FAST, LOW RESONANCE subwoofer to go with Dynaudio Confidence 5?

ATC C1 Sub Mk2.

Hi,

 

I own a pair of Confidence 5. I got them 15 years ago second hand. I also love them very much.

My friend also owns a pair but they really sound different in his room. He drives them with Nagra PMA monoblocs (200 Watts in 8 Ohms)  and because of his room and speaker placement, they really lack the bass.

I drive them with a Hegel H30 amplifier (675W in 4ohms with a very high damping factor). I have more placement option than my friend has and the bass is sometimes abyssal… of course the room has a lot to do with it but nevertheless this speaker can really go down low, not with lots of power but you certainly can feel the potential of that bass, like you said, being so fast and controlled.

Not long ago, I purchased a set of Isoacoustics Gaia 2 isolation feet to decouple the speakers from my wooden floor and to control resonances in the speaker. The result is amazing; yes I lost some of the deep bass pleasure (created by the room/speaker interaction) but I gained so much in reproduction fidelity - I got closer to the full extent of what this wonderful speaker is capable of in terms of timber, upper bass and lower midrange impact (without the disturbancy that blurred their reproduction). Soundstage, image, focus, details like echos never heard before….

 

I was going to purchase a sub in a near future but those Gaias will precipitate this addition soon.

I am considering 2 options: REL S510 and Dynaudio sub 6.

Communicating with REL about my system and room size, they suggested to pair my Confidence with 2 sub S510. Unfortunately, I don’t have space for two subs so I would have to settle for one. According to them they would be a good match for my room size (15’ x 30’ with some openings on other rooms) and the speed of the Confidence. The other thing I like about it is its high impedance input giving me the ability to connect it in parallel with my speakers.

The Dyn Sub 6 seems to be a very good option (quality, speed and very very deep bass ) but I don’t like the idea of purchasing long balanced cables going from my preamp to the sub and back to the poweramp adding processing to the signal, to take advantage of its DSP… I could also connect it with the sub out of my preamp but I am eventually considering getting rid of this preamp to go full digital with a dac that includes volume control…

So, not shure a 100% but I think I would go for the REL S510 sometime in 2024.

 

Communicate with  REL via email, give them a quick overview of your system and room size and they will advise for your best option.

 

Hope this helped.

 

Francois

"Are there any other subwoofers that would go well with them? apparently Dyn’s own sub such as sub 3 and sub 6 would be a good bet but I just want to see if anyone knows another option, thanks all."

Hello qyy920,

I believe a good solution for any room and pair of main speakers would be to utilize at least a pair of subs in your room. You could use a pair of Dyn’s own Sub 3 ($1,799 each=$3,598/pr.), Sub 6 ($2,799 each=$5,598/pr.) or a pair of REL T9/I subs ($1,099 each/$2,198/pr.) but I would suggest a pair of SVS PB-1000 subs (currently on sale for half price at $499 each/$950/pr.) will perform just as well at a bargain price. Here’s a link to these subs:

https://www.svsound.com/products/sb-1000#tab-2

Despite the bargain price these are very good quality subs that have all the necessary controls such as line level and speaker level hookup options along with controls for volume, crossover frequency and continually variable phase settings. Like the other subs, you have the option of using the built in high pass filter to restrict the bass output of your main Confidence 5 speakers or running them full-range and supplementing their bass with the pair of subs below a specified bass frequency through low bass filters on the subs.
I wanted to make you aware of these bargain priced subs but I’d also like to know more about your room and system to better tailor my advice to you like:
1. Your other system components by brand and model number.
2. Your exact room dimensions.
3.  Where your main speakers and gear are located, along the long or short wall.


Thanks,
Tim

Isolate the subwoofer! Less mechanical feedback. Lower cabinet resonance. Better bass slam and better detail and articulation. Problem solved! 🤗

Idk, I think with that caliber of speaker you might consider a dual sub setup using JL Audio F112 version 2 to get really impactful, deep and quick bass. 

good advice! 4 is probably too much for it but I'm happy to start with 2 subs. 

The REL T7i is a home theater sub $.  Boom! Boom!  You get what you pay for. Their S/3 or S/5 will do the trick but $$$.

I didn't know that! Apparently a lot of people just praises how good the Rel subs are in an 2.1 system and for music listening but I wasn't aware such difference between the real models. Ok I'll start looking around for them

Hi, TBI subwoofers are an excellent choice for clean fast bass. I used to use a pair in stereo with Reference 3A mm De Capo's and they just made my speakers sound like they had deeper and room filling bass!           The subs disappeared and created an organic sound that you have to hear!              I used the speaker taps on my amp so the sound would be consistent. I sold the De Capo's and used Sonist Concerto 2's and the same magic happened.      But when I traded up to Concerto 4's that go down to the mid 20's, I had to sell the subs to finance the purchase and still wonder how those subs would sound with them. I just recently retired and cannot afford any more gear but I am VERY happy with my system.

State of the Art bass costs only about $3k. Or less. This does however call for a little outside the box thinking and learning to understand that four of just about any sub beats one of just about any sub. Hands down. No contest.

The REL T7i is a home theater sub $.  Boom! Boom!  You get what you pay for. Their S/3 or S/5 will do the trick but $$$.