Powered Subwoofer vs Unpowered – Powered vs Passive Subwoofer Buying Guide
Subwoofers are typical speakers of audio system, for home theater enthusiasts before purchasing new stereo speakers to provide more listening experience. How to choose a subwoofer between powered and passive subwoofers? Powered subwoofer features built-in speaker driver that come with amplifier enclosure, while passive subwoofers include just speakers for connecting to an amplifier. Therefore to make the best target to buy between the both subwoofers, should consider the following.
The power subs is also referred to as active subwoofer, this is all-in-one system that inside self-contained both speaker and amplifier that great matched for optimize performance, and most powered subwoofers are larger than the thicker than unpowered subs but there is more comfortable. But size is no problem for large room in your home such as the home entertainment room – offer easy to use, lowest complex cables and setup. With all these advantages, the buyers should know powered subs are more expensive and less versatile than passive subs.
Example the top five powered subwoofer for home entertainment review such as BIC Acoustech PL-200 is gold award winner and best experience movie theater sound quality with comfortable, Polk Audio PSW505 is a bass reflex designed, an excellent subwoofer that provide great mid-bass sound quality with perform on most popular music and fit for a front-firing woofer, BIC America F12 is a best performance and sound quality for earns to home small subwoofer with great wide frequency response and durable solid build, Premier Acoustic PA-120 home entertainment system delivered to the powerful low end bass response and reproduce huge sound perfectly and MartinLogan Dynamo 300 is a great little subs and designed form high density cabinet construction come with an outstanding efficiency low-distortion 8 inches.
Self Powered Car Subs: Rockford Fosgate P300-12 is perfect for backseat pickup cab setup built-in 300 watts power amplifier with easy install powerful hard rock and great sound. Rockville RW10CA is one of nice slim flat powered/active sealed car subwoofer with bass remote, power handling 200 watts rms, fit to underseat or limited space. The PIONEER TSSWX2502 300Wrms enclosure 10-inch compact subs give tight bass and good low-frequency response. Bazooka BTA850FH is an inexpensive subwoofer with high-efficiency woofer designed and reinforced for use in bass tubes provide maximum bass performance, multi edition from 50 watts to 250 watts – give mid range bass very well.
The unpowered subwoofer or passive subs need to be more powered from external amplifier to reproduce low frequency sounds. The passive subs fits for limit area such as small room or car interior, the objective is to save space for installation. The most passive subwoofer is cheaper than the powered subs, but more expenses for buying external amplifier and must chosen to have the compatibility of the specification, such as wattage, impedance and other appropriate. In addition, there are steps to install a relatively complex than the powered subwoofer such as wiring, connecting and more components – recommended only for professional or expertise to install. All these are negative reasons that affect for buyer’s decision.
Including Bose Acoustimass 6 Subwoofer is great value and quality home entertainment speaker system full range driver compatible with all surround sound receivers. Yamaha NS-SP1800BL is low cost and easy to setup 5.1ch home theater speaker package delivered audio quality with multi-range frequency response and magnetic shielding; provide low-frequency bass sound reproduction with best linear motion features from Advance Yamaha Active Servo Technology (YST) offer highest levels of sound pressure and overall efficiency.
How to Choose a Subwoofer
To be sure the best feeling for more experience of watching movies, listening to music and exciting games. We should consider carefully the selection of speakers. Addition to from the shapes, the specification and the experimental sound of the speaker, there are issues. The quality of the component parts of the speakers that you should know before you lose money, time and experience to take your speakers.
Each brand will be manufactured by the speakers of the sound quality, durability, and a different purpose. So you should know that the speaker manufacturers for each brand are outstanding in any aspect. For example, the Klipsch brand is about the professional audio sound quality is excellent and the higher price. Altec Lansing speakers with a focus on product quality best sound for a home theater or X-mini portable speakers are small and light.
The quality of the power drive
The satellite speakers made of the good quality material, use durable materials and cabinet shielding to prevent interference between the speakers. There should be having adjustable control volume and headphone stereo jack for comfortable use.
The quality of the subwoofer
The subwoofer for best bass reproduction that high energy requires to provides deep and tight bass. Most subs use a high power but it can cause resonance, which is another noise. The materials used to consist of a cabinet subwoofer, the wood should be sound better than plastic. Addition to from the quality of the subwoofer, then you should consider the installation of a subwoofer because the subwoofer is too large, resulting to install more space.
Output Power of speakers
There is usually presented as a set of speakers and sounds that often comes in the form of the power output of the speaker. However, it does not mean that the sound is not clear or distortion. However, the wattage of the speakers are available in two formats that are PMPO (Peak Music Power Output), which is the highest wattage of the speakers at any one time. And RMS (Route Mean Square), which is the average power of the speaker. Typically RMS will be less than PMPO wattage – I recommend you always check that the power to the seller or manufacturer is notified PMPO or RMS.
