テレビの後ろにサブウーファーを置いても大丈夫ですか?

サブウーファーを購入したばかりで、ホームシアターのどこに配置するか迷っています。優れた低音をポンピングしながら、ボックスを見えないようにしたい。テレビの後ろに置くのがベストだと思います。

それで、サブウーファーをテレビの後ろに置いてもいいですか?簡単に言えば、大きな問題ではないかもしれませんが、特にフロント ファイアリング サブウーファーやブラウン管テレビの場合はお勧めしません。不要な反射音が発生し、低音の質が低下する可能性があるためです。ただし、ダウンファイヤーのサブウーファーを使用している場合、またはテレビの後ろに十分なスペースがある場合は、サブをテレビの後ろに配置しても問題ない場合があります.

それにもかかわらず、サブを配置するより良い場所がない場合は、ここで説明するいくつかの基本原則に従って、欠点を回避し、エンターテイメントのニーズを満たすことができます.

テレビの後ろにサブウーファーを配置することが推奨されないのはなぜですか?

多くの人がサブウーファーをテレビの後ろに置いていますが、問題はないようです。多くの人はそうしても問題ないと言うでしょう。

ただし、本格的なオーディオファンは、これはサブウーファーを配置するのに最悪の位置の 1 つだと言うでしょう。

サブウーファーをテレビの後ろに配置すると、低品質の低音出力が得られる可能性があります。これは、テレビとサブウーファーの間の距離が近すぎる場合に特に当てはまります。

サブウーファーをテレビの後ろに配置する必要がある場合は、試行錯誤を友達にして、ニーズに最適な正確な距離を得る必要があります.

テレビの後ろにサブウーファーを配置することが最善の解決策ではない理由を正しく理解するには、テレビの後ろにサブウーファーを配置することの次の短所を考慮してください。

1.部屋の音響と干渉

多くの人は、低音の音波は無指向性であるため、サブウーファーをどこに配置しても問題ないと主張します。これは、低音の波があらゆる方向に放射されることを意味します。

確かに、低音の波は無指向性ですが、サブウーファーから得られる低音の質は、サウンドがサブウーファーから出たときに何が起こるかによって異なります。

言い換えれば、部屋の音響は、部屋の低音の全体的な品質に大きな役割を果たします。このため、サブの配置は、ホーム シアター ルームの音響に応じて異なる必要があります。

では、テレビは部屋の音響にどのような影響を与えるのでしょうか?

一部のテレビ画面は非常に大きいことを覚えておいてください。ここで、非常に大きなテレビの後ろに小さなサイズのサブウーファーを置いたとしましょう。この場合、テレビの表面は低音の多くを反射します。

テレビから跳ね返る反射音波が、テレビからのソース音波と結合すると、結果として音響干渉が発生します。

言い換えれば、テレビの位置は、サブからの音波とテレビの表面から反射された音波の相互作用に干渉します。

2.不要な振動

One of the main reasons we often recommend that people place their subwoofer behind their couch is for people who like to feel the vibrations from sound effects.

When there is a huge explosion or thunder in a movie, some people want to feel the vibrational effect. This is why we have bass shakers.

Placing the sub behind a TV will cause the TV to vibrate much as the coach would. This is especially true if you place the sub too close to the TV.

While the vibration may not be a major problem for you, it can be quite annoying for many people.,

3. Wall/Corner Acoustics and Echoes

If you place your TV a short distance from the corner of the room, it means the sub will be at the corner. In this case, you may end up with a lot of reflection. So, if you choose this arrangement, you could end up getting echo-like bass, which can make it hard to get the right dialogue in the audio.

4. Bass Reflection

Before trying to place your sub behind your TV, you should think about the possibility of the sound-waves bouncing off the TV and passing over your head.

Since the TV is in front, it is easier for the sound that has bounced to be sent to the roof or over your head.

Whenever this happens, the overall sound quality of your system may not be that great. If you want to get more bass out of your subwoofer, this is not the way to do it!

5. CRT TVs (Older TVs)

Remember, subwoofers are really speakers that produce low-frequency sounds and so they have magnets within them.

If you are using an older style CRT TV (large back TV), then the magnetic field created by the subwoofer may have an adverse effect on the TV. This could be in the form of a rainbow-colored effect on the screen or something similar.

However, if your subwoofer is magnetically shielded then you shouldn’t have a problem with this. Most modern subwoofers are magnetically shielded. If the sub is not shielded, you’ll have to place it far away from the TV to avoid this weird effect.

Of course, this should be a problem with modern TV’s like LCD/Plasma/DLP. This only affects CTY TVs.

Good Reasons To Place My Subwoofer Behind My TV

So now that we have covered all the cons of placing your subwoofer behind your TV, what about the pros of placing your subwoofer behind your TV?

1. Aestehtics and Cable Managment

The most likely reason people chose to place their subwoofer behind their TV is for aesthetic purposes. By this we mean they want to keep the sub and its cables out of sight. However, a location chosen by convenience is seldom, if ever, the best location possible.

As far as we are concerned, subwoofers add a unique aesthetic appeal to home theatre systems. So, if you put your subwoofer behind your TV, you would have reduced the aesthetic value of your sound system. Of course,e that’s just us.

In addition, many people also prefer this type of placement since it allows them to manage their cables with ease, and this also helps to improve the appearance of the room.

