The Dark Lord Posted March 11, 2014 Share Posted March 11, 2014 (edited) I have a MiBass 550. It's great. But there's something I don't know about it - and the manual doesn't say. It has two separate jack/speakon outputs on the back. Lookie here: [attachment=157328:back.jpg] Does that mean it has two separate 275 watts each of which must be run no lower than 8 Ohms (like the Ashdown Superfly used to). Or is it a single 550 watt amp which, when you attach separate 8 Ohm cabs via those two separate outputs .... it becomes 4 Ohm somehow? Or could I indeed use one of the outputs and daisy chain two 8 Ohm cabs to it - and would that give 4 Ohms? Or could I use 1 x 4 Ohm Cab? I really haven't a clue but would like to have more of one. Edited March 11, 2014 by The Dark Lord Quote Link to comment Share on other sites More sharing options...
badboy1984 Posted March 11, 2014 Share Posted March 11, 2014 First those jack/XLR is speakon with jack i take it. I always have the impression that the amp runs 550watt in 4ohms. The 2 speaker connection means each one connects to a cab that that is 8ohm or lower like 16ohm etc. I would imagine you can just plug a 4ohm cab into one of the connection and it still works fine. Quote Link to comment Share on other sites More sharing options...
The Dark Lord Posted March 11, 2014 Author Share Posted March 11, 2014 [quote name='badboy1984' timestamp='1394552332' post='2392585'] First those jack/XLR is speakon with jack i take it. [/quote] Yep. Sorry. Corrected. Quote Link to comment Share on other sites More sharing options...
StraightSix Posted March 11, 2014 Share Posted March 11, 2014 As far as I can see, you can either run one or two 8ohm cabs (the amp sees 4ohms with two cabs) or a single 4ohm cab. Quote Link to comment Share on other sites More sharing options...
flyfisher Posted March 11, 2014 Share Posted March 11, 2014 It's not a stereo amp so it won't have two channels of 275W each, just one channel of 550W into a 4 ohm load. The two speaker sockets are just a convenience for connecting two 8 ohm cabs to give a 4 ohm load and extract the maximum 550W power. Use a single 4 ohm cab for the same power or a single 8 ohm cab for something around 2/3rds power (366W) - but don't quote me on that figure because it can vary quite a bit. Quote Link to comment Share on other sites More sharing options...
The Dark Lord Posted March 11, 2014 Author Share Posted March 11, 2014 [quote name='flyfisher' timestamp='1394553186' post='2392596'] It's not a stereo amp so it won't have two channels of 275W each, just one channel of 550W into a 4 ohm load. [/quote] The Superfly wasn't a stereo amp either - but did have two separate 25 watt power amps - also with two such outputs. That's why I'm slightly curious as to have this one works. Quote Link to comment Share on other sites More sharing options...
xgsjx Posted March 11, 2014 Share Posted March 11, 2014 The back panel does make for confusing reading & there's not much on the web. I'd get an amp that I could rely on. Quote Link to comment Share on other sites More sharing options...
flyfisher Posted March 11, 2014 Share Posted March 11, 2014 [quote name='The Dark Lord' timestamp='1394555093' post='2392632'] The Superfly wasn't a stereo amp either - but did have two separate 25 watt power amps - also with two such outputs. That's why I'm slightly curious as to have this one works. [/quote] Hmm. Fair enough. Strange arrangement to force someone to have two cabs for max output. If they are going in for such things then it's a shame the manuals are not clearer. Quote Link to comment Share on other sites More sharing options...
tauzero Posted March 11, 2014 Share Posted March 11, 2014 If you compare the specs of the MiBass 550 and the Superfly, the MiBass says it's 550W output while the Superfly says it's 2 x 250W. I think it's reasonable to deduce that the MiBass has a single power module. Quote Link to comment Share on other sites More sharing options...
gjones Posted March 12, 2014 Share Posted March 12, 2014 I use a single 4 ohm speaker cab with mine for the full 550 watts. Or if I wanted I could use both speakons, to connect two 8 ohm cabs in parallel, which would also bring the impedance down to 4 ohms and allow me to utilise the full 550 watts. Quote Link to comment Share on other sites More sharing options...
xgsjx Posted March 12, 2014 Share Posted March 12, 2014 [quote name='gjones' timestamp='1394586812' post='2393129'] I use a single 4 ohm speaker cab with mine for the full 550 watts. Or if I wanted I could use both speakons, to connect two 8 ohm cabs in parallel, which would also bring the impedance down to 4 ohms and allow me to utilise the full 550 watts. [/quote] That really depends on what cab you're using & if it knows what to do with that "full 550" watts. Quote Link to comment Share on other sites More sharing options...
yorks5stringer Posted March 12, 2014 Share Posted March 12, 2014 Why not just give Ashdown a ring or email them? Quote Link to comment Share on other sites More sharing options...
Merton Posted March 12, 2014 Share Posted March 12, 2014 [quote name='xgsjx' timestamp='1394610300' post='2393179'] That really depends on what cab you're using & if it knows what to do with that "full 550" watts. [/quote] Quote Link to comment Share on other sites More sharing options...
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