#1
Howdy folks. First I wanted to say that this is my first post and I really don't know much about the mechanics of guitars. So there's that.
I recently bought a Washburn Festival and after researching I've set the action and intonation. Everything sounds good to me except when the guitar is amplified the A and D strings are very muted. There is some sound but the other strings are much louder and more crisp. It sounds great when it is not amplified. Any suggestions??
#2
Welcome lulu.

If the pickup is an under-saddle piezo (acronym UST) it might simply be a dud. Some types are very sensitive to the contact between the UST and the bottom of the saddle slot and/or bottom of the saddle. Poor contact between the UST and the guitar can therefore cause symptoms such as yours, and can be due to things like a non-level slots or saddle, or even dirtor wood shavings in the slot.

I would take it to a tech.
#3
Quote by luluvantuckett
...[ ]....I recently bought a Washburn Festival and after researching I've set the action and intonation....[ ]....
If as you say, "you've set the action", there is a very distinct possibility that the bottom of the saddle is not, dead flat & straight, and/or, the bottom of the saddle is not at true a true right angle with the vertical faces.

This is pretty much what Tony said, (but specific to the part you tampered with), just differently worded. It takes a fair amount of patience, not to mention a flat plate glass surface and straightedge, to get those saddles dead on true.
#4
Quote by Tony Done
. . . . Poor contact between the UST and the guitar (saddle) can therefore cause symptoms such as yours, and can be due to things like a non-level slots or saddle, or even dirtor wood shavings in the slot.. . .


Hello & Welcome

In my experience poor contact between UST and saddle base is almost always the cause of volume imbalance across the strings.

You can do an easy fix using self-hardening model clay available from craft shops. See here for the method:

http://www.harmonycentral.com/forum/forum/guitar/acapella-42/1317111-