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February 11, 2019, 08:10 AM #1
- Join Date
- Jun 2018
- Posts
- 16
Adding subwoofers to the Duo Omega
Ok guys - would like to hear from anyone who's done this.
So - yeah - the sub225 is ok - but lags behind the horn section of the speakers.
Is it worth adding a single or a pair of subwoofers to the mix to enhance the listening experience?
Would love to hear from someone who has added subwoofers to their horns.
Currently contenders are REL S5 SHO or JL Fathom f112v2.
Go one to start - two later perhaps.
When you added your subwoofer did you stop using the sub225 units?
If you went Rel - what connection method worked best for you?
Did you upgrade the speaker/connection cable to the subwoofer?
Did you need an external crossover to make things sound good?
Where did you place your subwoofer/s?
I'd appreciate any real world experience, not just with Duo Omega, but with any of the Avantgarde speakers current and past.
Thanks again.
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February 11, 2019, 01:44 PM #2
Re: Adding subwoofers to the Duo Omega
Haygeebaby,
While I don't own your brand of speakers I did add Rel G1's to my stereo system. To optimize them, I used a calibrated USB microphone and an iPad app called AudioTools. Using the Spectral analysis part of that app and a pink noise file I played through my system and monitored with the mike at my listening point, I found the problem that needed to be corrected. There was a bass "suck-out "between 30 and 50 Hz. By that I mean the level of bass in that band was significantly below the level of the rest of the spectrum (which was pretty flat) out to 20KHz. No amount of manipulation of listening spot or room treatments could fix the problem without causing issues elsewhere in the spectrum.
Enter the REL Subs. I positioned them behind my M3's and slightly inboard towards the center of the room. I set the cut-off (internal to the sub) at 50Hz and ran a few measurements at different volume levels until the signal level reached rough parity with the rest of the frequency spectrum. I liked what I heard so that's where I stopped. The beauty of the REL's is that you connect the inputs up to your amp outputs and don't need anything else.
This process is easy for the layman and objectively (illustrated by quantitative data) it works. Hopefully you find this process useful. It would be the same for any speaker / room. If you wanted to be really techie, you could take the same measurements with the subs pointing in different directions 90 degrees apart and in different locations from the rear and side walls. I felt I was at the point of diminishing returns so I quit after I had a reasonably flat spectrum for 15-20,000 Hz
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February 11, 2019, 05:40 PM #3
Re: Adding subwoofers to the Duo Omega
I'm using subs on my AG Duo Mezzo XDs. So no help with using not using the sub225.
I'm still in the playing stage trying things, but I'm currently using the AGs crossover to do a high pass at 50 hz and setting the low pass on the subs at 50.
I've always found running the speaker full range and only adding the sub, so this is a little different this time. Mostly since the speaker and sub use the exact same crossover programing, it seems to be matching up great.
Def a nice addition.Jock
If you have integrity, nothing else matters. If you don't have integrity, nothing else matters.
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House: Naim ND555/2PS, Naim 552, Naim 500, Studer A80/Doshi V3, Magico M2s, 2 Magico Q-Sub 15s, Lumina IC/SC, Shunyata Everest and Omega PCs.
Workshop: Naim ND555/2 PS, VAC Master Pre, VAC Sig 200iQ, Border Patrol pre/power, Avant Garde Duo Mezzo XD, 2 Magico Q-Sub 15s, Shunyata IC/SC, Shunyata Typhon QR/Triton V3/Sigma PCs.
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February 13, 2019, 04:29 AM #4
Re: Adding subwoofers to the Duo Omega
"Jock", seems high for the crossover, but, I guess it is what sounds best, comes to the fore..., not what we believe to be.
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February 13, 2019, 07:33 AM #5
Re: Adding subwoofers to the Duo Omega
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
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heard the large ones twice, pretty nice
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