Yes, just link the unused opto out and leave the second set of misters off. 🙂
My first set of monobloc amps. I must say it does make layout inside the case WAY easier. I don't have them running yet, but I also think they will run cooler.
Been doing this Audio sillyness since 1967 ..Have Never Ever perceived the need or even seen the point of a 'speaker' protector.
Too much like wearing a double condom imo.. 🤣
You people are 'Roadies' for a touring Rock Band... where on stage exuberance can risk blowing out a H Frequency driver coil ??
Too much like wearing a double condom imo.. 🤣
You people are 'Roadies' for a touring Rock Band... where on stage exuberance can risk blowing out a H Frequency driver coil ??
You made this comment a few months ago. I disagree with you and so do most builders here on DIY. If you are so against a simple speaker protection circuit, please start another thread and discuss it, but don’t pollute this one.
Hi Andrew!
What is the purpose of the: "latching" posibillity on the board?
And how or why use it?
Thanks, Ed
What is the purpose of the: "latching" posibillity on the board?
And how or why use it?
Thanks, Ed
It’s an option with the link. Some designers prefer the protection to latch so the amp has to be powered down and then back on again. If you provide an overcurrent trip input, it’s a good idea to latch the protection circuit. This gives you an opportunity to check for speaker cabling shorts etc.
For DC offset, normally you don’t want it to latch, but to reconnect the speaker if the offset goes away. For example, if an amp clips, it often causes a DC offset. You don’t want the protection to latch in that case.
For DC offset, normally you don’t want it to latch, but to reconnect the speaker if the offset goes away. For example, if an amp clips, it often causes a DC offset. You don’t want the protection to latch in that case.
Hi Bonsai,
Eventually I completed the parts and did put the board together. Testing the board under the conditions you showed in the here enclosed drawing I get rather different V-readings from yours.
Voltages on pins 6, 7 and 8 ( UPC1237 ) read according to the drawing.
What can be the reason of the big differences on pins 1, 2, and 4? Please see attachment.
Used mosfets: BUK954R8-60E.
Eventually I completed the parts and did put the board together. Testing the board under the conditions you showed in the here enclosed drawing I get rather different V-readings from yours.
Voltages on pins 6, 7 and 8 ( UPC1237 ) read according to the drawing.
What can be the reason of the big differences on pins 1, 2, and 4? Please see attachment.
Hello Ed, your voltages are within range on pins 1 and 2. Pin 4 looks a bit high.
What is the secondary voltage of your transformer?
What is the secondary voltage of your transformer?
Hi Bonsai!
For this testing I used a lab-ps on exactly 55Volts, DC.
So not built in in the amp.
From where you got TLP191B?
I see that is out of stock everywhere,same for vom1271t
I see that is out of stock everywhere,same for vom1271t
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Thanks,probably in the past...
You didn't connect the A.C detection,C2 not charged.
You didn't connect amplifier out,C5,6 not charged.
That's why you seen different voltages.
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Little late reply BTW I purchased it for Rs 30 from Lamington road, Mumbai from RK electronics, hope its still available