Apache 2.40
Кодировку по-умолчанию в .htaccess?

Типа DefaultCharset

Вот это не поможет:

AddDefaultCharset

Description: Default character set to be added for a response without an explicit character set
Syntax: AddDefaultCharset On|Off|charset
Default: AddDefaultCharset Off
Context: server config, virtual host, directory, .htaccess
Override: FileInfo
Status: Core
Module: core

This directive specifies the name of the character set that will be added to any response that does not have any parameter on the content type in the HTTP headers. This will override any character set specified in the body of the document via a META tag. A setting of AddDefaultCharset Off disables this functionality. AddDefaultCharset On enables Apache's internal default charset of iso-8859-1 as required by the directive. You can also specify an alternate charset to be used. For example:

Example: AddDefaultCharset utf-8


Источник: http://httpd.apache.org/docs-2.0/ru/mod/core.html