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---------------- On 6/20/2005 3:40:42 PM blenni wrote: Anyone bi-amping, if so how many watts each and is it a dramatic difference??? ---------------- It's a dramatic difference if you bypass the passive networks and use a digital active crossover such as made by DBX or Behringer. Otherwise, there may be some significant gains if your amplifier is having trouble providing enough current by itself. But my experiments with passive bi-amping with arguably under-capable amps on the RF-7 yielded no significant improvement. An active crossover improved pretty much everything in a big way.

The speakers have been sold. I am now Klipschless.

What kind of crossover is it?

I've tried passive bi-amping, which is what you are describing. There was no real ly significant improvement, although it did sound a little different, which made me think on a few occasions that I had perhaps struck gold. But really, things were pretty much the same. The configuration you described in the above posts should work fine, but don't expect too much from it. It wouldn't hurt to try though.

There's a guy in Oregon that has a pair of RF-7s avaialable for THAT price, although I don't think they'll be available much longer.

---------------- On 7/8/2005 8:56:04 AM wstrickland1 wrote: also, what affect does this have on speaker impedence? ---------------- When actively bi-amping, or tri, or other multi-amping, each amplifier is hooked directly to one driver only, so it sees the impedance curve of that driver in it's enclosure alone, and only over the specified frequency range. Generally speaking, the impedance curve will be easier on each amplifier and current demand lower than when running a passive network.

---------------- This is very interesting. However I have questions. First, I'll tell you I am putting together a 2 channel system. I will use a pair of KLF 30s (or 20s) and my existing Carver 6 channel amp. Right now, I am using a Carver CT 26v DPL pre amp which actually sounds ok but will be upgrading to something better down the road. So down to the bi amp business. I have 6 x 133 watts of pretty clean amplifier. What would I need in the way of crossovers? Does it come in a "unit" type set up or are they just raw components? Also, with 6 equal channels, is there some way of tri-amping the KLFs? Has that ever been done? I would appreciate any help. Billy ---------------- I've used a Behringer DCX digital active crossover and Behringer DEQ equalizer with excellent results. http://www.behringer.com/DCX2496/index.cfm?lang=ENG http://www.behringer.com/DEQ2496/index.cfm?lang=ENG These two boxes and a calibration microphone will give you six channels of active crossover (enough for stereo 3 way) and a lot of EQ power. You can get some seriously good results. Some others here will tell you to avoid Behringer and try DBX or some other brands. I'm sure they all work well. Active bi-amping is the real deal if you ask me. The benifits are undeniable once you've heard it. A big problem ends up being the volume control on all the channels. How do you do that? You could have a custom six channel pre-amp built. Or, you can use a home theater receiver (or two) with digital amplifiers (my choice). Hook in through the DVD 5.1 inputs and all your channels will be volume synchronized with a single remote control. A word of caution: With an active crossover system, you must take care with the settings and hookups because your tweeters are unprotected with their passive filter removed. You're relying totally on the electronics to prevent low frequency signals from reaching the tweet and frying it. Thus, it is important to have some kind of DC or low frequency protection on at least the amplifier outputs going to the tweeters. If your amps send a thump down the line when you turn them on, or if you have some significant 60hz hum, you'll want to take care of that first, or leave some kind of passive filter, maybe just a cap, on your tweeter. As long as you remain keenly aware of this issue your tweeters will be safe.

---------------- On 7/11/2005 1:21:11 AM wheelman wrote: THat is so tempting. I love the maple ones. ---------------- Resistance is futile. You must have them.

One last chance for anybody within driving range of Eugene Oregon to come pick up a beautiful pair of RF-7s in near perfect condition, maple finish. I've got a spare room here and can provide free accomodation if you need to spend the night. Asking $1000.00. I'm getting ready to ship these wonderful speakers off to a buyer in Florida if I get no local takers.

For $300.00, it is very good, especially since you'll be running a digital signal straight into it. It'll run all your speakers, and the sound quality loss from the speaker wire connectors is of little signifcance.

That's a complicated question for sure. Generally speaking, larger speakers can play louder down lower, and the size gets exponentially bigger as you try to get to the lowest octaves. You'd have to include quality of the bass in the equation, because there are ways to cheat a low frequency out of a small driver and enclosure by using high excursion drivers, huge amplifiers, and equalization. If you are talking about horns, it is a directly related ratio of the size of the horn opening and length of the horn as to how long a wavelength it can produce. I'm sure a horn expert on this forum can give you a numerical answer.

I just ordered a second DCX2496 as well as an SRC2496 and a tangle of cheap Hosa cables. I'm going to have a pile of crap that looks like a permanent Christmas tree once all this gear is lit up along side my two JVC F10 receivers. Red, green, orange and blue lights will be a blinkin'. We're talking 5 way active. Yeah baby! (I'm going to need to wear sunglasses to listen.)

I've never tried any of the Behringer gear's A/D end, but always use the digital inputs, which it looks to me that a lot of the other equipment like the driverack doesn't offer. On the D/A end, the Behringer seems pretty decent. I just did a comparison of my DCX and DEQ analog outputs compared to a Denon 2200. I preferred the Behringer, although the difference was small. I have read reviews that were critical of the Behringer sound when using the analog inputs. Maybe that's where the problems are happening for some. Also, isn't live audio mic. feed much harder on equipment than just playing recordings? I could see how an inferior A/D could fall on it's face with a highly dynamic, unconditioned live signal coming in.

I vaguely remember the episode. I can't remember quite how it worked though. Did the bird's head and beak resonate, or did he just sing the tune?

Looks interesting. I only see speaker outputs for two channels though, unless those connectors that look like phone jacks are meant for the surround and center chanels.

It's true, puttying the horns didn't make much of a difference, although there really did seem to be a wooden "tock" sound I could distinguish when I was running the active crossover, and the putty seemed to get rid of that. The putty certainly won't "tame" the horn, since the coloration I at least imagined hearing was actually a rather mellow sound. The putty is gone now and the stock crossovers are back in place.

---------------- On 6/24/2005 8:33:43 AM colterphoto1 wrote: I'd buy them myself if they were closer. Michael ---------------- I just made an offer on Audiogon to sell these speakers for $1000.00 if the buyer will cover shipping. I'm offering you all the same deal. If you want to pick them up yourself, the same $1000.00 will still get you these beautiful Maple RF-7s. You can pay yourself for the shipping!

---------------- On 6/26/2005 3:46:00 PM tofu wrote: you can't take them out of the boxes? ---------------- I wouldn't transport them out of the box if you don't have to. It'd be a shame if they were dinged up before you even got them home.

I just happened to have rented a mini van when I picked mine up. You might be able to get one speaker in the box in the back of the Corolla. I would find somebody with a van or truck to help you.

Eugene is becoming a Klipsch hotbed!

They are indeed beautiful, gives me a lump in my throat when I think about 'em leaving. I didn't know the maple finish isn't available any more.

It would be shocking, or perhaps pleasing if it weren't for the fact that some invisible person is wearing them.

I got mine from The Goodguys. I paid $2000, couldn't wait, and didn't want to have them shipped from Brandnamez after hearing bad stories. But at least I got 2 1/2 years interest free on the speakers and a Canon Digital Rebel. Both great products.

Looks like a nice set of shorts. Very revealing.

I've got a nice used set of RF-7s for sale. Maple. No dings in the drivers. Never even close to overdriven. They're in great shape. I'll post some pictures if you are interested. RF-7 For Sale