the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

DMM reads 0.00 on output of amp but it's poundin


Post ReplyPost New Topic
< Prev Topic Next Topic >
rnthomas2 
Member - Posts: 3
Member spacespace
Joined: April 04, 2016
Location: California, United States
Posted: April 04, 2016 at 5:54 PM / IP Logged Link to Post Post Reply Quote rnthomas2
So I'm stumped on my TMA T1000.1 car amp i bought on offer up last month. When i hook speakers up to it (2) MEMPHIS 15-M510D4 @ 1 OHM LOAD it's driving my woofers Hella hard but i assume that there is some sort of distortion going on so i want to at least tune my amp gain to my deck using a digital multi meter so i in theory don't blow my subs or amp.
Ac voltage i believe should be read by setting my dmm to 200 on the AC Voltage setting Then positive to positive and negative to negative.... Correct??
Readings on my 12v+ read 12.60v ; turn on at 11.50v. The ohm load from the amps ground (-) to the batterys (-) terminal on the amp read 0.03 ohms resistance.
As of now i need to reground my stereo since its resistance on the ground read 0.09 ohms
I hope someone can read this and go hey dummy this is what your doing wrong. Thanks.
Laketittee caca is muy muy kabloooom
rs specialist 
Copper - Posts: 175
Copper spacespace
Joined: September 30, 2015
Location: Arizona, United States
Posted: April 06, 2016 at 10:43 AM / IP Logged Link to Post Post Reply Quote rs specialist
To tune your amp you would need an Oscope. This will allow you to see what the signal going into the amp looks like as well as what the signal leaving your amp looks like.
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: April 06, 2016 at 12:27 PM / IP Logged Link to Post Post Reply Quote DYohn
Amplifier output is AC volts, not DC.
Support the12volt.com
spandrel 
Member - Posts: 4
Member spacespace
Joined: April 05, 2016
Location: United Kingdom
Posted: April 07, 2016 at 6:38 PM / IP Logged Link to Post Post Reply Quote spandrel
I think rnthomas2 said he was using AC setting. It doesn't matter which way round the probes are though. The red and black +/- on amp outputs refers to phase, not polarity.
rnthomas2 
Member - Posts: 3
Member spacespace
Joined: April 04, 2016
Location: California, United States
Posted: April 10, 2016 at 8:32 AM / IP Logged Link to Post Post Reply Quote rnthomas2
I added a relay to my amp, kicker 30 band eq, and mtx 3 way crossover and now its showing a voltage on AC. Turns out the remote wire on my deck wasnt fully turning on my amp i guess....
New problem. My subs sometimes after slappin hella hard start to screech. After my system is turned off and back on from the deck the noise is gone.
Checked inside subs and no signs of faulty wiring and outside of box is the same. Not sure why....maybe capacitors on am p are going out?
Also no clipping signal being shown on my kickers 30 band eq for the power output. Did the set up bythe books for initial set up of my equalizer
Laketittee caca is muy muy kabloooom
rnthomas2 
Member - Posts: 3
Member spacespace
Joined: April 04, 2016
Location: California, United States
Posted: April 10, 2016 at 8:33 AM / IP Logged Link to Post Post Reply Quote rnthomas2
Could it be my relay? I got it out of a stereo shop trash can. Tested it and seems fine though
Laketittee caca is muy muy kabloooom

If you wish to post a reply to this topic, you must first login.
If you are not already registered, you must first register.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Thursday, March 28, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer