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Old 21st December 2006, 05:09 AM   #1
jaya000 is offline jaya000  India
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Default dual or single driver sub

I want to make new sub. I want to know whether it is good to use 2x8" or 1x10". Many people say it is better to use two. requires comments & suggestions.
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Old 22nd December 2006, 04:52 PM   #2
Jexx is offline Jexx  United States
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You'll get a 3dB boost with two subs.

But ultimately, it comes down to the box. As such, I really couldn't suggest one or the other as far as sound goes. Space for the subs and box might be more important so you can build the proper box.
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Old 22nd December 2006, 04:59 PM   #3
djQUAN is offline djQUAN  Philippines
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i've heard that two smaller subs are "faster" than one big sub. i.e. better transient response.

well, that has been a while so I'm not sure if it's correct.....
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Old 23rd December 2006, 01:43 AM   #4
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I read on the mtx website that you get 6 db boost from doubling the subs and 3 db from doubling the power. although i have never heard this before....: http://www.mtxaudio.com/Flash2/volume_displacement.cfm

I always heard 3 db but either way its because of volume displacement it really depends on what subs you are looking at and personal preference.

I always liked the sound from 2 subs cause one just dont cut it for me.

So what subs were you looking at, what is your budget?
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Old 23rd December 2006, 06:28 AM   #5
hifiger is offline hifiger  Canada
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It is a 3db SENSETIVITY gain when you double the drivers. It is a 3db spl gain when you double the power. (quarter space)
The initial sensetivity of the drivers must be taken into account. If you have a 10" sub that has a sensetivity of 85db @1w1m, and two 8" subs with sensetivities of 82db @1w1m, then there is a total sensitivity of 85db @1w1m for either configurations. If the eight inch subs can take say 150watts rms each this means that the 10 inch sub would need an rms power handling of 300watts rms to have roughly the same spl capacity. Keep in mind that at the peaks in the music if the subs are reaching their xmax, or even xmech, they will sound bad or worse, you can blow them apart.....

So you need subs with an xmax that can support the power you want to feed it, while taking the box into consideration as this will also be an important factor.
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Old 23rd December 2006, 11:31 AM   #6
jaya000 is offline jaya000  India
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hi hifiger!
Very nice comments. This is the info what i was looking for. when using dual sub the bass is nice as told to me by my many friends. It was normal reply i got from many. But the above was quite explanatory.
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Old 25th December 2006, 09:54 AM   #7
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I think there are a few questions I want to ask you before I make a comment as I am an installer and competitor. Are you looking for sound quality or sound pressure? What type of vehicle are you using?(Like a hatchback, sedan, truck, etc.) What type of music? Where are you placing the subs? ( In the rear or the front?) I know hifiger (spelling?) Gave you a technical answer but I want to see if I can help you get the most out of your listening experience.
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Old 25th December 2006, 07:10 PM   #8
jaya000 is offline jaya000  India
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Thanks djdowdell!


Quote:
Are you looking for sound quality or sound pressure?
Guide me how can i get more pressure or better sound quality. I can build both type & see on long run testing which is better for me.

Quote:
What type of vehicle are you using?
Hatchback. Fiat Palio


Quote:
What type of music?
Normally cinema music with vocal


Quote:
Where are you placing the subs?
In the dicky or u might call at the back where we put luggage.
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Old 26th December 2006, 07:22 PM   #9
hifiger is offline hifiger  Canada
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What subs are you considering?
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Old 1st January 2007, 12:21 PM   #10
Hayden is offline Hayden  Australia
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Man theory is usually correct but there is nothing better than practice
Wouldn’t the 2 8” subs be louder? More cone area and 2 coils driving the sound?
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