FAQ: CAN I USE 2 DIFFERENT ALTERNATORS IN THE SAME SYSTEM?
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- เผยแพร่เมื่อ 22 ธ.ค. 2021
- Being that Alternators are the essential part of battery life in a vehicle, you will see many builds in the basshead community with more than one alternator installed in the engine. It is important to know the proper way to setup this method and what equipment you will need to complete the job. The ammount of alternators can determine the longetvity of your ability to do demos.
In this video, JP answers a Frequently Asked Question from the comment section concerning alternator installation as well as the importance of alternator brackets.
You can find our selection of Alternator Brackets as down4soundshop.com in the link below. Be sure to check out our awesome Alternators from Mechman Alternators as well!
D4S 2000-2013 GM Triple Alt Bracket (5.3 full size)
www.down4soundshop.com/2000-2...
D4S GM 2000- 2013 4.8 - 5.3 - 6.0 - 6.2 Dual Alternator Kit
www.down4soundshop.com/gm-200...
Mechman Alternators E Series 270 amp Billet GM truck
www.down4soundshop.com/copy-o...
Mechman Alternators 400 Amp High Output Alternator
www.down4soundshop.com/400-Am... - ยานยนต์และพาหนะ
These videos are so helpful & I love how they’re directed towards people who are new like new new to car audio
A video showing how to run AGM & Limitless would be appreciated.
AGREED!!
Don’t do it…..
Lotsa videos about running agm with lithium on TH-cam
@@TH-camsucks..,why not?
@@62dobie Became lithium TRUMPS AGM by far, it’s stupid to run both when you can get better results by just using with lithium!
Definitely appreciate you sharing this helpful information. Maryland showing ❤
Informative video JP.
Thank you keep coming with audio content.
Great Video!!!
My biggest question was, do I run them together or separate them? Thanks for letting me know that I can run them separately.
Good job 👍🏾, thank you for sharing. Have you any plans for additional alternators to Europeen van like VW T6 and Japanese van like Toyota diesel?
A video on charging lithium batteries in an RV would be great, maybe with the second alternator.
Do you have step by step videos on how I would go about setting it up with altenators designated to one for my truck and one just for my system?
I got a bracket coming for my wifes jeep liberty . Its being made right now. I am going to put 2 400 amp elites on it !!!
Well this info helps me out a lot awesome JP thank you. P.S That amp is HUGE AND IT LOOKS POWERFUL AT THAT :) The JP83 is beautiful lime green look why did you take down from your website?????
Probably sold out
They go fast
Thank you so much
4:00
5 alternators. 😲
I wonder who are the top bass heads in the U.S, and if each year there is a National Championship.
Can you run 2 different brands together or separate from each other as one doing the electrical and the aftermarket alternator for the sub?
Can you please do a video on how to wire two alternators separately to two different banks. One to the truck or vehicle electrical system another one to the bank for your audio system
Literally run each alternator to the battery it is being used ro charge. Easy peezy.
@@the-dullahan So your saying your wiring harness wires all wired together to the vehicles ignition and so forth only thing that’s different is the charge points go to separate banks, right? Thanks for your response
Let me just tell you what I have. I have a mechman internally regulated 370 amp direct replacement for my factory alternator that I want to run my factory system. And I’ve got a externally regulated mechman 370 amp alternator that I want to run by battery bank so I can turn the volts up higher. This is what I’m trying to wire up in my truck. Doesn’t matter how the external regular wires up? Does it need to wire up to the battery system that is going to charge or does it matter where it gets it’s 12v reference from?
enjoyed!
I wish my car had an alternator. Then it could be upgraded and I could use a bigger amp than the JP8!
Your the greatest big dawg
Question JP looking for an answer or suggestion on running tweeters. I have 10 4ohm tweets I'm looking to run my 6.5s are component sets so I have 4 crossovers can multiple tweeters be hooked up to the crossovers should I run 4 of them from the head unit or do I need another 4 channel amp. Also is it too risky to run tweets off of an amp even with gain way down. 6 of them are 40 watt RMS and 4 are 120 is it safe to drop them below the 4 ohm because I don't believe there is a way to run them all and keep the 4 ohm impedance. Thank you hope that all makes sense
Jonathan I like your video's and have been watching things I have questions about. This video is helpful because I would like to run a secondary alternator to power my system. My question is 2 parts. How many batteries would be needed for say a 400 amp mechman? (would a single high capacity battery be enough?) And secondly will the alternator damage the secondary battery if you aren't using the system? No current draw, or very litttle? Thank you
No Dual alternator bracket listed for the small block Chevy the common engine On the plant
can I keep my stock alternator and add a add a hight out put alternator for the 2nd ????
