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Connecting two REL T5 to a Primaluna Dialogue Premium HP power amp

I have a REL T5  and a T5i and want to connect both to my Primaluna Dialogue Premium HP power amp. My plan is to use the Speakon high-level cables, twisitng the red and yellow together and connecting the left sub to the left positive tap, and the right sub the the right positive tap.

Should I connect the black wires to the negative taps, or the grounding screw? 

Has anyone connected a Primalune Power amp this way? Does the combination of red and yellow wires on the positive tap make the REL's volume overly sensitive? I am connecting Nola Contenders that dig deep. I am concerned  the my sweet spot blending them to the REL's may be between a 'click', and I'll have to drop either red or yellow to reduce sensitivity.

stephenjess
gkelly's avatar
gkelly
983 posts
 

I would call somebody at upscale audio(909) 931-9686) And ask a service technician That question.

lanx0003
1,926 posts
 

Easy, and it follows the same principle as connecting left/right speakers since you are tapping into the speaker-level signal. This is from latest Rel manual for connecting two T/x subs in stereo mode.

If you don’t have a ground terminal or are running a balanced amp, simply leave the black wire disconnected.

doni
448 posts
 

Use the grounding screw.  Works for me.

stephenjess OP
8 posts
 

The Primaluna Dialogue Premium HP power amp does not have a grounding screw. I used the 0Ω taps (black). 

From ChatGPT,

On the PrimaLuna Dialogue Premium HP, the speaker terminals are:

  • 0 Ω (black) = common return of the output transformer secondary
  • 4 Ω (red)
  • 8 Ω (red)
  • 16 Ω (red)

This is a conventional transformer-coupled tube amplifier arrangement, and REL connections are routinely made to that common terminal on tube amplifiers of this type.

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