vroom Posted June 20, 2018 Author Report Share Posted June 20, 2018 Cheers man youve been a big help. Whats your thoughts on those XS super capacitors? Alot of weight savings Link to comment Share on other sites More sharing options...
alex912005 Posted June 20, 2018 Report Share Posted June 20, 2018 I have the same amp and instead of the S4b I have an SS2a and a B2 MA1000.4. Check out my build log in my signature. My Build Log Link to comment Share on other sites More sharing options...
Kraken Posted June 20, 2018 Report Share Posted June 20, 2018 I say get a couple of fat batteries. You're going to need that power Alpine cde143bt/ Alpine ktp445u (4x45 amp) 2 Crescendo STS 1 (on alpine 4x45 on 2 channel mode) 4 Crescendo pwx 6.5's in front doors (Skar RP150.4) 1 Sundown zv3 12, SAE1500D. Box is 2.5 cubes tuned to 30hz. Link to comment Share on other sites More sharing options...
vroom Posted May 14, 2019 Author Report Share Posted May 14, 2019 hi guys, yes its been a long time and my project went nowhere until now. finally getting back on it. so im going to be running a second battery out the back as advised. 2 0 gauge cables fused coming out of the front amp then fused going into the rear amp then 2 0 gauge going inside the cab to a fused disto block then into the DD amps...... does that sound right? also what size fuses will i need for the 2 0 gauge cables? running M4b and S4b Link to comment Share on other sites More sharing options...
Joshdashef Posted May 14, 2019 Report Share Posted May 14, 2019 5 hours ago, vroom said: hi guys, yes its been a long time and my project went nowhere until now. finally getting back on it. so im going to be running a second battery out the back as advised. 2 0 gauge cables fused coming out of the front amp then fused going into the rear amp then 2 0 gauge going inside the cab to a fused disto block then into the DD amps...... does that sound right? also what size fuses will i need for the 2 0 gauge cables? running M4b and S4b Can you clarify what you mean when you say "2 0 gauge cables fused coming out of the front amp then fused going into the rear amp" A diagram will help you a lot when it comes to remembering what to do when you get around to wiring everything. I fuse my 0 gauge ofc at 300 amps unless I am using a fuse for an amp with no internal fuse. Then I fuse according to the max draw of that amp. Some do it differently but this is what I do. My DC 2k calls for a 200 amp fuse if I am remembering right and my P600x4 calls for a 100 amp fuse but I used 4 gauge for that amp not 0 gauge. That s4b has fuses internally so I am pretty sure you are alright without fusing it from the rear battery to the amp unless you want to protect the wire from any shorts - up to you. The M4b (no internal fuses) has a max current draw of 500 A. So you could fuse each 0 gauge input at either 250 or 300. If your runs are short from your rear battery you don't have much to worry about, just don't fuse above the wires rating (0 gauge ofc - 300 amp fuse) and you will be fine. Some split there amps fuse rating in half for dual inputs others don't. I would do whatever fuse you have on hand 250 or 300 and you should be good. SMD Tool Map (2022): https://www.stevemeadedesigns.com/board/topic/220267-smd-tool-map-2022/ My Port Size Calculator (in progress): https://www.stevemeadedesigns.com/board/topic/217087-port-size-calculator-in-progress/ Common Port Walls for a Slot Port: https://www.stevemeadedesigns.com/board/topic/217076-common-port-walls-why-it-matters-to-your-box/?tab=comments#comment-3240313 Link to comment Share on other sites More sharing options...
vroom Posted May 14, 2019 Author Report Share Posted May 14, 2019 cheers for that, ill run 250 amp fuses just to be safe. how would you recommend i ground the amps? a common disto block or both amps straight to the body by shortest length? also a another dumb question.... i would not need to join the the 2 battery negatives together would i? Link to comment Share on other sites More sharing options...
vroom Posted May 15, 2019 Author Report Share Posted May 15, 2019 also what size battery would you recommend for the rear Link to comment Share on other sites More sharing options...
vroom Posted May 20, 2019 Author Report Share Posted May 20, 2019 can any of you recommend a good battery size for the M4b? im not sure how to work out the specs on batteries Link to comment Share on other sites More sharing options...
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