stefBclef Posted August 25, 2012 Share Posted August 25, 2012 Hello I would like to check to see if I can use a certain combination of cabs/amps. I have read the info on here about impedence etc, and as such I am pretty sure I can't, but I want to be 100% sure before I decline a purchase! I have an Ashdown Mag 300 210 combo ([url="http://www.ashdownmusic.com/bass/detail.asp?ID=78"]http://www.ashdownmusic.com/bass/detail.asp?ID=78[/url]) which has 2 jack outputs. It can handle a minimum of 4 ohms. At the moment, into one output is plugged the built in 210 which is 8 ohms. If I plug something into the other jack which is 4 ohms, does the new overall impedence become: 4 x 8 / 4 + 8 = 2.66. Like I said, im pretty sure that this is correct, just need confirmation! Also, this type of wiring is in parallel right? Thanks Stef Quote Link to comment Share on other sites More sharing options...
geoffbyrne Posted August 25, 2012 Share Posted August 25, 2012 I think you are right there, so you need to plug in a cab rated at 8 Ohms - that'll give you the 4 Ohms total load. G. Quote Link to comment Share on other sites More sharing options...
Tankdave Posted August 25, 2012 Share Posted August 25, 2012 Your quite right to query this, as your reservations are right, you need an 8ohm extension cab to pair with the 8ohm combo Quote Link to comment Share on other sites More sharing options...
Tdw Posted August 25, 2012 Share Posted August 25, 2012 You're right about the impedance and yes it would be parallel wiring. You need an 8 ohm cab to use with your combo not a 4 ohm cab. Quote Link to comment Share on other sites More sharing options...
stefBclef Posted August 25, 2012 Author Share Posted August 25, 2012 Ok thanks everybody! Quote Link to comment Share on other sites More sharing options...
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