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"BLACK WISDOM"
Pre-amp IC: OPA604AP £¨Can be replaced£©
Amplifier IC: LM4780TA
Output Power: 38W+38W (RMS)
Voltage: DC ¡À30V
Protect circuit: Relays Delay 5s£¬DC0.6V Trigger Protect
Input Interface: Signal Input L/R£¬DC power Input
Output Interface: Speaker Output L/R
Dual LED (Red/Blue) status indicator
30mm Aluminum volume knob
"BLACK WISDOM"
Pre-amp IC: OPA604AP £¨Can be replaced£©
Amplifier IC: LM4780TA
Output Power: 38W+38W (RMS)
Voltage: DC ¡À30V
Protect circuit: Relays Delay 5s£¬DC0.6V Trigger Protect
Input Interface: Signal Input L/R£¬DC power Input
Output Interface: Speaker Output L/R
Dual LED (Red/Blue) status indicator
30mm Aluminum volume knob
Attachments
re. up
Hi luka,
There are two threaded holes in the heat sink, Similarly, there are two holes on the shell(top), Linking them with two screws.
Hi luka,
There are two threaded holes in the heat sink, Similarly, there are two holes on the shell(top), Linking them with two screws.
Re. Speaker
Speaker,
Thank you for your evaluation!
Yes£¬i can do layout PCB. please Email servicee@chip-pcb.cn
Speaker,
Thank you for your evaluation!
Yes£¬i can do layout PCB. please Email servicee@chip-pcb.cn
'The Black Beast In A Box'
Here's mine done in only 3 days, I went mad at it wanting to get it done once my friend etched the boards for me. Just about everything is improved compared to my old amp, 2x TDA2005's or something like that. I love the sound so much I'm making another for my Wharedale Diamonds in the Summer.
I know it's not perfect - I'll work on the switch, but do bear in mind, I'm only 17 and designed it all myself with pretty poor tools - hand drills with blunt drills! etc, I don't quite think the pictures do it justice.
Here's mine done in only 3 days, I went mad at it wanting to get it done once my friend etched the boards for me. Just about everything is improved compared to my old amp, 2x TDA2005's or something like that. I love the sound so much I'm making another for my Wharedale Diamonds in the Summer.
I know it's not perfect - I'll work on the switch, but do bear in mind, I'm only 17 and designed it all myself with pretty poor tools - hand drills with blunt drills! etc, I don't quite think the pictures do it justice.
An externally hosted image should be here but it was not working when we last tested it.
Matt,
your amp looks a lot nicer than many projects i've seen that took 37 year olds 3 months to accomplish.
Well done, highly original looking amplifier.
your amp looks a lot nicer than many projects i've seen that took 37 year olds 3 months to accomplish.
Well done, highly original looking amplifier.
Thanks 🙂 It only cost me £5 too, I salvaged some nice Elna caps from something else, along with the stereo pot and heatsink cut in half - it was on long strip.
I noticed a very very faint 50hz hum from the speaker - only audable when pressing my ear right against the cone which remains with no input connected to the amp - anyone else have this problem? The hiss level is also just audable in silence around 30cm away at 1/4 volume, presumably this is around normal level for the chip?
I noticed a very very faint 50hz hum from the speaker - only audable when pressing my ear right against the cone which remains with no input connected to the amp - anyone else have this problem? The hiss level is also just audable in silence around 30cm away at 1/4 volume, presumably this is around normal level for the chip?
Yeah, not the norm I know but they were on offer along with some fully screened gold plugs, plus they match nicely and are perfectly capable.
The switch is useless at the moment too... I didn't think when I put it in that this was a duel rail design, so I'm thinking a small DPDT Relay with the coil energised from the single switch of a DC rail should work ok.
The switch is useless at the moment too... I didn't think when I put it in that this was a duel rail design, so I'm thinking a small DPDT Relay with the coil energised from the single switch of a DC rail should work ok.
My 2+1 ch amplifier
It has a selectable LPF too 😀
All circuits designed by me, built by my brother
It has a selectable LPF too 😀
All circuits designed by me, built by my brother
Amp5 diy
Amp5 tripath 100w mono amplifiers.
This is quite a amazing amplifer.
I have two off them in parallell mode. (mono).
Before I had electrocompaniet Aw100dmb.
2xamp5 are even better. And the price? hehe.
Diy rules!!!
Amp5 tripath 100w mono amplifiers.
This is quite a amazing amplifer.
I have two off them in parallell mode. (mono).
Before I had electrocompaniet Aw100dmb.
2xamp5 are even better. And the price? hehe.
Diy rules!!!
Pictures
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
