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RE: Now we are getting somewhere..............

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cawson@onetel.com

In Reply to: RE: Now we are getting somewhere.............. posted by Kal Rubinson on July 19, 2024 at 10:10:08

> You can set a curtain in DL to prevent any corrections/adjustments above the critical frequency (or anywhere you want).
Yes, and the DL in the M33 has this pre-set at 500 Hz (unless you pay extra for the full frequency DL) - but you can't prevent the higher frequencies from passing through the digital processor, unless you XO beforehand and send only bass frequencies to a DSP, then to a dedicated amp, while the upper frequencies could go to another amp without DSP.
> Inevitable.
Yes with full-range amps that include DSP. Solution described above but adds complication and cost
> That is impossible.
Not sure why that should be. The M66 is capable of XO'ing the signal and could (if NAD wanted it) send the bass only to a DLBC and then to the Sub Outs, while the rest could bypass all DSP and leave the M66 via the main output sockets.
Are you sure this is not what could be done within the M66? I don't know, but I see no reason why it couldn't be done that way. Thanks

Edits: 07/19/24

Follow Ups:

RE: Now we are getting somewhere.............. - Kal Rubinson 13:48:26 07/19/24 (2)
"Not sure why that should be. The M66 is capable of XO'ing the signal and could (if NAD wanted it) send the bass only to a DLBC and then to the Sub Outs, while the rest could bypass all DSP and leave the M66 via the main output sockets.
Are you sure this is not what could be done within the M66? I don't know, but I see no reason why it couldn't be done that way. Thanks"
DB-BC involves integration of subs and mains including configuration of crossover filters above and below the nominal c/o frequency and phase correlation within the shared portion of the spectrum. It cannot correct the sub(s) only; that would be the sound of one hand clapping.
P.S.: It works well on the M66.

Edits: 07/19/24
- RE: Now we are getting somewhere.............. - cawson@onetel.com 14:19:36 07/19/24 (1)
  I'll have to borrow an M66 to see if it causes less damage to the higher frequencies then DL does in the M33. I'm anxiously waiting for a Stereophile or HFN review that will hopefully provide a comprehensive description.
  
  As it happens I can do without DL as my speakers (Avantgarde Duo XD) have a rather less user-friendly DSP built into its bass amps, but of course this wouldn't help with the REL subs that I'm considering ditching.
  - Reviews on the way..............(NT) - Kal Rubinson 16:19:41 07/19/24 (0)

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