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We present results of the combined photometric and spectroscopic analysis ofthree detached eclipsing binaries, which secondary components are not visibleor very hard to identify in the optical spectra - ASAS J052743-0359.7, ASASJ065134-2211.5, and ASAS J073507-0905.7. The first one is a known visual binaryADS 4022, and we found that it is a quadruple system, composed of twospectroscopic binaries, one of which shows eclipses. None of the systems waspreviously recognized as a spectroscopic binary.  We collected a number of high-resolution optical and IR spectra to calculatethe radial velocities (RVs) and later combined them with MITSuME and ASASphotometry. The IR spectra were crucial for secure identification of the coolercomponents' lines. RV measurements were done with the TODCOR technique, and RVcurves modelled with our own procedure V2FIT. Light curve modelling wasperformed with JKTEBOP and PHOEBE codes. Temperatures and metallicities of twosystems were estimated from spectra. For the ADS 4022 system we also used thearchival WDS data and new SOAR observations in order to derive the orbit of thevisual pair for the first time. Ages were estimated by comparing our resultswith PARSEC isochrones.  The eclipsing pair A052743 A ($P=5.27$ d) is composed of a 1.03(6) M$_\odot$,1.03(2) R$_\odot$ primary and a 0.60(2) M$_\odot$, 0.59(2) R$_\odot$ secondary.The components of the $P=21.57$ d non-eclipsing pair B likely have masses inbetween the two eclipsing components, and both pairs are on a $\sim$188 yrorbit around their common centre of mass. The system A065134 ($P=8.22$ d)consists of a 0.956(12) M$_\odot$, 0.997(4) R$_\odot$ primary and a 0.674(5)M$_\odot$, 0.690(7) R$_\odot$ secondary. Finally, A073507 ($P=1.45$ d), whichconsists of a 1.452(34) M$_\odot$, 1.635(12) R$_\odot$ primary and a 0.808(13)M$_\odot$, 0.819(11) R$_\odot$ secondary, is likely a PMS system.

astronomy and astrophysics

Orbital and physical parameters of eclipsing binaries from the All-Sky  Automated Survey catalogue - X. Three high-contrast systems with secondaries  detected with IR spectroscopy