Best method to connect subwoofer to amp


I just finished a great post about my speakers and amp clipping sensitivity, impedance etc. highly educational, as I am a rookie in this hobby just starting out. One recommendation coming out of that discussion was to contact my manufacturers. I have a Jamo c 80 sub (1800 watts and with an adjustable crossover from 0 to 200hz) for two-channel stereo. the c80 has binding posts for speaker cable connections for spades and banana plugs. The c80 also has" Line in left/LFE and right.. My integrated amp is a Technic SU-G700 and its manual says to connect the sub to its pre-out left and right connections.
Listening to Paul McGowan ( PSAudio poobah) he says the best way is to run speaker cables from my amp to the speaker terminals on the JAMO which is my current practice. He says this ensures the same signal going to my main speakers (Canton 9k stand-mounted) and the sub are the same helping them disappear. As noted I am currently using that method and indeed my subs vanished.
However when speaking to JAMO the rep said the best way is to connect the amp and sub is through the Preout of the amp to the Line input Left /LFE and right of the sub, my Technic manual also says this.
There is no high pass filter involved in my system the integrated amp sends the full signal through the pre-out not confirmed by Technic but from what I’ve read. I mention this as my amp is only 70 watts and I would have loved to separate the bass to be driven exclusively by the sub so my main speakers could be relieved of that duty and as I understand it two benefits would occur 1 my stand-mounted Cantons would no longer have to play the bass and 2 more power would be available for the cantons.
It should be noted the canton9 k have two sets of speaker terminals on set for medium and high frequencies and another set for bass. I will not be buying a separate highpass filter at this time.

Given the above which is the best method (for musical benefits) to connect the sub or does it even matter which of the two options I use given my system?
Is one method safer to use than the other?
Am I missing anything I should be aware of?
Thank you for your help
Scott


scott22

Showing 5 responses by scott22

Imhifian  
Thanks for the advice! I will definitely look into this. I appreciate your time.
Pragmasi  off this topic you mention "attenuating" the signal. Which rases another question I have   The Technic has an attenuation option of 20 db on its volume control. If attenuation is OFF the volume control reaches clipping levels at about 1/2 a full turn, if the attenuation function is ON   the volume control can be used to a full turn before hitting clipping levels. I keep it on so I can have more control over the volume level.
 Do you or anyone else reading this know if attenuation at the volume control level has a negative effect on detail, soundstage, imaging. I would not think so but what do I know.  
Mijostyn
Thank you for the advice and your time I will save this information. I'm one of those vanishing middle-class retired guys. I used the pandemic relief $$ , sold my existing system from 1980 and some camera gear to buy newer gear, from local sellers on Audiogon. I wanted to give stand speakers a shot as wife was not fond of the big Snells(sad to sell them). 
I must admit the new system just blows away my old gear in all respects except volume which is still fine it is plenty loud the Jamo c80 came with the Cantons( love their sound) and are just OK as filler in my compromised(read married) listening room. Chairs go here, sofa there, plants up there, the coffee table... I have moved that out for a clear line of sight to the  speakers.
 I digress to the point I have to save $$ and was looking to buy a Node 2i next, next year.
Who knows what will happen in these dark times as the second wave is creeping back to the northeast. be safe stay well. 

Ozzy 
Nice information will check in to them some look affordable. My goal is to stop the low bass from playing on my stand-mounted speakers so they can concentrate their efforts on the mid bass on up.