I've actually found that when switched to silent Siri whispers. Call me crazy but I was wondering why the heck she sounded so weird. Haha 
Siri has independent volume settings. Hold home button down until Siri pops up, then immediately adjust the volume using the phone's side buttons.
Thank you. This is exactly what needed to be done, and if someone doesn't know how to do this then this little bit of advice is very helpful.Siri has independent volume settings. Hold home button down until Siri pops up, then immediately adjust the volume using the phone's side buttons.
And as of iOS 9 the Siri "beep" has even been removed on iPhones.Thank you. This is exactly what needed to be done, and if someone doesn't know how to do this then this little bit of advice is very helpful.
Oh my gosh it's true thank youSiri has independent volume settings. Hold home button down until Siri pops up, then immediately adjust the volume using the phone's side buttons.
This worked, but the label for the volume said "heaphones" while i was lowering it. This is confusing and they should have a mixer in the control panel to set multipile volume levels and keep them such as headphone/audio out, siri, ringer volume, alert volume etc.I can't believe I overlooked this... Thanks mate!
You literally saved my sanity tonight!! Not sure how old this post is, but soooo glad I found your answer! The “ding-dong” anytime I try to do the “talk-to-text” was about to drive me nuts!Siri has independent volume settings. Hold home button down until Siri pops up, then immediately adjust the volume using the phone's side buttons.