+ or - in centre of dc on t-amp - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th February 2006, 02:09 PM   #1
diyAudio Member
 
Join Date: Jan 2006
Location: Uppsala
Default + or - in centre of dc on t-amp

Hi
First posting, maybe dumb, but...
I just got my t-amp. It has a dc output but I dont know if + or- is in the centre of the contact. Also it says you can use a 14 volt transformer, though it says 12 volt in the back. Thankful for help.
  Reply With Quote
Old 15th February 2006, 02:26 PM   #2
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
I believe the power input is AC.

/sreten.
  Reply With Quote
Old 15th February 2006, 03:03 PM   #3
diyAudio Member
 
Join Date: Jan 2006
Location: Uppsala
Well I am kind of new, but it says dc 12 volts under the connection hole on the back. The the question is what is + and - so I dont ruine the thing.
  Reply With Quote
Old 15th February 2006, 04:08 PM   #4
D0Hbert is offline D0Hbert  Philippines
diyAudio Member
 
Join Date: Sep 2004
Location: Manila
Its 12vdc, center is positive.
  Reply With Quote
Old 15th February 2006, 04:42 PM   #5
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Click the image to open in full size.

This amp is DC, the cheaper one I think is AC, this one is clearly marked.

A 12V car battery is actually 13.8V, so it should accept 14V.

Note a 14V AC transformer when rectified does not produce 14V DC.

/sreten.
  Reply With Quote
Old 15th February 2006, 07:04 PM   #6
diyAudio Member
 
Join Date: Jan 2006
Location: Uppsala
Ok thanks. If your wrong I will hunt you down no matter what continent your on...
It says in the small manual that you can use 14 volt, but maybe safest not to try it. Thanks again. Time to connect.
  Reply With Quote
Old 15th February 2006, 09:02 PM   #7
diyAudio Member
 
Join Date: Dec 2005
Location: Berlin
That is wrong!
Also the (original) T-amp is DC 12V, the center is positive!
Greetings,
Nils
  Reply With Quote
Old 15th February 2006, 09:16 PM   #8
diyAudio Member
 
Lostcause's Avatar
 
Join Date: Aug 2005
Location: NW UK
Quote:
Originally posted by nilsomat
That is wrong!
Also the (original) T-amp is DC 12V, the center is positive!
Greetings,
Nils
As the man says.........

DC..DC...DC It is recomended for 13.2V maximum.

Do NOT put AC through it, it WILL fry!!!!
  Reply With Quote
Old 15th February 2006, 11:23 PM   #9
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Kona, Hawaii
Blog Entries: 4
Cousin Lostcause is quite correct. DC ONLY!

I had the little SMPS that comes with the Super-T tested. It does very well. Good regulation, low noise, holds 11.98V at its rated 3A. Handles short circuits like a champ.

Maybe I can talk the Sonic guys into selling that power supply for the original Sonic Impact, too.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 16th February 2006, 09:55 AM   #10
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Quote:
Originally posted by pgvpgv333
Ok thanks. If your wrong I will hunt you down no matter what continent your on...
It says in the small manual that you can use 14 volt, but maybe safest not to try it. Thanks again. Time to connect.
Hi,

I'm only going on bits and pieces I've read about running
T-amps off car batteries, and I'm only familiar with the two
amps that parts express sell.

I'll stick by the assertion : anything designed to run off a car
battery will accept 14V dc.( Or it would be in big trouble.)

/sreten.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heaters and centre tap duderduderini Tubes / Valves 10 17th November 2010 11:38 AM
Suggestion on the best MTM centre wilsonj Multi-Way 14 19th June 2007 03:35 AM
centre speaker garymtb Multi-Way 24 7th June 2007 12:30 PM
Phantom centre channel with centre channel lol Toast_Master Multi-Way 5 5th December 2006 04:54 AM
2.5 Way for a centre speaker? Puggie Multi-Way 0 1st March 2005 05:09 PM


New To Site? Need Help?

All times are GMT. The time now is 02:40 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2