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RickiRed · 04-12-2007, 12:46 AM

Quote:

Originally Posted by John Garcia

Your center may be your limiting factor there, because with the RF-3s, you should be able to handle a 60Hz x-over. I'd try it out and see how the center handles it; it may be a bit too much bass for it to handle. 80Hz should be OK for your setup though.

You are not completely removing sound below 80Hz, but rather decreasing it as you go beyond 80Hz and the opposite occurs for the sub - though the low pass is generally steeper than for the mains (~12db/octave for mains, 18-24 for the sub). That means your mains will still be getting down to at least 40Hz, just at a much reduced level and with a 60Hz, you can expect some output down to 30Hz. Like I said, try it out and see if you like it and if it strains; if it does, put it back to 80Hz

I got started in car audio as well

Gotcha! I only used 60 because I wasn't sure what the selectable points were. I actually have the center set as small so it has been working well. But now that I am here at home in front of the TV and have my manual with me I know now that it is 80, 100, and 120. I have the the mains set at 80Hz in the receiver. On the back of the KSW12 I have the lowpass crossover set at around 70. I did this because I wanted to allow the fronts to begin thier roll off before the sub kicks in. I also didn't want there to be too much overlap with the sub and fronts. Is this not right and what would be your suggestions. Please forgive me for confusing everyone earlier but I do understand that the crossover doesn't actually "cutoff" the freq. below the x-over point you select but as John R. puts it, it rolls it off.

John G. I am going to play with large and small settings and see what comes of it, thanks for the input.

John R.

Looking at the manual for my receiver it says:

-Crossover Frequency-
When "Subwoofer" is set to "yes" at the "Speaker Configuration Setting" set the frequency (hz) belowwhich the bass sound of the various speakers is to be output from the subwoofer (the crossover frequency)
For speakers set to "small", sound with a frequency below the crossover frequency is cut, and the cut bass sound is output from the subwoofer instead.
NOTE:For ordinary speaker systems we recommend setting the crossover frequency to 80Hz. When using small speakers, however, setting the crossover frequency to a high frequency may improve frequency responce for frequencies near the crossover frequency.

-Subwoofer mode-
The subwoofer mode setting is only valid when "LARGE" is set for the front speakers and "YES" is set for the subwoofer in the "Speaker Config." settings
When the "LFE+Main" mode is selected, the low frequency signal range of the channels set at "LARGE" are produced simultaneously from those channels and the subwoofer channel.

With all the info and manuals I have for the RF3's and my Denon I don't have the cutoff slope for the built in crossovers in the denon nor the RF3's so that is one area that I am just working blind. Klipsch does give a freq response of 37Hz-20kHz±3dB but that is not doing me much good if I am not sure how steep the cut off is.

John R. you make very good points about the brick wall and I by no means think that. I think my problem earlier was that I was being far to general when a more detailed answer was needed. However it is still good to know that I am not too far off on my thinking after very good posts by the both of you.

OH yeah you have some very nice equipment.