#4121
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In either case, these slopes are relatively shallow (i.e., they are not brick wall filters at 50hz or 70hz) and will offer a fair amount of attenuation above the knee frequency. Additionally, the actual corner frequency may differ from the nominal corner frequency depending on your amp's input impedance. One "solution" is to remove them from the signal chain and your amp will again receive a full-bandwidth signal. Another option is to choose a different nominal frequency (e.g., 20 hz or 30 hz) to correct for your system differences. I think with devices like these, it is important to either measure or experiment with a number of frequencies. In the case of FMOD's, at $27.50 per pair I think we can easily swap them out. |
#4122
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#4123
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#4124
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It may be a completely different experience in yours. |
#4125
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BTW, I've come to the conclusion that Rythmik is the way to go with my SUB upgrade. I considered PSA, SVS (SB 2000) and Rythmik L12 / F12G, and it came down to this:
1. stereo setup with Rythmik L12's 2. Single Rythmik F12G Which option do you guys believe would be my best bet, as I cannot afford a stereo setup with the F12G, in itself a very valid alternative. Posing this question here for the familiarity with the amplification part of the system. I also posed the question to Rythmik, as given the budget constraints they should provide a candid reply. I remind you my setup is near-field in a small room. Thanks for any inputs. Last edited by Musica Amantem; 08-31-2017 at 10:13 AM. |
#4126
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#4127
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Since my room is small, two 300-watt drivers (stereo) should be better, power wise, than the single 370 watts of the F12G. In addition, since I cross-over at 100 Hz (because of my fixed High Pass filters), the F12G's extended bass capability won't be used much at that 100 Hz cross-over as opposed to someone crossing at 120 Hz. But, this is only my assessment, so I'm open to corrections. Thanks for your thoughts. Last edited by Musica Amantem; 08-31-2017 at 11:46 AM. |
#4128
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Just received word from Rythmik:
"I would go with a pair of L12s. I have a L22 in my nearfield desktop setup paired with Dynaudio BM5 mkIII monitors and it sounds amazing." So, apparently a pair of L12's beat one 12FG for about the same investment. Last edited by Musica Amantem; 08-31-2017 at 12:05 PM. |
#4129
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Now that you've apparently decided, keep in mind that Rythmik is near Austin Texas. Not quite Houston, but everything around there might be slowed down with the storm. |
#4130
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1. The biggest difference between the L12 and the F12G is the amplifier. The L12 uses a Hypex HX300 amp which only accepts line inputs (stereo and LFE). It is similar to the amp in my F8's. The F8 has a similar amp with two 300 watt modules, one for each driver. The F12 uses the larger, class AB amp with about 400 watts. This amp allows for much greater control (PEQ, etc.) and allows speaker-level connection. I have no opinion regarding which amp is superior. 2. In another forum, Jim Salk as stated that the rated output at 20hz is identical for the L12 and F12G. The F12G may go a bit deeper, but in my world I have little need for output below 20hz. The F12G driver is a really nice driver, custom designed by Danny Richie with a cast frame. The L12 uses an off-the-shelf paper driver with a stamped frame (though Jim asserts that the face plate on this driver is particularly thick). 3. The L12 is also in a smaller enclosure designed to fit in the USPS shipping parameters. This helps Jim market this for $539 shipped in Conus. If I had $1,000 to spend on Rythmik subwoofers I would choose two L12's over a single F12G or F8. If I were ultimately looking at spending $2,000 I would purchase two F12G's in your case. However, one could make the argument that you money would be better spent on four L12's, but now we are getting silly. Another alternative - applicable since you are located outside of free or cheap shipping zones - is to purchase the custom installation option (drivers and amps only) and have the cabinets built locally. The cabinets are really just well-braced sealed boxes that almost anyone could make. EDIT: I wrote this before the other replies. It is comforting to get some confirmation direct from the source. Last edited by Rosco65; 08-31-2017 at 02:45 PM. |
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