![]() Mixed Sounds - Rhythms | Random-Lights-Show | Prices | Sound Systems | Special Effects | Club Listings | Club Reviews | DJ Recordings - Mixes | Contract | Employment | Contact | Press Releases | Promo Mix | Utilities PROFESSIONAL DJ, SOUND, LIGHTS/LASER/SPECIAL EFFECTS & DAZZLING AUDIENCES DJ SYSTEMS (this page takes a little time to load with dial-up service, please wait)
AUDIO SYSTEMS (maximum peek capabilities at over 9600 watts; recommended for spaces 20000 square feet and over only) ![]() Two (HPS-1540) Super high density 4" x 10" horn Three 3" super tweeters Fine tuned ports for superior sound Dual 1/4" phono jacks & Banana Terminal Double Shielded speaker terminals Wheels and handles for easy moving Plastic corners and carpet finish Power handling: 300 watts peak 8 ohms Frequency response: 32Hz-20kHz Sensitivity: 98dB Top Hat Mounting for Speaker Stand. (1) amplifiers below - click here
![]() Four (HPS-1870) 18 inch Ridge surround high temperature woofer 500 watts peak Super high density 4x10 inch horn Three 3 inch Super Tweeters Fine tuned ports for superior sound Dual 1/4 inch phono jacks and nanana terminal Double shileded speaker terminals Plastic corners and carpet finish Power handling: 500 Watts Impedance: 8 ohms Frequency Response: 32 Hz-18kHz Semsitivity: 98dB. (2) amplifiers below - click here
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![]() Eight (PA-1565A) 800 Watts Peak/Made in USA Super high density horn Three Super Tweeters Double shielded speaker terminals Heavy Duty handles for easy moving Plastic corners and surround finish Power handling: 800 Watts Impedance: 8 ohms Frequency response: 30Hz - 20kHz Sensitivity: 93dB (3) amplifiers below - click here ![]() Two sub-woofers, each has one 18 inch woofer with a 90 ounce magnet. 260 watts rms, 600 watts peak. Lots of up front bass. 8 ohm. 20 to 300 hz. Weight 81 pounds each. ![]() (1) One Multi-channel power amplifier. 275 watts per channel at 8 ohms. 450 watts per channel at 4 ohms. 560 watts per channel at 2 ohms. 850 watts at 8 ohms bridge mono. Neutrik 1/4" and XLR input jacks. Dual Banana jacks (binding post) for speaker outputs. Two dual speed cooling fans. Used for spaces of limited dimentions and for stage monitors. ![]() ![]() (2) Two Multi-channel power amplifiers. 400 watts per channel at 8 ohms. 660 watts per channel at 4 ohms. 1800 watts per channel at 2 ohms. 1200 watts at 8 ohms bridge mono. Neutrik 1/4" and XLR input jacks. Dual Banana jacks (binding post) for speaker outputs. Two dual speed cooling fans. Our regular workhorse for lounges and nightclubs. Delivers 1600 watts of power to 4800 watts at 4ohms; unsurpassed clear, clean, crisp sound and no audible distortion at 8ohms. No echo, recoil or bouncing sounds. ![]() ![]() ![]() (3) Four Multi-channel power amplifiers. 600 watts per channel at 8 ohms. 1200 watts per channel at 4 ohms. 1800 watts per channel at 2 ohms. 850 watts at 8 ohms bridge mono. Neutrik 1/4" and XLR input jacks. Dual Banana jacks (binding post) for speaker outputs. Two dual speed cooling fans. Power capacity of 4800 watts at 8ohms; used for outdoors festivals and audiences of 4000 people or more. Max. capacity of 9600 watts for crowds of 10,000 people. Clear, clean, crisp sound. ![]() Dual CD player with 6-12% pitch control plus pitch bend over 10% for ease of beat mixing. True auto cue & assignable cue. Single or continuous track. Loop button. End of song warning. Time display-track elapsed, remain, overall time. ![]() MACKIE 1402-VLZ- Mixer Ultra-low noise, highest headroom in its class 4 new precision-engineered XDR(tm) Extended Dynamic Range premium studio-grade mic preamps with: Ultra-wide 0–60dB gain range 130dB dynamic range 24-bit, 192kHz sampling rate inputs +22dBu line input handling Distortion under 0.0007% (20Hz-20kHz) Advanced DC pulse transformer RF rejection 6 high-headroom line inputs Separate