Could you run a 24v alternator in your 12 v 4wd to power a 24v RV battery system?
i have a 425 alt from brand x and i looked on your website and i dont see any alternator brackets mainly gm ive got a 1999 ford expedition 5.4 and id love to put another alt on it for more power im running 2skar vxf 15s atm but gonna upgrade to 8 12s on a 30k i checked yours first before brand x for an alternator but couldnt find one would be awesome to get a dual bracket
Hey I want to know what kind of alternate I need to run on my 05 Chevy Tahoe four-wheel-drive 5.3 Vortech
If I ran 2 alts separated one for the truck and one for the system would that solve my lights dimming when running full tilt at night?
Dual alternators could that be transfered or wired in to a fuse panel that would go to a separate plug out the back of the truck and be able to charge say your trailer battery in line with the solar based system?
I have a 2004 F-150. It’s running at 12 volts. I have a high amp alternator in the stock location. I installed a dual alternator setup on it. I have dual agm batteries under the hood. The second alternator is a Mechman 400 amp Elite Series alternator. When I first wired the setup up, I wired both alternators going to the batteries. It was ok at the beginning, but basically the next day the battery light in the dash was on and it caused my truck to rev higher. With my truck in gear and my foot on the brake, rpm’s would be right around 1,000. I really had to keep my foot on the brake pedal or the truck would just want to take off. I couldn’t keep it like that. The setup now, and has been for a while now, is the stock location high amp alternator runs the truck and 5 of the vocal speakers amplifiers and charge’s the two batteries under the hood. The second alternator, the Mechman, charges another agm battery and 2 superbank caps. Totally separate from the other alternator. This charging system runs my 6 subwoofer amplifiers and 2 more vocal speakers amplifiers. It runs perfectly fine this way. I have volt meters hooked up under the hood and on my dash. Maybe a problem or a reason why I can’t wire both alternators together is because of this. When my truck is running after a minute or two, the voltage on my truck side, which is dictated by the engine computer, is around 14.2 - 14.4,5. The voltage coming out of the Mechman is higher, 14.8 - 15 volts. The Mechman is a one wire GM alternator. I don’t know if the different voltages of the two alternators is messing with the computer on my truck or something else when they are wired together, but I can’t do this in my truck. Because the voltage is computer controlled, I don’t know. I emailed Mechman about this and one of their technicians told me to give them a call and explain it to them, but I called half a dozen times and couldn’t get anyone to answer the phone. I had it posted about what was happening with my setup and Steve Meade commented about that I had them wired up wrong. He said I’d be able to hook up 10 alternators up and not have a problem. I asked what I could be wiring up wrong and he never left a response. He’s busy and I’m sure not worried about me, lol. That’s cool, I understand. I follow him. I watch the videos. But if anybody has any suggestions on why I can’t run both alternators together on my truck, I’ll listen. I don’t know if I want change my setup. It’s working good and I don’t have any problems. In the beginning I didn’t want to have two different charging systems in my truck, but that’s what I have to have I guess, lol.
Ya you need to put a diode on your sense wire for the comp ran alternator it will trick the computer into thinking depending on diode size that the system is a volt under the charge rate the high amp alt is high enough the comp thinks battery is full cycling on and off the alternator it's a maybe I run my truck like thisa 01 f150 triton
How do you run a big 3 wire upgrade if your running 2 separate alternators and one is high output and your running your sound system of and it's just the alternator with no battery under the hood just batteries in back
An alternator and battery in parallel with another alternator and battery would have the same voltage, and the current would flow towards the area of least electric potential, which would be the low battery. There are vehicles that run multiply alternators in parallel.
So.. how do you keep the amperage under control to meet the lithium batteries expectations? Or do you? Does a high amperage configuration lower the life on the batteries?
If your running all alternators together on 1 bank amperage isn't what you need to worry about, its about the set charge voltage, if they are both set to around 14.4 or so then its just plug and play. For the rated amperage, well you simply combine both of them, (Example) like the ones in the video, 270 + 400 = 670amps total. Realistically you won't see that full amount counting in heat soak and factory electronics.. Rule of thumb, take off 30 to 40% of your total alternator power for that.
