Pro Dual 21 Band Equalizer
What exactly is an amplifier?
An amplifier is an electrical component that increases a signal, usually by increasing the voltage and the current.
What does it mean to operate an amplifier in Bridge Mode as opposed to Stereo Mode?
Frequently amplifiers will operate in two modes, Bridge mode or Stereo mode. When an amplifier is operating in Stereo mode each channel is functioning independently, with a single input powering a single channel. Bridge mode, also referred to as parallel mode, combines two output channels which are powered by a single input. This will result in a voltage output twice that of an individual channel operating in Stereo mode.
Which Technical Pro Amplifiers can operate in either Bridge or Stereo mode?
Technical Pro offers multiple amplifiers which function in either Bridge or Stereo mode. Currently every model in the L-Series and Slimpro Series is bridgeable. Additionally, the PP-2000 and PP-3000 are available in Bridge or Stereo mode.
What is the difference between a crossover and low-pass filter?
A typical speaker can’t properly drive all the sounds in the audio spectrum. A crossover takes the signal and separates it into frequency bands, low frequencies, mid frequencies and high frequencies. A low-pass filter, which can be found on the Sub and Nuke subwoofers, eliminates or cuts off the high frequencies allowing only low frequencies to continue to the subwoofer. A low-pass filter is typically adjustable allowing the user to choose which frequencies to continue to the subwoofer.
What is a Frequency Response?
The frequency response is the range in Hertz (Hz) that a device can reproduce versus amplitude. The widely accepted frequency range of human hearing is 20Hz-20kHz.
What does impedance measure?
Stated in ohms, impedance measures the resistance of a device to an Alternating Current (AC). Put simply, it measures how easily a device will conduct a current.
What is Sensitivity?
Sensitivity is the minimum power an amplifier must supply to a speaker so the speaker can produce satisfactory volume ratings.
How do I hook up speakers to the amp?
On the rear of every amplifier there are either one or multiple output jacks. The outputs vary by model, but typically will be in the form of RCA, Speakon, Balanced XLR, and Banana binding post. Simply choose the output type on your amplifier and connect it to the input on your speaker.
What exactly is the Hybrid amplifier and what makes it so special?
The Hybrid is the all in one solution for any user. Whether you’re looking for a home receiver or a power amp to power up to four speakers in your club, the Hybrid is up to the task. It’s the versatility of the Hybrid that makes it so unique. The Hybrid is a four channel amplifier with a built-in tuner, preamp, mic, mixer and crossover. Having all these features built-into one sleek package puts the Hybrid in a class above the rest.
When hooking up an amplifier to a PC the volume is very low, why?
In this particular case, when hooking up an amplifier to a PC, the volume is being controlled by the computer speakers. Therefore to adjust the volume, the user must adjust the volume on the actual speaker and not on the amplifier.
If an amplifier goes into “Clip Mode”, how long should I wait before turning it on again?
If your amplifier goes into “Clip Mode” typically waiting 2-3 minutes before turning it on again is suffice.
When loading amplifiers into a Rack, how much space should be left between each amplifier to allow the amplifier to “breathe”?
All Technical Pro amplifiers, with the exception of the Slimpro, and vented and cooled from the back, so rack spacing should not be an issue so long as the back of the amplifier is not covered. The Slimpro amplifier vents from the roof of the unit and therefore about .5 inches should be left exposed on the top of the amplifier.
What is the difference between Technical Pro’s Powered and Passive Speakers?
A powered speaker is just like a passive speaker with one important exception, a built-in amplifier. With a built-in amplifier you can connect your source (ex. CD player) to a preamp and then straight to your speaker. The amplifier in the speaker will then drive the sound.
Can an iPod be connected to any of the Technical Pro amplifiers?
Yes, many if not all products work with iPod just check to see if it has a aux input and your all set!
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Technical Pro’s history traces back to 1971 with a retail electronics store in the South Bronx section of New York. In an era when Brooklyn was distilling beer and New York baseball was more than just a sport.
As the word got out that these guys really knew their stuff about audio and entertainment systems, their small store in the Bronx, began to thrive. Having a keen eye for innovative designs, and a deep rooted passion for music, they saw a void in the audio market.
Performance of audio equipment fell miserably short of customer’s expectations - real professional products were simply not being offered to the average consumer. Rather than selling other company’s “cookie cutter” product, they realized that the only viable approach was to start from the ground up, and totally redesign audio product with the end user in mind.
