I'm selling speakers for the first time and concerned about fraud

If you are this freaked out perhaps specify a local only transaction? This is not that uncommon for speaker sales and would give you the peace of mind of an in person transaction.

You could communicate with the buyer that since you both do not have feedback you  want to be a little more creative with this transaction. Maybe have him pay half with certified check and the rest on delivery. So both side have to compromise. If the transaction is successful you both can write glowing feedback on the other.

awright

Why don't you ask this person if he/she has feedback on some other site , and if so see what it states; otherewwise, given the degree of discomfort you have just do a local sale with cash required at delivery as someone else suggested. I've never experienced a problem buying or selling to folks on this site, and in fact haver shipped items simultaneous to them sending payment; but that's just my experience and me.

If, and it's a big if, you can get a local buyer, have them meet you at the local police station for the handoff.  I buy and sell wine regularly and unless I know the person that's what I do.  Scares off any potential dirtbags in a hurry.