General description This output shield is made especially for the MIRAND Audio AK4490 USB Audio DAC, but it can be used for all dacs’s having a voltage output, preferable differential out. The module is completely discrete and all stages runs in Class A. All outputs are Singleended class A equal to the frontend opamp on TSSA V2/V4/V8 control board Key specifications Supply voltage : +/-15VDC DC offset: <20mV dc Single ended and balanced output. Gain from balanced input to output : +6dB Input impedance : 3.24Kohm per diff input Discrete SSR for transparent mute circuit. Size (WxLxH): 71x110x20mm (With molex connector)
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3V96rms from your source
+8db from Iron Pumpkin, which is 2.51V/V
means you have 9V94rms alowable to crank your F1 to full power
original F1 is having gain of 14db, which is tad above 4V/V .......... precisely 5V/V
declared power of 10Wrms@8R is 8V94rms ............ that means - you have plenty of gain at disposal
feel free to start with Iron Pumpkin set to 0db gain ........ amp needs 8V94/(5V/V) = 1V78rms at input, for full blast
3V96rms from your source
+8db from Iron Pumpkin, which is 2.51V/V
means you have 9V94rms alowable to crank your F1 to full power
original F1 is having gain of 14db, which is tad above 4V/V .......... precisely 5V/V
declared power of 10Wrms@8R is 8V94rms ............ that means - you have plenty of gain at disposal
feel free to start with Iron Pumpkin set to 0db gain ........ amp needs 8V94/(5V/V) = 1V78rms at input, for full blast
whichever
just take two close pairs and use them for amp, one pair per channel - positions Q1 and Q2
