manfredbass Posted February 22, 2005 Share Posted February 22, 2005 I want to change my goliath III 8 ohm to a 4 ohm without changing speakers. A diagram would be handy Link to comment Share on other sites More sharing options...
Gruuve Posted February 22, 2005 Share Posted February 22, 2005 Originally posted by manfredbass: I want to change my goliath III 8 ohm to a 4 ohm without changing speakers. A diagram would be handy The only way I know of to do this is to change the speakers, unfortunately. You could rewire it completely in parallel to a 1 ohm load, but I don't know of any amps that will drive that low of a load, plus you'd have to also replace the crossover with one that is custom-made to work with a 1-ohm load. I'd assume you want it to be 4-ohm to use more power from your amp, right? It might be cheaper and less problematic to just get a bigger amp... Old bass players never die, they just buy lighter rigs. - Tom Capasso, 11/9/2006 Link to comment Share on other sites More sharing options...
57pbass Posted February 22, 2005 Share Posted February 22, 2005 I once owned a Bag End 4 x 10 - 8 ohm cab and had the same request. Bag End told me they would have to replace all the drivers and the circuitry. I sold that and purchased a 4 ohm Goliath 4 x 10 and it working outvery well.. I would contact SWR directly about your request and find out if or how you should proceed.. I dont know what type of impact it will have on the warranty if you blow it up! Good luck www.danielprine.com Link to comment Share on other sites More sharing options...
musicfiend Posted February 22, 2005 Share Posted February 22, 2005 Search feeature shows that it's possible http://www.musicplayer.com/cgi-bin/ultimatebb.cgi?/ubb/get_topic/f/5/t/010923.html Edendude let's us know that he rewired his cab from 4 ohm to 16 ohms.... Hiram Bullock thinks I like the band volume too soft (but he plays guitar). Joe Sample thinks I like it way too loud (but he plays piano). -Marcus Miller Link to comment Share on other sites More sharing options...
Big Red 67 Posted February 22, 2005 Share Posted February 22, 2005 Wire it to one ohm. Then run it with a car audio amp. they go to one. hehehe Big Red's Ride Blog Link to comment Share on other sites More sharing options...
Edendude Posted February 22, 2005 Share Posted February 22, 2005 You can't go from 8 ohms to 4 ohms without changing out the drivers on either a 2x10 or a 4x10 cab. If you are going to keep a balanced power distribution among the individual drivers, no conbination of series/parallel wiring will work. Here's a VERY useful 'Impedance Calculator' resource to help you figure out what kind of cab impedance changes you 'can' make by re-configuring your cab's wiring. Just plug in the impedance values of various drivers and the calculator will show you the total impedance values for a multitude of series/parallel wiring configurations, using up to 16 individual drivers. Click here... http://www.colomar.com/Shavano/impedance_proc.php But a word to the wise... Changing the impedance of your cab by reconfiguring the wiring, also moves your crossover point. When I changed my Eden 2x10 over from 4 to 16 ohms, I took the horn and x-over out of the circuit, because the one horn in the other 2x10 cab is plenty enough. So the x-over issue was not an issue I needed to be concerned with. P.S... The really cool thing about that impedance calculator I have given you... It generates a detailed wiring diagram for every possible wiring combination you feed into it. Cool or what?! My Last Band Link to comment Share on other sites More sharing options...
manfredbass Posted February 22, 2005 Author Share Posted February 22, 2005 very useful information. I have never tried a forum before, but I can surely say I am talking with serious professionals. Thanks a lot. I will buy a 15" cabinet, and go break by back all for good tone!!! it surely pays!!! Link to comment Share on other sites More sharing options...
Edendude Posted February 22, 2005 Share Posted February 22, 2005 The real advantage of forums like these, is that you can benefit from the mistakes others have made in the past. Glad to have been of some help to you. My Last Band Link to comment Share on other sites More sharing options...
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