Author Topic: 1 woofer or 2?  (Read 8272 times)

Offline sevenz

  • Trade Count: (+16)
  • Full Member
  • Posts: 2285
  • home theatre lover :D
Re: 1 woofer or 2?
« Reply #15 on: December 31, 2018, 02:00 »
Now comes a twist on the question.
1 big sub or 2 smaller subs?

Not a straightforward answer.  :)
 
Why I say that is because, if your intended bigger sub is a 15" and your 2 intended smaller subs mean many size lower (e.g. 8" size) instead of one size lower (like 12" size), 2x 8" subs might not be better than 1x good 15" sub. One reason is the physical limitation of small drivers like 8" to produce low bass n rumble. So no matter how many 8" subs u add to your setup, if it can't produce any useful output for lowbass, it just can't produce any. So I would assume u are talking about 1 size lower here :) E.g. 1x15" compared to 2x 12". If that's the case, in most cases, I would go for 2x 12" as it would smoothen the bass across freq and give the benefits that was mentioned earlier

But this is also assuming that the quality n distortion of the 2 smaller subs is "on par" with the bigger sub. Ie. 2x 12" rythmik F12 VS 1x 15" rythmik F15. If it's 1x 15" rythmik F15 VS 2x 12" subs from mass market brands not renowned for subs (with high distortion), having 2 subs might not give u better bass quality though the room FR might look better.

And lastly, the calibration to integrate 2 subs is a BIG factor. Multiple subs setup which are not placed, calibrated and integrated the right way, will sound way worse than 1 sub placed and calibrated well.

It would help greatly to indicate the sub models and size u are looking at here. And your room size. So that we can help advise better.
« Last Edit: December 31, 2018, 02:12 by sevenz »

Offline desray

  • Global Moderator
  • Trade Count: (+4)
  • Full Member
  • *
  • Posts: 19143
  • Bring the "Cinema experience" back home...
1 woofer or 2?
« Reply #16 on: December 31, 2018, 06:20 »
Now comes a twist on the question.
1 big sub or 2 smaller subs?

Short answer. Whenever possible (so long as space is not a constraint), go for dual subwoofer implementation and in this case, 2 smaller “identical brand” subwoofers, each at a different location preferably symmetrically positioned to help smoothen and achieve a more uniform bass response throughout the listening area. Loudness of the subwoofers will be the combined sum of the 2 subwoofers usually in the range of 2 - 3db gain. But the key benefits of going dual subwoofer are about the reasons that I have just mentioned.

Going anything beyond 2 like 3 or 4 subwoofers is always welcome but it will depend on your room size and layout. Law of diminishing returns sets in and the benefits can become subtle. But if space is never the issue. Placing 4, NOT 3 will be the preferred choice here. Threes a crowd.


Sent from my iPhone using Tapatalk
« Last Edit: December 31, 2018, 06:25 by desray »

Offline WuffRuff

  • Trade Count: (0)
  • Snr Member
  • Posts: 93
Re: 1 woofer or 2?
« Reply #17 on: December 31, 2018, 07:16 »


"do you mean, placing subs behind their couch?"

Yup.

Offline cleadett

  • Trade Count: (0)
  • Full Member
  • Posts: 149
Re: 1 woofer or 2?
« Reply #18 on: December 31, 2018, 17:45 »
"do you mean, placing subs behind their couch?"

Yup.

You can try it... not happy then re-position.. placed it in-front
 ;)

Offline sevenz

  • Trade Count: (+16)
  • Full Member
  • Posts: 2285
  • home theatre lover :D
Re: 1 woofer or 2?
« Reply #19 on: December 31, 2018, 23:15 »
"do you mean, placing subs behind their couch?"

Yup.

That's a common practice to get tactile at a nearfield placement. Nothing wrong.

As what cleadett said, try out the various placements and feel (and measure) for yourself how the bass feels differently. Its a enjoyable process to discover how each tweak affects your bass :)

Offline wcseow

  • Trade Count: (0)
  • Full Member
  • Posts: 417
Re: 1 woofer or 2?
« Reply #20 on: January 18, 2019, 23:11 »
Let me know if I am doing something inappropriate as a bit apprehensive about putting up a new thread on something similar.

