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SPECIAL DESIGN FEATURES 

MACHINED ALUMINUM CHASSIS:

 

Precision-machined chassis with integrated heat-

sinks, milled from a solid block of aircraft grade aluminum, provides exceptional 
thermal heat transfer/dissipation, RFI/EMI shielding, and resonance control.

CERAMIC CIRCUIT BOARDS:

 

All audio circuits are implemented on mil-spec, multi-

layer, low dielectric constant, Rogers™ ultra-rigid ceramic circuit board substrate 
for extremely low energy retention and absorption. Large low impedance ground 
planes areas for extended internal star-grounding.

COMPOSITE CIRCUIT ARCHITECTURE:

 

Unique composite circuit architecture 

incorporating separate Class AB voltage and current gain blocks with an 
innovative error correction loop, delivering a sensuous grain-free musicality of 
unparalleled transparency and low level resolution.

BALANCED TOPOLOGY:

 

Inherent cancellation effects of balanced topology 

implemented throughout all power and input/output circuits ensures greatly 
reduced distortion and noise under dynamic signal conditions.

HIGH-CURRENT COPPER BUS-BARS: 

High-current, dual polarity, ultra low 

impedance copper bus-bars distribute both power supply input current and signal 
output current, virtually eliminating intra-circuit EMI signal contamination, greatly 
reducing internal wiring, while increasing circuit board rigidity.

HIGH-PRECISION SURFACE MOUNT COMPONENTS: 

Extensive use of Lead (Pb)-free, 

low temperature coefficient, active and passive surface-mount components 
results in significantly smaller loop areas, reduced circuit capacitance and 
inductance, and introduces less noise than conventional leaded components.

TRANSFORMER-COUPLING AND ISOLATION: 

Transformer coupled input circuitry 

provides universal component compatibility and virtually eliminate ground loop 
noise and RFI/EMI. Transformer coupling ensures identical amplifier overall gain 
when using unbalanced input adapters.

POWER FACTOR CORRECTION: 

Power Factor Correction (PFC) in the power supply 

reduces AC line harmonic noise pollution and increases AC line power utilization 
to 99%.

HIGH-EFFICIENCY SWITCH-MODE POWER SUPPLY: 

Highly efficient, compact, light 

weight, 1500 watt DC switch-mode power supply provides optimum voltage 

PAGE   6

Summary of Contents for 735

Page 1: ...Model 735 MONOBLOCK AMPLIFIER Operational Manual Jeff Rowland Design Group 2020 All Rights Reserved...

Page 2: ...d 3 wire grounded AC cable ground terminal is defeated or lifted or the unit is connected to a 2 wire ungrounded AC outlet The MODEL 735 MONOBLOCK AMPLIFIER is designed to perform optimally with no ad...

Page 3: ...with Jeff Rowland Design Group Inc Said determination shall be made as soon as possible following receipt of the product Jeff Rowland Design Group Inc may at its option require from the purchaser val...

Page 4: ...ty exclusions may apply Contact your dealer or Jeff Rowland Design Group Inc for information regarding our commercial warranty policies GUIDE USE This guide is designed to make installing and using th...

Page 5: ...gain the maximum performance and ease of use for which this amplifier was designed Please note that your MODEL 735 MONOBLOCK AMPLIFIER serial number begins with the letters SD Please include this num...

Page 6: ...TABLE OF CONTENTS Special Design Features 6 Maintenance and Care 8 Unpacking and Placement 9 Initial Inspection 9 Unpacking 9 Front Panel 10 Rear Panel 11 Speci cations 12 PAGE 5...

Page 7: ...dynamic signal conditions HIGH CURRENT COPPER BUS BARS High current dual polarity ultra low impedance copper bus bars distribute both power supply input current and signal output current virtually eli...

Page 8: ...AC power inlet accepts a wide variety of after market high performance power cables FRONT PANEL STANDBY BUTTON Illuminated front panel push button switches the amplifier into standby mode 0 3 watt con...

Page 9: ...6 MONTHS BEFORE ATTEMPTING TO CLEAN IT THIS WILL PREVENT SMALL SCRATCHES FROM MARRING THE SURFACE BEFORE THE SURFACE COATING HAS HAD A CHANCE TO HARDEN COMPLETELY WARNING THE FRONT PANEL OF THE UNIT...

Page 10: ...aler immediately We strongly suggest that you save all of the packing materials If the amplifier is returned to your dealer or Jeff Rowland Design Group the original packing materials must be used for...

Page 11: ...ANEL POWER BUTTON Press this button to operate the ampli er Press again to place the ampli er in Standby mode 2 POWER INDICATOR LAMP This light will illuminate when the ampli er is operational Figure...

Page 12: ...Install the positive usually red loudspeaker cable spade terminal to the positive binding post and the negative usually black spade terminal to the negative binding post Secure the loudspeaker connec...

Page 13: ...t transformer Damping Factor 500 20 Hz 20 kHz Overall Gain Bal or Unbal 26 dB Common Mode Rejection Ratio 90 dB 20 Hz 20 kHz Absolute Phase Non inverting Pin 2 Positive Inputs Balanced XLR Outputs 2 p...

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