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Old 30th September 2012, 09:54 AM   #1
amptech is offline amptech  Scotland
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Default Qtx powered speakers...

This unit came in with a cutting out fault!

After strip the unit down and looking at the amp stage I found poor soldering on the out transistors plus the bias transistor was not even bloted to the main heat sink. So after refitting the unit back together it was time for a power out put test... This unit is meant to be 350rms at best it was out putting 98w at 8 ohms and 4 ohm just over 150w before the clip led came on!

So how is it they are rated at 350rms!
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Old 1st October 2012, 12:55 PM   #2
amptech is offline amptech  Scotland
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Also to add regarding this qtx unit the supply voltages are p/n 38v.....plus to get 300w or more the ht voltages should be highter...
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