Question about Sherwood Am Fm Stereo Receiver Rx-4103 2 Channel 210 Watt Amp With Remote
Posted by Anonymous on
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Posted on Jan 02, 2017
You can also use 2SD2560 and 2SB1647 130watt 150volt 15amp transistor, but it may require some rebiasing the on output transistors. Sherwood have used these transistors in their older model receivers. I just replaced those transistors in my Sherwood RX-4105 Receiver, and they work good as well.
Before I install those transistor. I did a out of circuit 20volt 4amp DC current test to a 4ohm resistor @ 200watt load to compare 2SD2560 / 2SB1647 to the B2510/B1510 mounting them on 5 square inch, 1/8" thick piece of Aluminum, and the results of the test, the 2SD2560 / 2SB1647 heats up in 60 seconds to around 120 degrees F, and the B2510 and D1510 heats up in 30 seconds to around 120 degrees F.
Posted on May 04, 2009
always press the mode key of the device they want to control before pressing any other key
Power on the device
All the Mode keys should flash twice.
Posted on Sep 20, 2009
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Unlike the budget stereo receivers now flooding the entry-level price points at dealers across the country, the Sherwood RX-4109 is designed and built in-house with the same quality and attention to detail we have been bringing to our audio gear for the last 50 years.
With 105 Watts RMS per channel, phono section, binding posts, a versatile remote control and switching for two pairs of loudspeakers, the only thing that bespeaks the word "budget" about the RX-4109 is its modest cost.
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