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
How bad is pro-amplifiers really?
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="Hennie" data-source="post: 34280" data-attributes="member: 20"><p>Makes sense. I would look at the bias current, volume pots, caps and op-amps. Many have soft-clipping and high pass filters which could be removed - usually low cost Jap op-amps.</p><p></p><p>With some pro-amps the PSU caps are quite small.</p><p></p><p>Many have an unusual configuration (I think they call it a floating rail) which uses a PSU without centre tap. It ultimately requires a big electrolytic cap in series with the output. I think this is used to prevent DC on speakers in case of a blow-up.</p><p></p><p>Maybe a good idea to mod one for which you can get the circuit diagrams beforehand?</p></blockquote><p></p>
[QUOTE="Hennie, post: 34280, member: 20"] Makes sense. I would look at the bias current, volume pots, caps and op-amps. Many have soft-clipping and high pass filters which could be removed - usually low cost Jap op-amps. With some pro-amps the PSU caps are quite small. Many have an unusual configuration (I think they call it a floating rail) which uses a PSU without centre tap. It ultimately requires a big electrolytic cap in series with the output. I think this is used to prevent DC on speakers in case of a blow-up. Maybe a good idea to mod one for which you can get the circuit diagrams beforehand? [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
General Discussion
How bad is pro-amplifiers really?
Top