughout its sound range. The 12W3V3-2 will definitely exceed your expectations for your subwoofer upgrade. View the detailed specs here.

#1 Infinity BASSLINK – Our top pick for 2016 best subwoofer is the 10 inch, enclosed power subwoofer from Infinity, the Basslink. Its enclosure materials are made of high quality polymer and woofer with treated paper. It also features a class D 200 Watt amplifier perfect for car audio geeks. It’s a one-stop-shop subwoofer and very easy to install. Even though it’s small, this baby can produce clear, clean and powerful sound that surely can be reached by your budget. It truly achieves the best of both worlds. Find out more about the Infinity Basslink here. has tons of car audio products suited to your specifications with affordable prices and excellent aftermarket service. Each product is quality inspected and offers competitive warranty services for your investments. Checkout our various deals and take advantage of the Christmas Holiday rush promos.


Most of us humans just listen to music coming out of a speaker but audiophiles, sound geeks and car guys on the hand, use a lot of terms and jargons to identify the quality of sound from each brand of speaker they encounter. These terminologies are used to describe sound qualities in numerical values. Here are some of the common word and their definitions:

PEAK POWER – One of the most common terms you will encounter when searching or reading about speakers / subwoofers / tweeters. This is also called Max Power or Dynamic Power Rating which is the maximum amount of power that a speaker can handle without damaging or breaking the device. With the correct amplifier power, you can reach this rating through a loud hit of a bass or high note of a song. In a way, this value is an exaggeration of the power that a speaker can give until it starts to break.

RMS POWER – Or Root Mean Square is measured by the continuous power an amplifier is outputting or in this case, a speaker can handle. Most speaker manufacturers compute the RMS differently which is why it is also very difficult to compare RMS’s of various brands. However, there are also companies who are CEA certified. This means that products are tested with the same methods, therefore can be compared equally to one another to know which products are better.

IMPEDANCE – One the most mystical terms in the speaker world. Lack of knowledge of this can commonly lead to a blown speaker. Impedance is measured using the unit Ohm which is basically a physical characteristic of a speaker to restrict the flow of electrical current through it. This is important to know because connecting an amplifier to a speaker with the wrong impedance can lead to damaged amps. On the other hand, connecting it to a speaker with the correct or matching impedance will deliver maximum power and performance.

FREQUENCY RESPONSE – is a numerical value describing the audible frequency range that a speaker can reproduce. It is measured in Hertz and in theory, humans can generally hear 20 Hz which is the very low bass notes, and 20,000 Hz which are the highest treble notes. In addition, the frequency response is often accompanied by an amplitude value measured in dB (decibel). In general, FR is used to determine how high a treble, and how low a bass a speaker can hit.

SENSITIVITY – Also a common term when shopping for speakers, this is a measure of a loud speaker’s sound pressure for every 1 Watt of power at 1-meter distance from it and is measured in Decibels (dB). This value can be useful in determining how loud a speaker can sound and the amount of power to amplify it. For instance, a speaker with a sensitivity of 96dB means the sound pressure level (SPL) of a speaker is 96dB after applying 1 Watt of power at 1-meter distance. Therefore, generally speaking, a speaker with a low sensitivity will require more power to amplify sound and vice-versa.

DESIGN – Speaker design is described as having the number of speakers in an audio system with separate frequencies. A 2-way design means it has two speakers with 2 separate frequencies – the lows and highs. On the other hand, a 3-way design means it has 3 speakers with separate frequencies of low, midrange and high.

DRIVER – This is basically the cone or individual transducer of a speaker that moves back-and-forth produced by electrical signals and eventually sound waves.

TWEETER – Also a very common term and sometimes confusing, is a specialized speaker that produces very high frequencies, usually 2,000 to 20,000 Hz that is normally considered in the upper limit of human hearing. It is usually small and a dome or horn-type shape.

SUBWOOFER – Is a loudspeaker designed and dedicated to producing very low-frequency sounds known as “bass” which ranges from 20 to 200 Hz.

With the basic knowledge of these speaker terms, you are able to more or less identify a better speaker for your needs. If all else fails, you can inquire an expert at your local dealer store. have specialists that can guide you on what speaker is best for you. Their website also has various brands to choose from complete with all the details and specifications for you to compare at competitive prices. Do check out their latest promos on speakers and other audio system equipment.

Car Audiophiles Holiday Shopping Tips

This holiday season, a lot of people are rushing to the malls hoping to find the perfect deal for their car audio upgrade. Most of us are blown away by the massive advertisements companies show and we easily get enticed by the big discounts and huge markdowns. Unfortunately, most of us do not really know the products we are going to buy. We just purchase them because they're on sale without thinking about its necessity.

 Luckily, there are now other ways to shop but knowing what and where to look for that dream upgrade will make your shopping experience more satisfying with an added bragging rights to your friends.

 Here are some tips to find the perfect deal for your car upgrade.
KNOW WHAT YOU WANT AND NEED - We always fall into this trap when seeing something with a big discount. We immediately swipe our credit cards only in the end of the day, we feel dissatisfied of our purchase. Assess what you want and evaluate the different options such as brands, specs and features. Research on which brands and companies give the best aftermarket service and warranties. Read a lot of customer reviews and forums on products that you like to get an idea of the PRO's and CON's of the stereos, speakers, woofers etc. that you like. Onlinecarstereo offers a lot of brands to choose from with the best prices and warranty policy.
SET A BUDGET AND STICK TO IT - Another trap that car audiophiles usually fall into. After a thorough review of what you want (and need), try to set a budget on what you can and comfortable to pay. If you did your homework, chances are you'll easily identify the upgrades you really want and will have a ball park figure of what you'll spend. This way, you do not end up breaking the bank. More importantly, save big before the big day so that you'll have lots of spare change to spend. Another option to this is to have a reliable financing solution that allows you to purchase in small amounts in multiple payments that is compatible with your monthly paycheck. Onlinecarstereo also provide financing options for your audio system upgrades. Check out their website for more details.
WATCH OUT FOR COUPONS AND PROMO CODES - The essence of wise shopping is getting as much discounts as you can. Checkout retailer websites for coupon and promo codes to get the best deals. These codes provide more markdowns to already discounted products which is what shopping is all about. For instance, you can save 50% on Dynamat sound solutions using promo code: MAT50 and 10% off on selected JL Audio woofers and woofer enclosures
READ ABOUT THE WARRANTY AND RETURN POLICY - We often take this for granted but this can be useful in the long run. When your stereo or speaker needs repair or has issues, it is always useful to know the warranty coverage or return policy. Onlinecarstereo offers lifetime tech support, 60 day money back guarantee, and an excellent warranty policy. Read here for more details.
If going to large crowds and long lines isn't your thing, worry no more. The advent of ecommerce has changed the way people shop. No more lines and driving long distances to buy your goods. You'll get the perfect deals right in the comfort of your own home with just your computer. Watch out for Black Friday and Cyber Monday Deals during the holiday season. Onlinecarstereo has a number of 2016 holiday deals in store. It provides customers all the necessary product details and actual photos for appreciation and information. For purchases over $49, UPS ground shipping is free. Remember, shopping is not just about spending money, it’s about getting your money's worth and enjoying your newly upgraded car audio system. Having the right information can save you big bucks and peace of mind.


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