what should be input capacitor C1 for the ESP P68 ?
The artlicle says :
"The input is via a 4.7uF bipolar cap, as this provides lots of capacitance in a small size. Because of the impedance, little or no degradation of sound will be apparent. A polyester cap may be used if you prefer - 1uF with the nominal 22k input impedance will give a -3dB frequency of 7.2Hz, which is quite low enough for any sub."
And if you observe clearly C1 on elliott`s pcb, it seems to be a small electrolytic.
The artlicle says :
"The input is via a 4.7uF bipolar cap, as this provides lots of capacitance in a small size. Because of the impedance, little or no degradation of sound will be apparent. A polyester cap may be used if you prefer - 1uF with the nominal 22k input impedance will give a -3dB frequency of 7.2Hz, which is quite low enough for any sub."
And if you observe clearly C1 on elliott`s pcb, it seems to be a small electrolytic.
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Hi,
1uF & 22k would be ok for a normal wideband speaker that has started to roll off from 50Hz to 60Hz.
For a sub amp you should be aiming for at least an octave or preferably two octaves lower.
I recomend you try 4u7F or even 6u8F with 22k. Otherwise you will be crippling the sub bass unit you are trying.
1uF & 22k would be ok for a normal wideband speaker that has started to roll off from 50Hz to 60Hz.
For a sub amp you should be aiming for at least an octave or preferably two octaves lower.
I recomend you try 4u7F or even 6u8F with 22k. Otherwise you will be crippling the sub bass unit you are trying.
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