User manual JEFF ROWLAND MODEL 8

[. . . ] User-selectable absolute phase on balanced input User-selectable input muting User-selectable switching between balanced and unbalanced inputs Front panel standby/power button illumination can be turned off during listening Optional remote (wired or wireless) power ON/OFF switching Automatic temperature stabilizing circuitry maintains constant operating temperature Standby power condition reduces warm-up time Fail-safe operation provided by user-resetable AC and DC magnetic circuit breakers located on rear panel Quiet, transient-free operation during power and function mode switching Automatic input muting under anomalous input or output operating conditions Balanced Differential ModeTM circuit topology implemented from input to output Plug-in modules, containing critical electronic circuitry, enhance thermal stability, mechanical integrity and serviceability Low-resonance, structurally integrated chassis of precision machined aluminum alloy components Introduction / Product Features Contents 1 5 4 2 3 Initial Inspection Inspect the shipping container for damage. If the shipping container, packing material, amplifier or accessories are damaged or missing, notify your dealer and the shipper (if a claim is to be made). Note: Many shippers require notification and an inspection within twenty-four (24) hours of delivery to ascertain the nature of damages incurred. Your Model 8T/Ti Amplifier has undergone extensive performance evaluations, listening tests, quality control inspections and a minimum seventy-two (72) hour burn-in period prior to shipment and should be in a perfect operational condition upon receipt. If the Amplifier does not operate correctly, please notify your dealer immediately. [. . . ] Supplied with your Model 8T/Ti Amplifier are two different support systems. An assessment of the supporting structure should be made to determine the proper system for the Amplifier. Both spiked and compliant interface supports can be easily installed within the indentations on each of the four chassis pods located underneath the corners of the chassis. These system options permit the coupling or decoupling of the Amplifier chassis to the supporting structure. As a general rule, most installations allow the Amplifier chassis to be rigidly coupled to the supporting structure via the spiked coupling interface supports. In carpeted installations, these supports provide excellent coupling from the Amplifier chassis to the rigid supporting structure below. In installations where the integrity of the supporting structure is poor, the Amplifier chassis can be loosely coupled to the supporting structure via the compliant isolation interface supports. This will help attenuate the transfer of spurious energy from the supporting structure into the Amplifier chassis. Note: Another installation option, when incorporating the Battery Power Supply, utilizes its chassis as a stable, high mass structural support for the Amplifier chassis. In this configuration, the Battery Power Supply chassis is rigidly coupled to the supporting structure via the spiked coupling interface supports and the Amplifier is placed directly above the Battery Power Supply and isolated via the compliant isolation interface supports. If desired, a coin may be placed directly under the point of the spiked coupling support to prevent damage to various surfaces (i. e. hardwood floors). Rear Panel Power Connections Important: Please strictly follow the steps in order as outlined below before operating your Model 8T/Ti Amplifier. 1 Verify that the AC MAINS CIRCUIT BREAKER and both RIGHT and LEFT CHANNEL CIRCUIT BREAKERS are in the ON position (green color visible). Verify that the VOLTS AC INPUT identified on the rear panel corresponds to the AC mains voltage of your service area. Install the AC power cable between the Amplifier and an active AC mains outlet. Do not remove unless used with the optional BPS-8 Battery Power Supply. If removing, always use the knurled ring to loosen and remove these jumpers and covers as one unit. 2 3 4 Note: If the Amplifier is moved to another location, simply disconnect the AC power cable from the AC mains wall outlet. It is not recommended to use the AC MAINS CIRCUIT BREAKER to remove or connect AC mains power to the Amplifier. Installation / Rear Panel Power Connections Signal Connections 3 2 1 5 4 4 Signal Connections The Model 8T/Ti Amplifier offers unprecedented compatibility with associated audio components. When connecting or disconnecting speaker or interconnect cables, it is only necessary that the INPUT MUTE switch be in the ON position if the Amplifier is already in operational mode. 1 Remote 5 Position INPUT SELECT switch to XLR if you are using XLR balanced interconnects or to RCA if you are using RCA unbalanced interconnects from your preamplifier or other source component. Select one input -- either BALANCED XLR INPUTS or UNBALANCED RCA INPUTS -- on each channel to match your interconnect cable used. A slight click may be heard when the XLR interconnect plugs are installed correctly and latched. The latch (located on the input connector and labeled PUSH) must be pressed to remove the XLR interconnect cable. Unscrew one set of the PARALLEL OUTPUTS connectors on each channel and install the positive and negative loudspeaker cable spade terminals to the respective Amplifier PARALLEL OUTPUTS. [. . . ] Add subwoofer loudspeaker system to relieve load on main system. Intermittent short-circuit on Amplifier PARALLEL OUTPUTS. RIGHT AND/OR LEFT CHANNEL CIRCUIT BREAKER cannot be switched on (when loudspeakers are not connected). AC MAINS CIRCUIT BREAKER (rear panel) switches off or will not remain on. Abnormal operation of Model 8T/Ti Amplifier internal circuitry. Check loudspeaker cable and associated connections. [. . . ]