Jump to content
View in the app

A better way to browse. Learn more.

SSA® Car Audio Forum

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Featured Replies

Posted

Bigg Boy at ***** Audio benched with an o-scope on a current XT4000D:

38.2v at 1 ohm with my voltage being around 15v-14.8v

^^^ there you have it and thanks a lot!

  • 4 weeks later...

soooooo you're saying they power ratings are overrated for the everyday user?

that doesnt tell us anything...

38.2v @ 1ohm...

Is that 1 ohm nominal... pretty hard to get @1ohm exactly.

What is resistance during the test?

What is amperage output?

How much clipping involved if any?

What is DCR?

that doesnt tell us anything...

38.2v @ 1ohm...

Is that 1 ohm nominal... pretty hard to get @1ohm exactly.

What is resistance during the test?

What is amperage output?

How much clipping involved if any?

What is DCR?

I thought maybe i was experiencing a brain fart when i couldn't figure the wattage with the info given lol

  • 1 month later...
  • 2 months later...
Volts mean nothing without amps?

This is pretty basic stuff.

I = V/R so Current = 38.2/1 = 38.2 Amps

P = VI So power = 38.2x38.2 = 1459 Watts.

Inductance is the thing that will interfere with your calculations. You will most likely see well over 1 ohm actual impedance so those basic formulas do not apply :(

If the guy who benched it had a non-inductive load, TRD's math is spot on :D

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...

Recently Browsing 0

  • No registered users viewing this page.

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.