Question about Yamaha YST-SW205 Subwoofer
Posted by Anonymous on
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Posted on Jan 02, 2017
As far as I can tell, this unit does not have a breaker or anything that would "trip" and be reset by powering off and on. It does have a fuse, which can blow (I replaced mine once) but if the fuse blows, you'll get no power until the fuse is replaced. Spidi, is your computer connected to your subwoofer's line 1 in connection or line 2 in connection? If line 2, that would explain the problem because the auto-off circuit only monitors line 1 in. If there is no signal on the line 1 input, it will power off every 15 minutes. If you are connected via line 1 in, the subwoofer should stay on as long as the volume is fairly loud. That's my problem. At low volume levels, the unit will auto-off even though I'm hearing plenty of bass through the sub. Drives me nuts, but I haven't found a way to disable the auto-off feature. Schematics anyone?
Posted on Nov 07, 2007
You can connect the Yamaha YST MS50 speakers to any audio source that relies on a 3.5mm jack. The YST MS50 should have two audio inputs, so you can use one of them to connect the speakers to your computer. If you don't have a 3.5mm male to male cable, then you can buy that at any electronics store or online.
Posted on May 14, 2009
The speakers just plug into the sound port on the back of the computer. I never found a need to download any drivers for the YST-M15s that I have. You may not either. Why do you think you need drivers?
Posted on Feb 15, 2010
This problem can be solved by either of the following:
1/ Modify the PCBA to prevent the auto shut off feature from working. This is done by adding a 20k ohm resistor across pins 1 & 2 on the timer IC6. This resistor will prevent the timer from turning off the amp. To do this, unplug the amp. Remove the 8 screws on the perimeter of the rear of the amp. Carefully remove the rear plate. Disconnect the speaker wires at the speaker and the front panel connection on the main board. Locate IC6 on the bottom of the main board. Solder a 20k ohm resistor (1/4W) across pins 1 & 2. Pin 1 and Pin 8 are noted on the board. Be sure to insulate the leads of the resistor to prevent contact with the board. See picture. Re-assemble in reverse order.
2/ Some 5.1 channel amps allow independent control of the volume for the subwoofer in their setup. Check your amp to see if you can raise the signal level going to the subwoofer to prevent the amp from shutting off. You can then dial back the volume of the subwoofer using the volume control on the front.
Posted on Jan 08, 2011
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