Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered 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
Audio and Video Talk
General Discussion
Forum DIY Headphone amp kit
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="gbyleveldt" data-source="post: 69161" data-attributes="member: 122"><p>Attached is the schematic of the unit, except for the PSU. I leached this somewhere off the web, can't remember where to be honest. What is interesting about the design is that the TPA6120 is run in inverting mode. According to the datasheet, this configuration offers the best distortion performance. There's a catch though, it needs to be driven by a low impedance source. Because it's not possible to guarantee a low impedance source will be provided, you have to have a buffer stage before the TPA. I generally use OPA2134's here, but many other Duals can be used.</p><p></p><p>Oh, and I've got nothing to hide by not showing component values. I was just too lazy to put them in, as it was for my own use. I'll do that in due course.</p></blockquote><p></p>
[QUOTE="gbyleveldt, post: 69161, member: 122"] Attached is the schematic of the unit, except for the PSU. I leached this somewhere off the web, can't remember where to be honest. What is interesting about the design is that the TPA6120 is run in inverting mode. According to the datasheet, this configuration offers the best distortion performance. There's a catch though, it needs to be driven by a low impedance source. Because it's not possible to guarantee a low impedance source will be provided, you have to have a buffer stage before the TPA. I generally use OPA2134's here, but many other Duals can be used. Oh, and I've got nothing to hide by not showing component values. I was just too lazy to put them in, as it was for my own use. I'll do that in due course. [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
General Discussion
Forum DIY Headphone amp kit
Top