![]() ![]() ![]() I have repaired subs using stereo modules configured in bridge mono mode, and performance/price work quite well.Īlthough I have not tried the experiment ( I have 2 STK4048mk2 modules in stock to try out one day) I expect/suspect with good layout, good power supply and good input drive stage they ought to perform rather well.Īnother approach is to use STK DRIVER modules driving seperate output transistors for higher power and/or lower impedence loads. ![]() Typical applications use an under rated transformer to give high transient ability, and power rails that sag somewhat according to output, thus giving a level of protection to the module in domestic audio gear.Īdequate heatsinking is important, fan cooling even better, or place the heatsink in the air path of the tuning port tube. STK modules are pretty much standard equipment in a lot of mid-fi audio gear. Some have handy features such as muting and limiting also. (I get to repair plenty of such amps that have failed because youngsters have connected a extra pair of cabinets !.)įor economy, repeatability, servicability, availability and ease of implementation they are probably hard to beat. The specs are good but the modern high power models are not rugged - ie they are usually rated for 8 ohm load only, and if running full rated supply rails, a 4 ohm load will likely kill them. Modern STK amplifier modules are indeed quite good. ![]()
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