It is important to consider when you don’t want to see power cables running across the room. With this placement, you have enough space behind the TV where you can tuck them and reduce the dangerous and unappealing cluster of power cables.

Of course, this is not important if you have a wireless subwoofer.

2. Soundstage and Stage Imaging

Soundstaging is an important factor for many audiophiles. In layman’s terms, it refers to how well each speaker is able to reproduce its sound in detail where and how they should. For example, left speakers dominate the left of the room and right speakers dominate the right, and so on.

Placing your subwoofer behind your TV normally means placing it in the middle of the room.

This is normally equal distance from the L/R main speakers and so this does help with soundstage and sound imaging. However, you could get the same effect if the sub is placed below the TV.

Consider also that if there are acoustic problems in the room, placing the sub on the center like this will amplify those problems equally through the room.

Placing the sub to the side will reduce the degree to which the pressure created in the room amplifies those acoustic defects.

The fact is, playing your sub in the middle of the room really means placing it in the middle of two parallel walls which can cause a lot of constructive and destructive soundwave interference

How Can I Place a Subwoofer Behind My TV

If you decide to put your subwoofer behind your TV, there are some general rules of thumb to follow.

As a general rule, if you want the best sound quality, you should place your sub with the loudspeaker facing out to the listening room, and nothing is obstructing the flow of the soundwaves. You should also ensure that the port is away from the wall.

Nonetheless, let’s face it there are times when we can be limited by different factors, including space and wires, as to where to put your subs.

Many people find themselves in similar situations and are forced to put their subs behind their TVs.

You have free reign over where to put your sub, all we can do is give you the best tips that will help you get the best out of the device. If you have to place your subwoofer behind your TV, ensure you do the following:

1. Avoid Walls or Corners

Despite the limitations that you may face, you should ensure nothing hinders the omnidirectional bass waves.

As we have said, you can achieve this by placing the sub away from walls and corners. The distance should be between 6″ and 12″, but more is usually better.

However, you can put a sealed subwoofer in a corner.

If you are using a ported sub, do not place the port towards the wall. Many people will suggest that you can plug up the hole with softballs, socks, or anything else to reduce the reverberation, but we do not recommend blocking the port. Even though this is a commonly used method, it reduces the bass’ quality.

2. Avoid Placing The Sub Under Furniture

When people face space limitations and want to reduce the demerits of putting their sub behind their TVs, they place them under tables. Some people chose to place their sub under a couch.

This move often causes gaps in the acoustic signature of the room, given that the dense mass of the furniture can absorb the waves.

So, putting subs under different pieces of furniture to avoid using behind your TV may not help. It can defeat the purpose of using a sub. But it is better than putting the sub in an enclosed cabinet.

3. Avoid Placing The Subwoofer Inside a Closed Cabinet

From experience, this is often the worst option. It can void the entire point of spending your money on the equipment.

Cabinets prevent bass waves from bouncing around, so putting your subwoofer insider one can cause it to be dull and muted.

4. Ensure The Subwoofer Is In Phase With The Front Sperakewre

The fact is, probably even more important than subwoofer placement is ensuring that your subwoofer is in phase with the main speakers. We have a detailed guide on how to set your subwoofer’s phase.

If you must place your subwoofer behind your TV, try and get it to blend in with the front speakers as possible.

5. Adjust Settings For Maximum Sound Quality

So we have said when you put your subwoofer behind your TV, you may not get the best sound quality. Now you might be asking whether you can improve the quality by adjusting any settings.

Well, sure.

You won’t lose anything when you play around with the setting to see if you can get more from the sound system despite its unfavorable position.

Many A/V receivers have efficient room correction settings that can automatically detect subwoofer placement issues and speaker distance and help you get the best quality.

For example, you can use crossover settings to refine when audio switches to subwoofer output from speaker output.

Where Is The Best Place To Put A Subwoofer For TV?

For most sound enthusiasts, subwoofers sound best when placed in the front of the living area, directly facing the listeners. This style of sub placement is effective as it keeps the front speakers in sync with the subwoofer. Audio experts have different placement ideas for your woofer, it is important to note that all spaces are different. If you have a mounted TV, place the sub underneath the mount.

Should The Subwoofer Be In Front Or Back?

Placing your subwoofer in front of the room is the generally accepted position, this is due to a number of factors. This is to mitigate the consequences of localization, it also ensures optimal mixing of audio signals from main to central channel.

What Does A Subwoofer Do For A TV?

Your subwoofer (when positioned right), is designed to put out a low frequency bass sound. What this means is that, your sub boosts all the bass from your TV/speaker. This can be a real treat when having a cinematic experience, the sounds from the movie are boosted and enhanced.

Should My Subwoofer Be On The Floor?

When your subwoofer is placed on a raised platform, it will produce better sounds/audio signals. However, for proper care and safety, it is advised to place your subwoofer on the floor. It is important to note that, since all listening spaces are different, there are no clear rules.
Trust your ears, trust yourself and do whatever works best for you.

結論

We hope you now understand how placing a subwoofer behind your TV can affect the overall sound quality.

However, if you have no better option, you can put it there, just be sure you avoid walls, corners, and other pieces of furniture to improve your experience.

Also, keep in mind that the correct location for the sub largely depends on your room. You need to test multiple locations preferably using an SPL meter to find the most optimal placement.