Behringer A500 Amplifier Test PART 1

Shows significant harmonic distortion seen while turning the gain control through 60-70%. The amplifer's input gain stage is badly designed, according to our tests. It's ok at full power but do not trust any setting other than full. This means you must use the preceding system to control gain. Second part video shows other defective Behringer gear. We discoverd this "by ear" its so noticeable when we fed 1khz set up tone from the O2R96 when commissioning three brand new amplifiers. Tests not shown here at full power on 6 channels (three amps) yield ok distortion results into Tannmoy DMT15 Mk 2s

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[Albion Alloys]

Why is he dressed like a bomb disposal expert? maybe he thinks there is an IED round the back of his Matsui graphic equalizer.

[ebaystars]

hahahahaha you guessed it I do repairs on military kit in my spare time,!!! Yeah there was a IED in the Behringer Power supply (chinese capacitors) !!! bang puff !!! sizzle.... LOL!!!!

[syncmaster710n14]

What I don't get is you have all this really expensive gear and you buy these cheep entry level amps. I mean you can't not blame them, there cheap, they have been designed to a budget for beginners.

[ebaystars]

yes , we gave them a try out to be fair we wanted to prove it could be done, but sadly we had a bad result, then we got some Karma from being rude to Behringer, we boufght a tope end yamaha PA amp and its DC protection on output circuit failed and one new Tannoy DMT15/2 went pop and smoke came out of the cabinet ports!! So, I have now remarried, gone to Thailand, chilled a bit, sold my army surplus business and will keep these videos on for entertainment..

[wae5]

So this amp doesnt meet specs when its volume controls are NOT turned all the way up. So what? If you have a separate amp, its volume is controlled by a preamplifier. The Behringer controls are not meant to be used like normal volume controls because they will wear out if used too much. The proper way to use this amp is to turn its volume controls all the way up and use an active or passive pre amp to control its volume. Used this way, it sounds fine and is an excellent bargain.

[Darian Cabot]

Wow, that escalated quickly! :-P

Thanks for the interesting videos.

[marcos Koprowski]

E isso trocando os capacitores resolveria? obrigado

[envisionelec]

This measurement has nothing to do with the position of the gain (volume..) control, but everything with the amplitude. This is crossover distortion - you can look at theaudiocritic. Up to about 1W, you have over 0.35% THD with mainly second order distortion. They point to it as "noise", but it's not - it's typical bad design.

[Fredmullegun]

I have one of these bridged into a single 8 ohm load. You are saying I will get better sound if I turn the right volume down all the way, the left volume knob up all the way and then control the gain with previous device in my system? Thanks!

[pentremansion]

he is a bomb disposal expert

[ebaystars]

@myukvisa My power distribution units (blue) are from GCHQ scrap U R nearly right!!!!!

[2009thread1]

is this amp not good then ?

[raidfire]

Thank You you just saved me making a big mistake! Anything in this price range that you would recommend? Can go up a few quid if needed to drive my old faithful JBL's 175W @ 8 Ohm....