LFE vs High-level subwoofer connection, for FIDELITY

Night & Day difference in my system between low level and speaker inputs.

The difference is in the tonality and integration with the mains. Via high level you can’t tell there is a sub playing at all on my system. 
via the low level, the tonality did not match and the bass  sounded disconnected from the music. My amps are type 45 monoblocks. I’m sure they impart a specific sound across the board.

When I tried it, I expected it to be a 6 in one hand-half dozen in the other type of situation. It wasn’t. 

i remember one YouTube reviewer who had his sub configured via the low level inputs because it sounded better. He wasn’t a tube guy.

Fortunately it’s really easy to try. For me it involved buying long rca connectors to try, but they are now sitting storage. which is just to say you too should try it for yourself. It’s part of the fun.

jbuddha882 OP wrote:

@kr4 I’ve got the same experience as the other responder. My sub has eq knobs, low pass filters and room gain filters on the back panel. So my bookshelves roll off at 50 hz, so I set the sub to 60 hz and under. Even on high pass, the sub filters it 

Granted and, many years ago, that would be acceptable, assuming you have a tool to measure and analyze what's going on. Nonetheless, there is still no control of the low end of the main speakers and there is considerable overlap between them and the sub(s).   You should try, if you can, the Arcam SA35 or similar.

Guess you never had a mic, spl meter or anything....Gain and phase adjustment/setting will be different for each connection type....before you started to compare any diffaw-rances.

Night & Day difference in my system between low level and speaker inputs. The difference is in the tonality and integration with the mains. Via high level you can’t tell there is a sub playing at all on my system. via the low level, the tonality did not match and the

The "extra fidelity" from speaker level connections is some extra foolery propagated by the REL guy...

Nonsense. Paul McGowen also highly recommends High level connection as does anyone in the world of subwoofers!!

It's so simple even a caveman should be able to understand. Your amp has a dynamic characteristic. High level connection you will get that. If you only connect to the pre-amp you bypass the amp and don't get what your amp is putting out.

If you want FIDELITY this is the best way..BY FAR!

I've tried both methods and prefer the high-level connection with my current subwoofers.