@@killcar5nbike2 Thank you. Across the board, from Behringer to Powersoft, the continuous rating appears to be between ten and twenty percent of the quoted burst-rated numbers. I still love my iron-and-copper 34kg monsters that can actually output their quoted power, but my aging back does not!
@@thedubwhisperer2157 I prefer iron. I worked on the old C audio SR707 and SR808 amps for someone 15 years ago. Those things were still working fine even though they were old back then. Don't know where they are now, bit if they've been serviced they will still be working now. I'd imagine that when nice light amps came along, those big old heavy lumps got scraped. Which is a shame, as they were built to last. I always go heavy iron transformer and big heatsink when I build. Can't be beat for reliability on a permanent install.
@killcar5nbike2 Would you know the bias voltage of the mosfets I just did a repair replaced the mosfets and pwm IC’s and apparently I have to test the bias voltage of the mosfets even though they are the same mosfet make and model they only difference would be the batch number cheers Rick
Class D don't have output stage bias. They use a dead time that's controlled by associated components around/in the control IC. Whoever told you that is an arm chair technician.
@@killcar5nbike2 je trouve que les câbles pour haut-parleurs que vous utilisez ont une section trop petite pour les courants en jeux dans cette expérience . Quand je mesure des amplis en classe D, j'utilise un ATS2 avec filtre 0025 et des câbles ayant une section de 6mm2. il est préférable de les tester avec des sinus en burst pour trouver leurs puissance avant que le limiteur ne se mette en fonction .. I find that the speaker cables you are using have too small a cross-section for the currents involved in this experiment. When I measure class D amps, I use an ATS2 with a 0025 filter and cables with a cross-section of 6mm2.Better impédance matching. It is better to test them with burst sinuses to find their power before the limiter kicks in.
I have this same amp for already two years in a half. It sounds good and hits bass nice. But the volume at half way it’s already limiting. I tried it at 4 ohms and 8 ohms . Still gets the limit light on. Full volume at 8 ohms stereo mode redlines but won’t shut down . It’s just crazy how the limit lights comes out so soon with out hurting the speaker or sounding loud.
This one's running 2.6 ohm on each channel. If your load is only rated for 300 Watts then you need to keep the volume level low to stop it being over powered.
Can anybody explain why several heaters are not used in direct parallel connection, stupid transformer makes no sense then, as if its easier to find such transformer compared to heaters. 2kw heater has impedance about 24 ohm, old school electric oven is even better about 7kw. Transformer creates more problems and limits.
Because the heater is from my bedroom and the transformer is one I had laying around that just made the heater an ideal load impedance. If I was doing lots of power tests on high power amps I'd make a proper load out of several heaters with series capacitors to cancel out the inductance to make the loads purely resistive.
@@killcar5nbike2 Pure resistivity has nothing to do with it, your current combination is also far from resistive, any loudspeaker is a reactive load. Your transformer limits all measuring so much that it makes all conclusions pointless, unless you find a pure 5kw+ transformer with proper construction.
@@MrSookonn I'm well aware speakers are a reactive load. For quantifiable results over repeat tests you need a purely resistive load. The transformer is only a purely inductive load when there is no load on the secondary. The heater is still a very near resistive load and it is easy to measure the power being dissipated in the load as it would be if the transformer were not there. I get quite a few comments on some of my various true power test videos by people who haven't watched my other videos who assume I don't know how to do x,y,z or know about a,b,c. I design, modify and fix all manner of electronic items. Power testing amps is just something I do when I'm bored and fancy an easy tinker about.
@@killcar5nbike2 Overdriving a transformer creates short circuitry like conditions. Your protection circuitry will be activated, possible damage to electronics.
