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DWM and CC2
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Posted on August 1, 2014 at 08:09:55 | ||
Posts: 180
Location: NJ Joined: August 3, 2012 |
So I finally got the DWM that I have been craving for so long for my CC2 center channel. It's all hooked up and sounds much better that running my subs high to fill in that 160hz and below that the CC2 won't do. However, I had always thought that the DWM summed the two inputs. I now realize that I was incorrect, and the fact is that the DWM is a stereo unit with two separate voice coils. That being said, my current configuration of one input in and then high passed to the CC2 is only using half of the DWM. I can always run the DWM in series and parallel that with the CC2, but I really like the way that the high pass takes the low end stress off the CC2. So my questions are: - What will be the effect of running the amp to the DWM in series, and running the high pass outputs in series to the CC2? - Or, what will be the effect if I run the DWM in series, and only use one high pass output to the CC2? Note, I am using a Sunfire Cinema Grand Signature for the center, surrounds, and side speakers, so low impedance should not be an issue as long as the load is above 1ohm. |
RE: DWM and CC2, posted on August 3, 2014 at 01:22:07 | |
Posts: 31273
Location: upstate NY Joined: June 6, 2001 Contributor Since: June 25, 2000 |
The sole crucial issue I have with wiring a big capacitor high-pass filter in series with a CC2 is how big capacitors corrupt treble. Iff you can bypass that DMW's capacitor to feed your CC2's tweeter & its higher-pass filter, then I'm on board, but that would require schematics. ... just my 2¢ ☺ Planar Asylumwhere speakers are thin & music isn't |
RE: DWM and CC2, posted on August 3, 2014 at 02:34:53 | |
Posts: 31273
Location: upstate NY Joined: June 6, 2001 Contributor Since: June 25, 2000 |
dah'uh ... you were talking series wiring of your bass panels. The above should work. The other white wire looks like it would mess the intended XO. Or, go conventional & just use one set of jacks. PS: Iff impedance isn't an issue, & you require more real bass, wiring the isobaric DWM woofer panels in parallel (2Ω) for 6dB boost (not bass extension). ... just my 2¢ ☺ Planar Asylumwhere speakers are thin & music isn't |
RE: DWM and CC2, posted on August 3, 2014 at 13:38:24 | |
Posts: 31273
Location: upstate NY Joined: June 6, 2001 Contributor Since: June 25, 2000 |
F.W.I.W., It's not uncommon for speaker manufacturers to use raw drivers of dissimilar nominal impedances. That's also why some low-end manufacturers in the past (don't recall names) have made 2 different speaker models where the upgraded version merely had a second identical woofer. You should see what their impedance curves even when the raw drivers supposedly match (or a conventional dome/cone driver for that matter). Then, there's the case of the Magnepan's XOs. Although their driver impedances are virtually purely resistive loads, the capacitors & inductors add to the total impedance loads that the amplifier sees. In simple passive parallel XOs, what matters is what's downstream impedance of the (caps) capacitors & inductor coils (chokes).
In the case of the high-pass filter feeding your CC2 (to attenuate THD riddled resonances occurring during acoustic low-frequency roll-off that vibrate the entire diaphragm which is why Maggie bass panels have tuning dot dampers), the one you had made the deduced internal XO go all wonky. It didn't just simply put 2 stock internal caps in series (which is tricky stability issue in of itself), to effective half the capacitance to further attenuate the CC2's mid-bass lowest-frequencies by a full octave to create a lull. It truly went all wonky instead! ... just my 2¢ ☺ Planar Asylumwhere speakers are thin & music isn't |
RE: DWM and CC2, posted on August 3, 2014 at 21:37:35 | |
Posts: 31273
Location: upstate NY Joined: June 6, 2001 Contributor Since: June 25, 2000 |
oops, this configuration attenuates the CC2 by 6dB.
☺ Planar Asylumwhere speakers are thin & music isn't |
So, how is it working ???, posted on August 17, 2014 at 17:54:06 | |
What configuration did you end up with and how do you like it ? TIA |
Wiring options from Magnepan, posted on August 18, 2014 at 11:02:44 | |
Here are some wiring options from Magnepan. |
RE: So, how is it working ???, posted on August 18, 2014 at 11:32:57 | |
Posts: 180
Location: NJ Joined: August 3, 2012 |
I would use 4 CCRs instead of the MC2s. And then I'd wake up I'm sure. |
RE: So, how is it working ???, posted on August 19, 2014 at 14:21:36 | |
I wonder how 2 CCx's would sound mounted vertically ??? |