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Tubes and Subwoofers

Are there any here that run tube integrateds/amps with subwoofers?

My setup, room, preferences incorporates a sub with sealed bookshelves to get that sense of space and bottom end.

My gear has preouts to connect the subwoofer, but am considering switching things up.

Does anyone use speaker level connections from their tube gear to a sub?  Any downsides/concerns with impedance loads at the tube side with speaker level connections?  Maybe it's gear specific?

TIA

erikt
pdspiegel
26 posts
 

I also use a REL sub (T/7x) to supplement stand mount speakers driven by a tube amp.  Sub speaker level inputs are high impedance and won’t load a tube amp output.

corelli
1,022 posts
 
You should have no problem proceeding with your plan. I have small pair of REL's connected to a small SET with great results.
knotscott's avatar
knotscott
1,015 posts
 

I used the outputs of my tube amps to drive the high level input of my active subs for quite a while without issue at all.  The sub's amp is completely separate.

hilde45's avatar
hilde45
5,117 posts
 

Sure do! I used to connect the subs to a second pre-out on the tube preamp but now I take the signal directly from the amps.

Possibly helpful: https://youtu.be/Wo5TwacV7-c?si=jf3xRhWFgk_WD1BX

[AI summary: This video provides a comprehensive guide on connecting a subwoofer to a stereo system. It covers various connection methods, including speaker-level and line-level inputs, and explains how to adjust settings like gain, crossover, and phase for optimal sound quality. The video also discusses the benefits of using multiple subwoofers and offers tips on placement for the best listening experience.]

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