So,
It just happens that I do not have an amp (don't ask how I lost it) anymore and I really need one bad. As the next project in line is ~86dB sensitivity scanspeak 2way, I am looking for 50+ wpc design. The listening room is rather small ~20 sq meters(well furnished) and there's not enough room to fit more sensitive speakers - I obey the Hofmann's Iron Law... And it just happens that I have 18w/8545 pair, 15w/8531 quad seamlessly lying around and there a couple Troels designs that I am considering building.
The main constraint is the build complexity. I am not really an experienced diy guy, but I can construct things, solder, read circuits, measure, source parts.
I need a PCB. And I am looking for a well proven design that does not require much experimentation to make it run stable. Successfully built the dcb1.
What are my choices?
Second hand market is pretty much dead in my country. Also I consider the commercial audio devices to be insanely overpriced.
Mr Pass's designs need efficient speakers - 25watts ain't gonna work with ~86 db sensitivity speakers well or leave no headroom at all. The 50 watt F5V2 needs hard to come by jfets, and for the AB100 the world has run out of the output transistors.
Tubes?? Maybe some KT88 push pull could work... Point to point construction, designs are old, well tested and polished...?
Chip amps? Lm3886 Done Right might be tempting. Easy and cheap design, proabably not that good in reproduction satisfaction though as compared to class a constructions.
Any other class AB solid state amp that I might be not aware of? Going through all the solid state forums threads I've noticed that it is really hard to come by with PCBs for sale anywhere...
I am just looking for a relatively easy build with parts that can be sourced at the moment..
Or should I just sell those scan speaks, build myself some other small speaker pair that is more efficient (~91 db if that is even remotely possible) and build myself first watt m2x?
And of course, apologies if this is not the right forum...
It just happens that I do not have an amp (don't ask how I lost it) anymore and I really need one bad. As the next project in line is ~86dB sensitivity scanspeak 2way, I am looking for 50+ wpc design. The listening room is rather small ~20 sq meters(well furnished) and there's not enough room to fit more sensitive speakers - I obey the Hofmann's Iron Law... And it just happens that I have 18w/8545 pair, 15w/8531 quad seamlessly lying around and there a couple Troels designs that I am considering building.
The main constraint is the build complexity. I am not really an experienced diy guy, but I can construct things, solder, read circuits, measure, source parts.
I need a PCB. And I am looking for a well proven design that does not require much experimentation to make it run stable. Successfully built the dcb1.
What are my choices?
Second hand market is pretty much dead in my country. Also I consider the commercial audio devices to be insanely overpriced.
Mr Pass's designs need efficient speakers - 25watts ain't gonna work with ~86 db sensitivity speakers well or leave no headroom at all. The 50 watt F5V2 needs hard to come by jfets, and for the AB100 the world has run out of the output transistors.
Tubes?? Maybe some KT88 push pull could work... Point to point construction, designs are old, well tested and polished...?
Chip amps? Lm3886 Done Right might be tempting. Easy and cheap design, proabably not that good in reproduction satisfaction though as compared to class a constructions.
Any other class AB solid state amp that I might be not aware of? Going through all the solid state forums threads I've noticed that it is really hard to come by with PCBs for sale anywhere...
I am just looking for a relatively easy build with parts that can be sourced at the moment..
Or should I just sell those scan speaks, build myself some other small speaker pair that is more efficient (~91 db if that is even remotely possible) and build myself first watt m2x?
And of course, apologies if this is not the right forum...
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I usually find amps on the curb.
I always wondered who would lose them.
An enigma has been solved 😉 .
I always wondered who would lose them.
An enigma has been solved 😉 .
LM3886 has not been discontinued and the 3886DR is a very satisfying amp and IMO a better sounding amp than the P3A but the P3A does have a tad more power.
To my old ears, they are very comparable even if the P3A sounds more musical and relaxed, a bit less harsh than the LM3886.
But you are lucky if you can find a single LM3886. Long backorders and zero availability at all major suppliers right now.
It is not discontinued yet but other Texas class AB chip amps such as the LME49xxx have already disappeared.
Just a matter of time 🙁
But you are lucky if you can find a single LM3886. Long backorders and zero availability at all major suppliers right now.
It is not discontinued yet but other Texas class AB chip amps such as the LME49xxx have already disappeared.
Just a matter of time 🙁