Originally Posted by Brian B
(2) If you use an integrated/receiver with jumpers then you need to feed the signal back into the amp somehow. This means you need to feed the signal into the sub and then out of it (which will utilize its high pass filter at whatever setpoint it has--assuming it isn't adjustable and assuming it doesn't degrade the sound in any noticeable fashion).
My subwoofer has two sets of line-level outputs, one high-passed for satellites and the other full-range (labeled "Link") for connection to another subwoofer. I wouldn't expect either would degrade the signal in any audible way.
Originally Posted by Perry R
According to the manual of the Rotel ra985bx.......similar to the 1570.....?
Preamp/Power Amp Jumpers 18
These connectors, labeled ”Pre Out” and “Main In”, are normally connected by a set of solid metal jumper connectors. They provide a convenient insertion point for virtually any type of signal processor. To use these connectors, pull out the jumper connectors. Using high quality cables, connect the “Pre Out” connectors to the inputs of the signal processor. Connect the outputs of the signal processor to the “Main In” connectors. One of the most common uses for these connectors is to incorporate a surround sound processor into the system. Typically the front channel outputs from the signal processor are connected to the “Main In” of the RA-985BX. The other outputs from the signal processor are connected to other power amplifiers and speakers."
This is exactly what I thought those jumpers did. As I mentioned above, it would seem as though I could insert a subwoofer into the same path, and it would siphon off the low frequencies. Thanks for the reference.
Originally Posted by Nethawk
Option 4. Stick with an AVR, even for 2 channel. Why spend more for a system that does less? Do you expect better audio quality?
For starters, I use an A/V preamp, not a receiver, and have so for nine years, because I hate the way almost all receivers are laden with gimmickry. But your point applies to an A/V preamp just the same. (And, yes, I know some A/V preamps are overloaded with features, but mine certainly isn't.)
The answer is that I listen to two-channel music about 90 percent of the time, and I want to simplify and consolidate -- fewer boxes, fewer cables. The idea of ditching the surround and center speakers and their associated cables is very appealing to me. Plus I want to use a computer as my primary music source (lossless), so I need a USB input. (And, yes again, I'm aware that I could add an external DAC, but that'd be one more box, albeit as smallish one.) I'd consider another A/V preamp with a USB input, but I don't know of any yet. Considering USB inputs are starting to show up on AVRs, its quite possible that they'll become standard on A/V preamps as well.
Changes in "sound quality" (however you define that) have nothing to do with any of this.