Ou7shined Posted November 4, 2007 Share Posted November 4, 2007 I've just bought [url="http://basschat.co.uk/index.php?showtopic=7490"]this bad boy[/url] - old style mark 1. I've been told that I can maximise the amps wattage by adding a 1x15. There is a "sub out" and the official blurb from Ashdown states that this is to be used with an "ASHDOWN 400 Watt powered sub unit". Sadly these units seem to have fallen from the face of the Earth since then but that's a whole other kettle of fish. I do have a never used (won it in a battle of the bands) powered 15" 180w 8ohm Peavey wedge (Eurosys 15pm) in storage but I guess this wouldn't do much for my sound at all. Here's the rear of my rig. Can I add a cab to the other output and if so what wattage should I run? We've got a dodgy last minute replacement gig in a few days and the PA will be for vocal only. Our drummer is a hard hitter and our lead guitar falls on the very loud side too, rhythm guitar has just got a new Orange so he'll likely be pulling out the stops to see what it can do so it would be nice to have something in reserve for myself if things get too much. Quote Link to comment Share on other sites More sharing options...
neilb Posted November 4, 2007 Share Posted November 4, 2007 you can add a cab to each output, ie one in the jack, one in the speakon. make sure the combined impedance is no lower than the 4 ohm specified. Quote Link to comment Share on other sites More sharing options...
Ou7shined Posted November 4, 2007 Author Share Posted November 4, 2007 That's great news. I was told that the 4x10's in the combo are already 4ohm (but there is nothing written on the amp to back that up) so what ohmage of cab is it safe to add? Quote Link to comment Share on other sites More sharing options...
steve-soar Posted November 4, 2007 Share Posted November 4, 2007 8 ohms. Your internal speakers in the combo are 8 ohms, so to get your full power out of the amp you need 4 ohms, that means you need a 8 ohm cab to add to your 8 ohm combo load. 8+8 divided by 4 = 4ohms. Quote Link to comment Share on other sites More sharing options...
Ou7shined Posted November 5, 2007 Author Share Posted November 5, 2007 (edited) Thanks Steve. I took a peek inside via one of the handles. They are indeed 8ohm drivers - by Sica. I've made up a simple diagram of the wiring too using the same colour coding. I'll post it too for the possible aid of others. Ok last question any ideas on what this 1x15 cab should be to be a good match? I had had my eye on [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=140173276631&ssPageName=STRK:MEWA:IT&ih=004"]this[/url] but I guess it won't do now.. and it was just down the road from me too. Edited November 5, 2007 by Ou7shined Quote Link to comment Share on other sites More sharing options...
bass_ferret Posted November 5, 2007 Share Posted November 5, 2007 Same cab in 8 ohms would be ideal. Its not always a good idea to mix and match cabs from different makes so stick with Ashdown. Quote Link to comment Share on other sites More sharing options...
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