Description: Here's an empty transformer box for use with your Bogen TM-200 transformers. This lets the transformers be used to step up moving coil phono cartridges to standard MM levels. The Bogen TM-200 transformers have a step up ratio switchable between 1:15 and 1:30. The actual amount of gain you get will depend on the output impedance of your cartridge. These can typically be used with cartridges with output between about 0.2 and 0.4mV and less than 30 ohms internal impedance. They'll load the cartridge with 200 ohms on the low gain setting or 50 ohms on high gain. The box also has a 3 position chassis ground select switch to help you get the lowest noise possible. In the center position, the two audio channel grounds and the chassis ground are all isolated from each other, so you can add a separate ground wire between the transformer box and your preamp ground post without creating a ground loop. The switch can also join the box to one (the left) or both of the audio grounds so you don't have to run a wire. In general you don't have to worry to much about what the switch is doing, just hook up the box in a way that's convenient, and find the position on the switch that gives you the lowest hum.
Price: 139 USD
Location: Salt Lake City, Utah
End Time: 2024-08-31T16:25:55.000Z
Shipping Cost: N/A USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
