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

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But that being said - the PSU works well, no hum or buzz when in use, so my Fly 3 has become even more flexible. In this case it comes out of the power amp Ground connection on the Speaker Board and back to IC9 and beyond. 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.

We use cookies to analyse site usage, provide social media features and personalise content and ads. These filters have a cutoff frequency (see the calculator link I put earlier) of 33Hz or 334Hz depending which RC pair you look at. D2 and D3 are those crazy serial diode pairs again, so they actually act more like a "super-diode" (I just made that term up). Powering our booster directly from batteries would drain them even when the amp is not turned on, so we want to make sure to get the point in the circuit that’s downstream from the power switch. The whole amp case interior measures 160mm x 115mm x 80mm minus the space the battery compartment takes ( 100mm x 65mm x 20mm) gives an air volume of 0.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.

Note where the + and – terminal are on the speaker and where the corresponding solder pads are on the daughter board.

Anyone who has had a ground loop with their pedals or their mixing desk knows what I'm talking about. The 3″ full-range speaker is good enough for listening to music, but I’d like it to have more punch and clarity with guitar. If you purchase our extended warranty for this product, we'll extend the money-back guarantee period to 180 days and the warranty period to 10 years. When I put my amp back together so it works (hopefully), I'll probe some voltages to see if this is the case. The power supply is a mostly conventional design with the power coming through FS1, a board mounted protection fuse (sorry don't know what rating it is, and I don't want to blow it to find out :) ), a " Power" switch (mounted on the Upper Deck Board), and into IC9 after a couple of filtering caps C79 and C40.