Class A or AB amp for JBL S4700 speakers


Which should I go for and why? Brands I'm looking at are Accuphase, Pass Labs, and maybe McIntosh.
dave_72
BTW Dave72, What amp did you ever get?

Nothing yet. You will know when I update my 'Systems' page here.
Well Bo, that's cool, but we're not talking about speaker cables at this time...
Hahahahaha..hey Dave the k2 and Everest are also speakercables from Audioquest.
No problem. It's the result of many hours of research and talking to people that know their stuff. Plus, auditioning the damn things more than once. Which I recommend that anyone does, including you. That's cool that your speakers are working for you.

Now, as far as the looks are concerned. A little bit, but not too much. The K2 has a curved cabinet and different tweeter and midrange horns.
The K2 is not complete. Because it has not enough gauge. You hear it back in the overall sound.

The new Wel Signature beats the Everest in timing and precision.
Thank's dave72, that was very interesting, I would have never thought that, since I have not listened to these speaker's, I have listened to many, many JBL speaker's in my time, I even own a pair now, of course not to the level we are talking here, needless to say, with all that I have done, these are singing!, the s4700's look like the k2, you think?
I do now. Meaning, that they took a while to break in. Imo, they don't sound that good out of the box. They sound a bit dark, muddy, and closed-in.

The differences are the type of drivers used, the horn geometry, and the shape of the cabinets. As far as the differences in sound, I think these sound better than the Array 1400s, although quite a few would disagree with me on that. Also, these have better bass than the K2s. But the highs and mids of the K2 beat these. And of course the Everest beats all of them. I haven't heard the S3900, so I can't say. Some like them more than the S4700s, though.
Hi dave72, did you like the sound of the JBL S4700s?, what is the difference in sound between this model and lesser and more exspensive model's?
Yes indeed. They are the S4700s!

I am not pictured in any of the photos in that post.
Hi Dave72, are those JBL speakers?, they sure look like them, anyway, which person are you on the listening panel, the couch?
Thank's dave72, I did not know the name of your audio club or where to find it if it were on another site.
Damn Dave_72, it's been a month, can you tranfer that info to this thread?, thank's.
It was good. Stay tuned for the article that's going up on our blog/website. There will be reviews by myself and the others, plus some pics. Thanks!
Ok, thanks. I don't think we'll do a shoot out though...we wanna evaluate the amp on its own merits. We might if we have time to do so. :)
You might want to get a sound pressure level meter so you can be sure both amps are playing at the same level. First Watt amps don't make a lot of power relatively speaking.

My money is on the First Watt as being the better sounding amp within its power range.
The X350.5 is a stunning amp, but don't forget that I use cables expensive cables ( Wel Signature 2 times 7500 dollar, 2 times Purist Audio Limited 4000 dollar)

But these cables are so important to give the level I have now. The stage is wide: about 1.5-2 metres beside the spakers. The difference I have now is that the stage is also higher on the side pf the speaker. This is caused by the Wel. I never autioned any cable which was this good in stage height. It is a lot more involving than the X250.5. I have a more musical sound with my combo now than what I had with the XA100.5 and XP-20. The Purist Limited edition make the mid freq. a lot more involving. Like you go from X to XA series. But now with a X amp. I have more spatial and air than what I had with the XA-100.5. The drive in the low freq. are F. awesome. Like your spakers are on steroids. The control is so tight, fast and well layered. I have by far the best overal sound I had so far.
I agree Ralph +1, Class A amplifiers are class A right to full output.
Atmasphere (Threads | Answers | This Thread)
I first owned 3 XA amps and I thought I would prefer them. But when I bought the XA250.5 and the Purist Audio Limited Edition I chnaged my mind. Without the Purist Limited I would have thought differently. This one had such a big influence on the sound, stage, focus and articulation of voices.
In other words, it is class AB.

Class A amplifiers are class A right to full output.
It is 2 times 4o Watt class A. This means you almost never will come to class B. Even with my X250.5, it only happens when I play at extreme levels. This has a lot more in class A.

I owned the XA 100.5/60.5 and 30.5 as well. The X series has a little more air in the high freq.

The X350.5 has more drive and control as well even at very low volume. I use Purist Audio Limited Edition powercables. They make the mid freq so much more musical than no other powercable can. I will receive it today :)
I bought a X350.5, it is a few years old. Within a week it is ok. No long burn in period. :)
Bo, I look forward to your impressions of your new Pass Labs amp, which model is it again?, may take you a while to come to conclusion's on the amp, burn-in would be likly be a fault, how long does The pass amps take to be broken-in?
I will receive it next week. I am also planning to become Lumin dealer. I will write a review soon about the new Audioquest Wel Signature. When I become Lumin dealer, I will do a review about the S1 soon.
I understand your position Bo1972,I believe you, no explanation needed anymore, your cleared up Bo, however, NVP is not crying here about anything, you are!, talk here all you like, just move on to what all of us have been talking about, NVP has said nothing more!, I enjoy what you have to say about the pass labs amps, Do you have something to say about your new amp yet?
You read the shit as well, so I want things to be clear. He is the one who should send me a personal message. He F... up the thread. Just focus on the facts!!
Hi Bo1972, your ok with me, I would let the NVP thing go and move on, you should E-mail NVP instead of wrecking this thread out would be a great idea!, cheers.
This is not the place for either of you to be fighting. Please refrain from doing so regardless if he "made the mistake" or not. Take that up with Nvp personally. This thread is not about you, Bo. It's about the right amp for my JBL speakers.
I didn't start it, so please focus you on Nvp. He is the one who wrote this in your thread. Focus on the facts please! He is the one who is talking bullshit. He made the mistake!!
Bo, I ask you kindly to stop derailing this thread. I see that your irritated, but take that up with Nvp, please. This is not the proper place for tirades...
You should translate what I wrote. Clients and people who work in audio said that time that they all agree what I said.

