Assistance With Sub Connection Options for Budget Set-Up

[cichington]

Hello,

 

I am currently in the process of a budget 2.1 set-up for the TV and a record player in the living room.  Currently I have the SMSL AD18 taking an input from my TV via optical and record player via AUX and outputting to a pair of Klipsch R-41M Speakers.  This set-up satisfies my needs of sounding better than the TV speakers, and having a small footprint (The SMSL is tiny).  I am wanting to add a subwoofer into the mix as the speakers lack a bit on the low end, and I want some more boom when watching movies.  I am a little confused as to what I am needing for set-up.  This amp states the COAX doubles as a Subwoofer output as seen below:

I am a little skeptical about this as it seems it won't be the cleanest signal to the sub.  My question is should I be fine using this as a connection to sub and getting a sub with these inputs:

 

Or should I get a sub with high-level inputs/outputs as seen below, and not use the sub out on the amp (I will not be getting a Polk Sub, it's just for reference):

 

Any input on the matter would help as there is not much information about the output on the amp that I could find.

 

Thanks!

[Entropy.]

9 minutes ago, cichington said:

Hello,

 

I am currently in the process of a budget 2.1 set-up for the TV and a record player in the living room.  Currently I have the SMSL AD18 taking an input from my TV via optical and record player via AUX and outputting to a pair of Klipsch R-41M Speakers.  This set-up satisfies my needs of sounding better than the TV speakers, and having a small footprint (The SMSL is tiny).  I am wanting to add a subwoofer into the mix as the speakers lack a bit on the low end, and I want some more boom when watching movies.  I am a little confused as to what I am needing for set-up.  This amp states the COAX doubles as a Subwoofer output as seen below:

I am a little skeptical about this as it seems it won't be the cleanest signal to the sub.  My question is should I be fine using this as a connection to sub and getting a sub with these inputs:

 

Or should I get a sub with high-level inputs/outputs as seen below, and not use the sub out on the amp (I will not be getting a Polk Sub, it's just for reference):

 

Any input on the matter would help as there is not much information about the output on the amp that I could find.

 

Thanks!

I beileve coax should be fine. I'm not very experienced with problems such as these, but I don't really see where coax wouldn't send a clean signal to the sub. 

On a side note, I'd try at least auditioning or demoing the r-12sw before purchasing it, there are people who say that klipsch rear ported subs have issues with port noise, and sometimes have problems with decay. 

[cichington]

18 hours ago, Brok3n But who cares? said:

I beileve coax should be fine. I'm not very experienced with problems such as these, but I don't really see where coax wouldn't send a clean signal to the sub. 

On a side note, I'd try at least auditioning or demoing the r-12sw before purchasing it, there are people who say that klipsch rear ported subs have issues with port noise, and sometimes have problems with decay. 

Gotcha, to my limited knowledge, i'd have to use a sub with high level input/output if I wanted to filter some low-end away from the speakers right? The SMSL AD18 does have some EQ adjustments I can make but I don't believe it has any filtering capabilities to what I've found online.