dual or single driver sub

jaya000 · 21st December 2006, 04:09 AM

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.

Jexx · 22nd December 2006, 03:52 PM

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.

djQUAN · 22nd December 2006, 03:59 PM

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.....

Ihrcke04 · 23rd December 2006, 12:43 AM

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?

hifiger · 23rd December 2006, 05:28 AM

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.

jaya000 · 23rd December 2006, 10:31 AM

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.

djdowdell · 25th December 2006, 08:54 AM

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.

jaya000 · 25th December 2006, 06:10 PM

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.

hifiger · 26th December 2006, 06:22 PM

What subs are you considering?

Hayden · 1st January 2007, 11:21 AM

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?

21st December 2006, 04:09 AM	#1
jaya000 diyAudio Member Join Date: Dec 2006	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.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Aleph 5 single PS or dual?	Leeuwarden	Pass Labs	20	9th September 2012 05:09 PM
Dual woofers in OB v single	Stuey	Multi-Way	77	14th March 2012 01:41 AM
Single or dual differential?	lumanauw	Solid State	346	29th November 2007 01:37 AM
Single Ended, Single driver: In-room distortion measurements	Gerrit Boers	Full Range	4	27th November 2007 08:12 AM
single or dual mids	mp006ltk	Multi-Way	1	19th December 2004 04:05 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

22nd December 2006, 03:52 PM	#2
Jexx diyAudio Member Join Date: Jun 2006	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.

22nd December 2006, 03:59 PM	#3
djQUAN diyAudio Member Join Date: May 2004 Location: manila	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.....

23rd December 2006, 12:43 AM	#4
Ihrcke04 diyAudio Member Join Date: Oct 2006	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?

23rd December 2006, 05:28 AM	#5
hifiger diyAudio Member Join Date: Aug 2006	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.

23rd December 2006, 10:31 AM	#6
jaya000 diyAudio Member Join Date: Dec 2006	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.

25th December 2006, 08:54 AM	#7
djdowdell diyAudio Member Join Date: Dec 2006	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.

26th December 2006, 06:22 PM	#9
hifiger diyAudio Member Join Date: Aug 2006	What subs are you considering?

1st January 2007, 11:21 AM	#10
Hayden diyAudio Member Join Date: Aug 2004 Location: Mackay Australia	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?