LFE vs High-level subwoofer connection, for FIDELITY
Simple as it sounds. What subwoofer connection method offers higher fidelity, and why? The LFE, 75 ohm unbalanced RCA cable. Or high-level, speaker wire to the binding posts of the amp. I am running 2 KEF KC92 subwoofers to a Soul Note A-2 Ver. 1 amplifier.
Grok Ai states it matches your speakers tonal balance, timing cues, and sonic signature, because it shares the same signal path through the amplifier that your speakers sound travels through. It’s also a great way to get tube or amp sound into your bass region. My LFE outputs from my Khozmo Acoustics pre-amp, bypassing the amplifiers elite and favorable sound. The PS audio subwoofer had not been released yet or I’d have swoope those up, instead of the KEFs.
Also, has anyone heard that it is straining or damaging to a truly balanced, direct coupled amplifier to use high level inputs? This was mentioned to me and I can’t recall how reliable a source it came from.
@kr4 ”getting tube sound in the bass region” I am using bookshelf speakers, ELAC S503 ‘s, and they don’t have the strongest bass. I also have a really nice tube preamp, with real good NOS Raytheon and Mullard tubes. I really wanted to hear what tube changes affected what in the bass region. Hence. I wanted the subs signal feed, at the very last part of my component signal path, so I’d get the flavor of the tubes. |
@bartsw im looking at an anthem SA35 to get Dirac live in a system, to compare to my reference system, Cuz Dirac works so damn well on my Onkyo AV. BUT audiophiles usually scoff at that. And idk any balanced component I could put in my component stack, that has room correction. Minus $10k+ preamps like the Trinnov Amathyst that have room correction |
@toddalin that logic would then affect both connection types, right? So obsolete |
The "extra fidelity" from speaker level connections is some extra foolery propagated by the REL guy... If the preamp has xlr pre-outs and the sub takes xlr input...I would go with those and call it a night...If that's not possible, use the rca preouts and don't worry about it. I'll eat my hat if anyone on this forum can tell the difference.
Subs with built-in dsp can add a tiny bit of lag....it was discernible on some older subs with built-in dsp..if you didn’t have the ability to delay the main speakers to compensate (as would be the case in a purist rig). It had gotten better these days.
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