Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Honey Amp => Topic started by: RookieRecurve on July 31, 2024, 03:48:46 PM

Title: Gain Boost Question Pin 1-8
Post by: RookieRecurve on July 31, 2024, 03:48:46 PM
I haven't finished my amp yet, but the option of having a gain boost sounds fun.  I discovered that the gain can be adjusted by adding a resistor in series with the 10uF capacitor.  In this case, a 1.2K resistor in series, will result is approximately 50x gain (as opposed to the 200x with no resistor).  I am confused however about what to do with pin 7?  In this schematic, it shows that pin 7 has a capacitor labelled as "bypass", and the lines are broken.  Can anyone please shed light on this?  I think I will do this mod, and make it switchable to have the option of a gain-boost.Gain 50.png
Title: Re: Gain Boost Question Pin 1-8
Post by: phatt on July 31, 2024, 11:21:29 PM
Yes 10uF to Ground is fine.
Just google "Smokey Amp Schematic" will give you many schematics using LM386.
Have fun with it.
Phil.
Title: Re: Gain Boost Question Pin 1-8
Post by: joecool85 on August 14, 2024, 02:22:40 PM
Pin 7 is unused on the Honey Amp.  Most times it is completely unnecessary unless you have a really dirty power supply.  I haven't had any issues with any of my prototype of production honey amps not using pin 7.
Title: Re: Gain Boost Question Pin 1-8
Post by: RookieRecurve on August 16, 2024, 03:33:36 AM
Thanks Raymond.  After getting mine up and running, it is very quiet, so the filter cap on pin 7 is definitely not required in my case.  I will hopefully get the 50x gain boost connected to a switch soon enough to see what that is like.