A nice tool to configure & tweak your SSL setup in Apache.

https://mozilla.github.io/server-side-tls/ssl-config-generator/

Server wide SSL config can be found in %Apache-config-dir%/mods-enabled/ssl.conf

Test your SSL configuration:

https://www.ssllabs.com/ssltest/index.html

Check the Apache error log to make sure there are not to many handshake errors.
Many AH02042 errors can be a good reason to lower the cipher strenght

cat /var/log/apache2/error.log | grep ssl
cat /var/log/apache2/error.log | grep SSL