Gilbert Posted August 25, 2005 Author Share Posted August 25, 2005 Holly Auachamoly....Don you resurrected an old post. I appreciate everyone's input on the subject, but Craig answered my question a while back. Craig pointed out the fact that my preamp (C22) has a L+R RCA output, so there's no need to build anything. Also, I recently aquired some new/used MC60's, so I'm set on the amps. As soon as the preamp and newly aquired amps are done at Craigs, I will have my 3 channel tube system up and running. thanks guys.... Quote Link to comment Share on other sites More sharing options...
psg Posted August 25, 2005 Share Posted August 25, 2005 I gotta ask... Why a center speaker? What needs to be filled-in? My KHorns are 18' apart. When the lead vocals come on, they sound as if they originated from the center speaker over the TV. Except that speaker is not playing at all. There's no need to fill in anything. Is this needed when they are spread apart more? Quote Link to comment Share on other sites More sharing options...
Gilbert Posted August 25, 2005 Author Share Posted August 25, 2005 ---------------- On 8/25/2005 1:24:35 PM psg wrote: I gotta ask... Why a center speaker? What needs to be filled-in? ---------------- The pair of cornwalls currently in my 2 channel system are spaced damn near the exact same distance as your Khorns (18ft). They are orientated with their backs 2" off the wall. Like your khorns, my cornwalls fill the room with sound quite nicely, and my only reason, at this point in time, for a 3rd. channel is more for experimentation than the need to fill any precieved sound holes. Quote Link to comment Share on other sites More sharing options...
PrestonTom Posted August 25, 2005 Share Posted August 25, 2005 ---------------- On 8/25/2005 1:24:35 PM psg wrote: I gotta ask... Why a center speaker? What needs to be filled-in? My KHorns are 18' apart. When the lead vocals come on, they sound as if they originated from the center speaker over the TV. Except that speaker is not playing at all. There's no need to fill in anything. Is this needed when they are spread apart more? ---------------- The deficit is one of spatial imaging. Fortunately it is not severe but it is most noticeable with widely separted speakers. The term "hole in the middle" is a bit unfortunate since you will still get a phantom center (when the L & R have identical signals). However the center (usually percussion and vocal) may not be as "solid" (it is hard to describe - also the sweet spot may be smaller or more fragile). The center channel will cure that. I think (my opinion so don/t go wild) it may also help with some room acoustic issues. Since each channel (L & R) is producing some delay and add filtering ("comb filtering"), the center may smooth that problem out. Yes, the center will also produce comb filtering, but it is unlikely that the "delay & add" would be the same as the L & R components. So the sum would be smoother. I hesitate to bring this up since this issue is causing various misunderstandings in another thread. Additionally, you are now also listening to the summed signal from a speaker that is on axis (the L & R may not be) so you may get a better frequency respeonse for that reason. Setting up a center is fairly simple. Give it a try. good luck, -Tom Quote Link to comment Share on other sites More sharing options...
psg Posted August 25, 2005 Share Posted August 25, 2005 Well, I have a Heresy in the middle so I have a feeling I might loose out... I get a better soundstage now on 2-channel than I do on DTS multi-channel concert DVDs. Quote Link to comment Share on other sites More sharing options...
Dirk Diggler Posted August 25, 2005 Share Posted August 25, 2005 I could use one of these. I have three La Scalau up front in my HT. Sounds kinda cool to experiment with. Quote Link to comment Share on other sites More sharing options...
DRBILL Posted August 26, 2005 Share Posted August 26, 2005 ---------------- On 3/26/2005 2:37:11 AM DrWho wrote: Btw, you don't HAVE to have a third amplifier to do this either...one of the boxes works from the output of your amps at speaker level, instead of the more typical line level boxes. That advantage to the third amp is that it gives you much simpler control over the center channel volume.---------------- I don't think so. That would have to be "subtractive" and I believe that everybody, including PWK has retracted that idea. I just gave a moderator a "hideing" for misinformation. I'm sorry for being negative today. I guess somebody has to do it. DRBILL Quote Link to comment Share on other sites More sharing options...
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