Table of Contents 3 Thank You From Sherbourn 4 Safety Precautions 5 5 NEC (National Electrical Code) Standards A Note for the Cable Television (CATV) Installer 5 Antenna Grounding Outside the House 5 Unpacking Your Sherbourn Amplifier 6 7-150 Amplifier Features 7 Front Panel Layout 8 Rear Panel Layout 9 Installation and Connections 9 AC Power Considerations 9 Physical Placement / Heat Considerations 9 Input Connection Considerations 9 Output Connection Considerations 9 Connection
Thank You from Sherbourn Thank you very much for your decision to purchase one of our superb Sherbourn amplifiers. We take enormous pride in the design and build quality of all of our products and we are confident that our product will provide you with many years of enjoyable and trouble free service.
Safety Precautions The following situations require that your 7-150 be serviced only by qualified service personnel; 1. The power-supply cord or the plug has been damaged; or 2. Objects have fallen, or liquid has spilled into the component; or 3. The 7-150 has been exposed to rain; or 4. The 7-150 does not appear to operated normally or exhibits a marked change in performance; or 5. The 7-150 has been dropped, or its enclosure or chassis is damaged.
NEC (National Electrical Code) Standards Unpacking the 7-150 All Sherbourn amplifiers are double boxed to survive the rigors of long distance shipping and arrive to you undamaged. The outer box may show wear and tear, but this is no cause for alarm. The outer box’s purpose is to protect the inner box. If the inner looks heavily damaged, and you are concerned about damage to the amplifier, please call Sherbourn Technical Support at 1-877-366-8324.
7-150 Amplifier Features • Audiophile quality performance and sound • High current power supply • Low noise toroidal power transformer • Advanced microprocessor operating system • Complementary, discrete power amplifier design incorporating high current, high speed, on semiconductor power devices • Channel status indicators for standby, operate, and fault • 12 volt trigger connections • Completely stable into 4 ohm loads • Signal to Noise Ratio is greater than 100dB, unweighted ref. full output • THD .
Front Panel Layout 1. Front Panel Power Switch This switch provides the ON/OFF control of the 7-150 from the front panel. When the unit is off and in standby mode, the switch illuminates amber. Automatic switching is accomplished with the 3.5mm trigger input on the rear panel using a 5-12VDC control signal. 2. Front Panel LED Display The front panel display contains Status LED lighting to indicate the condition of the 7-150.
Rear Panel Layout 6. Remote Trigger Input – The 7-150 can be remotely triggered by another device, and in turn, remotely trigger another device. When a remote trigger output from a preamplifier, processor or other audio device is connected to the trigger input here, the amplifier will power up and shut down along with the first device. Another device (CD player, amplifier, etc) can be added to this chain using the tridder output. This 3.
Installation and Connections Do NOT place a turntable directly above or directly adjacent to the amplifier. AC Power Considerations Before placing the amplifier on a shelf, verify that the weight bearing capacity of the shelf is 80 lbs or greater. The amplifier is heavy and should be placed toward the bottom of an audio rack to minimize the rack being unnecessarily top heavy.
Series and Parallel Speaker Connections or interference heard in the speakers. • Many RCA type patch cords can be a very tight fit and there is usually a preferred method of removing them. Some have to be removed with a twisting action. Be gentle or you may damage the jacks of your amplifier, the cables themselves, or other components.
ohm speakers in series is an eight-ohm load. Series connections are easier on the amplifier than parallel connections as the total impedance is higher than driving a single speaker. nection type that you use loudspeakers of the same type and nominal impedance for these connections. In doing so, you have the most predictable outcome for your installation.
stereo when you were expecting 5.1 surround sound. bass performance. DOUBLE CHECK ALL THE SPEAKER CONNECTIONS!! • Check if any missing channels have been turned off in a preamplifier setup menu. For example, the center amplifier channel will not receive a signal if the preamplifier has been set to “Phantom”. Turn-on and turn-off thumps • Plug the amplifier into an unswitched AC outlet, and use the 3.
NOTE: Never remove the ground pin from any power cords (if present). This is very dangerous. Each RED light indicates a fault condition for the corresponding power module. If the hum persists, disconnect all the source components one at a time from the back of the preamplifier, until you identify the problem.
Technical Features • Fully protected from all fault conditions • Advanced microprocessor operating system • Soft start circuitry • External trigger turn on • Soft touch power switch • 4RU chassis w/ solid milled aluminum faceplate • IEC power inlet, 120/230 VAC configurable Licensing and Trademark Disclosures Sherbourn Disclosure All Rights Reserved. Sherbourn reserves the right to make improvements to its products at any time.
Specifications PA 7-150 Topology: Fully discrete, dual differential, high current, short signal path Class A/B. Number of Channels: 7 Power Output (rated power; THD < 0.4%): 200 watts / channel (x7); all channels driven; into 4 Ohms. 150 watts / channel (x7); all channels driven; into 8 Ohms. Rated Power Bandwidth (at rated power; 8 Ohm load): 20 Hz to 20 kHz + /- 0.05 dB. Minimum Recommended Load Impedance (each channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads per channel).
Power Supply: 850 VA toroidal power transformer. 90,000 uF of storage capacitance. Input sensitivity (for rated power; 8 Ohm load): 1.110 V Gain: 32 dB Input Connections: Unbalanced (Tiffany style, audiophile quality, gold plated RCA); one per channel. Balanced (XLR); one per channel. Each input may be independently switched to either unbalanced or balanced. Input Impedance: 23.5 kohms (unbalanced). 33 kohms (balanced).
Sherbourn Technologies, LLC Ten-Year Limited Warranty What does this warranty cover? Sherbourn Technologies, LLC (“Sherbourn”) warrants its products against defects in materials and workmanship. This warranty is subject to revision at any time.
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY. How do you get service? In order to make a claim under the warranty, you must: 1. Call a customer service representative (“CSR”) of Sherbourn at (1-877-366-8324). Provide the CSR with a description of your problem and the serial number of the product for which the warranty claim is being made. 2.
