Okay, so you know the basic structure of making a dub, and all of the hoops you have to jump through in order to do that. But now you need to think a little more specifically about the process, particularly the voice actors.
When you post the auditions and patiently wait for the try outs to begin you need to keep several things in mind. First of all post audition threads in several places. (Voice Actors Alliance is the number one spot to go for free amateur voice actors, but you may also want to post an audition thread in several places where you are an active community member.)
Second of all, don’t worry if people don’t immediately begin to audition. The more seasoned voice actors probably won’t audition until 24 hours before your deadline. They do this so they don’t have to wait so long to know if they got the part or not.
If it’s just a few hours before the deadline and you still haven’t gotten very many people, extend the deadline another week or half a week, and then start advertising. Get more involved with the forms and be sure to have a link to your audition thread in your signature! The higher your post count the more likely voice actors will think that you’ll stick around and actually go somewhere with your production.
A key to getting good voice actors is to do a series that isn’t dubbed very often. Now I’m not saying go do an obscure series/show that no one has heard of, but do make sure that no one has recently done the project you’re about to undertake.
So let’s say a bunch of voice actors have auditioned for your project, and you’re sifting through all the files, trying to decide on who should be who. Many voice actors will try out for more than one part, so be aware of that too. It’s best if you make a list of who has auditioned, and for what part. One thing to keep in mind about the voice actors are their resumes.
Go to their profiles and see how many projects they are involved in/have been involved in. Go to their past projects and listen to them, try to find out if the producer had any problems with them. The ideal voice actor is someone who had the perfect voice for the part, is polite, gets their lines in on time, and wants to be involved with the project. But most importantly is responsibility.
No offense to new voice actors, but generally they don’t stick around. Yes, some of them go on and become very involved and get a lot of parts, but a lot of new voice actors post a few times, get accepted for a few parts, and then drop out without ever handing in their lines. Beware the new voice actor, but on the flip side you will get some great new voice actors who are excited to get their first part and who will do anything you ask.
If you’re having a hard time casting a certain character, you can always recruit/scout people. You’ll need to check with them and see if they’re available, but often veteran voice actors are open to recruiting, which means if you email them, asking them to be a certain character, they’ll agree to. You basically skip the audition part and hand pick your voice actors. The only problem with this plan is that you picked them, not visa versa. That means that they weren’t particularly thrilled with your project, and while they will be involved with it, it will probably be low on the priority list for them.
Good luck and great casting!