The next four components make up the heart of the models: Preamp, Tone Stack, Power Amp and Transformer. For users who might want to emulate their favorite tone down to their preferred settings on the real thing, this might require a little extra work, but once those settings are found, they can be saved with the amp as a user preset. But there’s a graphics panel that lets the user customize the appearance of each amp model, specifying just about every detail from the appearance of the tolex (amp covering) and grille cloth to the knobs and panel itself.īias Amp 2 maintains the same full set of knobs for all amps, unlike some amp sims that tailor the layout to the specific amp being emulated. The first component-Custom Panel-is the display of the virtual amp’s control panel, where the player would make tone and distortion settings just as with a real amp. This detail extends even to the amp graphics.
![bias amp 2 not working bias amp 2 not working](https://sanet.pics/storage-4/0518/19GZ4uYyiGSMXUs0ItDM8HuqSMvld5bf.jpg)
This is where you’ll find a level of tweakability that distinguishes this amp sim from most others. The component chain and editing panel are, naturally, the heart of Bias Amp 2. At the very bottom are basic input and output level calibration adjustments-as distinct from the Gain and Master level knobs in the amp sims, which affect the tone and distortion-along with a Noise Gate and Reverb (room simulator). The order of the actual components is fixed, as it would be in an real amp, with the exception of two floating utility EQs. Selecting one calls it up in the edit panel below and this is where the various customizations and design tweaks are made. Just below that is a signal chain graphic, showing all the editable components of each amp. At the very top are menus for selecting amp presets (both factory and user), saving edited/customized versions, and other settings. The Interfaceīias Amp 2 presents the user with a front panel consisting of several distinct sections. So let’s take a more detailed look at some of the features that Bias Amp 2 brings to the table. And Elite adds a set of classic Celestion cabinets. Professional includes more amps and cabs than Standard-there’s a handy comparison chart on the Positive Grid website-along with the Amp Match and IR Loader features (see below). It comes in three versions: Standard, Professional, and Elite. Is this behaviour normal? What can I do to solve this problem? My old Adcom 585 seems to be more stable, even with its triple-darlington output stages and +/- 80V supply.Bias Amp 2 is available both as a standalone application and in all the usual plug-in formats. I’ve a class-B amplifier during the day, and class-AB in the night, when the voltage from the main is the fully 220V! I’ve noticed that the bias strongly depends also from the power supply, with variations (according with the main) of 2-3 volts per rail the current rise up to double, and the amplifier get into thermal runaway. The differences between the 4 finals also increase with high bias. I’ve measured the voltage across the output resistors, and it was originally set at about 4 mv: it means a bias current less than 20 mA per final, so I tried to increase it, but the thermal stability became very critical. the value of emitter resistors of finals is 0.22R the VBE multiplier seems to be made by two TO-126 BJT, one mounted directly on one output transistor (P), and the other on the heatsink of the opposite bank (N) the output stage is a simple darlington with mje 15030/31 drivers and 8 MJL1302A/MJ元281A (4 per rail) mounted on two separate heatsink (P-N) no resistor between the emitter of the drivers and output TR base. the VAS.I’m not sure, but I’ve read something about common-base configuration, it sounds unusual, and a little strange the input stage is a double-differential, fet amplifier, peraphs with cascode load I’ve not the schematic, but from a “visive” inspection I know that:
![bias amp 2 not working bias amp 2 not working](https://media.sweetwater.com/images/items/750/BIASAmp2Pro-large.jpg)
The power (measured) is about 110W/8R, and increases up to 340W/2R. I’ve recently purchased two mono’s amplifier of an italian manufacturer (North Star Design Monoblock).