RE: It's my understanding that room cancellations can't really be...

Planar Speaker Asylum

Welcome! Need support, you got it. Or share your ideas and experiences.

You are correct that you can't just boost the 70Hz with a typical PEQ filter. It won't work because you just drive the cancellation deeper while overdriving the amp and speaker.

But ... you may be able to use an all-pass filter at 70Hz and improve the notch. You can do all-pass with a miniDSP 2x4HD. I've had some success with this approach.

But the way the DWM might be able to fill it in is by placing the DWM at a spot in the room where that cancellation does not exist. I use two DWM's this way and they removed cancellations that I had between 100 and 180Hz.

Agilist, Musician, Photographer, Audiophile
Magneplanar: 3.7, CCR, MC1,LRS, MMGW, DWM; Outlaw: UltraX12, LFM-1C; Emotiva: XMC-2; Nord: Nord One NC500DM, Nord Three 1ET7040SA; Outlaw: Model 7500; OPPO 205

This post is made possible by the generous support of people like you and our sponsors:

Follow Ups Full Thread

Topic - Using Magnepan DWM woofer with Quad ESL-63 type? - Zombie 03:24:31 08/21/21 (15)

Subwoofers and Quads - Jonesy 10:43:12 08/25/21 (10)

RE: Subwoofers and Quads - Zombie 12:56:41 08/25/21 (9)

RE: Subwoofers and Quads - Zombie 04:49:58 08/28/21 (0)

RE: "there's a deep notch at about 70 Hz" ... - andyr 22:19:07 08/27/21 (4)

It's my understanding that room cancellations can't really be... - MWE 05:17:08 08/28/21 (2)

RE: It's my understanding that room cancellations can't really be... - MarcL 07:04:06 08/28/21 (1)

Thanks. Very useful and informative response. Nt. - MWE 12:03:08 08/29/21 (0)

RE: "there's a deep notch at about 70 Hz" ... - Zombie 04:45:53 08/28/21 (0)

RE: Subwoofers and Quads - Jonesy 13:22:58 08/25/21 (2)

RE: Subwoofers and Quads - Zombie 08:20:15 08/26/21 (1)

RE: Subwoofers and Quads - Jonesy 20:46:24 08/26/21 (0)

RE: Using Magnepan DWM woofer with Quad ESL-63 type? - grantv 09:15:45 08/21/21 (0)

RE: Using Magnepan DWM woofer with Quad ESL-63 type? - MarcL 05:48:47 08/21/21 (2)

RE: Using Magnepan DWM woofer with Quad ESL-63 type? - Zombie 10:53:42 08/22/21 (1)

RE: Using Magnepan DWM woofer with Quad ESL-63 type? - MarcL 10:57:15 08/22/21 (0)

Follow Ups

RE: It's my understanding that room cancellations can't really be... - MarcL 07:04:06 08/28/21 (1)

Thanks. Very useful and informative response. Nt. - MWE 12:03:08 08/29/21 (0)

Post a Message!