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Posts by arnyk

OK, so the AVR ran out of gain because of suboptimal internal trim settings.The above does not describe what a clipping amp sounds like. A clipping amp continues to get louder as you turn up the volume because the average levels increase even though the peaks get chopped.And without actual SPL meter readings, its all a big mystery!
Rapco builds nice snakes in several grades. This looks like their lowest grade which still sounds great. It is a good choice for places that are fixed in place and run only a few shows a week. The devices themselves are pretty self-evident and easy to repair. Why would you need a model number?
That was just 2 small TO220 transistors in parallel.Here's something a little more serious (Behringer EP2500/4000):4 in parallel, and they are monsters:
Measured it with a peak reading/peak holding SPL meter.
Since the evaluation of the consequences of the alleged upgrade was a non level-matched, not time-synched, not quick switched, sighted evaluation IMO it really isn't worth a second thought to explain. He wished for a better sounding system and he got one! Magic! ;-)
There is no generally agreed-upon AVS standard. What you are referring to is someone's guideline. It is not cast in cement. It is not blessed by a priest. The requisite chicken was not slaughtered. ;-)Not exactly. The most important active filtering in the SA3 are the same as those used in the subwoofer side of many AVr's bass management circuits.There is no rule that cascading active and passive crossovers is always a bad thing. It can work out. For example the classic...
Depends what your criteria is. If sound quality is your only criteria then far more likely as not they are all the same.In some cases the cheap ones may measure better than the expensive ones:For example:http://www.soundandvision.com/content/yamaha-rx-v371-av-receiver-ht-labs-measuresVersushttp://www.soundandvision.com/content/yamaha-rx-v475-av-receiver-ht-labs-measuresAt most power levels below 35 watts where most people listen most of the time, the cheaper amp measures...
I've spent a lot of time coming with replies to his questions which are interesting at times, but it can be a little frustrating when I get the "It's deju vu all over again" feeling. For his level of interest he really needs to get serious about audio engineering.
Well, that and the biasing influences that we know for sure were present.
(1) It is highly probable that you knew which AVR you were listening to at all times during the evaluation(2) The levels of the sound produced by all of the AVRs was not matched within 0.1 dB of each other. This takes work and technical expertise that is not exactly common, and even knowing that it is necessary is not well known.(3) You probably didn't control the change-overs between the various AVRs, the switching was not instantaneous, and/or you couldn't compare...
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