Dual vs Single

[liverpool_for_life]

What you hear is what you get!!

Indeed. However, some of us are motivated to understand why we hear what we hear and see if it can be made better.

 

[Bloom@83]

Reminds me of a creative cartoon of mad angles. I hope there is a one size fits all solution here but this is just sheer cumbersome minute audiophille level or personal preference level tweak. What you hear is what you get!!

For some , the fun is in the tweaking itself.
Different people , different strokes.

 

[square_wave]

I remember the discussions when you went into 2 subwoofers from your earlier setup. I think you have a problem of something really big blocking your view (hearing) of the finer nuances you are looking for. I faintly remember discussing this in your older thread. I can see that you have put the 2 subs for sale now. Honestly, I think this is a vicious circle. Solve the real problem. Talk to a pro. Tell them your expectations and show them your room. The good ones will tell you what is possible and what / where you need to spend. They do this for a living.

Almost all the time, dual subs should give you better quality bass in a reasonably sized room.

 

[Love4sound]

Talk to a pro. Tell them your expectations and show them your room. The good ones will tell you what is possible and what / where you need to spend. They do this for a living.

Almost all the time, dual subs should give you better quality bass in a reasonably sized room.

Thanks for the suggestions. I actually found out all the issues with various tests, listening sessions and measurements. My room is small and has very poor decay time. Has a nasty room node at 50hz. My LCR has collapsed due to a big Tv, a slab above LCR,SBIR issues and phase issues.I also know the solution. Need to remove the tv, treat the front wall and slab along with corners and ceiling. Will be a tedious task and cost a bomb. I am not going for it cause I will be relocating for sure in another 4-5 years. Already the room is a mess due to wiring, drilling works which is going to cost a lot to prepare the room while vacating. I now know all subwoofers are going to have the same issues. Luckily I don’t have major dips and room response is flat 20-80 which is the major LFE region for movies so my aim here is to go for a single 15inch sealed sub. Dual subs sound so much better but it improved the bass where the single was performing and didn’t improve where the bass failed with a single sub. So may be a single 15 inch sealed rythmik sub will give 80-90% of dual LV12F subs.First time I am going for a blind buy as I was not able to get the rythmik F series subwoofer for home demo. Dealers don’t have it and the Chennai FM’s who have it also are not willing to give it for home demo,So I need to take the risk and find out

 

[sud98]

One suggestion, probably spend on a smaller sub for now and if you are shifting in 4-5 years, invest in a second one. You go for a 12 inch sub too and it will be enough based on the volumes you listen to.

 

[Love4sound]

One suggestion, probably spend on a smaller sub for now and if you are shifting in 4-5 years, invest in a second one. You go for a 12 inch sub too and it will be enough based on the volumes you listen to.

I have decided to go for a sealed sub. Being used to many 12inch ported subs and one 12 inch sealed sub in my set up I am thinking of going for E15 now. One sub is sold and waiting for the other to be sold. Till then will be using single LV12F only. Not going to invest in another sub till this is sold.

 

[DB1989]

I have decided to go for a sealed sub. Being used to many 12inch ported subs and one 12 inch sealed sub in my set up I am thinking of going for E15 now. One sub is sold and waiting for the other to be sold. Till then will be using single LV12F only. Not going to invest in another sub till this is sold.

Go for the F15 if space is not a constraint. It's the same as the E15 but in a more substantial cabinet. And that added displacement helps.

 

[Love4sound]

Go for the F15 if space is not a constraint.

F15 and E15 have the same driver and Amp. E15 1 inch depth and 2 inch less then F15,so the performance should be similar.Price also just 1k difference. The hp variant has the option to choose 1000watts RMS amp. I have space even for the FVX15.

 

[DB1989]

F15 and E15 have the same driver and Amp. E15 1 inch depth and 2 inch less then F15,so the performance should be similar.Price also just 1k difference. The hp variant has the option to choose 1000watts RMS amp. I have space even for the FVX15.

Yes. I have the HP2 variant of the E15 which has the HX1000XLR3 Amp which has 900W (not 1000 though the name suggests it) amp and PEQ. Initially i thought the F15HP2 would be a bit too big so i went for the E15HP2.

 

[Love4sound]

Yes. I have the HP2 variant of the E15 which has the HX1000XLR3 Amp which has 900W (not 1000 though the name suggests it) amp and PEQ. Initially i thought the F15HP2 would be a bit too big so i went for the E15HP2.

Oh great. Guess your using it in a big space. My room is just 10*11 and the the 600 watts should be more then enough. Also I don’t crank the volume high and watch at very low volume levels. I think apart from power and head room both 600 and 900 version should perform the same interms of quality of the bass. How good is it for movies and music?

 

[drlowmu]

Really you have to hear the 15"-er in the room and can feel the difference. Size doesn't matter for the sub typically the settings and placements will make it to work.

Same applied to my Altec A5 setup with 15"-er woofer plus 8cell horn tweeter, which was tamed to make it sing in 10ft width room.

Difference of hearing the low frequencies with 10/12 against 15"-er is phenomenal. The ease of producing LF is very well higher.

Absolutely. I use a ALTEC 515B in a A7 VOTT enclosure ( A7-8 ).

There is NO going back to a twelve, that is for sure.

There is nothing like a really well-executed A7-8.

Likely only a couple individuals in audio have ever even experienced this combination.

