EQP5 alternate frequencies

Note: Mods are not supported! Once you start modding, we cannot offer troubleshooting support. Make sure your unit is working in the stock configuration before adding any mods.

All the frequency bands on the EQP5 Passive EQ can be customized by changing the capacitor value.

LF- Frequencies

Change these caps:

C20 for switch in
C21 for switch out

Frequency	Cap Value
10Hz	150nF
20Hz	82nF
30Hz	39nF
40Hz	27nF
60Hz	18nF
90Hz	10nF
120Hz	8.2nF
150Hz	6.8nF

LF+ Frequencies

Change these caps:

C22 for switch out
C23 for switch in

*Note that in the LF+ band, C24 is already populated with a 150nF cap which adds 150nF to both C22 and C23. For starred frequencies, 10Hz and 20Hz, C24 needs to be removed.

Frequency	Cap Value
10Hz	4.4uF (2.2u + 2.2u)*
20Hz	2.2uF*
30Hz	820n
40Hz	560n
60Hz	390n
90Hz	150n
120Hz	82n
150Hz	None (only the 150nF from C24)

HF- Frequencies

Change these caps:

C18/C19 for switch out
C17/C17b for switch in

C18 and C19 are in parallel to achieve 136nF (which is not a regular cap value) for the stock 10kHz frequency. So to customize the "switch out" frequency, remove C19 and change C18 to the value from the chart below.

C17b is just an extra socket in parallel with C17, in case you want to choose an eccentric frequency or set the "switch in" frequency to 10kHz.

Frequency	Cap Value
3kHz	330nF
5kHz	220nF
8kHz	150nF
10kHz	136nF (68n + 68n)
12kHz	120nF
15kHz	100nF
18kHz	82nF
20kHz	68nF

HF+ Frequencies

Change these caps:

C16/C16b for switch in
C15/C15b for switch out

C15b and C16b are extra parallel sockets for C15/C16 for achieving non-standard cap values. For example, if you wanted to make the "switch in" frequency 10kHz, you would place 5nF and 390pF in C16/C16b (doesn't matter which goes where) for a total capacitance of 5.4nF.

Frequency	Cap Value
8kHz	8.2nF
10kHz	5.4nF (5n + 390p)
12kHz	3.9nF (3.3n + 560p)
16kHz	2.2n
20kHz	1.4nF (1n + 390p)