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RE: Sub option for MG .7 Rythmik F12 or TBI Audio

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In Reply to: RE: Sub option for MG .7 Rythmik F12 or TBI Audio posted by Satie on October 10, 2016 at 19:19:44

Yep, test tones sound more distinct. I did the piano test because piano recordings that used the keys on the left end sounded more muddy as the Oppo crossover went higher.

I do think using line in is clearer than LFE at the same point (50 or 80 HZ)....at least for the few recordings I tried. Rythmik documentation for my amp contains this ambiguous to me sentence: "The trade-off between using LFE IN and LINE IN (with AVR/12 LPF switch position) is the perceived background noise level." I have to ding Brian on his writing. I can't tell which input has the noise or if the noise is real or imaginary.

Rythmik advised using Oppo bass management to bypass their own crossover and phase control(for distance).

I'm glad my Maggies go so low. REW likes my current sub position but it likes it more with the Oppo crossover than the Rythmik crossover.

Follow Ups:

RE: Sub option for MG .7 Rythmik F12 or TBI Audio - Satie 07:23:19 10/11/16 (3)
It occurred to me that the Oppo is not doing as well with the +10db setting for the SW output with the level attenuated at the sub input. Try using a lower SW output and set the level on the sub higher. The Oppo DSP might not do as well on 10db crossover level differences.
- RE: Sub option for MG .7 Rythmik F12 or TBI Audio - larryk1 15:37:01 10/20/16 (2)
  Just added 2nd Rel T-7i to my Maggie .7s.
  Overall sound is Smoother, Fuller and Richer than single sub.
  Bass is deeper, tighter, and more defined.
  Solid bass measured down to 26HZ.
  The soundstage has increased, especially the depth and the midrange sounds a bit more detailed and open.
  Never thought the single sub sounded directional until I added the second sub.
  - RE: Sub option for MG .7 Rythmik F12 or TBI Audio - BDP24 00:01:41 10/21/16 (1)
    Larry, at what frequency are you crossing over to the subs? Slope?
    - RE: Sub option for MG .7 Rythmik F12 or TBI Audio - larryk1 06:21:19 10/21/16 (0)
      Sub is connected via Neutrik Speakon connector high level input and crossover set to approx 50 hz.
      
      Info taken from Rel manual:
      "The high-level input is designed to accept the stereo (two-channel) signals from the speaker terminals of your receiver, integrated amplifier or basic amplifer. This has the advantage of ensuring that your subwoofer receives exactly the same signal as the main speakers, which means that the character of the bass from the main system is carried forward into the Sub-Bass System.
      This is a very important point and together with REL's Natural RollO TM circuitry, ensures far superior system integration of the Sub-Bass System with the main system."
      
      No published info on slope.
      
      Dialing in Rel subs are a combination of placement, crossover and volume settings, and as you know are room dependent. The 2nd sub required lowering the crossover from 65Hz to 50Hz and extended the frequency from 31.5Hz to 25 Hz.

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