#21
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Tony D'Agostino Momentum S250 MxV & HD pre; Linn Klimax Organik DSM, SonicTransporter, EtherRegen; Acoustic Signature Typhoon Neo, Koetsu RSP, Boulder 1108; Sf Il Cremonese; Shunyata Everest, Altaira, Sigma & Alpha v2 |
#22
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I have a digital preamp, mains that go down to the 30s (at least on paper), and subs.
I have tried different approaches: 1. Sending full frequency to the mains and using the filters in the subs to fill in the low frequencies (I think that this is what you are trying to do) 2. Using the crossover in the preamp and set an arbitrary number to crossover without paying much attention to speaker and subs placement. 3. Hire an expert to help setting the best crossover point and speakers and sub integration and placement. The third option won by a large margin. The problem is that integrating the mains and the subs is not as easy at it sounds. You need to first find the best location for the subs in your room, then you play with crossover frequencies, and then you play with the phase of the subs to get them to work well with your mains. In my experience, the benefits I got from adding the crossover surpassed the cons. |
#23
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#24
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Even with your preference, is there not still an analog portion in order to connect to the amps? The analog portion of the active crossover is likely inferior in terms of distorion and noise to that of a very high-end preamp. That's my only concern. Is that faulty thinking on my part? Thanks, Mike
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TAD Reference One MK2 Loudspeakers, Esoteric Grandioso M1 Monoblock Amplifiers, Esoteric Grandioso C1 Linestage Preamplifier, SilenZio Music Server, Shunyata Everest 8000 x 3, Omega XC x 3, Omega QR x 2, Furutech GTX-D NCF(R) AC Receptacles |
#25
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ok - happy to reply since you asked.
In what I am suggesting - there is no anlog pre amp. The digital signal goes into the deqx(if you haven't looked it up ck it out on the web) via a digital cable. When in the deqx, the volume cotrol and the crossovers are handled in the digital domain. In addition, there are 10 bands of parametric eq avaiable to use to help eliminate room nodes and such. Since all this is done in the digital dmain, there is no loss of transparency. As the signal is about to leave the deqx, it is converted to analog, and then goes directly to the pwer amp - so the signal path is the shortest it can possibly be - even adding a high end pre amp after the deqx will result in a loss of transparency for all the reason stated above - meaning less is more when in the analog domain. Personally, I am quite confidnet this is the very best way to go - running full range and trying to add subs will have less resolution and more room bumps. |
#26
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TAD Reference One MK2 Loudspeakers, Esoteric Grandioso M1 Monoblock Amplifiers, Esoteric Grandioso C1 Linestage Preamplifier, SilenZio Music Server, Shunyata Everest 8000 x 3, Omega XC x 3, Omega QR x 2, Furutech GTX-D NCF(R) AC Receptacles |
#27
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To the OP, I suggest that you check out:
www.soundoctor.com/whitepapers/subs.htm Lots of info here about mains, subs, and crossovers. And, I agree with trponhunter, specially If you are only using digital sources. |
#28
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PS. I do not know anything about DEQX, where I agree with trponhunter with is that a crossover is NOT necessarily a bad thing.
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#29
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so much for pronouncements like "this is my last post". The sound doctor article is excellent - I would encourage everyone to read it - it explains why really only the kinds of tools available in digital domain allow really good and proper subwoofer integration. I've done it the old way for years - you may think you have gotten excellent results, but they are not excellent versus doing it correctly with the abilty to delay time and crossing over the subs correctly. In my store, everyone is amazed that there is no discontinuity or ability to hear the subs versus the mains at all - they were all integrated digitally, with the ability to delay time differences down to .1 milliseconds. I think these types of systems are the most exciting thing in audio right now - we have all kinds of new tools and products that outperform what was avaialalble only a few years ago by drastic amounts you just have to be open minded and sort of forget the ways you used to do things.
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