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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

Showing 2 responses by rbanathy

rbanathy's avatar
rbanathy OP
13 posts
 

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.

rbanathy's avatar
rbanathy OP
13 posts
 

Thanks to all for the suggestions. I will be tinkering with various connection  options and will provide update afterward.

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