Go Back   Home > Forums > General Interest > Car Audio

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 16th December 2003, 10:33 PM   #11
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
yeah.. I would imagine they could do 25 watts rms at a reasonable thd...

but they would NEVER do 50 watts, right?? not even with the amplifier clipping to its fullest, cos the voltage rail just isn't there... right??

but it could do near to like 35 watts with like 50% THD.. lol
  Reply With Quote
Old 16th December 2003, 11:42 PM   #12
cm961 is offline cm961  Canada
diyAudio Member
 
cm961's Avatar
 
Join Date: Jun 2001
Location: Peterborough, Ontario
I'm just going to take my brothers advice and get a head unit which does not contain power amplifiers. That gives them more room to put in a better preamp etc. Makes perfect sense, however they're usually pretty costly. Too bad we can DIY mp3 CD players with really nice preamps (tubes even? Not that I use tubes).

Anyway, my head unit amplifier claims 160W max power into 4 channels. For one, I'm sure there's only two amplifiers in it, and I'm also sure it can't even hit 160W for even the smallest fraction of a second.

My next head unit will be ampless, and all my amps are likely to be gainclones.

Pete
  Reply With Quote
Old 17th December 2003, 12:03 AM   #13
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
so... we all agree that I can safely go into Tonkins and TELL them that these headunits won't do anywhere near 50watts rms even for a fraction of a second with 100% THD? lol
  Reply With Quote
Old 17th December 2003, 06:51 AM   #14
Vigier is offline Vigier  Netherlands
diyAudio Member
 
Join Date: Nov 2002
Location: Netherlands
Yes, you can...

by the way, there is no reason to buy a headunit that hasn't got poweramplifiers in it. You can just buy a Alpine 7894RB of 9815 and don't connect the power-line for the poweramplifiers (there are separate connections for that!). The quality of the pre-amplifier is good enough.

Grtz, Joris
  Reply With Quote
Old 17th December 2003, 10:47 AM   #15
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
ok.. lol
  Reply With Quote
Old 19th December 2003, 12:57 PM   #16
Volenti is offline Volenti  Australia
diyAudio Member
 
Join Date: Aug 2003
Location: Australia
Quote:
Originally posted by SkinnyBoy
so... we all agree that I can safely go into Tonkins and TELL them that these headunits won't do anywhere near 50watts rms even for a fraction of a second with 100% THD? lol

1. Lies
2. damn lies
3. Statistics
4. Head unit power ratings



ps;

5. Audio power rating in general
  Reply With Quote
Old 23rd January 2004, 03:51 AM   #17
bknauss is offline bknauss  United States
diyAudio Member
 
Join Date: Jul 2002
Location: Gaithersburg, MD
Send a message via AIM to bknauss
Quote:
Originally posted by SkinnyBoy
so... we all agree that I can safely go into Tonkins and TELL them that these headunits won't do anywhere near 50watts rms even for a fraction of a second with 100% THD? lol
Check out Alpine's USA site for the 2004 year (www.alpine1.com). They have the CEA 2006 ratings for amps, and now they're a measly ~15W. BIG difference from 60W per channel.
  Reply With Quote
Old 23rd January 2004, 03:59 AM   #18
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
Quote:
Originally posted by cm961
I'm just going to take my brothers advice and get a head unit which does not contain power amplifiers. That gives them more room to put in a better preamp etc. Makes perfect sense, however they're usually pretty costly. Too bad we can DIY mp3 CD players with really nice preamps (tubes even? Not that I use tubes).

Anyway, my head unit amplifier claims 160W max power into 4 channels. For one, I'm sure there's only two amplifiers in it, and I'm also sure it can't even hit 160W for even the smallest fraction of a second.

My next head unit will be ampless, and all my amps are likely to be gainclones.

Pete
thats why I use my alpine 7939 with digital output.....just a preamp headunit and a better Dac than the reference 7909 unit
  Reply With Quote
Old 26th January 2004, 10:53 PM   #19
chops is offline chops  United States
diyAudio Member
 
chops's Avatar
 
Join Date: Apr 2003
Location: Lakeland, Florida
And that's why I went with the CDA-7995. It's nothing more than just a preamp, plus I would never run anything off of a HU amp anyway.

Click the image to open in full size.
__________________
Charles
  Reply With Quote
Old 27th January 2004, 01:22 AM   #20
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
yes.. well.. I am pretty sure that my friends speakers in his car sounded worse after a few days of use... lol ohh well.. and i really noticed the poor quality amp at any decent volume... he seemed to think it sounded good... it was clipping like mad...
  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
Are there any headunits with digital out? MikeHunt79 Car Audio 9 1st April 2008 03:50 PM
You gotta see this! dshortt9 Everything Else 4 9th August 2004 05:48 AM
Gotta love Black Friday curtis73 Everything Else 0 29th November 2003 08:41 PM
gotta start somewhere---- zx3chris Introductions 4 17th December 2002 12:31 AM


New To Site? Need Help?

All times are GMT. The time now is 04:43 PM.


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