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Technical Pro BOM-12 Professional 12" Speaker Technical Pro BOM-15 Professional 15" Speaker Technical Pro BOM-215 Professional Dual 15" Speaker
List Price: $299.98
Our Price: $239.98
Sale Price: $99.99
List Price: $449.98
Our Price: $359.98
Sale Price: $119.99
List Price: $724.98
Our Price: $579.98
Sale Price: $199.99
Technical Pro - BOM-12 - 800 Watt Speaker Technical Pro - BOM-15 - 1000 Watt Speaker Technical Pro - BOM-215 - 1500 Watt Speaker
Premium construction quality along with features and performance technology previously unheard of at this price level. Premium construction quality along with features and performance technology previously unheard of at this price level. Premium construction quality along with features and performance technology previously unheard of at this price level.
Gem Sound - TR-100 Speaker 350 Watts 10" 3-Way Gem Sound - TR-120 Speaker 450 Watts 12" 3-Way Gem Sound - TR-150 Speaker 600 Watts 15" 3-Way
List Price: $199.98
Our Price: $159.98
Sale Price: $69.99
List Price: $299.98
Our Price: $239.98
Sale Price: $99.99
List Price: $449.98
Our Price: $359.98
Sale Price: $119.99
TR-100 Speaker 150 Watts 3-Way TR-120 Speaker 450 Watts 3-Way Gem Sound - TR-150 Speaker 600 Watts 3-Way
10" woofer, Horn & Tweeter Awesome for Mobile DJ or Karaoke - 12" woofer, Horn & Four Tweeters Awesome for Mobile DJ, Karaoke or a Club - 15" woofer, Horn & Five Tweeters
Gem Sound - TR-300 - Speaker 1000 Watts 3-Way w/ dual 15" wooofers EAP-12D High-Definition Professional Speaker - 500 Watts Peak Power! EAP-15D High-Definition Professional Speaker - 700 Watts Peak Power!
List Price: $724.98
Our Price: $579.98
Sale Price: $199.99
List Price: $349.98
Our Price: $279.98
Sale Price: $98.99
List Price: $499.98
Our Price: $399.98
Sale Price: $128.99
Gem Sound - TR-300 Speaker 1000 Watts 3-Way EAP EAP-12D EAP EAP-15D
Awsome for Mobile DJ, Karaoke or a Club - Dual 15" woofer, Horn & Four Tweeters
1000 Watts 		Ultimate high-output loudspeaker - 12" woofer & Horn 500 Watts Peak Power!
A must-have addition for the band or DJ who likes to shake the room! 		Ultimate high-output loudspeaker - 15" woofer & Horn 700 Watts Peak Power!
A must-have addition for the band or DJ who likes to shake the room!
EAP-215D High-Definition Professional Speaker - 1400 Watts Peak Power! Gemini GSM-1580 - 15" 3-way speaker Gemini GSM-3200 - Dual 15" 3-way speaker
List Price: $749.98
Our Price: $599.98
Sale Price: $248.99
List Price: $399.98
Our Price: $319.98
Sale Price: $129.99
List Price: $749.98
Our Price: $599.98
Sale Price: $239.99
EAP EAP-215D Gemini GSM-1580 Gemini GSM-3200
Ultimate high-output loudspeaker - Dual 15" woofer & Horn 1400 Watts Peak Power!
A must-have addition for the band or DJ who likes to shake the room! 		Awsome for Mobile DJ, Karaoke or Parties - 15" woofer, horn & four tweeters Awsome for Mobile DJ, Karaoke, Clubs or Parties - Dual 15" woofers, horn & four tweeters
Gemini XTR-500SYS - Powered Speaker System - 800 Watts Gem Sound - MAP1000 Portable Powered 2-way PA System Behringer EUROLIVE PROFESSIONAL B1520 PRO 2-Way 15" Speaker
List Price: $1,374.98
Our Price: $1,099.98
Sale Price: $499.99
List Price: $474.98
Our Price: $379.98
