Jump to content

How to determine what size alt?


Recommended Posts

You all are off. It takes 100 amps at 12 volts to make 1200 watts. Amps x volts = watts. And figure on 80% efficiency, so realistically 100 amps at 12 volts makes 960 watts.

for burps :shrug:

  • Like (+1 Rep) 1
On 5/8/2011 at 7:38 PM, Kranny said:
On 5/8/2011 at 7:35 PM, 'Maxim' said:

It hurts me inside when I read stuff like this and remember you're 15

LMFAO so true

:blush:

Mitsubishi 3000GT (Old Build)

Headunit: Pioneer 80PRS

Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids

Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies

Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s

Electrical :Singer 260A Alt & JY Power Lithium

 

2005 Chevy Colorado Ext Cab

Headunit: Pioneer 80PRS

Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms

Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s

Electrical: Singer "390" and JY Power

My Official Feedback Thread

Link to comment
Share on other sites

I prefer to err on the more than I need side.

My system is going to be around 1100 rms and im planing to have around 200(potential) amps at idle a d3400 underhood and a small batt in the back to support that.

Edited by Broke_Audio_Addict

That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.

Link to comment
Share on other sites

Here are the options Chris sent me..

240 amp G series unit

400 rpm turn on speed

140 amps @ 600 rpm

Full output by 1800 rpm

Pure copper rectifier

6 press fit large diodes

$349 plus shipping

250 amp Elite series

300 rpm turn on

200 amps @ 500 rpm

Full output @ 1000 rpm

Twin Rectifier plates

12 press fit high amp diodes

599 plus shipping

270 amp G series unit

400 rpm turn on speed

165 amps @ 500 rpm

Full output by 1800 rpm

Pure copper rectifier

6 press fit large diodes

$449 plus shipping

370 amp 6 phase Elite series

300 rpm turn on speed

200 amps @ 500 rpm

250 amps @ 800 rpm

370 amps @ 1800 rpm

Twin rectifier plates

12 press fit high amp diodes

$699 plus shipping

Link to comment
Share on other sites

Just get the 370 elite and you'll be golden for a few future upgrades when you decide you want more power ;)

Link to comment
Share on other sites

In a word - WALLET - get as much alt as you can afford.

CURRENT SYSTEM:

  • Alternator:
    1. Stock alt on mids/highs
    2. Isolated DC Power 270 SP - Charging @ 16.8v
  • Batteries: (2) XS D1400s
  • Power Cable: Double Runs of 1/0 KNU Kolossus Fleks
  • Headunit: 80-PRS
  • Sub Amp: DC 5.0k
  • Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones
  • Subwoofer Enclosure: 9.1cubes @ 32hz - brutal.
  • Mids & Highs Amp: CT125.4
  • Active Components:
    • Mids RE XXX 6.5c
    • Highs - 3 RE XXX tweeters per side(A pillar)
  • Noise Control: Damplifier Pro all over the cab.

Build Log

If you do business with me please leave feedback here: FEEDBACK THREAD

 
Highest Legal Score: 151.0 db
Highest Musical 30 Second Average: 151.6 db
Link to comment
Share on other sites

Bigger isn't always better when it comes to Alts.

I'd rather have a smaller alt that does more at idle than a bigger alt that does less at idle but more at 2k Rpms.

That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   2 Members, 0 Anonymous, 116 Guests (See full list)

×
×
  • Create New...