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  1. #1
    AR Junior Member sgt bass08's Avatar
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    hooking sub to stereo Integrated Amplifier and pre/power amp

    Hi guys could someone tell me how do i go about hooking a subwoofer to a stereo integrated amp and also to a pre/power amp.ive been looking at some amps and the stereo and pre/power amp dont have sub pre out puts . i hear you can hook up your sub to the back off the cd player line out puts would that be a good way ???
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  2. #2
    Suspended markw's Avatar
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    first, answer two questions.

    Is is a powered sub?

    What I/O options does the sub offer?

    theoretically, you can connect it between the CD's output and the amp's input but you 'll have to control the sub's volume on the sub, not the amp. Could be cumbersome.

  3. #3
    AR Junior Member sgt bass08's Avatar
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    hi markw yes its active subwoofer and im looking for a stereo amp something like a nad wich dont have sub pre out puts .
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  4. #4
    Suspended markw's Avatar
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    last chance

    how about question # 2?

    Now you've created the need for a question Number 3 : What are the I/O options on the amp setup you are using?

    suggestion: If you expect us to read, comprenehend, formulate, and compose understandable answers to your queries, at least have the decency to take the time to think them out first, word them coherently, and provide the needed information. Guessing games get tiresome and you've been here long enough to know better. Dunno about others but for me, prying info out of you is getting old.

    If your amp had pre-outs and main-ins you can insert the sub between then, assuning the sub allows that. To determine that, you must answer question # 2.

  5. #5
    AR Junior Member sgt bass08's Avatar
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    Quote Originally Posted by markw
    how about question # 2?

    Now you've created the need for a question Number 3 : What are the I/O options on the amp setup you are using?

    suggestion: If you expect us to read, comprenehend, formulate, and compose understandable answers to your queries, at least have the decency to take the time to think them out first, word them coherently, and provide the needed information. Guessing games get tiresome and you've been here long enough to know better. Dunno about others but for me, prying info out of you is getting old.

    If your amp had pre-outs and main-ins you can insert the sub between then, assuning the sub allows that. To determine that, you must answer question # 2.

    My bad lol i should off told you a bit better i looking for a stereo or pre/power amp and i wont to hook it up to a active subwoofer .ive been looking at the mighty nad C370 amp but its got no sub pre out puts .so whats the best way to go about it.i hope that explained it better for you markw
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  6. #6
    Suspended markw's Avatar
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    From my previous post

    Quote Originally Posted by markw
    If your amp had pre-outs and main-ins you can insert the sub between them, assuming the sub allows that. To determine that, you must answer question # 2.
    Bye now...

  7. #7
    AR Junior Member sgt bass08's Avatar
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    markw stop been rude Lol .there so many stereo pre/power amps without sub pre outs but on a HT amp they always have 1 or 2 pre out puts why is that.?

    Also what is the different from hooking a sub to a cd line out put and what you just said to a proper sub pre out .?
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  8. #8
    AR Junior Member sgt bass08's Avatar
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    Quote Originally Posted by markw
    Bye now...

    Lol my sub as line level inputs left right but markw all subs have the same phono left right inputs m8.
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  9. #9
    _ Luvin Da Blues's Avatar
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    Quote Originally Posted by sgt bass08
    Also what is the different from hooking a sub to a cd line out put and what you just said to a proper sub pre out .?
    How are you going to control the volume of the sub???
    Back in my day, we had nine planets.

  10. #10
    Forum Regular audio amateur's Avatar
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    What you need is a pre-out on your integrate or a pair of them on the the pre-amplifier. I believe the Nad has amp & pre stages connected via a pre-out and a main-in on the rear of the unit. I don't know if it has a second pre-out though. You could always use y splitters, but I wouldn't recommend that.
    If your sub has speaker level inputs, you can also connect it in parallel to the speaker outputs on your power amp/integrated amp with a second pair of speaker wires.

  11. #11
    AR Junior Member sgt bass08's Avatar
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    Quote Originally Posted by Luvin Da Blues
    How are you going to control the volume of the sub???


    the subwoofer will have its own volume on the back .
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  12. #12
    Forum Regular audio amateur's Avatar
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    Quote Originally Posted by sgt bass08
    the subwoofer will have its own volume on the back .
    Believe me it won't be fun getting up to change the subs volume every time you change the main volume. Might as well not have the sub

  13. #13
    _ Luvin Da Blues's Avatar
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    Quote Originally Posted by sgt bass08
    the subwoofer will have its own volume on the back .
    So your going to adjust it every time you play with the volume of your main speakers???? (sorry, just wanted to use this smiley)
    Back in my day, we had nine planets.

  14. #14
    Suspended markw's Avatar
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    No, they don't. That's why I asked to begin with.

