Music levels for triamplification - diyAudio
Go Back   Home > Forums > General Interest > Everything Else
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 8th January 2001, 04:18 AM   #1
diyAudio Member
Join Date: Dec 2000
Location: Illinois Occupation:Dentist
Send a message via AIM to Glen Orr
I have a tri-amplified system with electronic crossovers at 800 and 3500 Hz. At present, the bass amp is 80 watts, the midrange is 30 watts, and the tweeter is 10 watts. They are all class B amplifiers and I am designing class A amps for the midrange and tweeter.

Since the new amps are going to be class A, I obviously don't want them to be any larger than necessary (I'm a little cramped for space.) Four (4) watts should be more than adequate for the tweeter, but I'm not sure about the midrange. Some time ago, I saw published somewhere the relative average spectrum of speech and music, voltage (power) vs. frequency, that I could base my decision on, but I can't find it anywhere.

Can anyone help me? Thanks.
  Reply With Quote
Old 30th January 2001, 04:07 PM   #2
diyAudio Member
Join Date: Oct 2000
Location: Sunnyvale, CA
I have a similar system. I am using 15 Watts on all three channels. It goes as loud as my neighbors will stand. You will need to know your driver sensitivities. All three of mine are 91dB/W/m. I figure, just get the sensitivity of your diver (let's say 90dB) and start with 1 watt. For every 3dB double the power. So:

90dB - 1W
93dB - 2W
96dB - 4W
99dB - 8W
102dB - 16W

I think that is right. It sounds enough like that in my system that I never looked it up. I suppose all this is at 1m distance, but my head hurts after all this math, so I will ignore that.
  Reply With Quote
Old 31st January 2001, 10:41 AM   #3
diyAudio Member
Join Date: Jan 2001
Location: Westport, CT
Question Triamplification Power Levels

I have read that there is significant risk in in triamping of having too much power available to the tweeters. Some even recommend staying with biamping to avoid the risk of blowing them with an unexpected transient. I am not sure how maximum power handling applies to tweeter specs and how this relates to amplifier power specs. Can anyone clarify this?
  Reply With Quote
Old 1st February 2001, 08:13 PM   #4
diyAudio Member
Join Date: Nov 2000
Location: Minnesota
Default check out these articles

Read the biamp article and maybe the active crossover project. I believe that is where I have seen the information you are looking for.
  Reply With Quote
Old 1st February 2001, 08:14 PM   #5
diyAudio Member
Join Date: Nov 2000
Location: Minnesota
Default speaker efficiency

Don't forget to account for differences in speaker efficiency double the wattage for every 3 db.
  Reply With Quote
Old 2nd February 2001, 04:03 AM   #6
diyAudio Member
Join Date: Dec 2000
Location: Illinois Occupation:Dentist
Send a message via AIM to Glen Orr
My tweeters are rated at a maximum of 5 watts rms, which is much higher than you would expect to find in music program material. Many tweeters that are rated, let's say, 150 watts (meaning they can be used in a 150 system) would be fried instantly if you tried to put a 150 watt rms sine wave through it. Most of the power in music, and hence in that part of you music system, is in the lower frequencies.

All my speakers are very close in sensitivity.

I'll check out the website in Austrailia.... thanks.
  Reply With Quote


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
microphone levels theChris Everything Else 5 24th May 2009 07:37 AM
Output levels. argonrepublic Parts 0 31st July 2005 10:36 PM
Audio Levels poulkirk Everything Else 7 17th September 2003 02:50 AM
JE Labs 300b round 5. MUSIC!! MUSIC!! TubeHound Tubes / Valves 14 11th January 2003 12:02 AM

New To Site? Need Help?

All times are GMT. The time now is 07:36 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2