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10" Speaker 350 Watts 3-Way Gem Sound - TR-120 Speaker 450 Watts 12" 3-Way Gem Sound - TR-150 Speaker 600 Watts 15" 3-Way
Our Price: $159.98
Sale Price: $79.99
Our Price: $199.98
Sale Price: $99.99
Our Price: $239.98
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! Behringer EUROLIVE S1020 10" 2-Way Speaker
Our Price: $499.99
Sale Price: $249.99
Our Price: $197.98
Sale Price: $98.99
Our Price: $199.98
Sale Price: $99.99
Gem Sound - TR-300 Speaker 1000 Watts 3-Way EAP EAP-12D Behringer EUROLIVE S1020 10
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! 		The S1020 features the high-quality components and exceptionally rugged construction that ensure long life.
EAP-15D High-Definition Professional Speaker - 700 Watts Peak Power! EAP-215D High-Definition Professional Speaker - 1400 Watts Peak Power! Gemini GSM-1580 - 15" 3-way speaker
Our Price: $259.98
Sale Price: $129.99
Our Price: $559.98
Sale Price: $279.99
Our Price: $279.90
Sale Price: $139.95
EAP EAP-15D EAP EAP-215D Gemini GSM-1580
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! 		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
Gemini GSM-3200 - Dual 15" 3-way speaker GEMINI GX1001 10" 2 Way 400W Powered Speaker GEMINI GX1201 12" 2 Way 600W Powered Speaker
Our Price: $559.98
Sale Price: $279.99
Our Price: $379.90
Sale Price: $189.95
Our Price: $539.90
Sale Price: $269.95
Gemini GSM-3200 GEMINI GX1001 GEMINI GX1201
Awsome for Mobile DJ, Karaoke, Clubs or Parties - Dual 15" woofers, horn & four tweeters Get the sound output of a pro at an amateur price. Get the sound output of a pro at an amateur price.
Gemini XTR-500SYS - Powered Speaker System - 800 Watts Behringer B212XL 12" 800W Passive Titanium PA Speaker PAIR of Behringer B212XL 12" 800W Passive Titanium PA Speaker
Our Price: $1,099.90
Sale Price: $549.95
Our Price: $299.98
Sale Price: $149.99
Our Price: $599.98
Sale Price: $299.99
Gemini XTR-500sys Behringer B212XL 12 Behringer B212XLPAIR 12
15" Subwoofer, Two 10" satellite speakers, built in 800 watt amplifier.
Complete with stands, wheels and speaker cables. 		A powerful, portable system that stays true to your sound. A powerful, portable system that stays true to your sound.
Behringer EUROLIVE VP1220F 12" Floor Monitor Behringer EUROLIVE B215XL Speaker 15" 2-way Behringer B415DSP 600W 15" Active Loudspeaker
Our Price: $339.98
Sale Price: $169.99
Our Price: $399.98
Sale Price: $199.99
Our Price: $999.98
Sale Price: $499.99
EUROLIVE VP1220F EUROLIVE B215XL EUROLIVE B415DSP
EUROLIVE VP1220F Big-time sound that's extremely affordable! With integrated mixer and DSP control!!
Behringer B412DSP 600W 12" Active Loudspeaker Gem Sound - MAP1000 Portable Powered 2-way PA System Technical Pro FUSE215 Professional Dual 15" Speaker
Our Price: $799.98
Sale Price: $399.99
Our Price: $339.98
Sale Price: $149.99
Our Price: $559.98
Sale Price: $279.99
EUROLIVE B412DSP Gem Sound - MAP1000 Portable PA System Technical Pro - FUSE215 - 1600 Watt Speaker
With integrated mixer and DSP control!! Built in 100 watt amplifier and a mixer (2 mics, 2 line). Premium construction quality along with features and performance technology previously unheard of at this price level.
