Wednesday, January 25, 2012

【 Weak current College 】 woofer speaker setup and settings---Power By 【 China power house network 】


When you carefully adjusting a home theater system, you want to find a woofer speakers the best location to home theater systems to achieve optimum combination and sound effects for home theater users this has always been a great challenge.
In this challenge, there are two major factors are indispensable, surrounded by the listening area room boundaries and the boundaries around air energy storage capacity. These two factors combine to determine the listening area of unique acoustic properties.
Repeated testing is the key to getting the best sound and practical way. Reality does not exist a perfect set-up locations, you can only find those closer to the perfect location. You need to draw many sketch, and in some ways to make some compromises. Compromise is not only listening room acoustic properties of the result, but also for the beautiful, practical and other considerations, such as the wife of preference, and you cannot fail when back to business. In some families, wife of preference may be the most decisive factors.

The Bible of the woofer Setup cheat codes will be introduced to you, in one listening room how to display two woofer speaker. The trick here is to teach the technique does not require any type of measuring instrument, you only need a pair of ears can take care of everything. Of course, you also have the most basic test signal, such as a test CD albums and hit, or contains a large number of low-frequency content of music CD album. If you have a can of accurately measuring the sound pressure instrument, of course, the best; but if you haven't, don't worry, we have tricks up their sleeves.

A, room control

Many people have for their room the size of the "ideal" and proud. In General, the area of the listening room, low frequency waves can be heard, the fewer problems. In order to get smooth and balanced low-frequency sound, room ceiling to not less than 3 m, width to 3.6 m, length to 7.5 m (if you want more deep low-frequency, 9.1 m). Room of all sides (including the diagonal line) should not be an integer multiple of Sonic wavelength, the resonance phenomenon will occur. Of course, the larger the listening room, the more you need sound facilities to reduce acoustic reflex, but standing wave is generally not in the formation of large listening room. Another point is very important to use the absorption material, this time-frequency attenuation in General and to the same frequency. This is what people call "neutral room".
Light and flexible walls can act as a very good sound-absorbing walls, where low frequency sounds will go through the wall, there is no reflection. The gypsum board, timber and dual layer structure with the correct stone built walls can achieve this effect. A world class standard room usually require the use of sound-absorbing materials, powder tones/to eliminate resonance or echoes. To watch out for the holes in the walls, they also can cause resonance. Build a good low-frequency response, proper internal acoustic features and State-of-the-art external noise effects of large room is a professional audio Division.


Second, the speaker's place — use the feet or shock pad?

Speakers can be installed in a hole in the wall, the speaker of the front panel and flat to the wall. This installation requires the skills of the professional sound engineer, we don't do too much of the discussion. Main speaker must be coupled with the removal of the floor. Heavy and solid tripod at the top to the bottom of not greater than the speaker in order to avoid the sound diffraction (this is a kind of comb-filtering). Feet stable effect is good, but is easy when using the carpet punctured carpet.

Some people recommend heavy speakers following pad lock-mat in place of the feet. No matter which Hina, its goal is to reduce the synchronous resonance, or reduction in the box, floor and wall between the conduction of sound. Cabinet and the tripod's resonant frequency should be very low. Fist on a knock box, to confirm that it does not have a resonance characteristics to your audio system to input a sine wave signal, listen to the watch case is there any vibration.


3. positioning of the speakers

The woofer speaker set-up, we assume that: (1) you have a pair of healthy ears, you can assess your room's acoustic characteristics; (2) unless otherwise noted, you are using two woofer speaker; (3) do you have enough test signal software to test your listening position heard sound field characteristics at different locations, as well as the room is how it affects the sound effects; (4) sound system all necessary correction work already completed.
Woofer speaker set-up and correction can be divided into five steps:
1. woofer speaker set-up adjustments; 2. listener seat adjustment; 3. the main speakers and woofer speaker phase adjustment between; 4. the balance of the various parameters; 5. woofer speaker and main speakers match of gain.
I have seen in a room in the system to adjust the sound system to determine if more than one woofer speakers the best set-up of different methods. Here is one method:
This is a process of trial and error, you may want to once again listen to the same content. When you're bored you can sit down and have a rest, to auditory fatigue to a minimum.
In each test every step to make notes, to take advantage of some of the chart, try to write down some details, such as speaker set-up, and set the parameters, and so on, so that when you feel the sound is one hour earlier, you can then adjust back to a previous state. Remember, here you have to deal with the many variables, a record of each parameter can make adjustment process faster more efficient.

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