Amps stable down to 1ohm or below...

Mike said:
Pass amps are awesome, but I’ve talked to them and they are stable down to the rated wattage (4 ohms).
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Nelson has always taken this approach , even from his threshold days. Big thresholds will drive 1 ohm loads on music content all day , will require a fuse change, same for the big Pass amps .....


Regards
 
a.wayne said:
Sanders magtech amplifiers are way too small to have a "fully" regulated PSU ......
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Here is their claim taken directly from their website:

Sanders has solved these problems by developing a voltage regulator that is essentially 100% efficient. There is no heat dissipated by the regulator system. There is no high-power/high-voltage switching that causes heat generation or RF problems.
The regulator in the Magtech amplifier maintains a stable voltage regardless of load or reasonable changes in the line voltage feeding the amplifier. It runs stone cold, produces zero RF energy, and is simple and reliable.
Unlike other amplifiers, the distortion in the Magtech amplifier is virtually unchanged regardless of power level. The bias is stable regardless of load.

 
audio.bill said:
Here is their claim taken directly from their website:

Sanders has solved these problems by developing a voltage regulator that is essentially 100% efficient. There is no heat dissipated by the regulator system. There is no high-power/high-voltage switching that causes heat generation or RF problems.
The regulator in the Magtech amplifier maintains a stable voltage regardless of load or reasonable changes in the line voltage feeding the amplifier. It runs stone cold, produces zero RF energy, and is simple and reliable.
Unlike other amplifiers, the distortion in the Magtech amplifier is virtually unchanged regardless of power level. The bias is stable regardless of load.
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Yes i have seen that before , its a good amp at 4 ohm on maggies, its not a 1 ohm load amp for sure.

As to the web site claims, i haven't seen any bench testing to confirm , maybe he is running quantum nanotech technology beyond the norm ..

:)


Sanders uses like NP, a very large output stage , 10pr's i think so it will drive a 1 ohm load but sinks are pretty small for any continuous usage at that load ..


Regards
 
Spectral.

Cannot just drive MLs, but do so easily. Heard them sound *very* dynamic on these speakers. In fact, I had no clue that MLs can do macrodynamics that well until I heard them driven by Spectral.
 
Al M. said:
...says someone who hasn't heard what I did with them driving MLs.
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I haven't heard yours, but i have heard spectral and know the design well, it's not for 1 ohm , not enuff heat sink area , limited outputs so high beta droop.


What would interest me if you can, is an impedance graph on your modded ML's , i would consider a true 1 ohm load as being 1 ohm from 500 hz-20K, plenty musical content there .....




Regards ...
 
a.wayne said:
I haven't heard yours, but i have heard spectral and know the design well, it's not for 1 ohm , not enuff heat sink area , limited outputs so high beta droop.


What would interest me if you can, is an impedance graph on your modded ML's , i would consider a true 1 ohm load as being 1 ohm from 500 hz-20K, plenty musical content there .....




Regards ...
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It's not mine, but those of a friend (ML Odyssey). The panels are not modded.

I've heard the set-up many times, it's not a fleeting one-time impression. If you want to arm-chair argue with me, be my guest, it won't do you no good.
 
a.wayne said:
I haven't heard yours, but i have heard spectral and know the design well, it's not for 1 ohm , not enuff heat sink area , limited outputs so high beta droop.


What would interest me if you can, is an impedance graph on your modded ML's , i would consider a true 1 ohm load as being 1 ohm from 500 hz-20K, plenty musical content there .....




Regards ...
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What about at 71hz? [emoji6]


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Al M. said:
It's not mine, but those of a friend (ML Odyssey). The panels are not modded.

I've heard the set-up many times, it's not a fleeting one-time impression. If you want to arm-chair argue with me, be my guest, it won't do you no good.
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Arm -chair arguing ? project much ..? Obviously you misunderstood my response ...?
 
Mike said:
What about at 71hz? [emoji6]


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Mike a 1 ohm dip is too narrow to be considered 1 ohm load as it will be confined to just that frequency. any decently built amp will not have an issue plunging such depths , of course there are those who will shy away for the moment ... :)


Now if you have a 1 ohm speaker from 71 hz-20K , most likely you will need a good hand truck to move the amp capable ...
 
a.wayne said:
Mike a 1 ohm dip is too narrow to be considered 1 ohm load as it will be confined to just that frequency. any decently built amp will not have an issue plunging such depths , of course there are those who will shy away for the moment ... :)
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It’s multiple frequencies around 1ohm.


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a.wayne said:
If with low sensitivity , then yes , big issues , no worries, you have an arsenal of amps quite capable ....
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Luxman M900u - bipolar output stage. Stable down to 1ohm.

Hegel.
Bryston.




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