Sale Price: $189.99
List Price: $624.98
Our Price: $499.98
Sale Price: $249.99
Gemini XTR-500sys Gem Sound - MAP1000 Portable PA System EUROLIVE PROFESSIONAL B1520 PRO
15" Subwoofer, Two 10" satellite speakers, built in 800 watt amplifier.
Complete with stands, wheels and speaker cables. 		Built in 200 watt amplifier and a mixer (2 mics, 2 line). Full-range sound with chest-thumping lows and sparkling highs.
Behringer EUROLIVE B212 Speaker 12" 2-way Behringer EUROLIVE B212A Powered Speaker 12" 2-way Behringer EUROLIVE B215 Speaker 15" 2-way
List Price: $374.98
Our Price: $299.98
Sale Price: $149.99
List Price: $574.98
Our Price: $459.98
Sale Price: $229.99
List Price: $499.98
Our Price: $399.98
Sale Price: $199.99
EUROLIVE B212 EUROLIVE B212A EUROLIVE B215
Full-range sound, easy price, and just 23 lbs! A loudspeaker with integrated power amp, inputs, level, and EQ controls. Big-time sound that's extremely affordable!
Behringer EUROLIVE B215A Powered Speaker 15" 2-way Behringer EUROLIVE P1220F Floor Monitor 12" 2-way Behringer EUROLIVE S1220F 12" Floor Monitor
List Price: $699.98
Our Price: $559.98
Sale Price: $299.99
List Price: $274.98
Our Price: $219.98
Sale Price: $109.99
List Price: $199.98
Our Price: $159.98
Sale Price: $79.99
EUROLIVE B215A EUROLIVE P1220F EUROLIVE S1220F
An affordable powered PA speaker with input level and EQ controls. EUROLIVE P1220F EUROLIVE S1220F
American Audio - PXI 10P - Powered Speaker American Audio - PXI 12P - Powered Speaker American Audio - PXI 15P - Powered Speaker
List Price: $624.98
Our Price: $499.98
Sale Price: $249.99
List Price: $749.98
Our Price: $599.98
Sale Price: $299.99
List Price: $999.98
Our Price: $799.98
Sale Price: $399.99
American Audio - PXI 10P - Powered Speaker American Audio - PXI 12P - Powered Speaker American Audio - PXI 15P - Powered Speaker
High-Powered 10-inch, 2-way speaker with a built-in 200w high-powered bi-amp amplilifier. High-Powered 12-inch, 2-way speaker with a built-in 300w high-powered bi-amp amplilifier. High-Powered 15-inch, 2-way speaker with a built-in 400w high-powered bi-amp amplilifier.
American Audio - DLS-15P - Powered Speaker TWO Vocopro PV-802 8" 400W Powered Vocal Speakers Technical Pro SUB-18X Subwoofer w/Crossover
List Price: $699.98
Our Price: $559.98
Sale Price: $279.99
List Price: $724.98
Our Price: $579.98
Sale Price: $289.99
List Price: $699.98
Our Price: $559.98
Sale Price: $279.99
American Audio - DLS-15P - Powered Speaker TWO PV-802 8 Technical Pro SUB-18X Subwoofer
This unit can serves as a self-contained PA system. Vocopro PV-802 8" 400W Powered Vocal Speakers - Sold in Pairs Designed specifically for club and high-end pro audio users.
VOCOPRO Sub-1200 12" Powered Subwoofer VOCOPRO SUB-1500 15" Powered Subwoofer Behringer EUROLIVE PROFESSIONAL B1800X PRO Subwoofer
List Price: $624.98
Our Price: $499.98
Sale Price: $228.99
List Price: $849.98
Our Price: $679.98
Sale Price: $328.99
List Price: $874.98
Our Price: $699.98
Sale Price: $349.99
VOCOPRO Sub-1200 12 VOCOPRO SUB-1500 15 EUROLIVE PROFESSIONAL B1800X PRO
120 Watts of booming bottom-end bass sound!
FEEL THE MUSIC ... FEEL THE B-O-O-M! 		FEEL THE MUSIC ... FEEL THE B-O-O-M! When it comes to massive bottom end, the B1800X is the bomb!
   
