We present ROSAT PSPC observations of the nova-like , or intermediate polar , TT Ari and the eclipsing polar DP Leo .
Observations of TT Ari were performed as part of a simultaneous multiwavelength campaign .
The X-ray spectrum from the ROSAT PSPC ( 0.2-2 keV ) was combined with Ginga observations ( 2-37 keV ) to suggest the presence of at least three distinct emission components : an optically thin plasma ( kT _ { RS } = 0.76 ^ { +0.20 } _ { -0.16 } keV ) , a dominating bremsstrahlung ( kT _ { br } = 16.8 ^ { +4.3 } _ { -3.4 } keV ) continuum and one or more emission lines fit with a single gaussian centered at 6.57 \pm 0.18 keV .
IUE observations show a modulation in the equivalent width of the CIV ( \lambda 1549 ) absorption profile on the spectroscopic period indicating a complex wind structure .

The highly variable X-ray light curve of DP Leo exhibits an intensity dip prior to eclipse which has not previously been observed .
The dip is interpreted as the eclipse of the main accretion region by an accretion stream varying in shape or impact position on the white dwarf with time .
The soft X-ray spectrum is well fit by either a blackbody ( kT = 24.8 ^ { +2.6 } _ { -8.1 } eV ) or a soft power law spectrum ( \alpha \sim 4.0 ) .
No evidence exists for accretion onto the stronger magnetic pole and severe limits are placed upon the flux from any hard bremsstrahlung component .
A distance upper limit of 500 pc is obtained from the X-ray absorption and a distance estimate of 450 pc was derived through the use of published photometry .