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OK, loving our 7XRS in walnut but ordered a 8'' sub with Louis. I have had a lot of different subs over the years (M&K, Velodyne ULD-15) and always used the low level method. I can use either the speaker level or line level off the Decware Rachael amp but my question is what are those of you that have subs with your Omega speakers (or any other single driver speaker). I have an Audio Control Richter Scale III that I have used with great success on the Velodyne if needed to EQ the sub. Thoughts? Opinions? Comments? Thank you and happy listening, Chris.
I had been under the impression it ought to be 'amp to sub to speakers ' so the sub could act as a high level filter up to 80 or 100Hz.
The signal to the powered subwoofer is very very low level we are speaking in ohms. The preamplifier is The most accurate signal without question.Call SVS .Velodyne, or any company why would low level sound better ,then you need to put extra speaker wires in the chain and extra connectors coming off the speaker.Think about it the signal has to be sent from the preamplifier First before it even gets to the speaker .Then has to be processed through the Xover network. The original sourse signal without question Is line or high level in pro audio allways daisy chained with multi subwoofers using XLl.My uncle has been in pro audio for many years and I just followed what JL audio said . Remember you are not caring and current like with a speaker wire ,just a low voltage signal to Direct the subwoofers signal. Thst being said buy a good pair for $ 150-250'a very good pair$50 you loose articulation and detail in the bass .i had bunches to compare to .the conductors are beefierAs well as isolation and rf rejection . Just call the companies when in doubt.
One of the reasons Omega speakers are so resolving & detailed is that they do not have tone killing, transparency robbing crossovers (electronics). So while going through the Sub's crossover sounds good on paper, it will diminish the signal quality going to your speakers.I liken any electronics in the signal path to a screen door. If you smash a Tomato through a screen door, Technically Speaking it is still a Tomato once on the other side (but in reality, Not Really the same). Over the years I keep re-discovering that simpler is better, and less is more. The fewer interconnects & nonessential electronics in the signal path the better IMO. I run my Omega 6 Monitors Full Range with a 2 watt Decware Super Zen, they sound great and play plenty loud in a good size room. The Super Zen has tremendous Transparency & Clarity primarily because it has such a small number of electronic parts in the signal path to color the music. I have a very nice Decware Pre-amp that I don't use now that I have the Omega's. When I place the Pre between my source and Amp, the Omegas reveal a slight loss in transparency due to the added electronics. With lesser speakers this loss of transparency is not noticeable.Go to post #43 in the Decware link I posted above and I describe exactly how I have my Subs connected.
How does Louis set up the Outlaws? From the pics it seems as if he uses jumpers from the speaker's main terminals (speaker level inputs) to the plate amp, is that correct? This way you can run the main drivers full range and adjust the sub output to your liking?
Canada Rob wrote:This is how to hook up a sub in a music system if you aren't using a pre-amp that cuts the low frequency to the main amp.
In some Home Theater circles they claim that using Digital or Electronic filtering to remove lower frequencies from the mains improves sound quality and volume output. This assumes the Digital or Electronic filters being used have no negative impact on the audio signal quality overall. I've done a lot of experimentation with Low Frequency Filters using my Oppo 105D. In my experience this seems to be a Theory that works a lot better on paper than in practice as far as my Music System is concerned.I always end up going back to running the Mains Full Range and simply using the Sub to Augment the Bass of the mains (play over the low end of the mains). With music I find it easier to dial in the Sub and the result is a more seamless integration (sub does not call attention to itself). The DeepOmega is nice since it can play cleanly up beyond 120hz which can add a lot of POP to drums.
Are you referring to active or passive filtering (before or after amplification)? Seems there would be a big difference. I'm working on setting up active filtering so the amp benefits from low freq cut.
I've used the Paradigm X20 (Speaker Level):<snip>And the Paradigm X30 (Line Level):<snip>I actually still have both units. Although these are powered I think they would qualify as Passive Devices? In both cases the added electronics in the Signal Path did more to hurt the overall sound quality rather than help. There was a loss of transparency & clarity in my system when adding either device into the mix. The second issue is you become a speaker designer in that you have to figure out how to set the crossover so that Mains and Sub blend seamlessly. If you think this is easy then ask Louis why his speakers are Single Driver with no crossover.I've also experimented with filtering in the Digital Domain with my current Oppo BDP105D and a B&K Pre-amp / Processor which would be considered Active (Before the Amp). Problem here is not only setting up the Crossover properly but as mentioned earlier the speakers are reproducing low frequencies form the Amp's Sonic Signature and the Sub producing low frequencies from the Pre-amp's Sonic Signature. In my system I could hear a lack of coherency between Mains & sub (I could sense at times where the Mains left off and the Sub picked up which does not sound natural).pstrisik, please let us know if you have better success than I did.
