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@ camp badger: i'm a speaker nutter so I am really willing to do some research myself, would be pretty interesting and quite an experience I think.
About the distortion: it's not the plasma, it is you amplifier or preamp. These are problems caused by the input source. Some sources put out more electrical power than others. There are also different types of audio cables, special types with grounding etc. Point is that it is not the speaker :)
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
2many wrote ...
@ camp badger: i'm a speaker nutter so I am really willing to do some research myself, would be pretty interesting and quite an experience I think.
About the distortion: it's not the plasma, it is you amplifier or preamp. These are problems caused by the input source. Some sources put out more electrical power than others. There are also different types of audio cables, special types with grounding etc. Point is that it is not the speaker :)
It is really interesting, I save all my links so PM me if you want them (there are a lot)
I'm not sure that is entirely true... My blackberry Curve has a very cheap amplifier and works better than the $1,200 Technics my dad bought?
@ camp badger: i'm a speaker nutter so I am really willing to do some research myself, would be pretty interesting and quite an experience I think.
About the distortion: it's not the plasma, it is you amplifier or preamp. These are problems caused by the input source. Some sources put out more electrical power than others. There are also different types of audio cables, special types with grounding etc. Point is that it is not the speaker :)
It is really interesting, I save all my links so PM me if you want them (there are a lot)
I'm not sure that is entirely true... My blackberry Curve has a very cheap amplifier and works better than the $1,200 Technics my dad bought?
no no, it is not called an amplifier but a preamplifier (and I even think that is the wrong term to use). Anyway, in hifi equipment and especially older gear like Technics need a high quality preamplifier to raise the signal, to make it ready for the real amplification. So to speak.
The reason why you don't need this with most modern amplifiers is because the preamp is built into the amplifier itself.
The preamplifier also contains a bunch of chips to get rid of the nasty distortion etc from different sources. I had the same problem with a 12v amp I used. Works perfectly with most ipods, but the smallest ipod gives distortion and noise. Also my macbook pro gives very nasty noise! But when I hook ik up to my external sound card it sounds perfect.. But yeah that 12v amp also doesn't have dedicated preamp and if I want to solve the problem I have to design one..
Some of what I said isn't exactly true, but it's about right. All i want to say is that the distortion is not coming from the speaker. It has always to do with the signal. So I suggest you do some research on proper source/input/preamp stuff.. That will fix your problem 100% guaranteed.
Registered Member #2614
Joined: Sat Jan 09 2010, 08:57AM
Location: Bucharest, Romania
Posts: 26
If you're using a 555 timer to handle an audio signal it's obvious it will suck. Take an existing and proven class D audio design, apply its output to a HV AC transformer, done.
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
I have a quick question, does anyone know what the lowest, clean, frequency range for a plasma speaker is? I was thinking it's somewhere around 10,000 hertz
If you're using a 555 timer to handle an audio signal it's obvious it will suck. Take an existing and proven class D audio design, apply its output to a HV AC transformer, done.
cool I have a few class D amps lying at home. Would a sure 2x100w TK2050 would be enough to do the job?
nah I think plasma can play at least 2500hz... probably a bit lower
Registered Member #3637
Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Yes, because it has to do with the way class D amplifiers really work. With a 555 timer, it's just pwm the audio into a square wave... with a true class D amplifier, it requires a high frequency triangle or sawtooth wave, and compares it to the audio, giving out a square wave PWM'ed according to the peaks of the carrier wave (triangle or sawtooth)
Apparently, this makes it sound much better than just a 555 timer.
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Plasma Audio Thread
