any public address amp ??? - 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 27th March 2005, 08:27 PM   #1
diyAudio Member
 
Join Date: Jul 2004
Location: Kayseri/Turkey
Unhappy any public address amp ???

hi all
any 300w+ Public Address pcb layout ????
( i cant convert the schematic , i m lookin for pcb layout ) ...
and not tube plz ... ( wanna use for a bass guitar amp ... )
__________________
Marge, don't discourage the boy! Weaseling out of things is important to learn. It's what separates us from the animals! Except the weasel.
  Reply With Quote
Old 28th March 2005, 08:59 AM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Kayseri/Turkey
any ...????
__________________
Marge, don't discourage the boy! Weaseling out of things is important to learn. It's what separates us from the animals! Except the weasel.
  Reply With Quote
Old 28th March 2005, 09:24 PM   #4
diyAudio Member
 
Join Date: Jul 2004
Location: Kayseri/Turkey
hii .. thnx a lot .. are they public address amps ??
& what s diffrence between a hifi and a PA amp ???
__________________
Marge, don't discourage the boy! Weaseling out of things is important to learn. It's what separates us from the animals! Except the weasel.
  Reply With Quote
Old 29th March 2005, 02:08 AM   #5
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
Hifi amps are consumer goods intended for use in the home. PA amps are professional Audio products and are intended for use in commercial sound applications.

Largely the difference is in construction and features. PA amps will usually be heavier in construction, and usually made with dimensions suited to rack mounting. The front panel then usually has the rack mounting ears.

PA amps will almost always have level controls. Generally the PA amps have at least 1/4" input jacks and often also XLR inputs. Many include balanced inputs. Hifi amps commonly use RCA jacks at input.

PA amps will often have more than one kind of output connection. 1/4" jacks are common, as are binding posts. More and more amps are now featuring Speakon connectors, especially the higher powered ones. In the case of 1/4" jacks, many times there will be more than one per channel to accomodate multiple speakers connected to a channel.

Many PA amps are bridgeable. I don't know, but I doubt hifi does that much. Nicer PA amps also include low filters, phase inversion,parallel mono input, other options.

And 400 watts per channel is a small PA amp. 1500 watts per channel is relatively large. I would be surprised at a hifi amp with that kind of push.

PA amps can be expected to put out their rated full power at low freqs for extended periods.

PA amps likely have a lot more protection circuitry in them. MAny of them have as part of the checkout testing, driving the output into a dead short to test current limiting.

I am sure there are other things, but yuo get the idea.

On the whole they sound prety good, but getting that last .005% of distortion out of there is a low priority.
  Reply With Quote
Old 29th March 2005, 07:40 AM   #6
diyAudio Member
 
Join Date: Jul 2004
Location: Kayseri/Turkey
wow ,, it seems it s better if i forget to build one .. lol
__________________
Marge, don't discourage the boy! Weaseling out of things is important to learn. It's what separates us from the animals! Except the weasel.
  Reply With Quote
Old 29th March 2005, 02:56 PM   #7
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Smile Hi buddy

People call PA amp as Public Address amplifier, but in reality its an sound operator's PERSONAL ASSISTANT amplifier
Attached Images
File Type: jpg t4.jpg (63.4 KB, 177 views)
  Reply With Quote
Old 29th March 2005, 04:36 PM   #8
Giaime is offline Giaime  Italy
diyAudio Member
 
Giaime's Avatar
 
Join Date: Oct 2004
Send a message via MSN to Giaime
Default Re: Hi buddy

Quote:
Originally posted by Workhorse
People call PA amp as Public Address amplifier, but in reality its an sound operator's PERSONAL ASSISTANT amplifier
Does it need some high efficiency speakers? Maybe 104dB?
  Reply With Quote
Old 29th March 2005, 04:57 PM   #9
Warp Engineer
On Holiday
 
AudioFreak's Avatar
 
Join Date: Oct 2001
Location: Queensland, Australia
PA can mean Public Address or Pro Audio ... These 2 terms are usually used for different applications.

Public address is more typically 70V or 100V lines feeding transformer coupled speakers typically mounted in ceiling etc.

Pro Audio more similar to hifi amps except they usually have higher build quality, greater efficiency, more features etc than hifi amps. That is not to say they sound better than hifi amps... with very few exceptions, hifi amps sound better for critical listening.
__________________
- Dan
  Reply With Quote
Old 29th March 2005, 05:49 PM   #10
Giaime is offline Giaime  Italy
diyAudio Member
 
Giaime's Avatar
 
Join Date: Oct 2004
Send a message via MSN to Giaime
Quote:
Originally posted by AudioFreak
they usually have higher build quality
NO! THIS CAN'T BE! Remember that here there is people who paid 10k$ for an amp... that's offensive

Btw is there a use for an old public address output transformer? I mean is it too low impedance for some tube stuff?
  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
Scott 99B & 99C Public Auction Find Trout Tubes / Valves 11 12th October 2011 11:46 AM
CB Radio Public Address(PA) Wattage? silentblackhat Car Audio 10 20th June 2007 05:27 AM
public address amp p robertson Solid State 0 30th September 2006 08:53 AM
The top secret public KWAK-CLOCK peranders Digital Source 27 14th November 2005 05:20 AM
Public opion poll.........anyone? Fred Dieckmann Everything Else 51 26th May 2004 09:11 AM


New To Site? Need Help?

All times are GMT. The time now is 07:01 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