@@MrSookonn the transformers voltage rating for saturation is at 50hz and with no secondary load whilst flux density is at it's highest. Every octave increase in frequency increases saturation voltage by 6db. At 1khz that's 26db voltage that the transformer can take before saturation than at 50hz. The limiting factor is no longer core saturation but I2R dissipation in the windings.
so why is it a 8ohm rated amp if it does not like anything less than 16 ohm actually? also why does it have a bridging ability if it hates 4ohm cause we know 4=4ohm=8ohm load and most people bridge amps to run dual 18s and thus this amp will cook if you run it bridged so yeah...
It's rated 2 ohm per channel, or 4 ohm Bridge. An amp with a bridged load sees 1/2 the impedance, not double. Music isn't a constant amplitude sine, the average to peak ratio is significant. The amp can happily deliver short term transients without clipping but stay within its average power output.
@@EBMproductions1 it'll work just fine. The over temp protection won't activate on a normal signal when running 2 ohm, or 4 ohm BTL. The PSU and amp are happily capable of supplying the current and power needed for real world signals into a low Z load. Especially when considering a speaker isn't going to present as low an impedance load as a fixed value resistor due to the semi elliptical reactive nature of speaker Z/hz.
@@killcar5nbike2 okay cool cause over heating is my main concern with any amp and getting toasty on low ohm loads usually means it will die sooner and yeah i would like an amp that can handle 4ohms with 500-1000watts per channel.
@@EBMproductions1 we've been hammering one of these running 2.6 ohm on each channel. Even pushed so it's hitting the limiter the fan doesn't speed up. Runs pretty cool.
Thank you!!! Its exhausting trying to find the actual power output for some of these amps. I greatly appreciate you making this content.
I can’t find any information on these amps so this video was very useful.
Do you know what power it will do on bridge mode at 8ohms?
Now I really need to buy a radiator to test my amps.
Not sure if asked already.
If I set this amp to bridged with a 16ohm load from two speakers/transducers wired is series the amp will run at its best?
Apologies if I missed it, but what frequency was used for this test?
@@thedubwhisperer2157 IIRC I tested them at various frequencies up to a few hundred Hertz
@@killcar5nbike2 Thanks for your quick reply on this old post. Did you find much lowering of output as the frequency was reduced?
@@thedubwhisperer2157 it was pretty consistent
@@killcar5nbike2 Thank you. Across the board, from Behringer to Powersoft, the continuous rating appears to be between ten and twenty percent of the quoted burst-rated numbers.
I still love my iron-and-copper 34kg monsters that can actually output their quoted power, but my aging back does not!
@@thedubwhisperer2157 I prefer iron.
I worked on the old C audio SR707 and SR808 amps for someone 15 years ago. Those things were still working fine even though they were old back then. Don't know where they are now, bit if they've been serviced they will still be working now.
I'd imagine that when nice light amps came along, those big old heavy lumps got scraped. Which is a shame, as they were built to last.
I always go heavy iron transformer and big heatsink when I build. Can't be beat for reliability on a permanent install.
@killcar5nbike2 Would you know the bias voltage of the mosfets I just did a repair replaced the mosfets and pwm IC’s and apparently I have to test the bias voltage of the mosfets even though they are the same mosfet make and model they only difference would be the batch number cheers Rick
Class D don't have output stage bias. They use a dead time that's controlled by associated components around/in the control IC.
Whoever told you that is an arm chair technician.
@@killcar5nbike2 je trouve que les câbles pour haut-parleurs que vous utilisez ont une section trop petite pour les courants en jeux dans cette expérience . Quand je mesure des amplis en classe D, j'utilise un ATS2 avec filtre 0025 et des câbles ayant une section de 6mm2. il est préférable de les tester avec des sinus en burst pour trouver leurs puissance avant que le limiteur ne se mette en fonction ..
I find that the speaker cables you are using have too small a cross-section for the currents involved in this experiment. When I measure class D amps, I use an ATS2 with a 0025 filter and cables with a cross-section of 6mm2.Better impédance matching. It is better to test them with burst sinuses to find their power before the limiter kicks in.
