Solid improvement dude. Seems like you are starting to hit on something solid here. A couple of thoughts:
Start to really feel into the words you are saying. The essence of a seductive voice is the feeling behind it. These aren't just words. They mean something. What do they mean to you? "starts from his heart, his center, his core." You know what it's like to come from your center, your core. Put that energy into your words. Something that can help with this is pacing. Overall your pacing is solid. But think about the rhythm of your words. Where can you pause just a little more, when do you bring a little more energy? Keep things rolling, but don't rush. Use the rhythm and the feeling to create a sort of entrancing sort of tone. Moments that suck you in, and moments that lift you up. moments that are slow and sensuous, moments that are strong with passion. Think about each word and pause as a beat. It doesn't have to be rigid like with a metronome or anything. But just
think...about... the rhythm. of the words....the FEELING behind it all....Smoldering... deep.... filled with PASSION.. rich with seductive energy.
I'd also say you could stand to be just a touch more assertive. Not forceful or overly dramatic but just speak like you really believe what you are saying
You're definitely honing in close so these suggestions arent for you to rework the whole thing. More so just to take what you have developed to a deeper level.
Ultimately once you have honed in, the goal is to make your voice just feel natural. Like it is just coming from who you are.
Who you are is someone who means what he says.