Topping B100

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#41
drummerman111 said:
The B200, you probably all have seen it already. It looks nicely made. Although twice the price I think I would pay this for the better build and more than twice the power ... . It does take it into the more 'serious' integrated amplifier level though, but not many of those have 200w/ch. Plus I would need a decent Pre of some sort too. Tubes perhaps just to undo all the perfection?

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View attachment 1358136
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Those output inductors in close proximity don't look as good design.👎
 
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#42
It may or may not be based on what's covered in this patent, for your perusal. It's the only relevant one I've found where the applicant is "Guangzhou Topping Electronic And Technology Co Ltd", which may or may not be the company that makes the amplifier. Note that figs. 1 and 2 are prior art, the claimed invention starts on fig. 3.
 
#44
For enthusiasts who would like to use such fine toys in a creative way:
Faced with such extreme set of parameters, all we ordinary diyers may do are just two reasonable actions. Either: attempt to reverse engineer the device for learning purposes or to find a way to extract the best out of them. For example: select an adequate DAC, preamp and active crossover and then add to that a pair of B200s for woofers and a pair of B100s for tweeters. That's not a trivial task because even the best speakers have comparatively much higher distortion than these Topping devices. Costly enterprise, but tempting...
 
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#49
I don't like class D because for now, all those I've listened to gave me the same feeling, namely, really good the first few hours but tiring in the long run (certainly not listened to the best or most recent in the field).
On the other hand, I've had a few class B and I'm curious to hear those so I'm going to lie in wait to buy a pair of B100s or B200 as soon as I find some on the second-hand market.
 
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#50
B100 heatsink seems small for power rating.

External power supply is single rail 38 volt at 4 amps.

So would need to be bridged topology to get anywhere close
to rated wattage.

Claims 56 volt peak to peak 4 ohms.

So not sure how a bridged " Class B" amplifier
Can do 5 amps of current with a 4 amp power supply.

Maybe I missed something?
Might have just been a smaller power supply used
for testing in the review.

Dont know, looks like something that will shut down and break
in about a hour at any real power levels.
And expect the switch turd power supply to die in the usual 3 to 5 years
might last about 7 years since it will spend most its life overheating.
Aka turning itself =off
 
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#52
dadod said:
Those output inductors in close proximity don't look as good design.👎
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Yes, even a half beginner picks up how to orient inductors in a x-over to stop cross induction... but it doesn't look as nice in the super slick juicy product photos if one stands up and the other lies down...

With a little imagination and invention they could have mounted them like a "V" - that had even looked cool and different... (c) 😎

It looks like that could be a doable mod actually - seems to be some space to tilt them L/R.... maybe...

//
 
#55
^ I admit I get confused by this a lot. From what I could gather, the performance of the amplifier from very low output to rated output varied by only small amounts across the entire frequency range into a variety of resistive / capacitive loads. That's one of the things that made me curious about the amplifier.

Now, if what you mean is that "real" or "non-easy" speakers need more than 4A of max current to drive them to comfortable listening levels in a near-field environment ... we differ in our opinion, but at least I understand your POV.
 
#56
Because bridged uses even more current.
And makes the Heatsink size even more questionable.
Because of higher heat also found in bridged amplifiers.

Its only a issue since the claim is Class B
if this was a Class D module it would make more sense.

Then it follows typical fantasy numbers for switch mode
amps. 80 watts peak meaning 20 watts for 2 Hrs
 
#57
Where does the manufacturer claim "Class B"? I admit that I have looked and not found it. There was/is a notation from a website (ASR) that says it's "Class B". That may be their mistake/assumption. I truly don't know.

Me... I don't personally care what class it is. It seems to perform well up to the power levels I need at a price that seems attractive, in a form factor that will work for me.

I truly appreciate folks that scrutinize the design characteristics, it helps me learn.

Thanks!

:cheers:
 
#60
huggygood said:
I don't like class D because for now, all those I've listened to gave me the same feeling, namely, really good the first few hours but tiring in the long run
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Yes , for the imaging and highs. But , the use of class D for the bass is wise. Even my party system , I can choose any of my 50-80w AB amps to go with my
400W Hypex sub amp (2.1) . It sounds like you are listening to the AB system , but with killer (efficient) bass. D is good at what it does - convert trafo watts into
speaker watts.
OS
 
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