I am buying a new set of FLC and sub as will be redeploying my current Living Room Missions to my solo den. Below is a pic of the current setup, please bear with the quality as I did a panaromic shoot.

Listening area size is 3.6m x 2.4m, ceiling is 3m

My current sub is Mission MS 150, 8" which m thinking to move it to my solo den.

1. Thinking of buying 2 sub (8" or 10") or 1 sub (10" or 12").

2. If buying 2 sub, the second sub will probably have to be behind the sofa . Cable will probably follow the  current trunking which means will be about 12m long. Any issue with this length?

3. I understand the point on bass specialist brands. But I guess one can gather from my purchases, I tend to go for "budget?" like Missions Q Acoustics, Elac etc...:)

Thanks in advance

« Last Edit: January 18, 2019, 23:21 by wcseow »

Offline rayleh

  • Trade Count: (0)
  • Full Member
  • Posts: 755
Re: 1 woofer or 2?
« Reply #21 on: January 19, 2019, 09:00 »
I will go for 2 smaller subs if possible. It really makes a difference.

Offline wcseow

  • Trade Count: (0)
  • Full Member
  • Posts: 417
Re: 1 woofer or 2?
« Reply #22 on: January 19, 2019, 09:17 »
I will go for 2 smaller subs if possible. It really makes a difference.

Will 2x8" be a good start?
and is a 12m cable an issue?

Have not really heard a 2 sub setup, wondering will  my neighbours annoyed. :)

Offline Jag

  • Global Moderator
  • Trade Count: (+2)
  • Full Member
  • *
  • Posts: 10762
Re: 1 woofer or 2?
« Reply #23 on: January 19, 2019, 13:26 »
Turn down the volume of both subs then.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline rayleh

  • Trade Count: (0)
  • Full Member
  • Posts: 755
Re: 1 woofer or 2?
« Reply #24 on: January 19, 2019, 13:36 »
You will definitely love the 2 subs set up. If possible try to go for the biggest subs you can afford and will fit into your space. Worry if they are too loud, you can always turn down the gain like what Jag mentioned.
« Last Edit: January 19, 2019, 13:46 by rayleh »

Offline rayleh

  • Trade Count: (0)
  • Full Member
  • Posts: 755
Re: 1 woofer or 2?
« Reply #25 on: January 19, 2019, 17:00 »
https://youtu.be/OM_F_8oyJ6k

Watch the video from Subwoofer 101

Offline desray

  • Global Moderator
  • Trade Count: (+4)
  • Full Member
  • *
  • Posts: 19143
  • Bring the "Cinema experience" back home...
Re: 1 woofer or 2?
« Reply #26 on: January 19, 2019, 22:07 »
Will 2x8" be a good start?
and is a 12m cable an issue?

Have not really heard a 2 sub setup, wondering will  my neighbours annoyed. :)

Don't worry, if done right...it is not gonna sound as loud as you think. Calibration by your AVR will take care of it.

Offline wcseow

  • Trade Count: (0)
  • Full Member
  • Posts: 417
Re: 1 woofer or 2?
« Reply #27 on: January 19, 2019, 22:19 »
I guess my options for the 2 subs will be

1. Place each between the fronts and centre. That will mean the subs will be nearer to MLP then the fronts, sort of protruding out. They will only be slightly more than 1m apart, edge to edge. Shorter cable.

2. One front and the other behind the sofa. Long sub cable as it will need to go up the ceiling and fish, like my surrounds. Est 12m long.

I am thinking to start with (1) and see how it sounds. Easy to setup too. But is the placement well have a low chance of improvement?

Thanks

Offline Jag

  • Global Moderator
  • Trade Count: (+2)
  • Full Member
  • *
  • Posts: 10762
Re: 1 woofer or 2?
« Reply #28 on: January 19, 2019, 22:21 »
Try both and see which  works better for you.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline synthesis

  • Trade Count: (0)
  • Full Member
  • Posts: 4771
Re: 1 woofer or 2?
« Reply #29 on: January 19, 2019, 22:27 »
Will 2x8" be a good start?

I would start with good 10" that can go down to ~20hz. What are your candidates?