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How distorted with sub line in or speaker output

I thought about adding a sub, to my integrated amp...Thought about getting a sub and connecting the amp through the speaker line ins and then run speaker cables out to the speaker. The advisor at a store told me that the best way of connecting a powered sub would be to do it First and foremost through an RCA line in from a preout, Second through a speaker line in. He said that the sound was going to be fine, but not excellent if I chose to do it through the speaker line in.
The integrated I have is a 47 Labs Shigaraki integrated, which is known to provide an extremely pristine quality power output. The sub in question was a Infinity Intermezzo 2.1? The one with a 1000 watt class D Bash amp.
Any opinions, I would like to hear from.
bemopti123

Showing 1 response by megasam

megasam's avatar
megasam
798 posts
 
I always use RCA connections from preouts to sub.....not only is it simplier/cleaner installation, but who wants the extra cost of another set of speaker cables plus the extra connections to degrade sound of main speakers? Also since ICs used only to connect sub they can be cheaper cables than system ICs.

I use sub for 2 channel stereo and only to fill in bass below output of main speakers.....don't have any experience with Infinty subs, just general info given above.
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