JEFF ROWLAND CONTINUUM 250, Owner'S Manual

Page 1: ...OWNER S MANUAL CONTINUUM 250 500 INTEGRATED amplifier...

Page 2: ...ntroduction 2 Product Features 3 Package Contents 4 Initial Inspection 5 Maintenance Cleaning 6 7 Protection Systems 7 Installation Use Care 8 9 Remote Transmitter Operation 10 11 Front Panel Function...

Page 3: ...panel of the chassis Please include this number with any correspondence regarding your CONTINUUM Integrated Amplifier It has been my joy to create an audio component of enduring value that reflects th...

Page 4: ...rld wide mains operating voltage Low power consumption permits constant power up operation to eliminate warm up time Optical encoder type volume control maintains quiet trouble free perfor mance and a...

Page 5: ...d below are enclosed within the shipping carton and accessory box Refer to the illustrations and verify that the proper components are included PA C K A G E C O N T E N T S OWNER S MANUAL Continuum 25...

Page 6: ...tions and a minimum 72 hour burn in period prior to shipment and should therefore be in perfect operating condition upon delivery If the amplifier does not operate correctly please notify your dealer...

Page 7: ...l fashion of most audio and video equipment there are a few rules that must be kept in mind when cleaning the equipment Please allow the front panel which is coated with an automotive grade polyure th...

Page 8: ...sis Protec tio n System s The CONTINUUM Integrated Amplifier is equipped with internal fuses for pro tection against excessive AC current draw however since no protection circuitry or system can compl...

Page 9: ...e installed in any number of music film and surround sound systems For connection instructions for a typical two channel stereo system please see page 14 and 15 of this manual For instructions regardi...

Page 10: ...y other than according to official service bulletins from JRDG Otherwise the factory warranty will be immediately voided Be sure the amplifier is muted red front panel indicator light on before connec...

Page 11: ...input Once Input 4 has been reached the next press of the INPUT button will select the BYPASS input Another press of the INPUT button will return the selection to Input 1 2 MUTE This button will imme...

Page 12: ...el of the right channel by 0 5 dB A total shift of 6 dB is possible The balance control is not continuous holding the button down will not continue to shift the balance The button must be repeatedly p...

Page 13: ...e input is currently active 2 INPUT SELECTOR BUTTONS Pressing these buttons selects an input source CD tuner phono etc connected to the associated rear panel inputs see Rear Panel Signal Connections o...

Page 14: ...te the red indicator light below the MUTE button Pressing this button again will turn off the light and restore the output of the amplifier to the previous volume setting To avoid spurious noises and...

Page 15: ...phono option please contact your dealer NOTE To reduce audible pops when switching between inputs install RCA shorting plugs available from your JRDG dealer into all unused RCA unbalanced inputs The...

Page 16: ...b must be pressed to disconnect the XLR interconnect cable from the amplifier The XLR inputs may be left open if unused Any XLR input can be converted to an RCA input by installing an XLR to RCA adapt...

Page 17: ...a plugs or bare wire connections can be used but require an optional clamp available from your JRDG Dealer WARNING Both positive and negative outputs are electrically active with respect to chassis an...

Page 18: ...from AC mains unless it is to be moved or reinstalled in another location It is recommended that the unit simply be left on when not in use WARNING Serious damage to internal circuitry can occur if im...

Page 19: ...1000 Gain Structure Preamplifier Section 14 dB Amplifier Section 26 dB Volume Control Range 99 5 dB Volume Control Resolution 0 5 dB 0 05 dB Over Entire Range Common Mode Rejection Ratio 85 dB 20 Hz...

Page 20: ...eff Rowl and Design Group 2009 All Rights Reserved 19 D I M E N S I O N S OWNER S MANUAL Continuum 250 500 integrated AMPLIFIER 4 75 in 121 mm 15 5 in 394 mm 15 6 in 396 mm 5 3 in 135 mm 13 5 in 343 m...

Page 21: ...INUUM Integrated Amplifer because of your actions Further accessing the interior of your CONTINUUM by removing the bottom cover can expose you to dangerous potentially lethal electrical voltages Thus...

Page 22: ...SPLAY BLANKING ON See FIGURES 2 and 3 STEP 4 Replace the bottom cover Using a Using a 5 64 hex wrench reinstall the nine screws that secure the bottom cover to the chassis FIGURE 3 Jumpers J1 J2 Close...

Page 23: ...UM if interference occurs when using the factory default settings This interference could occur either from the CONTINUUM s remote interfering with other equipment or vice versa Step 1 Unplug the CONT...

Page 24: ...pins 2 and 3 See FIGURES 4 and 5 STEP 4 Replace the bottom cover Using a 5 64 hex wrench reinstall the nine screws that secure the bottom cover to the CONTINUUM chassis STEP 5 Using a 1 Phillips head...

Page 25: ...e from the wall AC outlet STEP 2 Place the unit upside down on a soft clean surface Using a 5 64 hex wrench remove the nine screws that secure the bottom cover of the unit Step 3 Locate and remove the...

Page 26: ...hms Settings used for Moving Coil cartridges only H1 H2 Gain 40 dB Load 47K ohms Settings used for Mov ing Magnet cartridges only H1 H2 Gain 50 dB Load 47K ohms Settings used for High Output Moving Co...

Page 27: ...PO BOX 7231 COLOR ADO SPRINGS COLOR ADO 80933 USA E mail jrdg jeffrowland com WWW JEFFROWL AND COM TELEPHONE 7 19 473 1181...