Brett said:
i've got one, but i can confirm that it is exactly the same as the QSC RMX 2450. ok, some components are different, but that does not affect the functioning of the device, only the cost
the QSC schematic set is complete, the behringer contains only one channel. so use the behringer for the correct numbering and the QSC for everything else.
Brett said:
From audio asylum link posted earlier:
"maybe it sounds the way it dose because it’s a cap coupled bridge amp…let’s just add up the clues…no center tap off the toroid (single 52 volt rail), the big caps +/- connect to the positive output post, and there is no signal path for bridge mode (in mono channel 2 runs as a current mirror), four power devices."
I can't quite remember how the topology works but it uses a single polarity supply and somehow utilises the storage caps as coupling also. Most modern amps are dual polarity, DC coupled, which I assume is preferable? That said, it measured very flat down to infrasonic frequencies so perhaps it isn't a big problem. I'd only be using it for subs, a good damping factor is nice though!
The 2500 does have a center tap. Because the rail voltages are switched on demand, symmetry of the rails cannot be guaranteed without it. With a normal class AB output stage, like the 500 or 1500, a center tap is NOT needed. One could be used if you like.
Without the center tap, the caps do provide AC coupling. But the coupling is inside the feedback loop so it doesn't cause a roll-off in the bass. The input coupling cap actually does this. If the output caps are small, it does affect the clipping behavior at low frequency. And it would do that center tap or no center tap.
Without the center tap, the caps do provide AC coupling. But the coupling is inside the feedback loop so it doesn't cause a roll-off in the bass. The input coupling cap actually does this. If the output caps are small, it does affect the clipping behavior at low frequency. And it would do that center tap or no center tap.
Hi,
Yes, and you can run a 'normal' output stage without connected centertap as well by the very same reasons as you mention for the flying rail topology.
There is no argue but EP1500 has AC coupled output stage and EP2500 has not. And as you say it does not matter as it is inside the feedback loop. In this case, available power in lower frequencies will depend on power supply capacitance regardless AC coupling or not.
Yes, and you can run a 'normal' output stage without connected centertap as well by the very same reasons as you mention for the flying rail topology.
There is no argue but EP1500 has AC coupled output stage and EP2500 has not. And as you say it does not matter as it is inside the feedback loop. In this case, available power in lower frequencies will depend on power supply capacitance regardless AC coupling or not.
I'm very much interested in the schematics of the A500. Can anyone please email it to me at jojod818@yahoo.com
Thanks!
Thanks!
A500 for a sweet price
Did you guys see this-
A Behringer A500 is normally <$200.
But if you want to you can spend $3500 for one. And its "discreet." Try to DIY that.
Linn Audio NH
And if that is too much the next amp down the page is the $158 Dayton APA 150 for $1950.
Did you guys see this-
A Behringer A500 is normally <$200.
But if you want to you can spend $3500 for one. And its "discreet." Try to DIY that.
Linn Audio NH
And if that is too much the next amp down the page is the $158 Dayton APA 150 for $1950.
hi all,I need schematic behringer ep1500 please send to may email at asuservice@ymail.com,with regards asuservice
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