Roundhouse 2-6-0 DCC-Slow on DC

[Sunshine Express]

I have just bought a Roundhouse 2-6-0 DCC/Sound Loco,and it runs very slow on DC. My other DCC Locos,are Spectrum 4-4-0,Proto 0-6-0,both run very well on both systems. Does the sound rob the loco of some voltage  when on DC,?  I have not changed the DCC programming from the factory default.

[ABC]

Does the sound rob the loco of some voltage  when on DC,?

That is a good possibility.

[Nigel]

That, and most (all?) MDC steam locomotives are geared very low.

[bobwrgt]

I have the Roundhouse 2-8-0 Dcc w/sound and they do run slow. The instructions  also say Max 18volt. I run approx 15 volts.

Bob