I know there have been some threads on this in the past. Nothing that really seemed to help. Co-worker with a DINC2 has low volume on her Dinc2 Speakerphone. This is a refurb she got to replace her last one. My speakerphone has always been nice and loud post-root and pre-root. Likewise another co-worker on a stock Dinc2 has no issue here either. Get another refub or is there anything else I can try?