| MIDDLEAGES | About 40 between 400 and 1400? (6,4) |
| BISHOPSWARS | Conflicts of 1639-40 between Scotland and England over changes to religious practice (7,4) |
| DECLASSIFY | Release publicly and freely CD and files, say |
| CLAVICHORD | Instrument developed from the medieval monochord that flourished from about 1400 to 1800 and was revived in the 20th century. Rectangular in shape, and its case and lid were usually highly decorated, |
| GOBIDESERT | About 40 percent of the Mongolian Plateau is the ___ (4,6) |
| MAKETRACKS | Put songs on to CD and leave (4,6) |
| OLDFRISIAN | Germanic language spoken in northern parts of the Netherlands up to about 1400 |
| WENCESLAUS | Holy Roman emperor, 1378-1400 |
| TWOORTHREE | 1400 hours or 1500 hours for a few (3,2,5) |
| PONTEFRACT | Castle in West Yorkshire in which King Richard II of England reputedly died in 1400 (10) |
| SUPERAMERICA | Nameplate attached to Ferrari's 400 and 410 (12) |
| SUPERAMERICAS | Ferrari's 400 and 410 models (13) |
| EROS | Notes about asteroid four hundred and thirty three |
| KATIELEDECKY | Swimmer who broke the world records in the 400- and 800-meter women's freestyle in Rio: 2 wds. |
| ADDINGTON | Swimmer who won two gold medals at the 2008 Summer Olympics in the 400- and 800-metre freestyle (9) |
| ALBERTO | ___ Juantoreno, only athlete to have won the 400 and 800 metres at the same Olympics (7) |
| MUSICCENTRE | Hi-fi unit with (eg) CD and cassette players and a radio |
| HALFPENNY | Four hundred and eighty such in one pound, once |
| SALAMIS | Greek victory over Persians (four hundred and eighty BC), sausages |
| AMID | Among a thousand, four hundred and ninety-nine (4) |