The front horn of the 825 enclosure, acting upon a ALTEC 15 inch cone, and also compression loading of that 15 inch cone ( a six inch slot ) ... can be lovely !!!

A compression loaded 802D and a compression loaded 515B........ all properly executed, finally done properly. `Fabulous.

Results of the 515B driver itself, ONCE it is well wired, and powered, is awesome.

I use 12+12+14 AWG Mil Spec speaker leads per polarity, m22759/11 and 9.52 feet long. Never been bettered, in 7 different installs.

No "subwoofers" ever wanted by me........... at all.

Simple highest - quality two way.

What a listening experience it is.

Zero negative feedback tube amp with only two 6 Ohm DCR filter chokes.... Twelve Ohms total ....... Choke DCR. LOL. Heaven.

Nothing in audio .......is ever quite like this overall, listening-wise.

Jeff

 

[ravindrads]

Dear Fm's

I just wanted to know how many here have used dual subs and gone back to a single sub? Been 8 months i have been using dual subs. Few times i accidentally watched some contents with a single sub cause i would have forgotten to turn on the other sub or my daughter would have unplugged it. Didn't notice much change and noticed some area of the bass being smooth and tight. My room is very small and its just 10*11 so technically doesnt need a dual subwoofer. I also verified by measurements that there isn't much difference with dual subs apart from a 5-7db boost which can also be achieved by increasing the gain of the single sub or a better and powerful single sub-woofer. There is a dip in 105-110 with a single sub which shouldn't have any impact with bass. I have shared the pure direct and EQ graphs. In both graphs blue is the dual sub response and red,orange is the single sub response. I am in a huge dilemma to go back to a single lv12f or sell both and get a better single sub-woofer.

Mine is also about the same size room and I use 2 x 8 inch. One at the front and one I have it behind my seat. It's sounding nice. But I am still experimenting the positions. So you can also chance positions and check the difference

 

[ravindrads]

Mine is also about the same size room and I use 2 x 8 inch. One at the front and one I have it behind my seat. It's sounding nice. But I am still experimenting the positions. So you can also chance positions and check the difference

Also bass traps could help but need some expert advice for right placement

 

[Love4sound]

Mine is also about the same size room and I use 2 x 8 inch. One at the front and one I have it behind my seat. It's sounding nice. But I am still experimenting the positions. So you can also chance positions and check the difference

I have tried all the possible positions in my room. I did manage to integrate them and duals sound really good which I have also mentioned in the thread. But in terms of spl based on frequency response I don’t need duals in my room and a bigger and better single sub may sound better.

Also bass traps could help but need some expert advice for right placement

Yes I am working on that as well

 

[ravindrads]

I have tried all the possible positions in my room. I did manage to integrate them and duals sound really good which I have also mentioned in the thread. But in terms of spl based on frequency response I don’t need duals in my room and a bigger and better single sub may sound better.

Yes I am working on that as well

Hmm in that case single sub could really help and quite sufficient as well.. All the best bro.

 

[Love4sound]

So been using a single sub for more than a month and quite happy. The dynamic and attacking bass was missing at many scenes but I had improvements with integration and kind of had a soft sound stage which was comfortable for my ears. For sure dual was better no doubt but for my ears and listening the single was comfortable do note I mentioned comfortable and not better. So single was convenient for me. Got a good buyer for one sub. Rest all low ballers and asking for 50-60k. So I decided to just keep this sub. Ordered a fvx12 and will use it as a single sub for some time and then switch to duals. If LV12F blends well with fvx12 I will switch back to duals. If not blending well and no major improvements with mixed duals I will just pack the sub.May be keep it idle just for show in the room and after 3-4 years I’ll sell it to the low ballers for 50-60k. I’ll atleast have the satisfaction of selling a 4 year old sub for 50-60k

 

[rainbowsong2000]

So been using a single sub for more than a month and quite happy. The dynamic and attacking bass was missing at many scenes but I had improvements with integration and kind of had a soft sound stage which was comfortable for my ears. For sure dual was better no doubt but for my ears and listening the single was comfortable do note I mentioned comfortable and not better. So single was convenient for me. Got a good buyer for one sub. Rest all low ballers and asking for 50-60k. So I decided to just keep this sub. Ordered a fvx12 and will use it as a single sub for some time and then switch to duals. If LV12F blends well with fvx12 I will switch back to duals. If not blending well and no major improvements with mixed duals I will just pack the sub.May be keep it idle just for show in the room and after 3-4 years I’ll sell it to the low ballers for 50-60k. I’ll atleast have the satisfaction of selling a 4 year old sub for 50-60k

You can give to me for next 4 years and sell it

 

[k-pad]

You can give to me for next 4 years and sell it

Haha, what does your lease agreement and offer look like @rainbowsong2000 ?
I might want to match/better it?

Terms being: We lease the sub for 4 years for a particular sum, and return to L4S at a preset rate.

 

[Love4sound]

Bang,back to duals and no going back to a single sub ever again.Mixed duals gave excellent results. And also LV12F is such an amazing sub and faired well against fvx12 interms of punch and dynamics. Fvx12 is more accurate, smooth and has better transients. Used fvx12 for 2 days in a single set up just to analyse its performance against LV12F.

 

[Love4sound]

Well been more than a month I am back to a single sub again. Sold the LV12F and waiting for another fvx12 to arrive. Again dual subs any time.