How much air?

[NancyJohnson]

I have a Darkglass Alpha/Omega 900 head and a Darkglass 112 (500w/8ohms).

The head has a 2/4 ohm switch (currently run it on the 4 ohm setting) and it has two Speakon speaker outputs.  For the sake of safety ('Just in case' syndrome), I'm thinking about adding a second 1x12 or (when Darkglass pull their finger out) a 1x15 (which hinted at seems to be in the same width enclosure).  I'm assuming the 1x15 will also be 8ohm.

So, the age old question.  Do I daisychain the cabinets (which will give a 4ohm load) or just plug each into their own output on the amp?  No idea whether the head sorts this all out interally.  What will be the loudest?

[Bill Fitzmaurice]

Assuming the amp jacks are parallel wired, which nearly all are, the two options are electrically identical.

[itu]

In the old days I would have suggested to use both outputs. Now your DG has Speakons and the disconnection does not seem possible like with those quarter inch plugs.

[Bill Fitzmaurice]

With 1/4" outputs it's better to use both, because being originally intended for telephone switchboards they don't have high current capacity, so with more than 200w amps it's prudent to split the current to two sets of connectors. That's not a concern with the far higher current capacity of Speakons.