Today I came across this interesting amplifier:
https://www.aliexpress.com/item/400...86b394a754b43bafe79f88a0c5a18&ck=in_edm_other
Does anyone have any experience with it? Is it worth buying?
https://www.aliexpress.com/item/400...86b394a754b43bafe79f88a0c5a18&ck=in_edm_other
Does anyone have any experience with it? Is it worth buying?
The link mentions adding heat sinking though it also looks a little bit like word salad.
"5532 dual op amp output, ant chews bones,"
"5532 dual op amp output, ant chews bones,"
Here's the original article...
https://www.physicsforums.com/attachments/douglas_self_elektor_amp5532_compressed-pdf.254881/
https://www.physicsforums.com/attachments/douglas_self_elektor_amp5532_compressed-pdf.254881/
Spreading the heat that much one would have to calculate if a heatsink is needed. Maybe good ventilation would suffice. Jan Meier did this before although I'm not sure this is the best way to go nowadays. Id rather built something like "the wire" which has been built here or a ~ BPA-200 with LM1875 chips.
Jan Meier power amp with LMA6172
Jan Meier power amp with LMA6172
Too bad they have resistors sticking up over the top of the op amps. For $17.97 I admit I would give it a try though.
Yeah. Can be fun. If I would know that the layout is perfect, I might give it a try also.
Tempting to use OPA1656 or similar but the layout might not be up for it.
I'd use a unity gain stable opamp and use it as buffer/low-gain-amp for compression drivers.
Tempting to use OPA1656 or similar but the layout might not be up for it.
I'd use a unity gain stable opamp and use it as buffer/low-gain-amp for compression drivers.
Found it : https://worldradiohistory.com/UK/Elektor/10s/Elektor-2010-11.pdf
Do you think we could use opa1656 instead of ne5532 ?
Do you think we could use opa1656 instead of ne5532 ?
Looks as if they just parallel the lot. 24 for each channel.
If that is the case, you could theoretically make a bridge amp from both halves but will need an inverter in front to drive the second half and eventually modify the board a little.
Using OPA1656 or the cheaper OPA1692 you could get quite a high max. current figure but I always doubt if its lots of work to make them play that well together. Definitely easier and cheaper to go out and buy a composite amp from Neurochrome or so.
If I wasn´t drowning in projects that want to be finished I´d make a PCB for maybe 5-8 OPA1656 each channel for some high-sensitivity drivers.
Regarding the heatplate: there is a plethora of thermal pads nowadays to be had. Used them at work in thicknesses up to couple of [mm] and then placing that on an aluminium plate.
I didn't scratch-up 5532 specs; for the similar-market OPA1656's specs I figured 11.78 Watts which is close-enough.
The half-Watt dissipation per chip may be tolerable in a DIP-8 (the '1656 does not come in a serious package); may not survive 48 hours at full sine output, but will be fine with lightly clipped speech/music.
IAC, someone else can solder this beast up.