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Lets say I go with a top notch 2 channel stereo preamp, and relegate the processing to the source device (Blu-ray player, DVD player, etc). At the same time, I do not want my main speakers to be damaged by the .1 LFE bass transients -- they are relatively small monitors.
What options do I have ?
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If you are only using 2 channels than you will be taking the 2 channel sound from the player and there won't be a sub-channel as such.
I have run several such systems and found no problem at all with speakers, including monitors handling the sound.
2 channel home theatre is still a great experience as the quality of the sound is so much better tan through a TV's speakers.
If your system sounds good with music, it will sound good with your TV sound.
I tell you live news and sports feeds are something else as you pick up on all the background sounds.
I already have a SUB...it is a REL. The monitors are SF Guarneri Mementos. I also have a Krell HTS 7.1 processor. My idea was to get rid of the HTS 7.1 and replace it with a top notch pre, since I mostly listen to music. For movies, I am only concerned about the .LFE channel.
My question is, how do I manage the .LFE channel with a 2 channel preamp, without having any .LFE directed to the L & R speakers.
As Tom says, use the speaker level inputs for the REL. You will be running the Guarneri Mementos full range but they're simply going to roll off at low frequency levels anyway and they're a very well made speaker so their drivers shouldn't have problems with the low frequency side of things unless you really push the volumes.
If you've already got the Krell processor, however, I'd tend to keep it. It will definitely give you more options with the sub and with the Guarneris than a normal pre will do. You may be able to get a bit better 2 channel performance from a normal pre but you will also lose some performance quality with movies. You may lose some low end quality with music also since the Krell may do a better job of integrating the sub with the mains using the REL's low level input than you can do with the REL's high level input if you swap to a normal pre.
My preference, if it were my system and used for both music and movies, would be to keep the flexibility offered by the Krell processor. I can't see that approach losing much in the way of sound quality and it may actually gain some sound quality if you're also using the sub for music.
David Aiken
If you already have such good equipment I really wouldn't worry. Using the sub between the amp and the speakers is a fine 2 channel amp solution, but really why bother unless (1) you don't like the Krell or (2) someone offers you silly money for it...
And quit worrying about the LFE problem that doesn't exist.
-Tom §.
Put one after the preamp: the very low stuff goes to the sub (which is probably powered by its own amp) and the rest goes to the amp for your other speakers.
I do not want my main speakers to be damaged by the .1 LFE bass transients -- they are relatively small monitors.
How can these speakers be damaged by audio information they cannot reproduce?
If your dvd player has the digital audio processing then it should (but not in all cases) have the option to cut off low frequencies to your main speakers. You'd also help yourself by telling posters what dvd player, what preamp, and what speakers you are using (or plan on using) so folks who also own the same equipment can provide you with first hand experience help.
-Tom §.
It won't be a 2.1 system unless you add a sub so you do need to take kootenay's advice and add one if you want a 2.1 system. If you don't add a sub, you can use tone controls to turn the bass down a bit to tame any excessive bass and give the monitors an easier life but, depending on your preferred movie fare, you may find that approach a little on the aenemic side. There's nothing like a good bit of bottom end in the bangs when you're watching an action movie. If you're not going to go for decent bass, you're not much better off than if you forget about the speakers and simply plug the player into the TV and use its speakers. Good sound without the bottom end is not something I find overly satisfying for movies.
For sheer ease of setup, I'd be inclined to go for a reasonable quality receiver and let it do the processing. If you get a receiver with an auto setup function, it will balance the level and arrival times of the output from both the mains and the sub, and it will also give you the option of adding some audio delay in order to achieve lip sync if you run into problems there. Those options aren't available with most pre-amps and they definitely can be very useful and I find I get much better integration with my sub in my HT system where the receiver handles the crossover, levels, and arrival time compensation than I ever did when I used it in my audio system and manually balanced it with the main speakers.
David Aiken
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If a thing's worth doing, it's worth doing well
(Proverb)
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