Members theDogger Posted March 1, 2009 Members Share Posted March 1, 2009 Thought that I would post my DIY build of a Marshall Slant 1960 4x12. Here is the PDF of the plans that I followed. I used Baltic Birch 13 ply voidless sheets. (I am also looking for some Marshall 1936 2x12 plans. Have enough wood to build a 2nd cab). I will up date the thread as I move along. I should mention that I am fortunate enough to have access to a master cabinet builder. My brother-in-law's father-in-law. The guy is just plain awesome. He has done most of the cutting and is assisting in the assembly. (Keeps telling me the assembly is monkeys work ) Here is my build sheet: Gear_Build Input 1 - 8 Ohm (2-Greenbacks) Input 2 - 8 Ohm (2-G12T) Input 3 - 16 Ohm (all 4 speakers) Good cab wiring info here http://www.jumbosunshade.com/ezine/swd4.htm the cab joints will be held together with biscuits. Here is are some shot of the first days build.. More to come... theDogger Link to comment Share on other sites More sharing options...
Members goosefartfan Posted March 1, 2009 Members Share Posted March 1, 2009 AWESOME!! Link to comment Share on other sites More sharing options...
Members guitar Dan Posted March 1, 2009 Members Share Posted March 1, 2009 nice job,nice workshop steve Link to comment Share on other sites More sharing options...
Members theDogger Posted March 6, 2009 Author Members Share Posted March 6, 2009 Question....Is it good practice to combine such different wattage speakers? He is my reason for asking. I will have the 4x12 loaded on top w/ 2-Greenbacks (25watts) and on the bottom 2-G12T(75watts). Now the max wattage is determined by the lowest wattage.....so will the higher watt G12T's be affect much because of the lowest amount of wattage can be used? Would I be better off loading the 4x12 w/ 4-G12T's and then load the 2x12 w/ the 2-Greenbacks? or loading the 4x12 w/2-V30's and 2-G12T's and then the 2x12 w/2-G12T's Hope that made sense.. I am not able to work on the CAB until next weekend. I'll post more pics then of the 2-cabs theDogger Link to comment Share on other sites More sharing options...
Members Casey4s Posted March 6, 2009 Members Share Posted March 6, 2009 OUTSTANDING craftsmanship Sir :thu: I am looking forward to the completed project. Link to comment Share on other sites More sharing options...
Members 73Monte Posted March 7, 2009 Members Share Posted March 7, 2009 Good job so far, ready for more pics! Link to comment Share on other sites More sharing options...
Members charveldan Posted March 7, 2009 Members Share Posted March 7, 2009 Most Marshall cabs are wire Series/parallel running at 16 ohms, your diagram shows only Parallel or Parallel/series, which is different from [series/parallel]. Obviously you can wire it how you want, just thought I'd point that out. Link to comment Share on other sites More sharing options...
Members theDogger Posted March 8, 2009 Author Members Share Posted March 8, 2009 . Obviously you can wire it how you want, just thought I'd point that out. Right but Marshall's only have 2 options this gives me 3 option. 1-8 Ohms (2-greenbacks) 1-8 Ohms (2-G12T75) 4-16 Ohms (All 4) theDogger Link to comment Share on other sites More sharing options...
Members theDogger Posted March 8, 2009 Author Members Share Posted March 8, 2009 Ok since I am not able to work on the cabs this week end I decided to burn the speakers in. I created a 50 mhz - 60 mhz sine wave that run for 30 min then I repeat it. I hooked up 4 of the G12T75 to the stereo and I am going to let it run for 8 hrs today and 4 hours tomorrow to really loosen up the spiders and break them in. I still have not bought my last 2 speakers. Looking at the following.... Eminence Red FangEminence WizardCelestion G12 GreenbacksWarehouse Green Beret theDogger Link to comment Share on other sites More sharing options...
Members charveldan Posted March 8, 2009 Members Share Posted March 8, 2009 Ok since I am not able to work on the cabs this week end I decided to burn the speakers in. I created a 50 mhz - 60 mhz sine wave that run for 30 min then I repeat it. I hooked up 4 of the G12T75 to the stereo and I am going to let it run for 8 hrs today and 4 hours tomorrow to really loosen up the spiders and break them in. I still have not bought my last 2 speakers. Looking at the following.... Eminence Red Fang Eminence Wizard Celestion G12 Greenbacks Warehouse Green Beret theDogger Doing a great job, I recommend the greenies, I have [3] 4-12 cabs, but my favorite is a 78' Marshall Chequerboard 4-12 w/G12M "Blackbacks" [same as greenbacks], with my 78' JMP MK II 2203 those 25 watt speakers really do the talking.:love::love: Link to comment Share on other sites More sharing options...