As far as is it bad for the battery's with high amperage? No, Its actually worse for the alternator not so much the battery if its having to output its maximum current constantly. So its best to have a battery bank large enough to buffer the power your running, lithium banks are great for that, but of course the main thing is always have enough alternator power regardless, because that's what matters the most, the bigger the battery bank the bigger the power your running results in the more alternator you will need.
Does this cause more draw on engine? Also more gas as well?
Do I need multiple alts or can I run just one high amp output one
I'd love to have 1 alt run the pickup and the other for the system but I have an 05 f150.
Twin outboards (or inboards) connected to two separated battery isolators ( one each engine), charging both:
- Its own starting battery, and
- the house battery.
When both charge the common house battery:
1. How to synchronize the two alternators?
2. How are boat electronics affected?
3. How are alternator REGULATORS and isolators affected themselves?
4. If an external battery charger ( or any other DC input) is connected to the isolator on the same contact point that the alternator…..What will happen ?
I have a Mercedes 190e any options for a 3k watt system? ...
Comments section is a riot. I don't know why more vehicles are not burned to the ground.
Can I install a dual bracket for alternator on a 92 gmc 1500 350 5.7
do you have any dual alternator bracket for 2004 toyota corolla
What do you need to do to your car computer in order for it to not get confused why you use so much power at idle?
How can get a dual bracket for my 2007 hummer h3
Do you have the bracket for an 2003 Chevy Astro…compressor removal
Do you have a alternator bracket for my 2017 Chevy express 3500 6.0 L. No navigation….
😊this work for 08 impala
What kind of belt will I need for two different alternators under the hood?
Not nearly enough information given. What belt you need depends entirely on how you're running everything.
I need one for my 2015 GMC
Which would be better to have dual alternators or dual batteries under the hood? What's the pros and cons of a normal truck battery vs the other type that is used? If you had available external space to link together six or nine normal truck batteries in the rear in addition to the one under the hood what would be the pros or cons of using that in comparison to the other type of batteries? Thanks JP for all your amazing videos 👍🏼 Have a Merry Christmas 🎄 and a Happy New Year ☃️
If your running a system that is running at 14.x volts then all u need is one alt if you are under 5k watts, I am running a single alt just for my audio so I have two but one for my stock side that runs 14.x and audio running at 16.6 volts, but I am on lithium and running like 20k off one alt, u need a combination of battery power and alt power, u can have all the batteries but not enough charging the depletion of the battery can't keep up with the replenish
More batteries means less current available from the alternator. More run time with the engine off though. Your best bet is to go lithium batteries. They put a lot less of a load on an alternator.
My setup is standard alternator that runs car....but I want 4 extra heavy duty car batteries that will be in the back of my van. All To power miscellaneous other devices...Overnight sleeping fan, laptop etc etc
I want my batteries that are in the back of the van, to be able to be charged up while I drive the car all day. But when I park the car AND TURN IT OFF the fully charged batteries will last all through the night, as they power my laptop and my fan then sleep comfortably as the fan works all night.
I'm wondering how many alternators extra would I need?
When does the holiday sale end for sundown?
Can you make me a dual alternator bracket for my 2009 Honda Odyssey
How do I wire the 2nd alternator to run my audio?
What should I put in the back as an extra battery for my 2000 watt amp? I’m going for an XS power battery just don’t know what size I should get they are pretty pricy, I have a 240 amp alternator as well.
Well that is a good question because of 2000 watt amp pulls 145-167 Amps leaving you only 70 amps to charge with.
Would u have a bracket for ba xr6 turbo car
Can you run a high output on stock for a little while? Like say you're piecing together your setup have the alt and your stock goes out but the rest of your setup ain't home yet. Would that cause major damage? Like just wait. It's good run it. Or only for a like a week just to work.
Yes its fine as long as you do a big 3 so you dont smoke the factory charge wire extra amperage isn't going to hurt anything
Yes it will be fine. The alternator is only going to produce the amount of amperage that is required for the vehicle. So even if you have a 400 amp but the vehicle only requires 60 amps total then alt it is only going to produce that 60 amps to cover it. It will only produce 400 amps when it needs to.
wouldnt they have to have the same pulley diameter
I need a dual alt bracket for a 91 f250 anyone have a link they can share please?
