/----------------------------------------------------------\
|        *  L   *         *  C   *         *  R   *        |
|        * spkr *         * spkr *         * spkr *        |
|      ------------------- screen -------------------      |
|                                                          |
|                                                          |
|                                                          |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
\                                                          \
/                                                          /
\                                                          \
|* S  *  UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU  * S  *|
|*spkr*  UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU  *spkr*|
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|        UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU        |
|* S  *  UUUUUUU  UUUUUUUUUUUUUUUUUUUUUUUU  UUUUUUU  * S  *|
|*spkr*                                              *spkr*|
|        * S  *                              * S  *        |
|        *spkr*                              *spkr*        |
\----------------------------------------------------------/