I wonder what is different. After reading this I removed the protection circuit and powered up directly to the speakers. Both channels do exactly the same thing. A kind of sizzle sound for about a full second ending with a faint thump. My board matches the schematic in post #675 except for R5 is 51K and I have a blue LED in place of D7 which is giving me a measured 3V drop. The amp plays perfectly otherwise. I don't have anything in C8 or C16.
He does not hear anything because he has gone out to play footy with his mates and his wife always follows around turning off his gear.
To be clear.
Sorry,i said that i hear nothing.
I say again,i hear nothing,but i see that the cone of the woofer has been moved inside instantly with power-on,this movement isn't audible.
To be clear.
Sorry,i said that i hear nothing.
I say again,i hear nothing,but i see that the cone of the woofer has been moved inside instantly with power-on,this movement isn't audible.
Yeah, mine is more in the tweeters. It almost sounds like oscillation but it is only for a second then all is quiet. It won't be an issue since I will use a protect circuit anyway. I just think it is important when testing to report all things abnormal.
Blessings, Terry
Hi all, I was about to hit the order button a couple of weeks ago but the updates were coming thick and fast!!!
Anyway if we can confirm that the PCB 's are now finalised I'm happy to place an order. I'll be building the on board filter one. As I say, if it's confirmed as finished.....
I could order both.... I did get a price from 1 PCB place and aside from the freight the board cost was under 10 dollars, that was for 2oz copper as well.
Are the boards ready to go????
Dave
Sent from my D5833 using Tapatalk
Anyway if we can confirm that the PCB 's are now finalised I'm happy to place an order. I'll be building the on board filter one. As I say, if it's confirmed as finished.....
I could order both.... I did get a price from 1 PCB place and aside from the freight the board cost was under 10 dollars, that was for 2oz copper as well.
Are the boards ready to go????
Dave
Sent from my D5833 using Tapatalk
PCBWay....... google, very good products, good prices.
PCB Prototype - PCB Prototype the Easy Way - PCBWay
Hugh
PCB Prototype - PCB Prototype the Easy Way - PCBWay
Hugh
I am actually getting a quote from them now and did not bother to check the 2oz prices as it was exorbitant on another site ($20 went to $50 job).
Thanks
Thanks
i did check the link, as soon as i select 2oz and the actual size of pcb, the price jumps from 10$ to 34$ +shipping 41$. Am i missing something?
reg
prasi
reg
prasi
They want $25 for shipping to US. So minimum price is $35 for a $10 order. They are fast though. Ok so how are folks getting 2oz copper for $10?
Shipping to India appears to be less ?
Shipping to India appears to be less ?
same for 1oz is 51$
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Oh, thanks for the tip - funny it wasn't an option before but now seems it is. $14 vs $21 so $7 off...
I am sticking with 1oz so order is now $10+$14=$24, very reasonable price for qnty 10 custom 100mm x 100mm 2-sided boards.
This is for the allFET Circlotron btw.
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Its very desirable for a power amplifier, but to be honest, I usually order 1oz during the prototyping stages due to the cost benefit. Once in a while you land on a special design that's a "keeper" and these times I reorder the boards (usually with a few tweaks here and there) in 2oz and build it up into a nice case.
PCBWay have very good online service too; I deal with Angel Yu and her English is perfect and she seems to have the ear of all the technical people too. If there is a problem on the pcb, such as a track too close to a pin or pad, they came back to you and ask you to check.
This is fantastic service, because unlike the broker companies who farm out their orders to other companies, THEIR company does the manufacturing and they want their product to work well for the customer. I suspect that because of economies of scale this is the reason their prices are lower, and they can move around the price of their products to offer special prices from time to time.
I have three pcbs under manufacture with PCBWay right now; I have had very good service for about three years now. Can't speak any more highly of them.
Ciao,
Hugh
This is fantastic service, because unlike the broker companies who farm out their orders to other companies, THEIR company does the manufacturing and they want their product to work well for the customer. I suspect that because of economies of scale this is the reason their prices are lower, and they can move around the price of their products to offer special prices from time to time.
I have three pcbs under manufacture with PCBWay right now; I have had very good service for about three years now. Can't speak any more highly of them.
Ciao,
Hugh
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Some questions regarding some parts C4=2200µF/16V can I use 6V3 ?
Q1=KSA992 any other usable here?
Q1=KSA992 any other usable here?