Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Setting power amp so speakers don't blow (help a novice)
Setting power amp so speakers don't blow (help a novice)
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
Thread Tools Search this Thread
Old 29th May 2009, 02:23 AM   #1
drumstruck is offline drumstruck  United States
diyAudio Member
Join Date: Feb 2009
Default Setting power amp so speakers don't blow (help a novice)

I would appreciate a little schooling...
I recently upgraded our band's P.A. - pair of Nady 15 inch PS115 passive speakers 250 rms, 500 peak, and a Gemini 750 power amp.
It appears I blew the horns on the speakers almost immediately. Can someone guide me on how I can make sure I control the power amp's output?

The amp has a bunch of specs - so many watts at so many ohms. I assume since the speakers say they are 8 ohms, then that is the wattage I should refer to in the amp's specs. In parallel-mono it says the amp puts out 190 watts, stereo 175 watts, and in mono-bridged 550 watts.
So I tried all 3 settings with the amp level at about 2/3. I believe they were in parallel-mono when they blew the horns.
What exactly is happening here? Does setting the levels on the power amp affect how much wattage goes to the speakers? Does the mixer I have between the mics and the amp affect the wattage to the speakers? Given the specs, what is the ideal setup (max loudness without blowing the speakers) for my amp and mixer?
The Gemini manual says to turn to mixer to 0, turn the amp all the way up, and then adjust the mixer up. Is this safe to do?

Thanks so much for any pointers!
  Reply With Quote


Setting power amp so speakers don't blow (help a novice)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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kharma's $1-Million Speakers Blow a Hole in Everything Nordic Multi-Way 84 5th August 2007 12:36 AM
can computer speakers blow? sjm3100 Multi-Way 2 21st June 2005 08:36 AM
Just had a power cap blow! azira Parts 19 24th June 2004 09:28 AM
Speakers Causing Amps to Blow? Old Corps Everything Else 3 1st May 2004 12:03 PM
extreme novice on amps, speakers theChris Solid State 8 16th November 2002 02:33 AM

New To Site? Need Help?

All times are GMT. The time now is 03:11 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio