Need advice on aftermarket system installation please!
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Joined: Jun 2022
Posts: 18
From: Missouri
Need advice on aftermarket system installation please!
What's up everyone!
My name is Matt, and I own a 2014 Nissan Maxima SV with bose and navigation system, and although I've done several aftermarket audio systems, including one on my previous vehicle (2016 Nissan Maxima S without bose), without hardly any problems, this vehicle seems to be demon possessed (lol!) and I cannot get it going!!
Here is my setup, then I give details on the issues I cannot solve....
Upgradec electrical system which includes a high output alternator (320A), upgraded all the cables(big 3 upgrade) with a couple additional chassis grounds to 2/0 gauge, under hood starting battery upgraded to a XS Power D3400, also have a secondary battery in trunk (XS Power XP 2000), power and ground for it are front to back from starting battery, also have voltmeter and ammeter for monitoring....
Equipment: Three amps, (two four channels, and a monoblock), first four channel is a JBL club 754, 75watts per channel for 300 RMS total driving two super tweeters, along with two rear door 6.5's in each rear door. Other four channel is a Down4sound JP234 wired to a 4ohm load for 235 watts RMS per channel for roughly 950-1000 watts RMS , that pushes four 8" mids, two in the front doors, two at the rear deck. Then my monoblock which is 2,000 watts RMS, pushing two Resilient Sounds Gold dual 4ohm subs in a ported box with 4ft airspace tuned at 33hz..... Also have a DD Audio DSI-3 6x12 DSP, and an Audiocontrol Matrix Plus that I feed the JP234 four channel and monoblock amp's RCA signals from my DSP to boost their voltage before going to the amps. The DSP has low voltage of less than 4v....
My issue is I have sound from all the speakers but nothing from my subs!! The monoblock has power, not in protect, all my connections are solid! I'm thinking it has something to do with the preamp inputs i tapped into behind the dash from the factory head unit.... Maybe the voltage from the factory head unit is too low even for the Matrix to boist??? Should I instead tap the audio outputs at the rear deck?? Or?? Any help would be GREATLY APPRECIATED!! Thanks in advance!
My name is Matt, and I own a 2014 Nissan Maxima SV with bose and navigation system, and although I've done several aftermarket audio systems, including one on my previous vehicle (2016 Nissan Maxima S without bose), without hardly any problems, this vehicle seems to be demon possessed (lol!) and I cannot get it going!!
Here is my setup, then I give details on the issues I cannot solve....
Upgradec electrical system which includes a high output alternator (320A), upgraded all the cables(big 3 upgrade) with a couple additional chassis grounds to 2/0 gauge, under hood starting battery upgraded to a XS Power D3400, also have a secondary battery in trunk (XS Power XP 2000), power and ground for it are front to back from starting battery, also have voltmeter and ammeter for monitoring....
Equipment: Three amps, (two four channels, and a monoblock), first four channel is a JBL club 754, 75watts per channel for 300 RMS total driving two super tweeters, along with two rear door 6.5's in each rear door. Other four channel is a Down4sound JP234 wired to a 4ohm load for 235 watts RMS per channel for roughly 950-1000 watts RMS , that pushes four 8" mids, two in the front doors, two at the rear deck. Then my monoblock which is 2,000 watts RMS, pushing two Resilient Sounds Gold dual 4ohm subs in a ported box with 4ft airspace tuned at 33hz..... Also have a DD Audio DSI-3 6x12 DSP, and an Audiocontrol Matrix Plus that I feed the JP234 four channel and monoblock amp's RCA signals from my DSP to boost their voltage before going to the amps. The DSP has low voltage of less than 4v....
My issue is I have sound from all the speakers but nothing from my subs!! The monoblock has power, not in protect, all my connections are solid! I'm thinking it has something to do with the preamp inputs i tapped into behind the dash from the factory head unit.... Maybe the voltage from the factory head unit is too low even for the Matrix to boist??? Should I instead tap the audio outputs at the rear deck?? Or?? Any help would be GREATLY APPRECIATED!! Thanks in advance!
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