crown d150a - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 3rd June 2005, 07:30 PM   #1
khelben is offline khelben  United States
diyAudio Member
 
Join Date: Jun 2005
Location: oklahoma
Default crown d150a

new to all this so hope im in the right spot

on the back of my crown amp it says " max input 750 watts"

does that mean i can run a line from the input to a speaker output on my yamaha receiver without "burning" the amp?

(the amp connects to a peavey 412s 4 ohm box
__________________
fear profits man nothing
  Reply With Quote
Old 3rd June 2005, 07:40 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Hi khelben,
I think you are mixing up a few things here.
I haven't got a clue what the Max input 750W could be.
The d150a has an output of 2 X 75W IIRC.
Connecting the input of the crown to the output of a receiver is not a good idea. (You will burn things).
Where are the Peavey's connected to? The Yamaha or the Crown?

/Hugo
  Reply With Quote
Old 3rd June 2005, 07:42 PM   #3
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
That number is the power consumption from the wall socket. It doesn't relate to input sensitivity. You'll want to pad down the output of your receiver or, better yet, trace where the receiver power amp input is and connect that point to the Crown.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 3rd June 2005, 07:49 PM   #4
khelben is offline khelben  United States
diyAudio Member
 
Join Date: Jun 2005
Location: oklahoma
peavey> crown> ?need to connect to receiver

the receiver wont power the peavey by itself
__________________
fear profits man nothing
  Reply With Quote
Old 3rd June 2005, 07:49 PM   #5
khelben is offline khelben  United States
diyAudio Member
 
Join Date: Jun 2005
Location: oklahoma
Quote:
Originally posted by SY
That number is the power consumption from the wall socket. It doesn't relate to input sensitivity. You'll want to pad down the output of your receiver or, better yet, trace where the receiver power amp input is and connect that point to the Crown.

pad down?how?

amp input/ from schematic of the receiver?solder in my own connection/mod ?
__________________
fear profits man nothing
  Reply With Quote
Old 3rd June 2005, 07:58 PM   #6
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
You can use a couple of resistors per channel to form the pad. Without knowing anything about the Yamaha, I'd guess that you want something like a 10:1 reduction in voltage. The exact number is not critical. If that's not clear to you, best not start soldering.

The other thing you can do is use the tape monitor output of the Yamaha, then control the volume with the Crown's input attenuators.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 3rd June 2005, 08:13 PM   #7
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
" max input 750 watts"

Power factor on cap input filter is about 0.6

Thus the watts available to consume about 450W

Amp will do 240W bridged at 8 ohms

Efficency is thus about 53%, about right for a class AB amplifier with an unregulated supply.

With a regulated supply the theoretical efficency of a class AB amplifier is 78.5%
  Reply With Quote
Old 3rd June 2005, 08:17 PM   #8
khelben is offline khelben  United States
diyAudio Member
 
Join Date: Jun 2005
Location: oklahoma
ok, set up is <pc sound card- yamaha htr5240-main speakers-crown/peavey as sub>

the yamaha has a sub output that i cant get to work
__________________
fear profits man nothing
  Reply With Quote
Old 3rd June 2005, 08:28 PM   #9
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
The sub output will only work in surround mode, not in normal stereo mode methinks.

/Hugo
  Reply With Quote
Old 3rd June 2005, 08:45 PM   #10
khelben is offline khelben  United States
diyAudio Member
 
Join Date: Jun 2005
Location: oklahoma
so how best , easy way to connect crown/peavey to system?

(yes noob here)
__________________
fear profits man nothing
  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
Crown sa 20 Newpaltzwonder Solid State 5 25th May 2011 10:12 AM
crown xls 602 amp galush Solid State 0 6th April 2009 04:41 PM
Crown Com-Tech 210 Power Amplifier Crown Com-Tech 210 tyler477 Solid State 1 31st October 2008 04:24 AM
Crown D150A Problems hmontgomery Solid State 5 12th August 2008 11:44 PM
crown k2 themedium Solid State 1 19th November 2006 08:25 PM


New To Site? Need Help?

All times are GMT. The time now is 07:41 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