Amp for lightspeed attenuator? = $1000 used

Thanks for the walk through George. I'm driving the lightspeed using a musical fidelity V-DAC, which is supposed to have an output impedance between 40ohm and 80ohm, which seems to be within the range you mention. (BTW: what is the right email address to use to buy another unit? I sent several emails to the one on your site but never received a response.)

As a complicating feature, I'm using Y connectors to split the lightspeed output signal so I can feed it to a velodyne SMS-1 bass management unit (which I use to drive two subs).

Poprhetor: I should have mentioned that I don't have high efficiency speakers (recommended 100-150W @ 6ohm) so it doesn't seem that the jolida's would work. I'll troll through the huge lightspeed thread for amp recs; the problem is that its information isn't so dense :)

I'm running the Lightspeed into a Dynaco ST-70 rebuilt by Will Vincent. Bought it straight from him through A'gon for just over $1,100. It has an input impedance of 470K ohms and input sensitivity of 1V. How do those numbers sound?

"Dddrrreee As a complicating feature, I'm using Y connectors to split the lightspeed output signal so I can feed it to a velodyne SMS-1 bass management unit (which I use to drive two subs).Dddrrreee"
You can get me on "georgehifi at optusnet dot com dot au"

As with any other system active or passive these "Y connectors and active subs" brings in another added equation to the impedance matching, of system compatibility.
If you use active subs, this makes the load to the Lightspeed and the source even more difficult, then I suggest a buffer after the Lightspeed like the "Burson 100 Buffer" which unfortunately is no longer available new, you may find one second-hand or another equivalent that is a pure buffer with no volume controls or selector switching on it.

Cheers George

I use a Lightspeed clone (Lighter Note by Uriah Dailey) with a Rogue Atlas. Not sure about the exact specs but they are working GREAT together.

Be patient and wait for a used Music Reference RM-10 MkII to come up for sale. You won't be sorry.