When you write things which are based on facts it makes it a lot easier. That is why I always say: proof the opposite. I give my personal opinion. You can speak as well.

The world is hard and not honest. I am on a mission and I want audio to become more open and honest. I want people to get more quality, so you need to be hard on those brands which do not give customers a good quality.

When there are too many products which are better in quality for the same money, you have a worse product. It is that easy. I hope they will create better products for their customers. What is wrong to tell people the truth?

Hifi.nl is not a highend site. We don't have this in holland. It is a commericial website. The better audio shops in the Netherlands are not that happy with this website. For example ( facts agains) They test surround amps with 3 different kind of brands with speakers. There are many of these limitations how they work.

You need to focus on facts. When you work more precise people get a higher endresult.
This is not a forum. This is a commercial website. In the past you could react with your facebook acount( This is over 2 years ago). I have reacted on a Bose article. My words are not bassing, but telling the truth and it is based on facts. I sold Bose for a few years. We ( colleagues and I) found it in quality the worst product we sold. This has nothing to so with a personal preference. Bose uses plastic cabinets for there speakers. The units they use have a very small magnet. Like their subwoofers are poor in quality. Their small speakes all miss an important part in the mid freq. We tested things like this all the time. We compared it with others. Like I said many times; more than 90% in audio is not worth the money. And yes I hate inferior audio. Because it need to stop that people do not get a decent level of quality. And yes this is a hard way, but it is the most honest way possible.

It is a personal opinion, we live in a free world. When you think differently, speak free. And tell your own opinion.

My way of working is creating a higher level in endresult than any competitor. My competitors have cances to. So use them and show you can create a higher level. It is that simple!

Audio is all about comparing. This is the fun part, but on the other side audio is a personal matter. 3 dmensional sound is the most important part for highend audio. When you talk to people with expensive sets and people who sell highend audio they all agree. This has nothing to do with my personal taste. 3 dimensional sound is more exiting and confincing than 2 dimensional sound. These are things which are very easy to understand for people.
Hi Kevin, allow me to explain; we (the audio club) will be evaluating the Pass Labs amp on its own merits. It's not gonna be a Pass Labs vs. Bryston shoot out. We could do that, but I agree with you, it's kind of pointless.

Yes, I realized this once I got the speakers. This is why I'll be upgrading early next year. To exactly what, I dunno. However, the brands I'm considering are Pass Labs, Luxman, Accuphase, and McIntosh; leaning heavily towards Accuphase at the moment.

I hope this clears things up!
Hi NVP, pretty good, you handled this like a lawyer that just won a case that had all the odds against him, I hope I never get on your bad side, Happy Thanks giving to all on this thread.

I have pasted below a link to a dutch review for Bose:

Bose review with Bo1972's comments

Bo1972’s comments can be found at the end of this review. Those interested to read (again) the usual preach of Bo1972 (i.e. Bobby Kingma) should just copy/paste them into Google Translate.

I let you judge how petty is a "high-end dealer/consultant" who feels the need to trash Bose on the main dutch high-end site.

With this I rest my case.
"For the record he does similar things also on the dutch sites, and seems equally illiterate and incoherent in his mother tongue.) "

Which dutch sites you F. idiot? I am on no dutch site. You are talking bullshit. So you are a big lyer. We are going to take a person with Avantgarde speakers serious....yeah you're right, are you F. kidding me?

People who tell lies should be banned from this website.

Dave, sorry to make a train wreck out of your thread--my first time ever! ;p
Just thought you actually knew more than them smartasses and deserve better than all these BS advises--making out imaginary sound from reading/hazy past experiences without the need to actually listen/compare themselves. So sad.

Bvdiman, I am sure Dave agrees when I say that you have no reason to apologies. Those who have crossed paths with you on audiogon in the past know that you are a gentlemen. I have seen you more than once congratulating audiogoners (including me and Dave) for their humble equipment. Given the fact that you own top-of-the-line FM Acoustic and Accuphase products this says a lot about your manners and love for this hobby.

It is too sad that the audiogon moderators do nothing about Bo1972, i.e. Bobby Kingma from Sound & Vision Consulting. Not only is he trashing one thread after another by repeating the same things over and over again irrespectively of the topic discussed, but, more importantly, he is a dealer who shamelessly bashes the brands he does not sell and their owners. (For the record he does similar things also on the dutch sites, and seems equally illiterate and incoherent in his mother tongue.)
I think you are right, but it also depends about the speakers a person owns and how the stage is build.

Pass Labs builds a wider and deeper stage than any Bryston. I always say: without depth there is no highend sound.

The Pass has a much bigger pallet of colors in the mid freq. which need ot be there for the absolute sound.

When you have spakers which cannot build a deeo stage this part and advantage will not be there even if you use a Pass. I don't know this JBL speaker, so I cannot judge.

The better soundrealism also depends on the level and quality of a source and cables. It is not that easy to say!
There's no need for anybody to wait for any article. There's no "mystery" here. You will prefer the Pass to your Bryston. It's not that Pass Labs makes a great amp...it's just that it's good enough to outperform the Bryston.

You've got such good speakers, it's a shame you're wasting your time on such average electronics.