Keep your Cantons fully connected with the jumper. They go down to 25Hz. If the crossover is 3,000Hz, you lose most all of the speakers capability. The Jamo goes down to 20Hz with a lower cut-off at the sub of 40Hz. I would hook up as you explained via the high level speaker terminals. Then to start, set the crossover at the sub to the lowest setting of 40Hz and adjust the gain. Bottom line, you are going to have to experiment with the subs best placement within your room, and the gain while playing a dynamic recording. And, who knows, you may even try raising the cut-off higher at the sub. No two rooms are the same, so there isn’t just one solution to this.
But don’t worry about the speakers and subs ‘being redundant’, when you get everything balanced, the extra bass can make a nice difference and will help the Cantons, not take away from them. Again, you just have to experiment and find out what makes your Canton’s sound best with the additional bass from the Jamo. The key is for both to sound as seamless as possible, and not to know there is bass coming from the sub specifically. In other words ‘disappear’. If the Jamo is obvious, you have work to do with placement and settings.
I am being extremely basic here.
As far as the RCA inputs, does your preamp or integrated have RCA outputs for this purpose? Does it have LFE? Personally, for music, I would disregard the LFE completely. And simply do as Paul describes, and which you referred to.
You will have many other suggestions, but I would start as suggested above. Just don’t not lose the majority of your Cantons capability, actually you would be using less that half if you took out the jumper.
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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_rvMdFbNSJ95NJMake sure it's rated for your power. Run the mains full range as intended. |
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. |
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. |
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.
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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 |
@scott22
Yep you just have to play around with it. Sub positioning and adjustments in terms of cut-off and gain is not an exact science, as again, every room is different, and also the speakers you are 'marrying' them to.
As your Canton's dive down pretty deep, I would not think you want the Jamo set much higher than 60, and I'm just guessing, but lower is probably better. But again, gain and placement all come into play.
Im sure your wife would want them to disappear ;-) So, you may be more limited in it's placement. Just do the best you can, and try a variety of different things. Believe me, this could take a while, so be patient.
Also, for music, don't discount the feeling that the sub itself is not doing much. That can be a good thing, and turn it off, listen, then back on to see differences it may actually be making. Pick a good wide range dynamic selection. |
Sub setup is one of the most challenging in audio. All others in this post have offered excellent suggestions. Without the aid of components such as active crossover, room correction equipment, etc, your most usable tools are cutoff frequency and, most important, placement. As others have explained, sub placement is paramount. It can be the true meaning of trial and error. Many recommend the "crawl" technique. With the system running, crawl around the room until you reach a location where the bass sounds best. Then place your sub there. Only tried that once when I had my ex crawl around the room. One of the reasons she left among others. Joking aside...experimentation is the key.Good Luck.
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Sub placement with just one sub is so crucial (read: difficult) because of room modes. Moving the sub location around moves the modes around but does nothing to alter the fact of having those same few mode areas. Modes being areas where the bass reinforces and sounds too loud.
The main reason you want to run your mains full range is because they also produce modes, just the same way as a sub. Only difference being the mains need to be positioned for stereo imaging. Still they add two bass locations so the sub makes a third. With low bass more is always better.
However good you get it with your speakers and one sub, if you want really exceptional bass then try adding a couple more. With four subs it hardly matters where they go, all the different modes average out, and the resulting bass is so smooth, articulate and deep you can hardly believe it.
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+1 on the multiple sub sources.
I had no luck using a sub in a small (10x12 minus closets) room.
Bass got to boomy as soon as it was audible.
Tried four subs as millercarbon indicated.Great results. Fast, tight and articulate bass in a much greater listening area.
More sub locations also improves the midrange and openness of the sound stage.
Made that small room "sound" a lot bigger.
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When you do the craw or put the sub in your listening position do you shut down the main speakers, I would think so. Sadly I am limited to placement options, given wife factor. Multiple subs would not be heard over the distortion caused by my wife's screams followed by my untimely demise. |