RCA-type tape/CD inputs and tape outputs (unbalanced) 2 aux sends with 15dB of extra gain above Unity Constant-loudness pan pots PFL Stereo in-place Solo on each channel 2 stereo aux returns w/EFX to Monitor Aux 1 master w/ Monitor/Post assign 3-band active EQ (80Hz, 2.5kHz, 12kHz) 18dB/oct. 75Hz Lo Cut filter eliminates stage rumble, wind noise, P-pops and low frequency recording studio room resonances Extra ALT 3-4 stereo bus for submixes, separate recording, monitor and 'mix minus' feeds Control Room/Phones multi-input source matrix Phantom power for premium condenser mics Rugged steel chassis, sealed rotary controls Built-in power supply. ![]() Mixers, 3 mic, 3 phono, 8 line/cd inputs. 24 second digital sampler with flexible sampling banks. Voice cancel button on line #4 for karaoke (cancels varying amount of vocals depending on the CD). Assignable cross fader. Dual 7 band eq. Echo with delay & repeat. 2 DJ mic inputs have bass & treble knobs. ![]() Equalizer. Dual 15 band equalizer. Each channel is 2/3 octave. Switch for 6 or 12db boost. Two gain controls. Low cut switch. Unbalanced and balanced inputs and outputs. ![]() Electronic crossover. 2 way stereo or 3 way mono. Selectable crossover frequencies. Level controls. 18db-octave. Balanced and unbalanced inputs and outputs. An electronic crossover gives you the cleanest sound possible because it separates the high's and low's at a low line level before the amplifier instead of at high power levels and high heat like crossovers in speaker cabinets do. ![]() Limiter Compressor/Limiter/Gate. 2 channel. Compressor/limiter adjustments: threshold, attack, release, ratio, output. Gate adjustments: threshold, rate, filter. This is what radio stations use to make all output the same volume! The compressor/Limiter section of this unit can be adjusted to increase the volume of low level recordings and decrease the volume of high level recordings smoothly so your dancing customers will hear the same volume all night. The Gate section is used to remove low volume hum and hiss. ![]() Sonic maximizer with sub woofer output makes recorded music sound like a live performance! Stereo, 2 knobs control both channels at the same time, plus crossover control for sub woofer output, (30-120hz). (2 outputs, 1 full range and 1 sub woofer). STAGE EQUIPMENT ![]() ![]() ![]() ![]() ![]() ![]() Six low imp. Frequency response 50 -16k.Minimizes background noises and feedback. With stands. Six mic. for instrumentation and vocals. ![]() ![]()
![]() ![]() ![]() ![]() ![]() Five balanced counterweight arm microphone stands for instrumentation and three upright w/base. All adjustable. ![]() Two wireless hand held mic for vocals. Frequency response better than 100 -10k, XLR plug in transmitter, receiver with built in 1/4 inch plug. With stands. Two wireless mic. can replace two wired mic. above. Also used for presentations and announcements. ![]() Two 100 watts max. power, 8ohms nominal impedance, 54Hz -20Khz frequency response, 98dB average SPL, 50Hz low frequency. Weight 40.5 pounds each. LIGHTING SYSTEMS Random Light Shows
Lighting Equipment ![]() Floor light features 7 gobo patterns and 4 dichroic colors. The patterns slowly change while the mirrored dish rotates to the music, dancing the many multi colored patterns around the floor. Built in mic. (3 amp.) This would be considered a very busy light. It will cover the floor or ceiling with many gobo patterns of different color. ![]() ![]() Four Strobe boxes. Heavy duty variable speed strobe. Up to 4 strobes are linked together for synchronized flash. Clear lenses are colored with gel sheets. ![]() 6 spot lights with color lenses are mounted in 1 case with a built in controller featuring 5 chase patterns and sound activation. Change patterns and speed. It has a diffusion lens to change from spots to floods. Built in mic. Lenses are red, green, amber, blue, yellow, purple.
