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December 5, 2008 - 12:06pm
#1
Two systems one sub.
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I can't imagine what you are trying to do, but if you won't be running both receivers at the same time I guess you could just plug both LFE outs into a Y adapter at the sub input. If you inadvertantly do run both receivers at the same time and both sources have LFE's and send a twin signal to the sub I'm not sure if damage is possible- or just very bad sound.
I didn't mean to post in here, sorry. I want to get a pair of maggies mmg but i don't think i should integrate them into my surround. Their range doesn't go below 50hz and I may decide to use them with a sub. BTW Does anyone think H/K would be a good receiver for these magnepans? I can't afford tube or anything over a few hundred.
No apologies necessary! You should post your Maggies/receiver match question in the Entry Level or Speakers threads to get the best response from those with experience with this combo. Welcome to the forum.
You can combine two outputs, but not with a standard Y connector. Even if one system is turned off it will likely load the other and create distortion. You need to combine the two signals using 10k resistors. This is very simple to do if you can solder. Or maybe you have a friend who can solder?
--Ethan
Sorry to sidetrack here - but Ethan, good response and can you or anyone else advise on a related thing -
On my secondary system I ran out of inputs and I have a cd player and a dvd player sharing 1 set of analog inputs into an integrated amp, via a Y connector. No problems there that I have heard, but is there any issue with loading in that set up? I rarely have both cd and dvd turned on at the same time...
It's never a good idea to connect two outputs together without isolating resistors, whether one device or the other is turned off or not. This will almost always increase distortion, though by how much depends on a lot of factors. And distortion might rise only at higher levels where it can be more difficult to notice.
--Ethan
Thank you. Do I bridge a resistor between the output jacks of the cd player and the dvd player-- one resistor each between the left and right channels?
I did that for a while and it worked fine. My sub had two RCA inputs so I just ran the sub wires from both amps.
Why was it set up this way? I had in one part of the room my A/V setup and in the part my high-end stereo setup (it was a fairly large room). At the time my stereo setup did not have full range speakers so I needed that little boost to get below 45hz. I never had any interference or issues whatsoever- again obviously I didn't run both systems at the same time. Now I have different rooms and the sub is A/V only and have full range stereo speakers for music only.