Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
DIY & Tutorials
DIY For Audio
"Left brain going right brain" amplifier
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support AVForums:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="JimGore" data-source="post: 407121" data-attributes="member: 3"><p>Right, let's try this the other way around then - perhaps it would make more sense. My brain does work upside down & outside in sometimes...</p><p></p><p>Imagine I build an amplifier that uses high(ish) rail voltages.</p><p></p><p>Now, imagine I set the gain such that I use the maximum power supply current & voltage when driving a 4 ohm load.</p><p></p><p>Next, I connect a 2 ohm loudspeaker to the amplifier. </p><p></p><p>Q: How do I ensure that the amplifier will drive the 2 ohm loudspeaker to full power & without clipping, whilst also being able to drive an 8 ohm loudspeaker (at another time) to full power & without clipping?</p><p></p><p>My idea is to use adjustable gain. This gain is set ONCE when the amplifier powers up by reading the loudspeaker impedance curve then changing the gain to suit. This does not happen at any other time during playback, etc therefore it is not a limiter or compressor.</p><p></p><p>Thanks,</p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 407121, member: 3"] Right, let's try this the other way around then - perhaps it would make more sense. My brain does work upside down & outside in sometimes... Imagine I build an amplifier that uses high(ish) rail voltages. Now, imagine I set the gain such that I use the maximum power supply current & voltage when driving a 4 ohm load. Next, I connect a 2 ohm loudspeaker to the amplifier. Q: How do I ensure that the amplifier will drive the 2 ohm loudspeaker to full power & without clipping, whilst also being able to drive an 8 ohm loudspeaker (at another time) to full power & without clipping? My idea is to use adjustable gain. This gain is set ONCE when the amplifier powers up by reading the loudspeaker impedance curve then changing the gain to suit. This does not happen at any other time during playback, etc therefore it is not a limiter or compressor. Thanks, Ian. [/QUOTE]
Insert quotes…
Verification
Post reply
DIY & Tutorials
DIY For Audio
"Left brain going right brain" amplifier
Top
