Proline 3000 - People blowing drivers or Amp |
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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I'm almost sure there is a mistake, class-h stuff in reality.
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5482 |
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Class AB and H are not mutually exclusive. H/G is usually an AB biased output stage with switchable/variable power DC rails for an efficiency boost when it comes to not wasting power with low signals and fixed high voltage DC rails.
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Yes, true that. Basically AB-amplifier. However when ever I'm looking/buying amplifiers, I want to know is it standard AB or class H/G configured. Some class H/G amps are more problematic than AB in some cases, rail switching distortion etc..
There are so many different amp configurations around class AB having advantages and disadvantages. I have seen parallel configured class H amps too. Edited by Tonskulus - 08 April 2019 at 6:12am |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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Yes - I think that once you get to rail voltages over +/- 95 or so, you really need to go H or G to avoid excessive stress on the output devices. I remember reading an article once about how there can be more stress on the O/P transistors with the volume less than 100% due to the fact that the devices are having to drop a substancial amount of voltage, rather than just working in 'swithching' mode. And then add in phase shifts, etc: |
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Earplugs Are For Wimps!
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levyte357-
Old Croc Joined: 27 July 2012 Location: UK, South East Status: Offline Points: 8128 |
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Find it highly unlikely. Thomann have had these amps labelled as Class H on their site for at least 12x years. They would not change that "Willy Nilly". I would expect Deton has modified these amps. Unless Deton standards have fallen, and they are now blatantly lying in their specs, as is the case with other Chinese manufacturers. |
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Global Depopulation - Alive and Killing.
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Well, someone has to go and get one to see if it's ab or class-h..
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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Or just tell Thomann you want to buy a load - but need to know what they really are... |
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Earplugs Are For Wimps!
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levyte357-
Old Croc Joined: 27 July 2012 Location: UK, South East Status: Offline Points: 8128 |
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Called them, asking for clarification, lady says no one available in PA department now, email them.
Emailed PA department, as if these are actually new Class AB models, I want one. They read email, didn't respond. I'm thinking the respect I had for Thomann, is slowly evaporating... |
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Global Depopulation - Alive and Killing.
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U.Viktor
Young Croc Joined: 04 May 2010 Status: Offline Points: 716 |
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About the "Class-H" : All Class-H circuitry have rail separation diodes which completely blocking the reverse energy flow. This circuit works only with pure resistors type load, otherwise -- with reactive load-- the load character is completely undamped between rail steps.. In other words the membranes of speakers are "free floating" due lack of active damping effect. Maybe somebody like this effect but I would not say it *professional* You can not stack effectively working (proper phase aligned, SPL & transient response) multiple speaker arrays from random phase radiators neither.
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thes
Registered User Joined: 24 May 2018 Location: Italy Status: Offline Points: 29 |
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All i can say is that on deton website there are a whole new line of AONE amplifiers. Before we had Deeton AONE 3600 (marketed ny thomann as the proline 3000 we know) and the AONE 4400 wich, unfortunately, almost none of us has seen in real life. The new AONE series has 3 amps: A_ONE I, A-ONE II and A-ONE III. They are indeed class AB , the faceplate looks almost identical but the speacs and the rear are way different, a total different amplifier. I don't think that thomann could ship an amp so different in place of the old amp without warning the buyer. Also new Deton amps have poor specs: damping factor and slew rates are very poor. Hope t hey don't go downill like naphon did. Also, i must point out that thomann never advertised ta 2400 and proline 3000's as class H amplifiers on their websites or manual, no information on the class of these amplifiers has ever been available from thomann and the schematics have never been available. Honestly i can't recall if deton has ever advertised the AONE 3600 as a class H amp or not but, on their website, AONE 3600's specs are still available and there's no mention of the class of that amp. I do think they are class H at this point but, more than that, i would be interested in knowing how they would perform in a home stereo setup in terms of sound quality
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levyte357-
Old Croc Joined: 27 July 2012 Location: UK, South East Status: Offline Points: 8128 |
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I have the circuit schematics from for the Proline series.
Also, the more sharper eyed readers, will have seen All the new AONE series, are lighter, than the Proline 3000, even the more higher rated amp. This smells fishy to me, especially as they use the new 3U backplate pic, in the specs for a 2U lightweight amp. Think the glory days of Deton/Thomann Proline might be over. Edited by levyte357- - 08 April 2019 at 6:26pm |
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Global Depopulation - Alive and Killing.
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thes
Registered User Joined: 24 May 2018 Location: Italy Status: Offline Points: 29 |
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Totally agree. Please can you comment on the sound quality of the proline 3000? I would love to use it FULL RANGE for listening / monitoring pourpose. Right now i'm using a qsc rmx 2450...would the proline 3000 be a step down?
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