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Post by davidr9889 on Aug 26, 2024 21:07:53 GMT -5
Hello, I currently own an Emotiva basx PT1 and basx A2. I was wondering what the output current is on these amplifiers?
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Post by AudioHTIT on Aug 26, 2024 21:32:05 GMT -5
Hello, I currently own an Emotiva basx PT1 and basx A2. I was wondering what the output current is on these amplifiers? Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? |
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Post by davidr9889 on Aug 27, 2024 4:18:33 GMT -5
Hello, I currently own an Emotiva basx PT1 and basx A2. I was wondering what the output current is on these amplifiers? Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? No, I had an avr that output 75 amps and that was considered low. |
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ttocs
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Post by ttocs on Aug 27, 2024 8:39:41 GMT -5
Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? No, I had an avr that output 75 amps and that was considered low. Which AVR? |
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Post by foggy1956 on Aug 27, 2024 9:04:50 GMT -5
Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? No, I had an avr that output 75 amps and that was considered low. 75 amps or watts? |
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ttocs
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Post by ttocs on Aug 27, 2024 9:53:08 GMT -5
As an example, my Krell DUO XD 300 will output:
540 Watts @ 4Ω
49V RMS
16A Current
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Post by AudioHTIT on Aug 27, 2024 11:33:19 GMT -5
Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? No, I had an avr that output 75 amps and that was considered low. Sorry, no you didn’t. |
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Post by davidr9889 on Aug 27, 2024 13:35:30 GMT -5
No, I had an avr that output 75 amps and that was considered low. Sorry, no you didn’t. Im talking about the High Instantaneous Current. |
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Post by AudioHTIT on Aug 27, 2024 16:43:22 GMT -5
Im talking about the High Instantaneous Current. To get 70 amps of instantaneous current w/4Ω, you would need an instantaneous power of close to 20,000 watts. Do you really think an AVR did that? I’d be surprised if any HiFi amp could do this. It would be a rare argument for really big speaker wire! What is motivating your interest of this spec? Edit: I’m not saying current isn’t important, and Emo makes the HC-1 that touts High Current capability, but it’s not a spec that’s commonly given, and tends to be of value with specific speakers. |
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hemster
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Post by hemster on Aug 27, 2024 16:52:34 GMT -5
Well just doing the math, the A2 could deliver just shy of 8A (per channel) at 4Ω. Is that what you’re asking? No, I had an avr that output 75 amps and that was considered low. I think you may mean 75 Watts (not Amps)? |
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LCSeminole
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Post by LCSeminole on Aug 27, 2024 17:52:09 GMT -5
No, I had an avr that output 75 amps and that was considered low. I think you may mean 75 Watts (not Amps)? This is what I’m thinking as well. |
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Post by davidr9889 on Aug 27, 2024 18:22:33 GMT -5
Im talking about the High Instantaneous Current. To get 70 amps of instantaneous current w/4Ω, you would need an instantaneous power of close to 20,000 watts. Do you really think an AVR did that? I’d be surprised if any HiFi amp could do this. It would be a rare argument for really big speaker wire! What is motivating your interest of this spec? Edit: I’m not saying current isn’t important, and Emo makes the HC-1 that touts High Current capability, but it’s not a spec that’s commonly given, and tends to be of value with specific speakers. I was just curious because a buddy of mine has the harman kardon hk990 and he claims that amperage is more important than wattage. My old harman kardon avr 8000 did have an HIC of 85 amps, you can google the specs if you want. I had to look it up to make sure I wasnt mistaken |
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Post by AudioHTIT on Aug 27, 2024 20:48:22 GMT -5
To get 70 amps of instantaneous current w/4Ω, you would need an instantaneous power of close to 20,000 watts. Do you really think an AVR did that? I’d be surprised if any HiFi amp could do this. It would be a rare argument for really big speaker wire! What is motivating your interest of this spec? Edit: I’m not saying current isn’t important, and Emo makes the HC-1 that touts High Current capability, but it’s not a spec that’s commonly given, and tends to be of value with specific speakers. I was just curious because a buddy of mine has the harman kardon hk990 and he claims that amperage is more important than wattage. My old harman kardon avr 8000 did have an HIC of 85 amps, you can google the specs if you want. I had to look it up to make sure I wasnt mistaken Well I did find an HK8000 spec sheet, and they do list: High Instantaneous Current Capability (HCC): +/- 85 amps. I have no idea what the standard is for measuring that, but HK forums seem to like it. I’d still say high current is most advantageous with difficult speaker loads. |
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KeithL
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Post by KeithL on Aug 28, 2024 10:03:51 GMT -5
I'm afraid that your buddy was just a bit uninformed (he believed a popular myth that many audio companies like to encourage)... The amount of current that a load draws is based ONLY on the voltage you apply to it and the impedance of the load. So, if you connect the same speaker to two amplifiers, and have it playing at 10 watts on both, then it will draw exactly the same amount of current from both. And, if one of those amplifiers can deliver 5 amps, and the other can deliver 500 amps, THAT SPEAKER WILL *STILL* DRAW THE SAME CURRENT FROM BOTH. (This is assuming that it is playing cleanly, without distorting, on both.) There are certain few really unusual speakers that have an impedance that drops extremely low at certain frequencies... (There is one notoriously difficult to drive vintage electrostatic speaker whose impedance drops to 0.9 ohms at 20 kHz.) But here's the thing... If the amplifier is unable to deliver the current required to drive the speaker at the level you set then it will distort. And, more to the point, if an amplifier can drive a certain speaker to the level you want, WITHOUT DISTORTING, then it has "sufficient current capabilities to do the job". AND, IF THAT'S THE CASE, THEN YOU GAIN NOTHING BY HAVING AN AMPLIFIER THAT CAN DELIVER MORE CURRENT THAN YOU NEED. So, yes, that Krell amp MAY be able to drive one or two obscure and very difficult to drive speakers that a "normal" amplifier cannot... And it can probably make much bigger sparks if you short the speaker wires together (but... please don't do that). But, other than that, you are paying extra for a capability that has no significant real-world value. (And, if you do own one of those one or two really hard to drive speakers, you really should audition whatever amp you plan to buy, since there are other factors involved as well.) It's not that difficult to design an amplifier whose output stage can deliver massive amounts of current for a very short period of time. But, it does cost a bit more, and contributes nothing to how that amplifier performs, or how it sounds, under normal operating conditions. (All it's good for is "bragging rights"... and only that if you can convince your customers that it actually matters.) The bottom line is that we don't publish that spec on our amps... and we generally don't measure it either... since it is a more or less meaningless number. Rest assured that the BasX A2, and all of our other amps, can deliver all of the current they need to, in order to deliver their rated power without distorting. (And leave the "maximum short term current capability" rating to arc welders and car batteries... where it matters.) To get 70 amps of instantaneous current w/4Ω, you would need an instantaneous power of close to 20,000 watts. Do you really think an AVR did that? I’d be surprised if any HiFi amp could do this. It would be a rare argument for really big speaker wire! What is motivating your interest of this spec? Edit: I’m not saying current isn’t important, and Emo makes the HC-1 that touts High Current capability, but it’s not a spec that’s commonly given, and tends to be of value with specific speakers. I was just curious because a buddy of mine has the harman kardon hk990 and he claims that amperage is more important than wattage. My old harman kardon avr 8000 did have an HIC of 85 amps, you can google the specs if you want. I had to look it up to make sure I wasnt mistaken |
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