If I have 2 optima red top batterys one under the hood and one in the trunk 1 wire running from the positive of the front to the back and the back battery is grounded to the chassis and I also have the big 3 how well does the battery in the trunk charge compared to the one under the hood thanks JP
Depends on how much amperage you're generating, how much amperage you're using, and what type of isolator you're running between your batteries
How do the electric cars deal with alternators? For example, I'd love to drop 12-15K watts into an Ioniq5, but I have no clue how this would work, given the elec nature of the car. Thoughts? Do they make alternators for them? What about batteries?
I have a KIA Niro which mechanically is identical to your Ioniq. My Niro is a 2018 HEV(hybrid electric vehicle) and not the PHEV(plug in hybrid electric vehicle) model.
On hybrids, they don’t have alternators. They have DC to DC converters. This takes the high voltage battery pack(240-360 volts for our cars) and converts it down to 12v. On my car, it is rated for 130 amps.
Luckily, on the HEV model, the 12v battery is a lithium battery that’s around 30 amp/hr.
All of this means the factory electrical system can support around 1k watts. I’ve got a JP8 on a single Savard HiQ 12” subwoofer and unless the amp is clipping, the voltage stays above 13.4 volts all the time. One trick is to keep the headlights on. This keeps the voltage in the 13.8v range. But if you drive with your headlights off then the voltage can dip down to almost 12 volts before the DC to DC converter kicks in.
@@91CavGT5 amazing. I don’t own one yet but my question is how do you upgrade the system to killer wattage on it?
@@TheGodofSEO you really can’t unless you spend a LOT of money to upgrade the DC to DC converter. To my knowledge there’s no company doing this for the KIA or Hyundai’s. You might be able to find a company that does it for Toyota Prius that might be able to do it. But once again, it won’t be cheap.
Love your chann
Does anyone know the max charge voltage for 38120 headway lithium 3.2 volt cells? They're 4 in series,32 cells per pack with 12 packs?
Most of those have a maximum of 3.6 volts per cell. 3.6 X 4 = 14.4 volts.
My question is if anyone has ever extended the input armature shaft out the back of an alternator so that it can be attached to the second alternators input armature shaft so both alternators share a single shaft. Could one even apply this to several alternators "a sort of train"
Doubt a belt would hold all that
Give me your sight to get a multiple alternator bracket
I am designing a system to run off a 25 hp diesel on a sail boat. I want one small alternator for the starting battery and a very large alternator for the 'house' batteries. If I was running one of your alternators @ 2000 rpm, then removed the load completely, via a switch, would it damage the alternator?
Do yourself a favor. KISS.
I’ve been wondering if you can use a high output alternator in a, let’s say Honda but the alt is meant for a truck.
Yes, if you can fab up a bracket that keeps it properly inline and setup with the correct pulley. I run Chevy alternators in my Ford Explorer.
@@Widowmaker2828 ok nice👍🏼
Need power in to get power out yes sir🚗🔊🎶
Wont one work harder with two different amperages hooked to same bank?
yes, i have a triple dc power engineering setup and from my experience one is always putting out more than the other two but when they sense the voltage drop the'll pick it up and increase the output to keep the voltage stable. If you have 3 370 amp alts you dont need the full 1110 amps they can produce all the time when driving normal around town that 1110 amps will be made when current demand is increased.
I’m doing 2 12” SA v2’s in my 2019 Accord 2.0t. I’ve got the SFB 3000D. 0 gauge kit and a D4S LTO 3k-5kw 12 lithium battery to run in the back. Do you think I will be okay? Not sure if I should get a new under the hood batt and or A high output alternator. Just wanna make sure everything will be set. Got a install scheduled the 12th of January.
A high output alt is one of the best things you can do for your system
100% you will instantly notice it playing louder and sounding better. Get a ho alt you won't be sorry
@@mistertroysd got the lithium in the back, xs D3400 agm under the hood. Stock alt rn and rockin 14.5 volts. I do have a 250amp alt otw tho. Stock seems to be just fine, though the voltage regulator is killin me bringing it to 12.4 sometimes
@@Crow-xm3nm right on
Where's you alt coming from?
@@mistertroysd my 250amp high output alternator is from excessive amperage. Custom built for my Accord.
Keep the separate on Late model Chevy. Use mechman for separate system. This is Chevy law.