Technical Pro FUSE-12 Professional 12" Speaker Technical Pro FUSE-15 Professional 15" Speaker Behringer EUROLIVE PROFESSIONAL B1520 PRO 2-Way 15" Speaker
Our Price: $237.98
Sale Price: $118.99
Our Price: $317.98
Sale Price: $158.99
Our Price: $699.98
Sale Price: $349.99
Technical Pro FUSE-12 Professional 12 Technical Pro FUSE-15 Professional 15 EUROLIVE PROFESSIONAL B1520 PRO
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. Full-range sound with chest-thumping lows and sparkling highs.
Behringer EUROLIVE B212A Powered Speaker 12" 2-way Behringer EUROLIVE B215A Powered Speaker 15" 2-way Behringer EUROLIVE P1220F Floor Monitor 12" 2-way
Our Price: $559.98
Sale Price: $279.99
Our Price: $659.98
Sale Price: $329.99
Our Price: $259.98
Sale Price: $129.99
EUROLIVE B212A EUROLIVE B215A EUROLIVE P1220F
A loudspeaker with integrated power amp, inputs, level, and EQ controls. An affordable powered PA speaker with input level and EQ controls. EUROLIVE P1220F
American Audio - PXI 12P - Powered Speaker TWO Vocopro PV-802 8" 400W Powered Vocal Speakers Technical Pro SUB-1501X Subwoofer w/Crossover
Our Price: $599.98
Sale Price: $299.99
Our Price: $598.00
Sale Price: $299.00
Our Price: $397.98
Sale Price: $198.99
American Audio - PXI 12P - Powered Speaker TWO PV-802 8 Technical Pro SUB-1501X Subwoofer
High-Powered 12-inch, 2-way speaker with a built-in 300w high-powered bi-amp amplilifier. Vocopro PV-802 8" 400W Powered Vocal Speakers - Sold in Pairs Designed specifically for club and high-end pro audio users.
Technical Pro SUB-1801X Subwoofer w/Crossover USB Powered Speakers 12" / 1100 Watts USB Powered Speakers 15" / 1300 Watts
Our Price: $517.98
Sale Price: $258.99
Our Price: $749.98
Sale Price: $374.99
Our Price: $899.98
Sale Price: $449.99
Technical Pro SUB-1801X Subwoofer USB Powered Speakers 12 USB Powered Speakers 15
Designed specifically for club and high-end pro audio users. Studio-Quality Sound in a Class of its Own Studio-Quality Sound in a Class of its Own
Technical Pro BASS1501 Powered Subwoofer Technical Pro BASS1801 Powered Subwoofer VOCOPRO Sub-1200 12" Powered Subwoofer
Our Price: $579.98
Sale Price: $289.99
Our Price: $779.98
Sale Price: $389.99
Our Price: $478.00
Sale Price: $239.00
Technical Pro BASS1501 Subwoofer Technical Pro BASS1801 Subwoofer VOCOPRO Sub-1200 12
Designed for high-end pro audio  - 1500 Watts! Designed for high-end pro audio  - 2000 Watts! 120 Watts of booming bottom-end bass sound!
FEEL THE MUSIC ... FEEL THE B-O-O-M!
VOCOPRO SUB-1500 15" Powered Subwoofer Behringer EUROLIVE PROFESSIONAL B1800X PRO Subwoofer Nady WA-125U-HT Portable PA System with Wireless Hand-held Mic
Our Price: $698.00
Sale Price: $349.00
Our Price: $699.98
Sale Price: $349.99
Our Price: $299.98
Sale Price: $149.99
VOCOPRO SUB-1500 15 EUROLIVE PROFESSIONAL B1800X PRO Nady WA-125U-HT Portable PA System
FEEL THE MUSIC ... FEEL THE B-O-O-M! When it comes to massive bottom end, the B1800X is the bomb! Compact and powerful Public Address system
Nady WA-125U-LT Portable PA System with Wireless Lavalier Mic
Our Price: $299.98
Sale Price: $149.99
Nady WA-125U-LT Portable PA System
Compact and powerful Public Address system
   
 
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
Pro Audio Video Inc
6533 Promler Ave NW
Canton, Ohio 44720
330-494-2100
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