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

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.

My first transaction was selling a Camelot Technologies Lancelot Pro phono preamp. The gentleman was a Dr. of Opthamology. (eye surgeon) He too, was cautious about a transaction with me since I had no feedback at the time. I assumed the responsibility  of sending him the phono preamp with no payment of any kind. Telling him that once he received it, and checked it out to be not DOA, he would send me my money. Fortunate for me he was the person he said he was, and sent me a postal money order. I guess I should look at myself as being quite lucky in that transaction.

@yyzsantabarbara 
You have a point worth considering. The seller and buyer should communicate. A quick phone call can reveal much about a person. If you still feel unsure, then cancel the deal.
Bob