diff --git a/boards/Digilent DE0/README.md b/boards/Digilent DE0/README.md
index 52c6360..6a01064 100644
--- a/boards/Digilent DE0/README.md	
+++ b/boards/Digilent DE0/README.md	
@@ -2,17 +2,17 @@
 
 * Altera EP3C16F484C6 FPGA
 
-The DAC output is the UART_TX pin. It _really_ needs a 5kHz lowpass filter, otherwise you'll be deafened/greeted by a very loud 10kHz PWM carrier. Try a 330 ohm series resistor, followed by a 100nF capacitor to ground:
+The DAC output is the UART_TX pin. It _really_ needs a 5kHz lowpass filter, otherwise you'll be deafened/greeted by a very loud 10kHz PWM carrier. Try two sections of a 1K ohm series resistor, followed by a 100nF capacitor to ground:
 
 ```
 
 
-UART_TX pin ----RRRRR---------o OUTPUT
-                           |
-                           C
-                           C
-                           C
-                           |
-                          GND
+UART_TX pin ----RRRRR--------RRRRR---------o OUTPUT
+                        |             |
+                        C             C
+                        C             C
+                        C             C
+                        |             |
+                       GND           GND
 
 ```
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