Members katillac Posted March 8, 2009 Members Share Posted March 8, 2009 Subscribed Link to comment Share on other sites More sharing options...
Members gusvolta Posted March 8, 2009 Members Share Posted March 8, 2009 Link to comment Share on other sites More sharing options...
Members jpacman Posted March 9, 2009 Members Share Posted March 9, 2009 wow, neat stuff Link to comment Share on other sites More sharing options...
Members extremelybored Posted March 9, 2009 Members Share Posted March 9, 2009 Ok since I am not able to work on the cabs this week end I decided to burn the speakers in. I created a 50 mhz - 60 mhz sine wave that run for 30 min then I repeat it. I hooked up 4 of the G12T75 to the stereo and I am going to let it run for 8 hrs today and 4 hours tomorrow to really loosen up the spiders and break them in.I still have not bought my last 2 speakers. Looking at the following....Eminence Red FangEminence WizardCelestion G12 GreenbacksWarehouse Green BerettheDogger Lol wut? Link to comment Share on other sites More sharing options...
Members theDogger Posted March 9, 2009 Author Members Share Posted March 9, 2009 Lol wut? New from the factory all speakers are harsh sounding due the Spider being stiff. By running a looping sine wave that vibrates the spider. It loosen up the spider basically breaking in the speaker quicker. So a progressing sine wave from 50-60 mhz looping for 8 hr periods 3 time really loosens up the spider and gets the speaker broken very quick. Basically the same thing that Avatar does with the HellaTone Speakers and charges you more. theDogger Link to comment Share on other sites More sharing options...
Members guitargurus Posted March 14, 2009 Members Share Posted March 14, 2009 good luck Link to comment Share on other sites More sharing options...
Members JPhoenix19 Posted March 15, 2009 Members Share Posted March 15, 2009 Subscribed I'm looking at building a 4x12 myself. I'm particularly interested in how you'll round the edges and what you'll cover it with. Link to comment Share on other sites More sharing options...
Members theDogger Posted March 29, 2009 Author Members Share Posted March 29, 2009 Ok finally got a chance to work on the 4x12. Got as far as I could without the tolex and grill cloth. That should be here mid-week. Tomorrow I am going to cut the pieces for the 2x12. It is coming along well. Here are some more shots. JPhoenix19 here is what I am using for tolex and grill cloth http://www.speakerbuildersupply.com/servlet/the-207/Mesa-Boogie-black-leather/Detail the Grill cloth http://www.speakerbuildersupply.com/servlet/the-227/Marshall-%22Salt-%26-Pepper%22/Detail I bought most all my accessories form speaker builders supply. Corner, tolex, grill cloth, fastners.... more to come stay tuned... theDogger Link to comment Share on other sites More sharing options...
Members shooto Posted March 29, 2009 Members Share Posted March 29, 2009 nice work Link to comment Share on other sites More sharing options...
Members theDogger Posted April 7, 2009 Author Members Share Posted April 7, 2009 Ok worked on the cabs this weekend again and today I just got the tolex, grill cloth and other misc. part here are some updated shots. stay tuned... theDogger Link to comment Share on other sites More sharing options...
Members katillac Posted April 7, 2009 Members Share Posted April 7, 2009 What did you use to do the speaker holes? They look incredibly clean. Link to comment Share on other sites More sharing options...
Members theDogger Posted April 7, 2009 Author Members Share Posted April 7, 2009 It is a Jasper Circle Jig I use to use it when I did car audio to make speaker rings and cut the circles out for the woofers..really easy to use. Mounts on to the router. http://www.partsexpress.com/Tech/365-250.html theDogger Link to comment Share on other sites More sharing options...
Members Furtive Posted April 7, 2009 Members Share Posted April 7, 2009 This thread should be required reading for anyone that believes they can throw together a good cabinet quick, cheap and easy. Very nice work! Link to comment Share on other sites More sharing options...
Members theDogger Posted April 11, 2009 Author Members Share Posted April 11, 2009 Got a chance to paint and cover the speaker baffle. Here is a shot of the finished product. The salt&Pepper was a little tough working with but got it straightened out. But the damn pics looks like it is not straight... Going to have to wait until next weekend for a finished product. With Easter this weekend no time to work on it. All that is left to do is the round over on the edges. Then I can Tolex the entire cab and stuff it with the speakers and look out neighbors! :devil: I will also post he pics og the Marshall 1936 that I am also building. theDogger Link to comment Share on other sites More sharing options...
Members liveloveshare Posted April 11, 2009 Members Share Posted April 11, 2009 wow--that looks awesome, dude. Link to comment Share on other sites More sharing options...
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