YORKVILLE BASS MASTER 400 User Manual

Also see for BASS MASTER 400: Service manual

Contents

EFX Send / ReturnFRONTThe signal at the EFX SEND jack is used to feed anexternal effects device. The EFX RTN jack, whenused,disconnects the original signal going to thepower amplifier as well as the Line Output, thesignal is replaced with the signal from the EFX RTNjack. Together, both jacks form the effects loop. Theeffects loop Level is 1Vrms.REAR PANELThe rear panel effects-loop is post front panel effectsloop. The phone plug ring is EFX SEND and the tip isEFX RTN, the sleeve is ground.PowerThe red LED above the power switch will light whenthe BASS MASTER 400 is ON.Output JacksTwo parallel power amplifier output jacks are locatedon the back panel. The minimum impedance of theexternal speaker load is 4 Ohms. The poweramplifier is electronically and thermally protectedagainst unsafe loads. If the thermal protectionactivates, reset will occur when the heatsink hasslightly cooled.SpecificationsPower> 725W, 4 Ohm load1kHz, 2 cycle burst 750W typical> 400W, 4 Ohm load1kHz, continuous at 5%THD 440W typical>300W, 8 Ohm load1kHz, continuous at 5%THD 315W typical* Measurements made with regulated 120V supply.SensitivityInput 0dB < 25mVrmsEffects Return < 1Vrms750mVrms typicalDC Offset < 60mV15mV typicalHum and Noise > -90dB below max output voltage, unweighted-94dB typical* Measurements made with GAIN and VOLUME at 5, CONTOUR and EQoff.