Opinion on adding subwoofer to my Stereo Setup

Audio 6000N Play

mantu

New Member
Joined
Mar 20, 2010
Messages
16
Points
3
Location
Navi Mumbai
A brief of my Stereo Setup first. I have a dedicated room of 12 ft X 12 ft (there are few other stuff like single bed, book shelf etc). The chain is, NUC (Roon Core) -> DigiOne Signature -> Chord Qutest -> Karan Acoustics KA I 180 MK2 -> Spendor SA1. I bought these speakers in 2014 and since then it has really served me well. I really like these speakers and feel that for my room size they are perfect. Though, I do miss Bass a bit. From last few weeks, I have been researching about adding Subwoofers into my setup. I have also gone through few threads in this Forum, where people are seeing very good results with adding Subwoofer into their Stereo Setup with the similar kind of Speakers. I came across Graham Audio Sub 3 (Passive Subwoofers) which matches beautifully with Graham Audio LS 3/5 and LS 3/5 A speakers. My SA1 share the same design as these speakers. I think, these Sub should match with my speakers as well.

I seek opinion and advice from Audio Gurus here, whether this would be right thing to do.

Following are some of the links of the articles I referred.

Spendor SA1

Graham Audio Sub 3

 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
1,824
Points
113
Location
Chennai
it is a passive subwoofer which means you need to add a monoblock amplifier with inbuilt DSP to control crossover, slope and attenuation.
For your current need, an active subwoofer is a better solution, and one subwoofer should be enough.

Depending on the design, you can either take low level output from your chute or the record output from the amp ( which I think is just a paralleled output of the input section) or high level outputs from the amplifier to the active subwoofer inputs.
Crossover, attenuation etc can be set in the sub.

Some REL models are well received for music integration, there is also an Elac model with bluetooth-enabled auto room calibration in built.

Overall, I suggest taking the active route.

I am personally using a Wharfedale active sub with my bookshelves.
 

mantu

New Member
Joined
Mar 20, 2010
Messages
16
Points
3
Location
Navi Mumbai
Thank you for your advice. Apparently, this subwoofer is to be connected with the existing Amp and sits in between Amp and Speakers. It has a crossover and it passes signal above 100Hz to the speakers.

But I agree, that active Sub is more successful addition to the Stereo chain.
 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
1,824
Points
113
Location
Chennai
Thank you for your advice. Apparently, this subwoofer is to be connected with the existing Amp and sits in between Amp and Speakers. It has a crossover and it passes signal above 100Hz to the speakers.
That is good but to be fixed at 100hz could be a handicap for your setup. The crossover point should be adjustable from @atleast 45/50hz.
 

Beast_of_burden

Active Member
Joined
Jun 14, 2011
Messages
284
Points
43
Location
Bangalore
A brief of my Stereo Setup first. I have a dedicated room of 12 ft X 12 ft (there are few other stuff like single bed, book shelf etc). The chain is, NUC (Roon Core) -> DigiOne Signature -> Chord Qutest -> Karan Acoustics KA I 180 MK2 -> Spendor SA1. I bought these speakers in 2014 and since then it has really served me well. I really like these speakers and feel that for my room size they are perfect. Though, I do miss Bass a bit. From last few weeks, I have been researching about adding Subwoofers into my setup. I have also gone through few threads in this Forum, where people are seeing very good results with adding Subwoofer into their Stereo Setup with the similar kind of Speakers. I came across Graham Audio Sub 3 (Passive Subwoofers) which matches beautifully with Graham Audio LS 3/5 and LS 3/5 A speakers. My SA1 share the same design as these speakers. I think, these Sub should match with my speakers as well.

I seek opinion and advice from Audio Gurus here, whether this would be right thing to do.

Following are some of the links of the articles I referred.

Spendor SA1

Graham Audio Sub 3

Those are bookshelf speakers with excellent pedigree. If your amp is not differential output or monoblocks, you should try a REL T sub. This sub is subtle and prioritises integration over amplitude and extension. Easy to integrate to bookshelf speakers and to your room.

Based on forum reviews, the ML 800 with DSP eq or Rhythmik should also be worthy of consideration.
 

sidvee

Well-Known Member
Joined
May 14, 2007
Messages
2,972
Points
113
Location
Hyderabad
A brief of my Stereo Setup first. I have a dedicated room of 12 ft X 12 ft (there are few other stuff like single bed, book shelf etc). The chain is, NUC (Roon Core) -> DigiOne Signature -> Chord Qutest -> Karan Acoustics KA I 180 MK2 -> Spendor SA1. I bought these speakers in 2014 and since then it has really served me well. I really like these speakers and feel that for my room size they are perfect. Though, I do miss Bass a bit. From last few weeks, I have been researching about adding Subwoofers into my setup. I have also gone through few threads in this Forum, where people are seeing very good results with adding Subwoofer into their Stereo Setup with the similar kind of Speakers. I came across Graham Audio Sub 3 (Passive Subwoofers) which matches beautifully with Graham Audio LS 3/5 and LS 3/5 A speakers. My SA1 share the same design as these speakers. I think, these Sub should match with my speakers as well.