While they were turning their passion for sound into a reality, they had no idea what they were starting would eventually become one of the industry’s most respected and innovative audio brands. Their unprecedented approach to sound reproduction came much closer to the essence and emotional impact of live music and won immediate acclaim. The quest for better sound was on.
1990 Technical Pro began wholesale its product to other retailers, operating out of its own store on Delancey Street. Word spread. Retailers began flocking in. Eventually, the demand for product made it impossible to fulfill orders out of their retail location. The time to expand to the next level had arrived.
2010 and beyond: Never resting on their laurels, Technical Pro expanded into pro, sound-stage and portable audio, with the same approach they’ve used from the beginning – offer superior sound and innovative features to anyone who shares their passion for music, from consumer to professional.
For audio professionals and sound engineers looking to fine tune audio, the EQ7153 comes fitted with a variety of features that make it the ultimate addition to any sound lineup. To set it above the rest, the EQ7153 comes equipped with dual 21-band equalizers. With a whopping 21 bands, you have the ability to boost and cut output with unparalleled precision over an extended spectrum that accommodates audio from highs to lows. With an adjustable range of ±12 dB at each band you get the ability to fine-tune audio for as much as needed to get the perfect sound. An integrated direct EQ function and bass booster give you even more control of the music.
To easily incorporate it into standard audio controls setups, the EQ7153 comes with rack mounting brackets that can be removed when using the EQ7153 in different settings. The EQ7153 also comes with a fluorescent spectrum display that provides live feedback about input and output. Included controls also allow you to set output to match any setting and input. With a crisp minimalist design, LED readouts, and a sleek finish, the EQ7153 looks as good as it sounds.
|One 21-Band Professional Equalizer|
|Two Rack Mounting Brackets|
|Dual 21-Band Equalizers with Enhanced Adjustment Range|
|Digital Display that Provides Live Feedback|
|Direct Equalization Function|
Equalizers are an integral part of any audio setup. Human hearing is generally understood to range from 20 Hz to 20kHz—with 20 Hz corresponding to low bass sounds and 20 kHz corresponding to high-pitched sounds. When you setup an audio system output has the potential to be distorted by a variety of factors included equipment combinations, quality of speakers, and the nature of the venue itself. If distortion happens, key ranges of sound come across too weak or strong relative to other ranges resulting in output that no longer faithfully replicates sound and can even damage speakers.
If audio output encounters distortion increasing or decreasing the master volume won’t help. You need a way to increase or decrease volume at a specific frequency (pitch). Equalizers are created to do just that, and come with different bands that correspond to different points over the range of human hearing (e.g. 32 Hz, a lower bass frequency or 18 kHz, a high frequency). You can adjust these bands to increase or decrease output at a given point by some amount of decibels while leaving output at other spectrums unchanged. The result is output that overcomes issues created by distortion to give you a sound that faithfully replicates input.
When buying an equalizer two things matter: the number of bands, and the adjustment range. Many stereos come with bass and treble which effectively makes them a two band equalizer. It’s nice to adjust bass and treble, but these two ranges leave out a lot. With more bands you have more equalization points and the ability to adjust outputs in more ways to maximize output. When buying an equalizer figure out how much control you need and pick an equalizer with enough bands to give you the options you need. For most users a five or seven band equalizer will be more than enough but die hard audiophiles may want equalizers ranging up to 21 bands. In addition to the number of bands the adjustment range is also important. If you can only boost and cut output by five decibels you may be unable to adequately tailor the sound even with 21 bands. The best equalizers are those that give you a lot of equalization points and the option to substantially adjust output sometimes by as much as ±10 dB.
19'' L x 5.25'' W x 3.5'' H
|Equalizer||Dual 21 band|
|Inputs||RCA (4 audio sources), MP3 (1/8'')|
|Outputs||RCA (record, main)|
|Equalization Points||32Hz, 63Hz, 100Hz, 120Hz, 150Hz, 200Hz, 275Hz, 350Hz, 500Hz,
650Hz, 800Hz 1kHz, 2kHz, 4kHz, 6kHz, 8kHz, 10kHz, 12kHz, 14kHz, 16kHz, 18kHz
|Mount||Removable rack-mount brackets|
At Technical Pro we understand that the best sound systems incorporate high-quality components at every level. In our Pro Audio line we’ve created a set of audio equipment designed to maximize output every step of the way. From source to speaker, our Pro Audio line preserves and enhances sound to deliver only the best output.
This product is built with the same quality found in all Technical Pro equipment ensuring it follows you from gig to gig over an extended lifespan. We stand by our work and every Technical Pro product comes with a one year warranty.
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