Kenwood KSC-SW11 has a built-in amplifier that is enough to produce powerful bass without having to hook up to an external source. It has a RMS of 75 W and maximum wattage of 150 W.

The Kenwood has a slender structure which makes it easy to fit without worrying about leg room. The all black design gives it an ultramodern look and this helps it fit in with all kinds of setups.

The sub comes with all kinds of personalized controls. You can control the power and the bass easily. You can also blend in the bass notes with the overall sound of the speakers. It also has a remote control feature that lets you have total control over all its functions.

The subwoofer is made of steel and has a rubber surround. The sub enclosure is built with aluminium which makes it sturdy and durable.

Pros:

• It has an amplifier that could handle 150 watts of power and does not need an external source to produce quality sound.
• The slim and sleek makes compact and easy to fit in smaller spaces.
• The sub comes with remote control and lets you have your own personalized settings.

Cons :

• The bass notes are not that powerful when compared to its overall sound quality.

The Kenwood KSC-SW11 is small and lightweight and made with die-cast aluminium. This helps you fit it in the tightest of spaces and lasts longer than a few years. It has a built-in amplifier and provides complete control to the user which is quite extraordinary given its low price.

If you want a low budget subwoofer that produces the best sound quality and fits right under your car seat or in your trunk then the Kenwood sub is the perfect candidate for your car. It has low pricing but comes with an ultra-modern design with its sleek and slender frame.

The Yamaha 100 W subwoofer has the YST II (Yamaha Advanced Active Servo Technology II) that is helpful to bring negative impedance and the constant current flow together so that you get the best sound quality. The bass notes produced as a result are louder and more precise.

The sub flaunts a twisted flare port which helps increase the air circulation inside the sub. If the air circulation inside a sub is of low quality then it can lead to sound distortions or cause noise.

The sub has a stylish exterior design that fits in nicely with its surroundings. The 8 inch speaker is compact to store in your car trunk or in your home.

The powerful sound that it produces is contradictory to its small size. It has a frequency response range of 28 Hz to 200 Hz.

Pros:

• The 8 inch cone woofer produces the best sound.
• It incorporates different designs like the YST II and the twisted flare port makes it stand out than your average subwoofer.
• Low pricing.
• Lightweight

Cons :

• There have been some complaints about the sub lacking different RCA jack input options.

The Yamaha subwoofer packs quite a punch in such a small package. It is powerful and the sub also comes with state of the art technology considering its low budget. Best suited for individuals looking for a low priced sub that is compact and capable of powering up large rooms.

The Rockford Fosgate sub is a great choice when it comes to deep bass notes at a low price. The 12-inch subwoofer has an inbuilt phase switch from 0° to 180°.

The sub has separate low level inputs and speaker inputs for easy use with auto turn on/off feature. It has a thermal protection circuit and an over voltage protection circuit.

The Rockford Fosgate is built with 5 / 8 inch MDF with an in built adjustable EQ boost. It is reinforced with industrial vinyl that makes it sturdy and durable.

With an built in 300 W amplifier, the sub produces powerful sound and you can adjust the bass according to your preference. 

Pros :

• The sub comes with pretty much everything already included. It’s easy to install.
• The closed loop design keeps perfect balance between the subwoofer,the amplifier and the sub enclosure and ensures optimal performance.
• The sub offers some of the best bass notes in the market.
• Affordable and offers a variety of features at such a low price
• The sub enclosure is made of heat activated vinyl that makes it extremely durable.

Cons :

• Weighing at 16 pounds,the sub is quite bulky.
• The product itself is not suitable for harsh handling.

The Rockford Fosgate comes with almost everything inbuilt. If you want a hassle free, easy installation then the sub is ideal. It is also capable of producing loud bass notes and the built in amplifier just gives the added boost.