[ryno]

Is there a problem with splitting the signal after a passive preamp? What do I need to look out for? One pair would go to a full range amp, the second to a sub, possibly through an external xover/eq, so I need low level not high. Or, is there a passive with dual outputs?
Thanks Ryan

[Steve]

Is there a problem with splitting the signal after a passive preamp? What do I need to look out for? One pair would go to a full range amp, the second to a sub, possibly through an external xover/eq, so I need low level not high. Or, is there a passive with dual outputs?
Thanks Ryan

Hi Ryan. One of the major things to look out for is the total capacitance of the ICs, esp with passive/resistor types. Want to keep it as low as possible.

Hope this helps.

[Rich Carlson]

Ryan - My experience with this was not very successful, resulting in a definite lack of impact in the bass. I attribute this to the relatively low input impedance of my subs, and the need to run relatively long cables. But I think your success will depend on the specifics of your setup.
Rich

[audioengr]

Besides the capacitance problem mentioned, there can be transmission-line reflections that aggravate the response of the driver.  This effect depends on what the driver configuration is at the preamp output and whether there is gain-control feedback on this stage or not.  Usually, if there is a series resistor there, this effect is minimized.

[Paul L]

ryno,
Our F.T.Audio Little Wonder Passive Controller has two preouts since day one.

[ryno]

Sorry about this question, it's prretty vague. I'd love to do a ack dac and a bottlehead or similar tube pre, but it's for a bedroom system and a battery dac and tube pre are not the best choices. And I'd like to keep the option of a xover eq for the sub.

Hi Paul
I saw your web site for the little wonder, looks nice, maybe a little much in features and price for my little system. In this unit are the two preouts just a split from one, or is there something else inside that makes this work better.
Thanks for responding, Ryan

[Paul L]

ryno,

It is my buddy Fred's design X-coupler that different from the traditional passive.  

I have been running powersub with main amp for a long time.  One of our customer even run biamping as well as a powersub, so practically is triamping.  He biamps with a y-cable through one preout and the powersub from the second preout.