1. some dude

    How to tell if car has voltage reduction alternator

    I'm looking at buying a 2021 Camry SE with a 4 cylinder. I read about these newer cars with weasel alternators. How do you find out if it's a feature or not?
  2. Mr FaceCaser


    So finally tested my amps volts and it's staying at 13.87 volts so that means no alternator. The other thing all I'm seeing when I measure my amps output witch rn is putting out 1200 watts (i have the sundown SIA 3500D) bc of box rise so there's not much I can do with that. I'm changing the box...
  3. Mr FaceCaser

    Amp/voltage help

    How do the hell do I see if my voltage is dropping below 12 volts or not? When I use a multimeter on DC on the amp it shows negative when the leads are postive to postive and negative to negative but when I reverse postive and negative to negative and postive it's not negative. And it's also...
  4. F

    Headway lithium charging

    Hey, I have I dumb question but if I get a high output alt that charges at 14.8v and headway is rated for 14.6, would there be enough voltage drop in the wire running to the trunk or just accessories to not need an external regulator. If I need an external regulator, what is the best charging...
  5. G

    Amplifier upgrade, big 3 and eld questions

    For a 2012 civic Si: Currently have a JL JD500/1 running (2) 10w3v3-4 subs with no problems. upgrading amplifier to a JL RD1000/1, my car has an ELD sensor for voltage regulation based on the car’s current needs (fans, headlights, etc.) so I do not get a constant 14, if I am driving without...
  6. H

    Front stage gain voltage wont go past 10v, sub amp gains set fine.

    I am having an issue, I was able to set my subwoofer amp gains to the calculated 50v fine (nvx xad13) (sounds and works great), I go to set the gain on my sundown sdx 200.2 and gain maxed at the same volume I set my sub amp (same volume on the same headunit I had my last setup running on fine)...
  7. J

    Some weird s***....

    Mixture of chevy issue and audio issue. As of yesterday in my 2011 chevy cruse LT1, about 5 hours after installing/adding a 2 AWG strapped motor to frame (negative battery post) ground cable. I went and took a ride at about 9pm. This has never happened before even with original choked grounds. I...
  8. W

    HELP! Overcharging alt

    I am having an issue with my internal regulated 370amp high output alt. I am running dual alts with my stock alt running the truck (04 Yukon Denali) , and the high output alt running my audio. I have a relay to power on my high output alt, my relay consists of power fused from cmaxx Battery...
  9. P

    Electrical upgrade

    I’m currently running 2 sa-12v1’s on a taramps md3000 and a 1/0 big 3. When I turn them up, the voltage drops to 11.5. The voltage normally sits at about 14.3 at startup and 13.8 later on. What’s some cheaper options to get that voltage up?
  10. O

    Use multimeter to determine polarity on speakers while playing?

    Can you use a multimeter to determine polarity on wire that is unlabeled (potentially while music on)? Wires were connected to factory rears to run to amp high level in. Those bare wires will power a test 5x7, just unsure of polarity when wiring my high level adapter.
  11. P

    Big3 upgrade problems

    So I bought the sky high audio 1/0 big 3 kit and installed it today. I ran one from positive alternator post to positive battery post. One from negative battery post to ground. And one from the engine block to a body ground. All 1/0. Got in and played a little music and my voltage still dropped...
  12. B

    Noob Questions That I Need answered

    Ok i know a bit about audio but just having some trouble wrapping my head around some questions i have. Dont bag just please answer if you can. Thanks 1. My car has a 12v battery, and stock alt (dont know how many amps), and when running and car revved at 2500-3000rpm, the voltage is at 12.4v...
  13. Aygodriver1212

    Bit One & Head unit RCA output voltage question!

    Hello Friends, Been a while since I posted here. I've been busy but I decided to pick up my old hobby again. I was hooked up with some excellent stuff. Got myself an Audison Bit One DSP for just $100, and some other stuff. Rockford T1500bcp for just $200. Now, I've got some kind of Android...
  14. adulbrich

    Battery discussion

    Batteries are for reserve power, yes, but another member who's no longer active and I have had similar experiences with batteries. Here's what I've found: When adding batteries, max charging voltage decreases. For example, with one battery in the bank I charged at 15.2v cold and 15.0v hot. With...
  15. Jkidd288

    The Truth on Voltage and Proper Electrical explained

    A very important topic in the world of car audio is the inevitable issue of voltage drop and having the proper electrical equipment installed. Im going to explain to you the most basic principles to any electrical system and why having an adequate electrical system matters. First, lets define...
  16. rlambert02

    Voltage Problems, Please Help!!!

    Ok so here's what i already have: Mechman 220 HO alt Big 3 wiring optima yellow top (front) XSd3100 (rear) AT OFC 0g throughout Full copper terminals soldered Problem: At idle my car sits at 13.8 (dont most cars idle at 14.4?) but when I put my saz-3500 in a week ago it cut out after 3...
  17. emilimo701

    Amplifier output power vs. electrical system input voltage

    I'd like a little clarification on amplifier wattage ratings. I see things like "10000 watts RMS @ 13.8v, 15000 watts RMS @ 14.4v" and wonder... don't the amps have voltage regulators? Are these ratings meant to imply that the output signal gets louder as voltage increases? Since the system...
  18. TheGDog

    4ch. Highs + Mids "Dimming" after 30-40 sec of high volume playback

    During high-volume playback (meaning with volume at like 37, 38 or 39 out of 50) when I focused on a particular song for troubleshooting this issue (so I'd have a constant thing I could use to measure whether a new step I tried had a positive effect) the outpu of the highs+mids (aka the 4ch amp)...
  19. Ali1

    SOLD FS: Kinetik 2400

    I have a Kinetic HC2400 lightly used for 3 months. Heavy battey and served my amp well. Have no use for it anymore. Local pickup $210 ChicagoLand