Try yhe nx6000. Even though one channel is the same as an nx3000, it doesn't clip the same way at least when using one channel
I have this same amp for already two years in a half. It sounds good and hits bass nice. But the volume at half way it’s already limiting. I tried it at 4 ohms and 8 ohms . Still gets the limit light on. Full volume at 8 ohms stereo mode redlines but won’t shut down . It’s just crazy how the limit lights comes out so soon with out hurting the speaker or sounding loud.
All amplifiers has to be in 0 gain, the manual say that.
@@danielzaldivar4664 is zero the middle or where?
Thanks for the video, do you think it is reasonable to work with two channels at the same time at 2ohm with a 300rms load?
This one's running 2.6 ohm on each channel. If your load is only rated for 300 Watts then you need to keep the volume level low to stop it being over powered.
Can anybody explain why several heaters are not used in direct parallel connection, stupid transformer makes no sense then, as if its easier to find such transformer compared to heaters.
2kw heater has impedance about 24 ohm, old school electric oven is even better about 7kw. Transformer creates more problems and limits.
Because the heater is from my bedroom and the transformer is one I had laying around that just made the heater an ideal load impedance.
If I was doing lots of power tests on high power amps I'd make a proper load out of several heaters with series capacitors to cancel out the inductance to make the loads purely resistive.
@@killcar5nbike2 Pure resistivity has nothing to do with it, your current combination is also far from resistive, any loudspeaker is a reactive load.
Your transformer limits all measuring so much that it makes all conclusions pointless, unless you find a pure 5kw+ transformer with proper construction.
@@MrSookonn I'm well aware speakers are a reactive load. For quantifiable results over repeat tests you need a purely resistive load. The transformer is only a purely inductive load when there is no load on the secondary. The heater is still a very near resistive load and it is easy to measure the power being dissipated in the load as it would be if the transformer were not there.
I get quite a few comments on some of my various true power test videos by people who haven't watched my other videos who assume I don't know how to do x,y,z or know about a,b,c.
I design, modify and fix all manner of electronic items. Power testing amps is just something I do when I'm bored and fancy an easy tinker about.
@@killcar5nbike2 Overdriving a transformer creates short circuitry like conditions.
Your protection circuitry will be activated, possible damage to electronics.
@@MrSookonn the transformers voltage rating for saturation is at 50hz and with no secondary load whilst flux density is at it's highest.
Every octave increase in frequency increases saturation voltage by 6db. At 1khz that's 26db voltage that the transformer can take before saturation than at 50hz. The limiting factor is no longer core saturation but I2R dissipation in the windings.
so why is it a 8ohm rated amp if it does not like anything less than 16 ohm actually? also why does it have a bridging ability if it hates 4ohm cause we know 4=4ohm=8ohm load and most people bridge amps to run dual 18s and thus this amp will cook if you run it bridged so yeah...
It's rated 2 ohm per channel, or 4 ohm Bridge. An amp with a bridged load sees 1/2 the impedance, not double.
Music isn't a constant amplitude sine, the average to peak ratio is significant. The amp can happily deliver short term transients without clipping but stay within its average power output.
@@killcar5nbike2 i know the amp sees half the ohm load but would it survive if bridged cause based off of this it wont.
@@EBMproductions1 it'll work just fine. The over temp protection won't activate on a normal signal when running 2 ohm, or 4 ohm BTL. The PSU and amp are happily capable of supplying the current and power needed for real world signals into a low Z load.
Especially when considering a speaker isn't going to present as low an impedance load as a fixed value resistor due to the semi elliptical reactive nature of speaker Z/hz.
@@killcar5nbike2 okay cool cause over heating is my main concern with any amp and getting toasty on low ohm loads usually means it will die sooner and yeah i would like an amp that can handle 4ohms with 500-1000watts per channel.
@@EBMproductions1 we've been hammering one of these running 2.6 ohm on each channel. Even pushed so it's hitting the limiter the fan doesn't speed up. Runs pretty cool.
Todo lo mal que podria hacer, lo hizo, esta prueba no sirve para nada, para que otra marca trabaja? jajaja
More lies from Behringer.....