Can I use large floor speakers (8 inch woofers) sub woofer?

Question

Floorspeakers have 8 inch woofers. will sub woofer reduce bass from larger speakers

Answer 1

You don't say anything about your main L&R speakers other than woofer size but I am going to assume here that they have a good low frequency response.

The sub will only lessen the bass output from your mains in one of two ways:

1) If you send the signal to the sub speaker level and then to the mains from the speaker level outputs on the sub. There is likely a crossover in the sub that will take low level bass away from the sub.

2) If you designate all of the low level bass to be sent to the sub in the receiver's menu. Be sure you set your speakers to large in the receiver's menu. Also tell the receiver to send LFE to both the sub and the mains in the menu.

Go ahead and expirament with the crossover on the sub. If you set it kust below the low frequency response of the mains you will find that the sub will not see much use and the 8" just won't do the job satisfactorily in the rest of the omnidirectional range. There is nothing wrong with some overlap with the mains since bass below 100 hz or so is omnidirectional anyway. I would probably set the sub's crossover between 80-90 hz.

Answer 2

The problem is that to get enough bass volume from the 8-inch floor speakers, you will get a lot of distortion. Depending on what kind of music you listen to, you may be able to get by without a sub. However, if you listen to classical (especially organ music) or some kinds of rock, they can often produce tones below 40Hz, and your floor speakers will have a problem with that.

Even if you don't listen to that kind of music, a sub is needed to get the low-frequency effects from movies. If that is your only need for the sub, try to get one that you can limit to 60Hz, so that the main speakers carry most of the sound.

By the way, the size of the room makes no difference in your ability to hear low notes, and smaller rooms (smaller than half the wavelength) are actually better, since they won't have nodes. I have heard 20Hz tones in very small rooms (hi-fi demo rooms).

Answer 3

Hi there.If you adjust the sub woofer's bass to extend the bass from the 8 inch woofers low limit you will not reduce the bass.If for example the low limit of you floor speakers is 50 HZ you would adjust the sub's frequency response to start at say 60 HZ so there would be a smooth transition from woofer to sub woofer.

It is best to have 2 sub woofers ,one near each of your floor standing speakers since they are an extension of your speakers. the acoustic result will be better and you won't have to turn them up too loud.


EDIT.

I dont have a subwoofer in my system because i believe it degrades the sound quality of a home theater system.Subs are only useful for making non musical noises that you feel rather than hear. If you have 2 good speakers that go down to say 40HZ that is low enough .If they are controlled by a good power amp. then you will get low bass and still feel it .For a sub to produce a 20 HZ note ,you need a room 56 feet long to hear (feel) one cycle because that is the length of one note.To hear(feel) a half cycle you need a room 28 feet long.which wont sound as good as one cycle. If the room is less than 28 feet long you only hear a part of the wave which bounces around the room causing standing waves an resonances which is very uncomfortabe to hear.And it degrades the good sound coming from your other speakers.

Answer 4

it depends which sub woofer it is if its a new sub like a velodyne etc it is active which means it has an amplifier inside it so it powers it self so it wont touch the power going to your speakers. Now if its a sub that is powered by your receiver it will decrease the power going to your speakers,

which subwoofer are you planning to use?

Answer 5

i have 2 18" kicker solox in my yukon. it was a demo vehicle. now its my daily driver. each of my subs are requiring 4 cubic ft of airspace. taking up the the back of my truck. powered by zapco. if your looking to set up like this your going to be out a hell of alot more than you imagined before you drop a sub into your truck. your going to be out more than you ever thought on preparing your vehicle for a crazy amount of vibration. and being able to give your amp's the 14.4 volts that they require. i have a 4 batteries. 2 alretnators. no ac but after its all dont you wont regret the expression on the face of the old couple infront of you at a red light on a sunday afternoon