Powered speakers show audiophiles are confused

@ricevs , could you use a 3d printer to make smallish cabinets like a spherical type for speaker builds?

Actually speaker design is simple.....there are not that many factors and you can learn them all in a few hours and apply them with a digital xover and digital amps.

No, not even close, though open baffle, just one type of speaker, which may have good or terrible in room results, is easier, but even for open baffle, there are subtleties to achieve the best design.

 

There are tons of speakers that cross over a tweeter below 1K......yes, indeed. However, the problem is usually power handling.....and with steeper 48db per octave xover slopes it is no longer a problem.

 

There are few dynamic tweeters that are crossed over <1K. Horn loaded yes. AMT no. It is not a simple matter of power handling. It is a matter of dispersion, i.e. the tweeter will be too wide at those frequencies, even 27-30mm dynamic, compared to the woofer, and it is a matter of high frequency off axis energy. The larger tweeter may be flat on axis from 1K-20K, but the off axis energy drops more at higher frequencies on the larger tweeter, changing the tonal balance, and you can’t correct that with DSP without breaking on-axis response. For older people it may not matter as much. It seems that you can’t learn everything in a few hours.

 

Andrew probably spent a couple of hours designing it and tweaking it. Of course, he got in different proto versions of the driver and spent time with each one....but the xover design is simple and normal.....He can probably do the calculations for the parts in his head....he has done it so long. He spent no time listening to those xover parts versus more expensive more transparent one.

He probably did it using his own custom software which he has probably spent decades tuning, however, you can bet from there, he probably made several variants and listened in a few listening spaces to get a feel for how it behaved real world. He didn’t spend time listening to expensive parts for a reason, he already knew what they would sound like.

 

Simply hooking up a digital xover to digital amps and then to drivers not only provides ALL the benefits of normal active speakers but it gets rid of the distorting DACS, one dollar op amps on the output of the DACS and normal class D or A/B amps with all their parts and circuitry and feedback. A digital amp has NO....I repeat NO ordinary amplification stages, DACs or feedback......Usually, the shorter the signal path the more pure the result.

1. It does not provide all the benefits, not even close. Please see your first paragraph, which I will point out, is incorrect as you appear to have spent more than a few hours and still have much to learn.
2. A $10 DAC chip with those $1.00 op-amps implemented on a PCB has no distortion that you can hear.
3. Feedback done correctly is a good thing. There just has to be enough of it. This is simple math.
4. The Peachtree amplifier is a DAC. A regular DAC requires very stable power rails, low noise clocks, and effective analog filters. Stable power rails, low noise clocks, and effective filters with no frequency effects are not difficult at the power level of a DAC (10’s-100’s of mW). Now replicate that at 200W per channel with no feedback to correct issue.
5. Those package DACs are based on multi-bit modulators, which provides significantly improved performance. The Peachtree will not be.
6. The Peachtree filter is outside the feedback loop. It will have roll-off at high frequency.

 

Peachtree has not released any specifications, but I would not be surprised if their performance is lower than class leading D such as Purifi and/or Purifi plus an external DAC. Time will tell. I am sure Stereophile or Audioscience Review will publish measurements when they can. You can already buy Purifi modules inexpensively and multi-channel DACs inexpensively. This is a refinement, not a revolution.

 

Besides being purer sounding than a normal active system.....digital amplification allows you to tune the speaker any way you like, including get rid of bass nodes and extend the bass.

You are only making a claim of purer. Pure is in the results, and we don’t have any to compare. We already are at a state of transparent DAC+amplifier. Anything purer is academic. We can already tune a speaker any way we like, We can also already even with a passive speaker extend bass. Bass nodes has nothing to do with the speaker. That is a room issue. DSP room correction which can be external to the speaker or internal can already be done. Your streaming S/W can do it. There is no advancement being made.

Dipole speakers may give a bigger sound or they may gives you a dark sound. They may help with some room nodes, while creating all kinds of other frequency response issues. They rarely give deep bass without a sub. The sweet spot tends to be small. The off axis energy is usually low, suiting them more for near-field or quasi near-field and can be a pain to room correct for frequency response as it is harder to balance on axis response and room response. There are a reason some love Magnepan and others hate them and that professionals who do mixing and mastering do not use them. Their popularity comes and goes. If your room is not symmetric, forget about open baffle. It will be a mess.

Now, I understand.....thespeakerdude is an objectivist......he believes in measurements only......that is why he thinkis that DACs and op amps and normal amps are transparent.......sorry. even one resistor is not transparent......we live in different worlds.  I listen to "everything" I do......What do you listen to?  measurements?  I give minimal response to objectivists (won't respond again to thespeakerdude on this thread) because they have no real knowledge (ie....real knowledge in audio is from listening tests) and it is just a waste of time.....it just goes on and on and they have to have the last word.  He probably thinks all passive components have no sound.....ie: he is against any form of tweaking.  You see.....as soon as you "define" something you have to then "defend" it.  This is what the ego does.  All religions have LOVE as their essence.......but when you get to the formal stuff....well, then it gets pretty rigid and judgemental (not loving or inclusive).  When you get that everything makes a difference sonically......then you are more open to possiblilities....and the possibilities are infinite.  This is the joy of audio.....that you can keep playing and learning and growing.  This is what the human soul has come here to do......to learn how to be more open, inclusive and loving.  Putting things in a box.....is well....so yesterday.  We are one....we are love and we are eternal infinte joy.

Thank God for the objectivists, otherwise we would not have ANY of the technology we now have in the world of audio.

 

@ricevs : if arguing with the speaker dude seems like deja vu, you are not dreaming. He has been here before multiple times, banned all times. Here is a full list of his previous (all banned) usernames:

 

thespeakerdude 

 

cindyment2

 

oddioboy

 

crymeanaudioriver

 

theaudiomaniac 

 

theaudioamp

 

deludedaudiophile

 

thynamesinnervoice

 

cindyment

 

snratio

 

yesiamjohn

 

sugabooger

 

dletch2

 

audio2design

 

dannad

 

roberttdid 

 

roberttcan 

 

heaudio123

 

audiozenology

 

atdavid