Jeep03 Posted April 8, 2014 Report Share Posted April 8, 2014 I just went from a Hifonics BRX 2400 to a SAZ 3500D V2 Sundown amp. Problem is, it sounds identical to the hifonics amp. I don't hear any difference from what I can tell. Its rather dissapointing since the hifonics was around $350 and the Sundown was almost $1,000. I'm running my subs at 2ohms because they are both Dual 4 ohms. Though the box I have isn't big or spacious for these subs at, I would have thought there would have been some difference in the quality at that. On another note, I'm getting a constant "humming noise" through my subs even with the volume all the way down. I think its my rca cables and not the amp because I switched between amps and it was doing it on the hifonics as well. Just seemed to crap out between the switch which is odd, since i was bumping an 1hr before the switch. Maybe there is some mixed wiring somewhere, I'm not sure tbh. Thanks Quote Link to comment Share on other sites More sharing options...
Dan2427 Posted April 8, 2014 Report Share Posted April 8, 2014 (edited) I'm amazed you don't hear a difference, how did you set the gains? What's your electrical like? Btw two D4's wire to one ohm or 4 so you can't be wired to two ohm unless that was a typo. Also did you "hot swap" RCA's as in having power/head unit on while switching amps? Edit: a nice custom and efficient box will make a world of difference, I'd highly recommend one even if you gotta pay someone to design and/or build it! Edited April 8, 2014 by Dan2427 Quote 2003 GMC Yukon Denali Alpine CDA 117 Redoing Mids/Highs 4 Runs of 1/0 Knukonceptz 2+, 2- 4 Deka 9A31's in back (Stock underhood) 250 amp Alt. AQ20K 2 18" Crossfire XS V.2's 12 cubes 33hz 149sq inches of port! Link to comment Share on other sites More sharing options...
Noel989 Posted April 8, 2014 Report Share Posted April 8, 2014 2 d4subs is either 4 or 1 ohm What's your electrical? Quote Build Log - http://www.stevemead...-cruiser-el-pt/ Link to comment Share on other sites More sharing options...
Miguels Posted April 8, 2014 Report Share Posted April 8, 2014 might be wired at 4 ohms.. no way in hell with a brz sound like a soundown.. not even compares to a bc2200 either youre at 4 ohms and your box is a prefab Quote my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
Jeep03 Posted April 8, 2014 Author Report Share Posted April 8, 2014 I had everything off and I even took out the fuse between the amp and batteries. After some research it looks like it might be my ground causing it. Its also a kenwood HU if that helps. I was told when I bought them that they can only be wired down to 2ohm and I thought thats what ive been running them at. I am using a prefab box, but already have a custom built box being built for me by DaveTheBoxGuy. Which will be here next month I am on stock alt when I plan on upgrading to a 350 very soon. Maybe I did wire my subs wrong. But how do I wire them in parallel to each other when there is a splice in the box that seperates them. Quote Link to comment Share on other sites More sharing options...
bassman619 Posted April 8, 2014 Report Share Posted April 8, 2014 They can only be wired to 2 ohms individually... so one speaker + to + to amp and - to - to amp..but with two 4ohm subs you can wire them in parallel to make 1 ohm.. wire from + to + on one sub then connect that to the next subs + and to its other positive then from there to the amp. Same with negative it would reach 1 ohm...and you need to set gains properly with an oscope or dd1 you should be getting louder..if not you have a problem with your power or ground..either connections arent tight enough, gnd isnt connected to bare metal surface and bolted down ..or bad battery or bad alternator..you should have an h/o alt for that many watts tho Quote You need trunk space to get groceries and shit...bitches love groceries Link to comment Share on other sites More sharing options...
bassman619 Posted April 8, 2014 Report Share Posted April 8, 2014 I see you say theres a wall in the box that separates them..ok..wired in parallel doesnt have tk be done exactly how diagrams show it..you can wire eeah sub +to+ to the boxes terminal and same for negative and either run wire out side the v Box from one terminals positive to the other terminals positive then one wire from there to the amp..and same for the negative..or you can run the positives and negative from both terminals to the same channel on the amp..both these ways would result in a 1 ohm load Quote You need trunk space to get groceries and shit...bitches love groceries Link to comment Share on other sites More sharing options...
bassman619 Posted April 8, 2014 Report Share Posted April 8, 2014 If you still dont get it watch this video Subwoofer Wiring: Two 4 ohm DVC Subs in Parallel: Quote You need trunk space to get groceries and shit...bitches love groceries Link to comment Share on other sites More sharing options...
Swordlordboy1234 Posted April 8, 2014 Report Share Posted April 8, 2014 its gotta be wired at 4ohms and its gotta be the wrong box for those x's... a sundown 3500 and those subs should be night and day to your last set up. Quote My old YouTube channel : http://www.youtube.com/user/SwordLords1234?feature=mhee My old build log : http://www.stevemeadedesigns.com/board/topic/161872-96-accord-b2-sundown-sky-high-dc-power-re-re-build-for-heatwave/page-37 My New Build - http://www.stevemeadedesigns.com/board/topic/207041-2016-mazda-6-sql-build/ 2016 Mazda 6 Touring JL Fix 86 - OEM signal correction B2 prototype DSP 6to8 B2 Ref63 - 3 way active set 2 B2 Class H quattro's 1 B2 Zero.5R @.5 2 B2 HNv3 12 d2 B2 SLIP40 - Lithium in the trunk Northstar Group 35 under the hood 100ft 2/0 welding cable 30ft 4ga welding cable 20ft 8ga welding cable All stinger OFC speaker wire Soundrive custom RCA's Tons of attention to detail.... Can it be perfect? Link to comment Share on other sites More sharing options...
bassman619 Posted April 8, 2014 Report Share Posted April 8, 2014 Alsp those 2 channels on that amp are really one channel..so if you hook kne sub to each channel itll be the same just different leads to the same conn3ction Quote You need trunk space to get groceries and shit...bitches love groceries Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.