![]() Four black par 38 can with standard screw in socket, cord, gel frame, mounting bracket. These are floods designed to wash an entire room or wall.
![]() Four sound active moonflower shoots out many multi-color beams which rotate, stop, and change directions to the music via built in mic. Current draw 1 amp. ![]() Sound active moonflower shoots out multiple white beams which rotate, stop, and change directions to the music via built in mic. ![]() DOUBLE-DERBY With 2 rows of 10 lenses, it shoots out 40 square multi-color beams which move left / right, and up / down to the music via built in mic. ![]() Features 15 large rectangle lenses and two bulbs in special pattern reflectors. Projects 30 flower-like multi-color patterns that move up/down and side to side to the music. ![]() Projects an ever changing spectrum of dichroic rainbow colors. Adjustable focus. Light travels thru only one piece of dichroic colored glass at a time, dichroic glass creates the best colors. NEVER use 1/4 inch phone plugs for speaker connections. When you use a 1/4 inch plug and jack for speaker connections, you have less connection area than you would have if you touched the tip of one fingernail with another. This translates into a loss of power. We have tested two identical speaker cabinets powered by two channels of the same amp using a speaker cord with 1/4 inch plugs on both ends for the left speaker and on the right speaker we used a cord without any plugs so we connected the wires directly to the red and black binding posts on the amp and the speaker. Everyone in the room could hear the difference in volume between the two speakers. 2. IMPEDANCE: 2 OHM, 4 OHM, 8 OHM, 16 OHM All speakers have an impedance measurement just as they have a diameter measurement. Not all speakers are 15 inches in diameter and not all speakers are 8 ohms. The most common 12, 15 and 18 inch woofer used in speaker cabinets by clubs and DJ's is an 8 ohm woofer. If you have two of them in one cabinet you can wire the two woofers in parallel to create a 4 ohm cabinet, or you can wire them in series to create a 16 ohm cabinet. The parallel wired 4 ohm cabinet will produce much more volume, (6dB to be exact), and would be considered much more efficient. The series wired 16 ohm cabinet will need much more power, (4 times as much), to produce the same volume as the 4 ohm cabinet, so it would not be a good choice for economic reasons. Since the 16 ohm cabinet will need more power to produce volume, many lower end companies mass produce these cabinets and heavily advertise the high power that they can handle, as if that makes it a better speaker than the more efficient and lower power speaker. This is the most misleading specification we see in advertising. One club audio company that advertises as much or more than anyone else makes a dual 15 cabinet with two 16 ohm woofers wired parallel to create an 8 ohm cabinet. They advertise it as having a huge power handling capability, but in reality it is much less efficient when used with the same amps that would easily power other cabinets loaded with two 8 ohm woofers wired in parallel. Another mass advertised speaker has two 4 ohm woofers wired in series to create an 8 ohm cabinet. This is still not as efficient as the two 8 ohm woofers wired parallel. This is where you must make a choice. Do you want a good sounding, efficient speaker cabinet that you can power with a small affordable amp, or do you want a speaker that produces much less volume and you have to buy a larger amp, but you have a little less chance of blowing. While we are talking about speaker impedance we need to mention something about amplifier impedance. Most amps tell you the power output at 8 ohms, 4 ohms and 2 ohms (if the amp is capable of handling 2 ohms). An amp is most comfortable driving an 8 ohm load. That's why the 8 ohm rated power output is the lowest and the distortion level at 8 ohms is also the lowest. When you connect a 4 ohm speaker to the amp, it's a harder load for the amp to power, just like pulling a 5,000 pound trailer is harder on your car than pulling a 2,000 pound trailer. The power output rating is higher than at 8 ohms, but the distortion level is also greater. Many of the popular low price amps today are not capable of powering a 2 ohm load. It would simply heat up the power transistors too much. For amps that can handle a 2 ohm load, it is the hardest load for the amp to handle and causes the most heat build up which leads to a higher level of distortion. If you have ever installed your own car audio system, you may have noticed that 4 ohm and 2 ohm loads on the amps are common. That's because there is so much road noise when driving your car that the higher distortion level of the amp usually goes unnoticed. 