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Just starting out and need advise for sub woofer connection

Hi I’m a rookie you guys are the big leagues so I am asking for your help.
I recently purchased a Canton K9 bookshelf speaker and stands. This speaker has a set of speaker cable posts for high and midrange and another set for the bass with jumper bars attached to the two sets of posts. Adrian the seller was so kind to include a Jamo c80 sub in my purchase. Which I hooked up as Paul McGowan the PS Audio poobah suggested by running speaker cable from my amp to the c80 cable posts for both left and right channels. Given this set up since both my main Cantons and the sub are receiving bass frequencies and both are playing them, this seems to be a duplication of effort and seems wrong. I was wondering could I, should I remove the jumper cable from my Cantons and attach my speaker cable to the terminals marked high and midrange? I assume doing so stops my Canton drivers from having to play bass frequencies. That Would free up these speakers from bass responsibilities? Is that a good thing? Should I do this ? and what must I be mindful about if I do this? Do I have to do anything to my subs crossover a knob reflects 40HZ to 200HZ  The canton literature mention a cross over at 3000 hz which to me woulld mean at the very least the difference between 200HZ and 3000 hz would be lost or should I forgetabout using the sub? The c80 also has what look to be RCA connectors titled Line left and right in and left and right out. Finally there is a LFE connection which is the same as the RCA left in. Thank you in advance for your help. Regards Scott
scott22
fuzztone's avatar
fuzztone
5,635 posts
 
I wish I could help but the C80 manual don't git it. It sez hook it to the amp outs.. Fine. Then what? No mains?
You can not parellel them without a padded speaker switch. The only sub I have hooked to an amp output (outside) is fed by a 5 pair switch. Then the tiny main speakers for this set is fed from the sub out which is crossed high. All my other subs are hooked via line outs. This makes more sense since they are powered by their own amps.
I do not see ANY of those options for you.
Unless your amp has A & B speakers, you need one of these:
https://www.amazon.com/dp/B00DIGD604/ref=cm_sw_r_cp_apa_i_rvMdFbNSJ95NJ
Make sure it's rated for your power.
Run the mains full range as intended.
bkeske's avatar
bkeske
5,597 posts
 
The C80 Manual does not state hooking up the sub via the ‘main outs’, but the pre/integrated ‘sub outs’ or LFE. Or, via the high level speaker terminals, which I would recommend, personally. The last thing I would do is use LFE for music. Home theater? maybe, but that’s a whole nuther can of worms.
fuzztone's avatar
fuzztone
5,635 posts
 
Does the sub have line in?
I can not tell, I can find no photos. If so, you amp setup is all important. I've added RCA's tapped to the volume pot on an ntegrated before.
More info necessary to remediate.
bkeske's avatar
bkeske
5,597 posts
 
Yes, the sub has both R&L line-in or LFE using the left channel. The manual is clear. It also has RCA outs to ‘daisy chain’ to a second sub.

Or, simply use the high level speaker terminals with an extra set of cables from the amps terminals feeding both the Cantons and Jamo. easy peazy.
scott22 OP
266 posts
 
First let me thank all of you for your kind responses. .Bkeske   a special thanks for your detailed response and guidance which also reaffirming my belief.  Jamo manuals are less than adequate.   I will reset my  Jamo sub to 40 hz.and go from there. I currently set it at 80hz, I believe as again  Jamo does not provide much guidance the knob that controls the frequency has  40 hz at one extreme and 200 Hz at the other then dots which mark off some number but not in equal amounts like say 20 hz increments. Currently, the Jamo does disappear my wife would like all of it to and often me with it lol. By the way my the Cantons have a wonderfully detailed sound not at all fatiguing but oh so revealing at lest to my old and inexperienced ears.  Thanks again    
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