Blackstar Fly 3 PSU Official Power Supply for Fly 3 Mini Portable Amplifier.

Product Information

R10 being just a few kohms. These speakers have different sounds for all sorts of reasons, but one of the main ones is that the construction and electrical characteristics mean certain frequencies peak or dip. However, a much nicer sound can be achieved if you use a larger and more pleasant center and sensitive speaker. A” is the circuit ground, “B” is input jack’s tip connection, “C” is the input leg of the input capacitor and is connected to “B” and finally, “D” is the power connection after the power switch.

The Main Board in the Fly3 has plenty opportunities for tweaking component values in all those filters to get more bass, more mids, more anything. I wanted to expand tonal range of the little Fly 3 and add more gain for high gain tones and to improve definition when playing rock or metal riffs. Imagine you now have another piece of gear (amp, mixer, pedalboard etc) which also has its Ground (0v) connected to earth through its mains power supply. C3 provides some low pass filtering on this gain stage and is perhaps there to roll-off the upper harmonics from any clipping (remember clipping creates lots of new harmonics).

Of course there is a resistor really - its the resistance of the copper PCB trace, So this supply has an RC filter too. Even though blackstar fly products will run on batteries, the many AA batteries required to power the unit do not last long with constant use. e. battery negative) via two cores of the ribbon to the main board (see discussion and Rear Board schematic way back here). Fly 3, like most of other “warm digital delay” circuits uses PT2399 delay chip that is imperfect to begin with. It holds the pots and switches which are to the back of the Blackstar Fly3 control panel (looking from the front if that makes sense ?

If you’re not taking your Blackstar Fly 3 battery-powered mini guitar combo amplifier out and about, then save on batteries by using a Fly amp power supply. Big kudos and thanks to my Sweetwater sales engineer Caleb, who always comes through with helpful answers to my questions. Something Blackstar designers have definitely taken some care about is how Ground has been routed and connected on the board. It has a pronounced mid scoop that prevents it from sounding boxy, noticeable low end boost around 200Hz and it has the most clarity in the high end. Blackstar also took care of where they connected the circuit parts with high current to the Ground plane.Adding a resistor in series with the supply causes a DC voltage drop (Herr Ohm tells us voltage = current x resistance). With a Strat I can get nice SRV type of sound and classic distorted rock sounds with Gain control maxed. There's a bunch of maths (sorry math if you are in the USA) which speaker designers use to make ports in their cabinets resonate at the frequency they want.