    Quote Originally Posted by sgt bass08
    Lol my sub as line level inputs left right but markw all subs have the same phono left right inputs m8.
    A lot only have one line level input which makes them virtually useless on a stereo system without additional invenstment.

    Many do have two line level inputs, and many also have line level outputs. You didn't mention them so I assume your sub lacks those outputs, right? All these things are important when asking how to hook up a subwoofer.

    Question # 2 was not put there just to be, as Uncle Benny would say, a plick.

  15. #15
    AR Junior Member sgt bass08's Avatar
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    Quote Originally Posted by audio amateur
    Believe me it won't be fun getting up to change the subs volume every time you change the main volume. Might as well not have the sub

    Yeah thats true lol because hooking a sub to cd player line out puts you would be stuck with the volume lol.so on the nad amp if i hook it up like markw said the volume on the nad amp will turn my sub up without having to get up . thanks for your help guys
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  16. #16
    Forum Regular audio amateur's Avatar
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    If you use line level inputs/outputs on your sub, I believe the lows on your speakers will be rolled off as a consequence of a filter in the sub.

  17. #17
    Suspended markw's Avatar
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    That presupposes he has both line level inputs and outputs.

    ..which hasn't been ascertained yet.

    Quote Originally Posted by audio amateur
    If you use line level inputs/outputs on your sub, I believe the lows on your speakers will be rolled off as a consequence of a filter in the sub.
    Most likely, and he'll need two sets of interconnects to/from the sub but this does offer the advantage of saving the main amp and the speakers from dealing with the heavy demands that low. low frequencies pit on them.

    Another option, which is the ONLY way if he doesn't have line level outputs on the sub is to run the sub amp in parallel with his main amp and maintain the full range through his main amp and speakers, but this won't alleviate any strain that the bass puts on on them. I run mine this way but it takes forgiving mains, a lot of clean power, and a bit of adjustment. All this requires is a pair of MMF "Y" connectors to maintain the connection between the pre and main amps and an interconnect for the one-way trip to the sub. And, of course, a balancing act when setting it up.
    Last edited by markw; 04-03-2008 at 07:43 AM.

  18. #18
    Ajani
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    Quote Originally Posted by sgt bass08
    My bad lol i should off told you a bit better i looking for a stereo or pre/power amp and i wont to hook it up to a active subwoofer .ive been looking at the mighty nad C370 amp but its got no sub pre out puts .so whats the best way to go about it.i hope that explained it better for you markw
    The NAD C370 has 2 sets of Pre-outs, so just connect one set to your sub.

  19. #19
    Forum Regular audio amateur's Avatar
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    Quote Originally Posted by Ajani
    The NAD C370 has 2 sets of Pre-outs, so just connect one set to your sub.
    The problem is I think the second one is only adjustable via the knob next to it

  20. #20
    Ajani
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    Quote Originally Posted by audio amateur
    The problem is I think the second one is only adjustable via the knob next to it
    Nope, both are adjustable by remote....

    I think he was refering to the volume control on the sub only being adjustable by the knob next to it....

  21. #21
    Forum Regular audio amateur's Avatar
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    Quote Originally Posted by Ajani
    Nope, both are adjustable by remote....

    I think he was refering to the volume control on the sub only being adjustable by the knob next to it....
    No I wasn't referring to the sub, but the second pre-output on the C370, which is described as being 'fixed' & shows to be adjustable via a knob on the rear of the unit, however I don't know if the master volume affects its signal.

  22. #22
    _ Luvin Da Blues's Avatar
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    Quote Originally Posted by audio amateur
    No I wasn't referring to the sub, but the second pre-output on the C370, which is described as being 'fixed' & shows to be adjustable via a knob on the rear of the unit, however I don't know if the master volume affects its signal.

    Could that be for level matching of different components (amps)?
    Back in my day, we had nine planets.

  23. #23
    Ajani
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    Quote Originally Posted by audio amateur
    No I wasn't referring to the sub, but the second pre-output on the C370, which is described as being 'fixed' & shows to be adjustable via a knob on the rear of the unit, however I don't know if the master volume affects its signal.
    Hmmm, as far as I know both pre-outs are variable...

  24. #24
    AR Junior Member sgt bass08's Avatar
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    Hey guys i think ajani is right the sub should just hook up to the pre-outs but i dont know about the nob thing at the back but ill let you know when i get it .
    I Perfer To Feel Bass On My Chest Then Not To Feel It At All

  25. #25
    _ Luvin Da Blues's Avatar
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    Quote Originally Posted by sgt bass08
    Hey guys i think ajani is right the sub should just hook up to the pre-outs but i dont know about the nob thing at the back but ill let you know when i get it .
    I'll go one better. I KNOW Ajani is right.
    Back in my day, we had nine planets.

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