Can I have a 370 charging 15.2 and a 320 charging 15.5 together to the same cmax ?
2 different brands
Awesome does the kits come with the correct belt?
No, you will need to use string to measure the belt size you need.
Yes the kit from D4S comes with everything you need a gates belt is included
Ey like how much something like that cost
Your Tahoe is a 5.7 OBS. You don't offer a dual alt bracket for a 5.7 88-99.
Do you have a bracket for a 99 suburban with the alt on the passenger side
Basscop has a good video on how to make one yourself. I've had mine like that for 2 years without any problems.
Duals we’re probably a factory option so I think you should be able to find one
Hi I'm Carlos I would like to make a green a.p.u. if i git a Alternator from you what is the max r.p.m. that I need and how much amps would I need my a/c is 22000 b.t.u. my Refrigerator is 25 amps my Freezer is 25 amps it cold be more so if us and Electric motor to turn the alternator for power so i can Circle the power around and around this will be for my Big Rick and all so need a Automatic shut off so I Won't over Charge my batterys can you help thank you
Let answer this before you watch yes you can run two different alternators or two different sized alternators
2 400amp alternators on the same battery.
Do I get 800amp or is it 400amp?
You would get up to 800 amps, but your actual amperage generated depends on a lot of factors. Also, any time you are running multiple alternators to one single feed, they should be run through a voltage control unit, which takes the input from each alternator and sends the output to the battery or batteries. This keeps the alternators from "seeing" one another and causing issues with performance or causing damage to one or both alternators. This is why all vehicles (cars, boats, etc) which come from the factory with multiple alternators will always use voltage controllers.
⚡🤜🤛⚡
Can you use 2 different batteries with the same amount of amps?
You can use any batteries you like, regardless of amperage, as long as your voltage matches. You should, however, always isolate batteries from one another.
Bro I need some help with a amp issue.
My amps shut off for no reason I have tried everything. It is not like your setup but my baby is having trouble bumping ....
Ground issue
@@hopskustomaudio where at on the amp or in the wiring. ?
Several different reasons this could be happening. Clipping, bad ground, wired under ohm load.
@Goz could be at the amp or even at the battery. I would do a big 3 upgrade and then ground the amp to the frame instead of the body. 99% of the time if it's turning off it's either bad ground or not enough power to supply the load and voltage to the amp is dropping below the voltage it needs to operate.
A late model Chevy bracket is not there. There can be nothing more common these days. What’s the deal?
2020 Chevy Silverado 1500 Crew 6.2
Nobody has nothing? Who can I get to custom fab this?
You could if you are using quality products
Hey boo
With the way lithium is u don't think dual Alts r as necessary if u run lithium, it has really changed the game and how power can be produced and sustained
What’s your contact info? Van conversation
These brackets don't help those of us riding in a foreign whip like a Honda or Nissan and need a bigger alternator then a 90 amp. Really sucks this is only helpful for truck owners.
So grab some card board design a alternator bracket and market that stuff and if you have a problem with the belt just add a bigger pully or smaller to the belt tensioner on your Honda. Good luck to you everything has an answer in this world. Make friends at a local machine shop or take a welding class so you could build custom Amp racks. Or take a basics to DC electrical course and figure out how to generate enough amps from capacitors and batteries to build the baddest systems on the planet. Or learn fiberglass that way you can build custom walls and do body work on Lamborghinis for a living.
TH-cam page is great
Facebook page not so much
I never win nuttin
That didn't answer the question at all. All you stated is that you can run them together or you can separate. And everybody knows that the voltage is constant. But you said absolutely nothing about amperage. Your only comment was duh this one's bigger this one smaller you'll get more from the bigger. I'm pretty sure the question was if the amps from both add together!
Yes they both add up to over 600amps of charging power
where does the turn on wire go to for the secondary alternator go to the amp turn on?
The alternator turn on wire goes to the harness for the alternator. Which harness you need depends on what alternator you have. As such, this wire should run from your car electrical system to your alternator, using whatever style harness your alternator requires. You could patch the wire into the car electrical however you choose, but the ideal and simplest location would be to do so out of your factory alternator harness.
@@the-dullahan the alternator is running independent from the veh from alt to battery no harness
@@flip_flop_farmer there is no such thing as an alternator which doesn't use a turn on wire. Check your alternator again, there is someplace for the harness to connect.