Typically, and sadly, many first time Angel spawns are on filter intake tubes which makes them harder to deal with as the tank needs the filter to keep it clean. Many of these spawns are also unsuccessful because of this reason. I have a theory that because it's on the intake tubes, the milt doesn't have a chance to fertilize the eggs before being swept away but this is just my theory as first time spawners also don't have a good success rate no matter what filters you use. But some do, and that's why I recommend artificially hatching the eggs to see if they were ever fertilized or if the pair is even fertile at all.
Getting back to your questions: No, the vibrations shouldn't be an issue and unless you have other filtration, you shouldn't turn off the filter.If your goal is not to breed the fish, I'd just let nature take it's course as other fish in the tank will try ( and usually eventually succeed) to eat the eggs which happen to be a very good food source for your fish. If the eggs all die, the parents will eat them as well. FYI: If the eggs turn white, they are dead.
One of the nice things about Angelfish is that they are usually prolific breeders so if the last spawn was unsuccessful, chances are you will have another chance at getting it right in about 10-14 days for new breeders. If your goal is to raise some Angelfish fry, I strongly suggest you put the pair in a tank by themselves with just a sponge filter, some artificial plants with smaller leaves ( so the fish don't spawn on them) and a breeding site such as Slate, Tile, Clay Pot or PVC pipe for example. If you would like the parents to try raising the fry, I would use at least a 20gal long tank or a 29 gal. If you are going to remove the eggs and hatch them yourself, the spawning tank can be as small as a 10 gal tank depending on the size of the breeding pair. Either way, an air driven sponge filter is the best way I have found to produce more fry successfully. If you would like more information on breeding Angels, there is a thread here in the breeding forum titled " Wigglers at last!!!" which is all about breeding and raising Angelfish by pro & hobbyist breeders. Just about everything you need to know was discussed on that thread so it should help you out.
A word of caution, if your goal is not to breed the pair, I would still remove them from your tank, if it is a community tank, as breeding pairs of Angels can become extremely aggressive towards their tank mates when spawning time approaches. They can and have killed tank mates trying to protect their eggs. These are not usually one of the gentler Cichlid species that can breed in a community tank.
Hope this helps.
I know I should probably stop fretting about it but it takes my mind off of being irritated at the rams
HEhehehehehe!
I can not even imagine what you are talking about!
No matter where I put the pot dishes they just spawn somewhere else
This pair here still hasn't spawned. Lots of slate cleaning and liplocking. Got any other ideas?
I know I should probably stop fretting about it but it takes my mind off of being irritated at the rams
But you don't want the other fish in the same tank with the breeders. I just use a background between the tanks so that the fish can only see their "competition" in a small section of the tank. As I posted here ( #125 I think) I keep the front 25% of the tank open but the back 3/4 has a background and the breeding slates. Just to show how effective this is, I recently moved the Black Lace Veil pair out from their 30 gal tank with an opaque divider in it into one of the tanks on the breeding rack. In just a few days, I've seen the fish act more aggressively in feeding as well as towards their neighbors. They were quite subdued in the bigger tank by themselves. Today, just a few days after their move, I see the female's tube starting to show. They haven't spawned in almost 8 weeks when their previous spawn ( #2 for them) was just 4 weeks after their first. So that should tell you something. 
It's the fish my Mentor always through up in my face when I would complain about how "unnatural" a new fish color or shape was. "Your favorite fish is unnatural too ya know."
The good news is that I'm sure the pairs will give you more chances at this so if it doesn't work this time, not the end of the world. 
There were more dead eggs than I would have liked but at this point, I just want swimmers from a second spawn from a single pair. I also got a spawn from the Black Lace veils I moved into the breeder row last water change day. It's surprisingly a small spawn but that may be a result of the poor feeding habits while they were segregated in the 30 gal. I already see a better attitude in these fish in the new tank so I am not all that concerned about the small size of this spawn. I even saw a number of dead eggs rather quickly which is why I decided not to pull this spawn. If any of them are still alive tomorrow, I'll pull them then and see what happens. Too early to tell yet tho whether they will swim.
So what caused this? Who knows. Could be any of 3 things and I'm just not going to concern myself with the "why" and just deal with the next spawn. Oh well. So hopefully the eggs will still be there in the morning and I will pull them then. This is a pair that I have been feeding another food from my friend so we will see just how well they do. 
You think they know what they are doing then it looks like they don't.....but they do......sometimes... Just be aware that today's Angels are notoriously bad parents so don't get discouraged if it doesn't work out. Just make sure that they are fertile and a male and female. If you have that, YOU get to decide when you want to have some fry to raise. Just do it artificially. Nice pattern either way. 