Speaker cables and connectors
Speakers are an important part of the sound quality of the audio system which the speakers are the price from very cheap to very expensive. The main function of the speaker wire is to pass the signal from a source such as a computer, the player to the amplifier or the speakers. Choosing buy speaker cables to consider the durability and long of cabling. If speaker wire is too long, it may cause clutter and signal attenuation. The best wires should be made of materials that have good electrical signals, which mean that the price is more expensive. In addition, the speaker wire should be insulated to prevent interference
Sound from the speakers
What you should hear is the sound of the speakers – the sound is clear, no distortion, low frequency sound should come from the subwoofer speaker not from Satellite (if the speaker has a subwoofer). And should have a strong voice and the no disagreeing sound and all levels should clearly similar.
Before shopping for speakers, try the experiment should have music in many different styles. More important, if possible, should have a try with a player that we intend to use the speakers. Do not just believe sales or reviews result because each person’s taste in music is not the same.
Wish you have good quality speakers for the price and value in use.
Knowledge of the Speaker and Subwoofer
The main function of the speaker is a device that converts electrical signals to sound signal the human ear to hear. Speakers have a range of sizes from small to several inches. It has a different structure is as follows.
Type of speaker
- Tweeter Speaker is a small unit of the speaker cabinet designed for high frequency audio.
- Midrange speaker is medium sized speaker cabinets are designed to provide a mid range sound. Is not too high or low.
- Woofer speaker is the size of the speaker cabinet designed for low frequencies.
- Subwoofer is a speaker that serves low-frequency sound (bass sound), often with a separate cabinet and built-in amplifier.
- Type of Speakers
Subwoofer is a large speaker that is rather capable of producing sound frequencies below 100 Hz, which small speakers can not be achieved by physical limitations. Subwoofer speakers usually have a minimum of 8 inches or larger and the demand of the power amplifier output power over coaxial speaker type and component speaker.
What affects the performance of the subwoofer speaker?
- Speaker Cabinets: The relationship between with the size and shape of the speaker. At present, with the advancement of technology is not restricted to Speaker cabinet rectangular shape, which will have a variety of shapes. Depending on suitability style and design.
- Power / Energy Management (Power Handling): The manufacturers will have to specify the value of the power and the heat, while the speaker is moving up in the Power Handling. There is a numeric value that represents the ability of the speaker to control it before damaged.
- Xmax: Another factor that affects the performance significantly. Xmax is the Power handling capabilities defined also affect empowerment. And frequency of the sound, and also is one of the numbers must be considered in the Speaker cabinets as well. Xmax is one of a number that the manufacturer is very important. For calculating the volume of the Speaker cabinets and exhaust ducts.
The relationship of the Efficiency with Maximum Output
Maximum Output = 10 log (Power) + Efficiency
For example, if the speakers have a 1000 watts and efficiency value of 90 decibel.
Maximum Output = 10 log (1000) + 90 = (10×3) + 90 = 30 + 90 = 120 dB.
When calculating and so we had to be found, every time the power of the speaker drivers are up to two times, we will have a relationship with the Energy Efficiency and Maximum volume increased 3 dB.
The relationship between Power (watts) and Speaker Efficiency (dB): 12.5W = 11 dB, 25W = 14 dB, 50W = 17 dB, 100W = 20 dB, 200W = 23 dB, 400W = 26 dB
However, the placement of the right angle, environmental conditions in the room and install systems are important factor for the highest efficiency loudspeakers.
Dual Voice Coil vs Single Subwoofer
Credit image from www.bestinexpensivesubwoofer.com
Actually a single voice coil or double voice coil different voice that is just about of a single or two voice coils. There are many reasons for it to be able to organize the voice coil impedance specific of the subwoofer to any individual.
(If the double voice coil subwoofer, each voice coil impedance @4 ohms).
- If desired impedance 8 ohms, by connecting both voice coils in series (4 +4 = 8 ohms).
- If desired impedance 4 ohms, by the use of a single voice coil. (I do not have a voice left).
- If you need this impedance 2 ohms, by the voice coil both parallel (4 / / 4 = 2 ohms). This is to allow each subwoofer can be used with a specific power amplifier’s impedance is different.
Unlike single voice coil subwoofer type, due to the limited impedance just single value.
- If desired impedance 8 ohms, requires 2 subs connected in series.
- If desired impedance 4 ohms, require a subs.
- If desired impedance 2 ohms, require 2 subs connected to parallel (4 // 4 = 2 ohms).
Conclusion: This single voice coil subwoofer is saving money and space than dual voice coil subwoofer. And most important advance of the dual voice coil that the right and to the flexibility impedance of varieties power amplifiers, which results to the highest power.
How Voice Coil Working?
Most speakers on the market classified Electro-dynamic (Electric movement). The fundamental nature of work, it is the reaction of the constant magnetic field changes once.
Generally speakers will include single voice coil wire is wrapped around the cylinder, called the Former. Which was commissioned by the changing magnetic field produces an alternating current output of the power amplifier. This signal represents the flow of the music played by musicians in a recording room. And the voice coil attached to the cone-shaped dome and reaction to the constant magnetic field of the speaker.
Positive terminal to make the cone moves outward and the negative terminal to make the cone moves back inside. When the cone moves as a result of the voice coil results in a change of air pressure in the listening to music room, that is a sound wave.