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I, too have my fronts and center biwired, but not the surrounds. I like to think that I can hear a difference.

Wow, I am surprised that the 40Hz null EQed out so easily! At first I thought that the 40Hz and 56Hz nulls were likely either room interactions, or phase cancellations between the two subs. They still might be, but in my experience, these phase-related nulls do not typically respond very well...

One more thing to consider is that when you use two subs, you are MUCH more likely to encounter wave-front interactions between the two sources which can be devilishly difficult to tame. Some rooms and sub positioning are more troublesome than others WRT this. Much easier to tame room nodes...

I am intrigued by this thread. I may build a small, sealed box with mondo-amp, since that appears to be the way that this thread is headed. Would be relatively simple, plus I already have tow high power pro-audio amps gathering dust. BTW, they are gathering dust, and not in my equipment rack...

Also check out: http://www.tnt-audio.com/clinica/tweaks.html

Well, yes, and no. If the null is caused by a room interaction, it will come back, but not nearly as strong as before, because it will be proportional to the amount of attenuation you cut the other frequencies with. If it is caused by electronic issues, such as poor XO management or driver...

By coiling the speaker wire, you are, in effect, creating an air core inductor with your speaker wire. Inductors are typically part of crossovers, used to roll off high frequencies. So by coiling your speaker wire, you are, in effect, adding another inductor to your speaker’s cross over, and...

You may want to play around with the phase a bit. You may be encountering a room interaction node that is very difficult to EQ out without some fairly dramatic cuts across vast frequency spectrums. Also, some (even very small) changes in the sub position, and even orientation can sometimes...

bruce: It would probably be fairly difficult to detect such compression in the lower frequency ranges we are talking about with quality subs. Especially considering that the vast majority of subs equipped with such circuitry also contain onboard amps designed to work in concert with the XO and...

Klipsch, especially the RF line. The RC3II is really a fine center.

Steve: As tempting as it appears, it is frequently a backwards approach to try to boost nulls with the EQ. The nulls are there because of some “real issue”. This real issue is doing something to swallow up certain frequencies. Simply heaping on more wattage into the same frequencies will...

Pull down the nodes at 16 and 36hz, and it looks like it shouldn’t be too bad. The 36hz node is likely either a room gain issue, or maybe a crossover issue. You could try moving the sub into a different location (or taking near-field readings) to see if it goes away (suggesting a room...

IMHO, the differences that we are talking about in speaker wire legth are NOT worth worring about. Life is too short. But the fact that you MAY want to use them in a different arrangement may make you wish that you had equal length speaker wires in the future. Just do not store the "extra"...

North Dakota!!?? (Am I the only one??)

Actually, I will temper my comment above with the fact that many people subjectively find a peak in the 30-80hz range pleasing ot the ear in a sub. So personal tastes are also a huge factor.

Steve: In my experience, it is MUCH easier to cut a peak out, rather than EQ out a null.

Gomez: A null is a “low spot” on a frequency response curve. It represents a frequency range that is (for one reason or another) under-represented. This can be due to a mechanical factor (enclosure design, driver choice) or electronic (cross-over), or due to room interaction (phase...

Thanks Ron! Am am quite happy (and satisfied) with my current PC. I have a new version driver "on order". I just thought that there may be a bit more of a difference given the new 320 watt amp vs the old 190 watt one (although I KNOW that amp wattage is often misleading). BTW, is the new...

BruceK: I would probably first suspect a "problem" in the electronic path of the null that EQ's out easily. Most likley a XO point that does not jive with the drivers frequency response curves very well. I find most low frequency nulls are very hard to overcome by boosting gain. Some higher...

Kyle: You have only two drivers, so a 3-way is not an option. Plus, you stated that you already have a sub that you will be using, so, in effect with 2 way mains and your sub XO, you will have a 3-way system, ultimately.

The problem with trying to boost the nulls (the low spots on the curve) through EQ is that the nulls are there for a reason. Think of these as “black holes” in the frequency spectrum, or think of the room as “swallowing up” the frequencies that are in the null. Now, simply trying to boost the...

Maybe the SVS folks can tell me if it would be possible for owners of the "original" PC series to upgrade to the "new" amplifier present on the PCi series. I already have a new driver on order.....

I had an old pair of HUGE Klipsch speakers back in the 70's. Back when high powered amps were mondo-expensive. Their efficiency made them really attractive. I thought that their sound was incredible, certainly miles ahead of the other speaks that I listened to at the time. So when I bought...

Also, doesn't the BFD have a switch on the back to set it for consumer line level input?

Perhaps an active direct box would work? http://www.zzounds.com/love.music?p=...=1307779084413

It sounds like I have a similar setup to you. I have my SVS 20-39PC sitting in the corner right beside the couch. I experimented quite a bit before deciding on this location. It provides modest corner loaded gain. I probably do not get the full benefit of corner loading because the couch is...

For a good discussion on the Inifite Baffle Subwoofer concept, go to: The Cult of the Infinitely Baffed: http://f20.parsimony.net/forum36475/ Like most things in life, the Infinite Baffle Subwoofer (IB) has its pluses and minus's.

Anybody have the t/s parameters on the SVS drivers (old and new)? Just curious. SVS = Think outside the box.

Yes, you certainly CAN set your mains to "large" and run your sub too (set sub to "both"). That is what I am doing with my Klipsch RF3II's. I have them biwired and "augment" them with an SVS sub, and they sound great. I tried setting them to small, and they sounded OK that way, too, but I...

So the concensus is that the Tempest is probably the best driver as far as bang-for-buck in am IB sub? I realize that in a "money is no object" system, a few HE15's would brobably sound really nice, but back to the real world.... Any drivers I have overlooked that may have some application in...