I seek opinion and advice from Audio Gurus here, whether this would be right thing to do.

Following are some of the links of the articles I referred.

Spendor SA1

Graham Audio Sub 3

This sub is showing a new pricing of 1.8lac (in uk), and as I know pricing of graham in India it is likely to be in the 2.5-2.75 lac range. IMO it is absolutely not worth it regardless of what the manufacturer claims. I am running my spendor classic 3/5 with a single rythmik l12 through the rca connections (2nd output of my backert preamp) and it is integrating wonderfully. You can also check sealed SVS subs and REL as well as suggested by others. I preferred the rythmik due to direct servo design.
Cheers,
Sid
 

mantu

New Member
Joined
Mar 20, 2010
Messages
16
Points
3
Location
Navi Mumbai
You are right about the pricing. Do I need to worry about Tonal quality matching and all in adding Active Subs?
 

sidvee

Well-Known Member
Joined
May 14, 2007
Messages
2,972
Points
113
Location
Hyderabad
You are right about the pricing. Do I need to worry about Tonal quality matching and all in adding Active Subs?
This should not be an issue AFAIK. More important will be blending the subwoofer to your mains so that there are no nasty frequency peaks and the transition is smooth. If you have the independence of locating your sub. where it sounds best for music (usually at the ctr. of a wall dimension) rather than at a particular fixed point, then with the help of the sub. xover/volume control/phase, this can be accomplished quite well.
Cheers,
Sid
 

mantu

New Member
Joined
Mar 20, 2010
Messages
16
Points
3
Location
Navi Mumbai
This should not be an issue AFAIK. More important will be blending the subwoofer to your mains so that there are no nasty frequency peaks and the transition is smooth. If you have the independence of locating your sub. where it sounds best for music (usually at the ctr. of a wall dimension) rather than at a particular fixed point, then with the help of the sub. xover/volume control/phase, this can be accomplished quite well.
Cheers,
Sid
Thanks. Luckily I have the flexibility to keep Sub where I want in the room. This helps.
 

ssf

Well-Known Member
Joined
Aug 18, 2010
Messages
1,285
Points
113
Location
Mangalore
I have a query. How does one set the delay in a stereo setup if the sub is placed anywhere in the room. An AVR does that through it's built in software like Audyssey etc.
 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
1,824
Points
113
Location
Chennai
I have a query. How does one set the delay in a stereo setup if the sub is placed anywhere in the room. An AVR does that through it's built in software like Audyssey etc.
The only way to kind of delay is by adjusting the phase on the subwoofer if there is no extensive DSP options. Most have fixed 0/180 while some offer you to vary between the two phases.
 

rikhav

Well-Known Member
Joined
Mar 27, 2008
Messages
2,554
Points
113
I am no expert with subs either in HT or stereo but whole heartedly agree with what others have Suggested.

2.75 lacs is bit too much and even otherwise you will be better off with an active sub. Below 100 hz, matching tonal quality will be not very important and more important would be integration of sub and speakers
 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
1,824
Points
113
Location
Chennai
Below 100 hz, matching tonal quality will be not very important and more important would be integration of sub and speakers
It does impact the lower mids and on little more sensitive mains, the mids also. But can be well integrated with a mix of positioning, xover point and attenuation. The biggest benefit in my opinion of adding a sub is to get low end details even at lower volumes which can sometimes be missed out.
 

Hari Iyer

Well-Known Member
Joined
Feb 8, 2010
Messages
3,130
Points
113
Location
Mumbai
I benefited using a H-frame OB sub mated with my OB mains. One thing I noticed with my sub design was keeping the crossover frequency below 80 Hz had much punch and deep / tight bass and better integration. My main OB goes till around 100 Hz with the Ahuja 12" woofer. Also I needed phase reversal on the SUB to be in- phase.
 

mantu

New Member
Joined
Mar 20, 2010
Messages
16
Points
3
Location
Navi Mumbai
Thanks everyone for putting up your suggestions. For my room size (12 ft x 12 ft), would one Sub of 8” be enough or I should add 2 subs?
 

rikhav

Well-Known Member
Joined
Mar 27, 2008
Messages
2,554
Points
113
Thanks everyone for putting up your suggestions. For my room size (12 ft x 12 ft), would one Sub of 8” be enough or I should add 2 subs?
Definitely try with one.
Experiment with it as much as possible.
And then if you want you can always add a seocnd one.
Also study the options how you can connect dual subs before commiting for a second one.

Question for others,
when we would use dual subs do we have only one channel per sub or both channels for both subs, probably by daisy chaining both subs?
 

Nitin K

Well-Known Member
Joined
Nov 23, 2018
Messages
1,332
Points
113
Location
India
Thanks everyone for putting up your suggestions. For my room size (12 ft x 12 ft), would one Sub of 8” be enough or I should add 2 subs?
I would suggest one 12 inch active sealed sub around 300 to 500 watts rms
 
Top