Connecting monoblock tube amps to single subwoofer.


Hi all,

I have added a REL5TX sub to my system which is driven by VTL225 monoblocks.Currently the sub and amps are connected via the low level outputs on my preamp. I would prefer to use the high level connection to the REL by direct  connection to the the VTLs. I am concerned about creation of a ground loop that will cause hum on the system. I have been told that the ground loop can be avoided by running a ground wire directly between each amp. Is this a possible solution, and if so, where / how should the ground "jumper" be connected to each monoblock?

Many thanks in advance for any comments or suggestions.

rbanathy

 

ieales's avatar

ieales

953 posts

 

I figured REL knows their products a lot better than I do. 

@ ieales:

Possibly.

 

***********

Oh no sir, Not "possibly" but absolutely.  I can assure you that REL does indeed know their product a lot better than I do.  :)

One more thought which has usually served me well is to apply the principle of  Occam's Razor.  I paraphrase: "Generally the simplest answer is the best answer."

Not always. of course, but often enough. YMMV.  :)  And  of course, some anal-obsessive audiophiles are likely to surely disagree.  :)

OTOH, I'm with daveyf, I eventually got a second sub, even before swapping my mono tube amps for a tube integrated.

the addition of a second sub is exponentially harder to set up, with the blend and the correct positioning, than just one sub.

 

Nope

There are but two kinds of people in this and other worlds, the yup's and the nope's

Connecting monoblock tube amps to single subwoofer

Hello to all, and Happy Friday.

I connected the high level outputs of the VTL monoblocks to the REL5TX. The high level connection was made by running the red and yellow wires separately to the positive terminals to each monoblock, and connecting the black wire to the negative terminal on one of the amps.Happy to report that, at least in my system, no hum. Results may well be different with other components (I run the VTL MB 225 monoblocks, driven by a Rogue 99 Magnum pre) Completely happy with the performance, and hope this may be a solution for others with a similar setup.

@ps   +1000

 

 

@ieales   I guess that depends on how you want a pairing to sound, if you just plop them down anywhere, yeah you are right... no problem. ( Nope). OTOH, IF you want an invisible blend with your mains...then yup! 🤔