Hi friends,

I want to build a UCD with the following specs:

freq=250kHz.

s/woofer = JBL CS1215, 4 ohms, 275W max.

req amp power = 200W.

Unfortunately, i have no access to an oscillioscope . and would like to get help on the following:

1) How to calculate values L, C for output filter?

2) Is a gain of 56 problematic?

3) How to provide the GD power supply with good peak-current capability?

4) How to work out values for the resistors around the level-shift transistor?

Schematic attached.

Thanks in advance.

I want to build a UCD with the following specs:

freq=250kHz.

s/woofer = JBL CS1215, 4 ohms, 275W max.

req amp power = 200W.

Unfortunately, i have no access to an oscillioscope . and would like to get help on the following:

1) How to calculate values L, C for output filter?

2) Is a gain of 56 problematic?

3) How to provide the GD power supply with good peak-current capability?

4) How to work out values for the resistors around the level-shift transistor?

Schematic attached.

Thanks in advance.