I always setup 2 effects first.  1/4 note delay and a hall verb at 2 seconds with a pre-delay of 125ms and high cut of 6k. The verb I call the pixie verb. I add +5 db to all the backup vocals compared to the lead vocal. It’s adds pixie dust and glue to the backups vocals. The early reflections in the reverb will start after the pre-delay (or init-delay) and add a built in slap. For the EQ of the delays, I will cut 3k and above for the delays. This will make the delays fit better in the mix (adding glue) and still not stand out. Set the level of the 1/4 note to just when you start to hear it. It should sound like a ducking verb (hear the tail after the words). If you are using a DAW, then your plugin will use the host tempo of your song. For Front of House (FOH) sound then you will need to tap the tempo in or get the tempo from midi or Word Clock.  In the Studio I use a Waves H-Delay. On a slower song sometimes I’ll use a 1/8 note delay.

I use the ValhallaVintageVerb for $50. I get a great sound from the verb and is great on CPU loading.

For FOH I put the “predelay” to 125ms. Predelay is your friend. The big Predelay number will make the mix not get muddied up. This makes the verb a lot clearer (hearing the words of a song). If you are in a big room, you only need Delays because the room already has lots of reverb in it. If you have a digital mixing board then I setup a user defined key for the tap for the delays. During a live show then the first thing that I do is tap the delays in.

This is the 1/4 note delay setting for the Behringer X32 and M32

For the verb on a X32 I will use the Vintage Room

Doubling

I use this for most every Chorus line in a song. When I record a song, I always do many takes so that latter I can use the extra takes to give me a double effect. I will take the doubled track and lower the volume down 10db compared to the main lead vocal. If you didn’t record multiple takes or the takes don’t double well together then I will (copy complete or duplicate the track) the main vocal track and delay the copied track by 20ms and bring down 10db.

Space in the Mix

The lead guitar usually has the most reverb compared to anything else in the band. Keys usually have some verb on them.  You should be all-way looking for something in your mix that you can add a lot of verb to. Think of it like making your mix  3 dimensional versus  2 dimensional (flat) song.