3. MAGNET WEIGHT This is another very misleading specification. Most people think that a woofer with a 90 ounce magnet has to be better than a woofer with a 50 ounce magnet. Simple logic tells you that this should be true, but it is not. We have seen many woofers with larger magnets not perform as well as woofers with smaller magnets and we have also seen many companies rate their magnet weights wrong. This would be like thinking that all cars with larger engines out-perform cars with smaller engines. There are too many other factors involved for that statement to be true. Voice coil diameter, number of windings, size and type of winding wire and cone material are all just as important, but you almost never see these items listed in advertising. 4. POWER: RMS, CONTINUOUS, PEAK I have a good friend that has tested speakers in the U.S.A. for over 30 years and he gave me the best definitions for these 3 power ratings. He sends a sweeping signal of all frequencies to the speaker and slowly increases the power. When he feels like he is getting near the maximum power that the speaker can handle, he extends the time before raising the level again. When he hears the slightest distortion or smells the coil getting hot, he backs it off 5 watts and lets it run for a few hours. If it endures that test, it gets a "Continuous Power Rating" of the power it handled for those hours. RMS is the product of a math formula and it would rarely ever be the same as the continuous power level measured manually. In our industry the two terms are often mistakenly used to describe the same thing. I would rather have an honest manual measurement than a math formula. Peak power usually means the highest amount of power that the speaker can handle for less than a second at a time. Although you can test a speaker for this measurement using the same method above, it is more common today to see speaker manufacturers double the continuous power measurement and call that the peak power even though it may not be technically accurate. Just like the other measurements of speakers we mentioned above, power handling is very misleading. We tested a pair of speakers from one of the biggest advertising club audio companies that were rated at 320 watts. When they arrived, they had a spec sheet that showed the PEAK power handling at 320 watts but the continuous power handling capability was rated at 160 watts. During the test, the horn driver began distorting at around 100 watts when the music had heavy bass playing. You might wonder how a speaker that starts distorting at 100 watts can be advertised as a 320 watt speaker. There is no standardized method of measuring these speaker specifications. Everybody does it however they please. Some companies choose to rate conservatively which is better for you but doesn't look so good on paper, while other companies grossly exaggerate their specifications to look great in advertising but it's not so good for the customer. The best way to measure the power handling capabilities of a speaker is to play the same music through it that the customer will be playing through it. Since that is not usually possible, most companies send computer generated signals to the speaker and see how many watts it can handle before it distorts. (That would be the point at which the voice coil has been thrown past the edge of the upper magnet plate). If that signal is full range and not just one frequency, and played for 4 hours, you will get a close idea of how much power the speaker can really handle. Unfortunately, many budget speaker companies will send a signal that is just one frequency and crank up the power for 30 seconds to get a high power handling reading that is not an accurate representation of what the speaker will do with full range music playing through it. This type of reading may be legally "correct", but not what you and I would consider "true". Another method we have seen used by many budget speaker companies is to take the power handling capabilities of each individual component in the cabinet and add them up. If they were each measured conservatively and you made a great crossover to protect each one, this would be a better method than the single frequency signal method, but still not as accurate as a full range signal played for 4 hours. 