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Ampeg PF issues cutting out?

#62
agedhorse said:
The Rumble is solid state and happens to be class D, the Ampeg BA-300 is also solid state and happens to be class D too.
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Sorry but thats incorrect. Ampeg clearly shows the BA series as solid state, not Class D. Fender and GK separate the two with their amps as well. Just admit you are incorrect here. Thanks.

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#64
mbell75 said:
Sorry but thats incorrect. Ampeg clearly shows the BA series as solid state, not Class D. Fender and GK separate the two with their amps as well. Just admit you are incorrect here. Thanks.
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Why? I'm not incorrect.
https://ampeg.com/pdf/BA300.pdf clearly states it's class D

The BA-600 is also class D as is the BA-210V2 and BA-115V2.
 
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#66
The term solid state electronics was introduced with transistor based equipment to distinguish them from tube based electronics whose amplifying electrons functioned in a gaseous state.

A solid state amplifier controls the flow of electrons through a solid crystalline based device that isn’t a full conductor, it’s what is called a semi-conductor.

Semiconductors are made from different solid materials. If they ever find a good way to use a type of liquid as a semiconductor, perhaps they’ll call it fluid-state. Electrical charges may be able to dynamically change the configuration of the fluid semiconductors, allowing the amplifying elements to conform to any design class.

You never know what’s on the horizon.
 
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#67
mbell75 said:
Sorry but thats incorrect. Ampeg clearly shows the BA series as solid state, not Class D. Fender and GK separate the two with their amps as well. Just admit you are incorrect here. Thanks.

View attachment 3427969 View attachment 3427970
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The trick here I believe is the following:
It's not: "It is akin to a solid state amp"
But: "It is akin to a solid state amp with a switching power supply (that can significantly reduce the weight)"

In other words, the class D amp is a special kind of SS amp that has a feature that makes the head weigh significantly less than other SS amps.
 
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#68
High Camp said:
The trick here I believe is the following:
It's not: "It is akin to a solid state amp"
But: "It is akin to a solid state amp with a switching power supply (that can significantly reduce the weight)"

In other words, the class D amp is a special kind of SS amp that has a feature that makes the head weigh significantly less than other SS amps.
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This is certainly more accurate at least.
 
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#69
mbell75 said:
The BA-300 is an old amp they no longer make. They must have switched it up because the V2 BA amps don't mention Class D anywhere I have seen and Ampeg puts the V2 in the solid state section of the link I posted, not in the Class D.
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You might not realize that I make my living designing products by knowing exactly what's out there (and how it works). I have a "specialty" of being able to read well beyond what marketing has to say about anything.
 
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#71
If u turn the compression all the way down and gain no more than half way I don't have problem. Turn the compression just a little to the right and it will cut out after about 5 minutes. This is all with volume set to 5.

PF800 never has any problems.
 
#72
agedhorse said:
You might not realize that I make my living designing products by knowing exactly what's out there (and how it works). I have a "specialty" of being able to read well beyond what marketing has to say about anything.
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Thanks. I wasn’t questioning your knowledge on the subject but thought that you may have been mistaken on this product. Strange that I can’t find any info anywhere that calls the V2 BA series amps Class D. Everything I see from Ampeg and retailers just says solid state with no mention of Class D. I think beans-on-toast is on to something with the marketing.
 
#75
JimmyM said:
And it's SS, too!

:D

I am, however, led to understand that the others in their current BA line are trad SS with a power transformer. I have the BA112 and 110 v2 and they are.
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I believe the BA-115 V2 is also class D.
 
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#78
JimmyM said:
I will ask Hodgy for a ruling tomorrow. I couldn't find a gutshot of one, but I'd swear it was class AB with a power tranny.
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It may be, I thought I saw the V2 had been changed but I'm not positive if this.

The 3 BA amps that I know are class d are the BA-600, 300 and the 210V2. All 3 are also solid state.
 
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#79
Hi folks :)

Marketing is not about facts! e.g. (Class D + marketing = digital :banghead::banghead::banghead:)

It' s about snake oil, magic fairy dust, mojo…

Marketing quotes:

Solid state: These amps are more reliable and have a lower signal to noise ratio than tube amplifiers.

For me that reads like: Our tube amps are unreliable and noisy things, you should not buy. :confused:

Class D: …… Examples: ….. PF series

Afaik PF stands for Portaflex…?


Link Removed

But what do I know? I don' t work in marketing.

1-Spaceballs-quotes.gif



may the bass be with you

Wise(b)ass
 
#80
Back on topic:
Despite everything negative being said about the PF series, I ordered a PF350 last sunday. I am confident it wil work without problems/just fine. I am not going to push the amp to its limits.

While I am writing this I am listening to music from a CD (CD-player: SS, digital to analog) played over a single ended class A tube amp and enjoying it;)!
 

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