 
Find a fantastic selection of night club sound systems, quality disc jockey equipment, affordable PA speakers, professional DJ equipment, powerful club speakers and DJ systems. Whether you are looking for powerful speakers, a club worthy sound system, a quality PA speaker system, DJ speakers, a pro DJ system, or for superior DJ gear - we offer everything you want. High quality mobile dj speakers are now on sale. Think of us the next time you need a dj speaker.

In any sound system, ultimate quality depends on the speakers. The best recording, encoded on the most advanced storage device and played by a top-of-the-line deck and amplifier, will sound awful if the system is hooked up to poor speakers. A system's speaker is the component that takes the electronic signal stored on things like CDs, tapes and DVDs and turns it back into actual sound that we can hear. In this article, we'll find out exactly how speakers do this. We'll also look at how speaker designs differ, and see how these differences affect sound quality. Speakers are amazing pieces of technology that have had a profound impact on our culture. But at their heart, they are remarkably simple devices.

Sound Basics
To understand how speakers work, you first need to understand how sound works.
Inside your ear is a very thin piece of skin called the eardrum. When your eardrum vibrates, your brain interprets the vibrations as sound -- that's how you hear. Rapid changes in air pressure are the most common thing to vibrate your eardrum.

An object produces sound when it vibrates in air (sound can also travel through liquids and solids, but air is the transmission medium when we listen to speakers). When something vibrates, it moves the air particles around it. Those air particles in turn move the air particles around them, carrying the pulse of the vibration through the air as a traveling disturbance.

To see how this works, let's look at a simple vibrating object -- a bell. When you ring a bell, the metal vibrates -- flexes in and out -- rapidly. When it flexes out on one side, it pushes out on the surrounding air particles on that side. These air particles then collide with the particles in front of them, which collide with the particles in front of them and so on. When the bell flexes away, it pulls in on these surrounding air particles, creating a drop in pressure that pulls in on more surrounding air particles, which creates another drop in pressure that pulls in particles that are even farther out and so on. This decreasing of pressure is called rarefaction.

Differentiating Sound
We hear different sounds from different vibrating objects because of variations in:

Sound-wave frequency - A higher wave frequency simply means that the air pressure fluctuates faster. We hear this as a higher pitch. When there are fewer fluctuations in a period of time, the pitch is lower.

Air-pressure level - This is the wave's amplitude, which determines how loud the sound is. Sound waves with greater amplitudes move our ear drums more, and we register this sensation as a higher volume.
A microphone works something like our ears. It has a diaphragm that is vibrated by sound waves in an area. The signal from a microphone gets encoded on a tape or CD as an electrical signal. When you play this signal back on your stereo, the amplifier sends it to the speaker, which re-interprets it into physical vibrations. Good speakers are optimized to produce extremely accurate fluctuations in air pressure, just like the ones originally picked up by the microphone. In the next section, we'll see how the speaker accomplishes this.

Making Sound
In the last section, we saw that sound travels in waves of air pressure fluctuation, and that we hear sounds differently depending on the frequency and amplitude of these waves. We also learned that microphones translate sound waves into electrical signals, which can be encoded onto CDs, tapes, LPs, etc. Players convert this stored information back into an electric current for use in the stereo system.
A speaker is essentially the final translation machine -- the reverse of the microphone. It takes the electrical signal and translates it back into physical vibrations to create sound waves. When everything is working as it should, the speaker produces nearly the same vibrations that the microphone originally recorded and encoded on a tape, CD, LP, etc.

Sealed Speaker Enclosures
In most loudspeaker systems, the drivers and the crossover are housed in some sort of speaker enclosure. These enclosures serve a number of functions. On their most basic level, they make it much easier to set up the speakers. Everything's in one unit and the drivers are kept in the right position, so they work together to produce the best sound. Enclosures are usually built with heavy wood or another solid material that will effectively absorb the driver's vibration. If you simply placed a driver on a table, the table would vibrate so much it would drown out a lot of the speaker's sound.
Additionally, the speaker enclosure affects how sound is produced. When we looked at speaker drivers, we focused on how the vibrating diaphragm emitted sound waves in front of the cone. But, since the diaphragm is moving back and forth, it's actually producing sound waves behind the cone as well. Different enclosure types have different ways of handling these "backward" waves. For more fun check out www.CheapDJGear.us and www.CheapCarAudio.us

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