In a similar vein

Posted by Lew (A) on November 20, 2014 at 07:26:23

In Reply to: Solution (mine at least) posted by Chip647 on November 20, 2014 at 06:51:28:

I would cross over at or below 100Hz and no higher than that. Other than that, 12db passive creates a fairly significant insertion loss and also places several reactive elements in the signal path. So, if anything more than first order crossover is desired, I prefer active vs passive. I agree with the idea in principle, but there is no free lunch.

I have two systems. One is based on a Beveridge 2SW, with which I use home-made transmission line woofers, driven by a vintage Threshold solid-state amp, crossed over at 80Hz using a Dahlquist DQLP1 (18db/octave, I think) for the low pass and the internal crossover in the 2SW (slope unknown but steep) for high pass filtering. (The Bev has a built-in direct-drive amplifier.) I am surprised at how much I like this set-up, because I previously had a strong bias against active crossovers. My other system is based on a full-range ESL with no reactive elements in the signal path; I love that too, and it does sound a tad more "coherent" in the region between the low midrange and extreme low bass.

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Follow Ups Full Thread

Topic - How low do we have to go??? - TomWh 08:39:35 11/19/14 (26)

RE: How low do we have to go??? - drlowmu 11:23:23 11/23/14 (12)

RE: How low do we have to go??? - Lew 12:00:17 11/24/14 (1)

RE: How low do we have to go??? - drlowmu 15:11:55 11/24/14 (0)

Never trust listening tests alone for this - Triode_Kingdom 23:36:52 11/23/14 (9)

+1 (nt) - Tre' 12:47:25 11/24/14 (0)

RE: Never trust listening tests alone for this - drlowmu 10:54:49 11/24/14 (7)

RE: Never trust listening tests alone for this - Triode_Kingdom 21:08:28 11/24/14 (4)

Do you ever get tired ?? - drlowmu 21:30:01 11/24/14 (3)

RE: Do you ever get tired ?? - Triode_Kingdom 21:42:53 11/24/14 (2)

RE: Do you ever get tired ?? - drlowmu 15:47:19 11/25/14 (1)

RE: Do you ever get tired ?? - Triode_Kingdom 10:22:22 11/26/14 (0)

RE: Never trust listening tests alone for this - cpotl 16:53:04 11/24/14 (1)

RE: Never trust listening tests alone for this - drlowmu 21:13:48 11/24/14 (0)

RE: How low do we have to go??? - Sherwood Forest 08:50:49 11/20/14 (1)

see my post below - Ralph 09:16:13 11/20/14 (0)

Solution (mine at least) - Chip647 06:51:28 11/20/14 (5)

You got that he's talking about phono reproduction, right? nt - Ralph 09:12:27 11/20/14 (3)

No, I guess that the concept of choke loading plates on a phono stage - Chip647 15:35:26 11/20/14 (1)

RE: No, I guess that the concept of choke loading plates on a phono stage - Donald North 23:38:26 11/21/14 (0)

Sorry about that, nt - Lew 14:27:07 11/20/14 (0)

In a similar vein - Lew 07:26:23 11/20/14 (0)

RE: How low do we have to go??? - DanK tubes 18:34:06 11/19/14 (1)

Thanks for the link, however - Ralph 09:10:44 11/20/14 (0)

RE: How low do we have to go??? - Paul Joppa 17:06:12 11/19/14 (0)

RE: How low do we have to go??? - Ralph 09:26:59 11/19/14 (1)

You summed it up (no pun intended!) correctly... - Dman 05:50:21 11/20/14 (0)

Follow Ups

In a similar vein - Lew 07:26:23 11/20/14 (0)

In a similar vein

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