Dear All, I must apologise as I seem to be too slow coming back to you. I posted it Saturday evening and here I am on Monday looking at all your replies. I ticked a box when I posted my question that from memory made me think that I would be notified by email if someone posted an answer. Nothing came into my inbox so clearly I misunderstood the purpose of the box. I didn't expect to get replies that evening and on Sunday couldn't escape my duties to study my laptop. I see that there were several replies on Saturday but although I was watching my account Saturday evening they didn't appear on my laptop then. So I accept your castigations. I see that some participants answered with customary good humour and good advice.
To answer some questions, I have a 2015 Pilote 600GL A class based on Ducato chassis. The Satnav is a Garmin 795 7 inch screen, and it is mounted within arms length on a disc glued to the dashboard. My passenger can't hear the voice commands clearly either. The voice is female, and I can't find a menu that might let me change the gender!!! My previous satnavs have been Navman and Snooper. The Snooper had a headphone socket so I could plug in a powered small speaker and that worked fine. Unfortunately the Snooper ran out of life after 10 years!!!
I like the voice prompts particularly at one of those complicated multi mini roundabout multi exit junctions. Too much studying of the displayed map instead of looking out of the windscreen can be dangerous!!!
Your suggestions are similar to my own thoughts, but its comforting to hear them. I am not alone!!! Well, not entirely. I really do appreciate all the advice given on Out and About Motorhome Forum. Am I allowed out of the naughty corner now??
So.....back to Halfords and to listen to another incarnation of the same model and perhaps a swap to a To Tom.