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Horizontal Bi-amplification: thoughts?

Wonder if it works that way.
Wouldn't be surprised if the channel driving the woofer it will switch to B and the one driving the tweeter stay in A.
That could also be entirely true, but I wanted to rule out any possibility (thus completely isolating both electrostat panels vs the woofer sections for each amp chassis). Anyway, one other thing that is important to me is visualization. If I go vertical, visually it's gonna be a little confusing which meter goes to what =)

Yes, I have a thing for VU meters LOL

1782316504222.png
 
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This particular amp operates in "Class-A" mode if it doesn't go over a certain threshold.
If your amp is well designed there will be no audible difference between Class A and AB


in theory it stays locked in the super-clean & low-distortion "Class-A" sweet spot at all times, perhaps(?)
You really need to ditch this “Class A sweet spot” idea. If your amp is well designed there there will be no audible difference between Class A and AB
 
You really need to ditch this “Class A sweet spot” idea. If your amp is well designed there there will be no audible difference between Class A and AB
Okay, so these online "audiophile" reviews about Class-A amps being the holy grail are all hype & no actual substance then(?)
 
Okay, so these online "audiophile" reviews about Class-A amps being the holy grail are all hype & no actual substance then(?)
correct.
You can safely ignore what those reviewers say about Class-A amps. In fact you can probably also safely ignore what they say about DACs and cables and preamps and power regenerators and quantum dots…
 
Okay, so these online "audiophile" reviews about Class-A amps being the holy grail are all hype & no actual substance then(?)
If they are not accompanied by measurements which prove their claims, and if listening tests were not done properly controlled: YES.
 
interesting, that's like saying the high-end/audiophile market is just one big scam :eek: That's too bad, I always wanted to acquire an Accuphase Class-A amp someday (which is a LOT of money)... if you guys are saying there probably isn't any difference between an amp like that... versus something like a reputable Emotiva Class A/B amp (which is just at a fraction of the price), then that's a big letdown LOL
 
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interesting, that's like saying the high-end/audiophile market is just one big scam :eek:

Umm, that's what we have been trying to tell you.
 
interesting, that's like saying the high-end/audiophile market is just one big scam :eek:
Actually it mostly is, especially with the small boutique brands. Of course there are notable exceptions (Bryston, Accuphase, and there are certain others) and some others at least deliver decent sound quality albeit at a very high price (DCS DACs for example).
That's too bad, I always wanted to acquire an Accuphase Class-A amp someday (which is a LOT of money)...
Accuphase does deliver good quality, but nowadays I would steer clear from class A (with 29 degree Celsius right now I don't need an amp pumping out 1 KW heat).
if you guys are saying there probably isn't any difference between an amp like that... versus something like a reputable Emotiva Class A/B amp (which is just at a fraction of the price), then that's a big letdown LOL
This is luckily true - you don't need to invest a lot of money to get transparent electronics. Base your choice on features, build quality, looks, but do not expect better sound for more money.
 
This is luckily true - you don't need to invest a lot of money to get transparent electronics. Base your choice on features, build quality, looks, but do not expect better sound for more money.
Will try to remember when I get a serious itch of buying something really expensive in the future, haha!
 
interesting, that's like saying the high-end/audiophile market is just one big scam :eek: That's too bad, I always wanted to acquire an Accuphase Class-A amp someday (which is a LOT of money)... if you guys are saying there probably isn't any difference between an amp like that... versus something like a reputable Emotiva Class A/B amp (which is just at a fraction of the price), then that's a big letdown LOL
Try it for yourself. It takes some time and effort and learning but setting up an ABX test for different amps is not that hard and when you experience it for yourself it is completely different than reading about it or being told about it by a random person on the internet. It will set you free from all the FOMO and point you toward what really makes a difference which is speakers and rooms.
 
interesting, that's like saying the high-end/audiophile market is just one big scam :eek: That's too bad, I always wanted to acquire an Accuphase Class-A amp someday (which is a LOT of money)... if you guys are saying there probably isn't any difference between an amp like that... versus something like a reputable Emotiva Class A/B amp (which is just at a fraction of the price), then that's a big letdown LOL
Your general point is spot on but if you look at the reviews of Emotiva amps on ASR you'll see that are much better alternatives (that are still much less expensive than Accuphase)
 
The class A vs. AB thing and the potential of review hype* is easy to sort out.
Find every review ever written comparing the performance of an amplifier (e.g., a Yamaha CA-800) operating at class A vs. class AB bias points.
Look for:
Comparison of THD levels at identical power output.
Oscillograms showing a difference in crossover distortion (ditto).
Comparison of the spectra of the distortion products (ditto).

Absent those -- yeah... hype.

And do note that I am not saying anything about audibility.
:)



____________
* I am shocked. shocked. ;)
 
I try to make the most of what I have (optimizing?)... love to experiment on new things & learn at the same time, I don't take the hobby too seriously... so I try to keep within certain spending limits & remain with a casual approach =)
And why not. You already have all the equipment. It's just cabling and trying things. Actually measuring/proofing any change for the better is the hard part.

These speakers with the panels taking over at 380Hz (afaik) is at least more interesting than bi-amping some tweeters with next to no power requirement.
 
Okay, so these online "audiophile" reviews about Class-A amps being the holy grail are all hype & no actual substance then(?)
I couldn't point to any proper review in that area. They probably exist, but most of them are just jibberish, praisals of the golden ad-customer, recycled long texts about timbre, air and a bunch of their personal records no one else cares about.

But that doesn't make these amps bad. They do that with all kinds of equipment.

The class A amps some love so much are a personal choice and that's perfectly fine. If you like inefficient old v8 cars and you can afford one, you might do it.
 
The class A vs. AB thing and the potential of review hype* is easy to sort out.
Find every review ever written comparing the performance of an amplifier (e.g., a Yamaha CA-800) operating at class A vs. class AB bias points.
Look for:
Comparison of THD levels at identical power output.
Oscillograms showing a difference in crossover distortion (ditto).
Comparison of the spectra of the distortion products (ditto).

Absent those -- yeah... hype.

And do note that I am not saying anything about audibility.

Great points... & it so happens I watched this video review last night (from Absolute Sound):

This intergrated amp has one interesting feature: "High Bias switch lets you select warm, detailed Class-A-like performance at low volumes with automatic switching to AB for full power"

Thoughts?
 
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And why not. You already have all the equipment. It's just cabling and trying things. Actually measuring/proofing any change for the better is the hard part.

These speakers with the panels taking over at 380Hz (afaik) is at least more interesting than bi-amping some tweeters with next to no power requirement.
exactly... "Why Not?", right? =D

It's definitely an unusual setup (large electrostatic panels bi-amped with two identical power Class-A/AB amps). My previous setup was this:
1782488663315.png


New setup is pretty much the same, with the exception of a second E-406 amp & the Martin Logan ESLs were swapped with the larger ESL-9s
 
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