5. CROSSOVERS: ELECTRONIC AND PASSIVE A crossover limits the frequency range that reaches a speaker. Almost everyone will say too much power blows speakers. It would be more accurate to say that too much of the wrong frequency blows speakers. First and most important note; I have never found anyone that disputes the opinion that an electronic crossover is better than a passive crossover. Here's why: an electronic crossover selects the frequencies to be passed to the speakers at a low line level before the amplifier. At this low level, there is no distortion and absolutely no loss of signal. A passive crossover is usually mounted inside the speaker cabinet and selects the frequencies to be passed to the speakers at a very high level after the amplifier. The main problem we have seen with these passive crossovers in budget speakers is the design of the crossover itself. To save money, they usually scrimp on this component a little too much. We have seen many crossovers that were designed to handle only 50 watts installed in a cabinet that was rated at 120 watts. This is the main reason we see so many budget speakers distort earlier than their more expensive counterparts. There are 4 types of passive crossovers: LOW PASS, HIGH PASS, BAND PASS, NARROW BAND PASS. LOW PASS crossovers allow low frequencies to pass through to the speaker while gradually reducing the power of the higher frequencies and cutting them off. Coils are used in low pass crossovers because they cut out the higher frequencies. HIGH PASS crossovers allow the high frequencies to pass through to the speaker while gradually reducing the power of the lower frequencies and cutting them off. The power reduction increases as the frequencies become lower. Capacitors are used in high pass crossovers because they cut out low frequencies. BAND PASS crossovers are a combination of the two above. They only allow a certain band, or range of frequencies to pass through to the speaker. This type of crossover is most often used on mid range speakers where the extreme highs and lows are cut off so they do not reach the speaker and cause it to distort. NARROW BAND PASS crossover must be used when the band of frequencies chosen to reach the speaker is less than a decade apart, that is, if the high crossover frequency is less than 10 times the low crossover frequency. A narrow band pass crossover has the same function as the normal band pass, however, it is wired very differently. Crossover points or frequencies are achieved by using different values of coils and capacitors. There are different rates for the reduction of power, called SLOPES. The most common are 6dB, 12dB and 18dB slopes. A 6dB slope will reduce the power at a rate of 6dB per octave starting at the chosen crossover frequency, creating a gradual slope of power reduction. The 12dB and 18dB per octave slopes work the same way except that a 12dB slope has twice as much reduction per octave as the 6dB slope and an 18dB slope has 3 times the amount of reduction, thus cutting off those frequencies 3 times as fast. If you are making your own crossovers, here are a few starting tips: Air core coils are best for higher frequencies. Iron core coils are best for lower frequencies. Solid iron core coils are best for low frequencies at high power (over 300 watts). Polypropylene are the best capacitors. Mylar capacitors are next best. Non-polarized electrolytic are the most commonly used. 6. SPL 1w/1m This stands for Sound Pressure Level measured at 1 watt of power and at a distance of 1 meter from the speaker. This should be a great way to gauge the efficiency of all speakers and although there is a standard method of performing the test, many of the budget speakers we have tested don't come close to the manufacturers spec's.. From what I have seen in speaker catalogs, I think most measurements have been copied from the spec's of the individual horn or midrange components instead of an actual reading from all components operating together in the speaker cabinet. 7. HORN DRIVERS: COMPRESSION AND PIEZO Because there is no voice coil in a Piezo driver, it is usually
harder to blow than a compression driver with a voice coil. Most
people don't even use a crossover with a Piezo driver. Right now
most people would be wondering why anyone should use a compression
driver if they cost more and can be blown easier. The answer is
simple, they sound better. The Piezo is most commonly referred
to as being harsh sounding because of its 3 frequency limit. Yes,
it can produce high's and a lot of volume, but it has never produced
high's as smoothly as a good compression driver. There are two types of compression drivers used in our industry.
The less expensive of the two has a Phenolic diaphragm and the
more expensive unit has a Titanium diaphragm. The Titanium diaphragm
is much better for reproducing the extreme high's heard when a
drummer crashes his cymbals. Both units have a heavy magnet and
a voice coil with wire windings just like any woofer. Both units
need a good crossover to protect them from harmful low frequencies. Return to Home Page |