I'm completely focused on hybrids now.
Defining a hybrid as mixed era technologies such as valve pre with class a,ab or d semiconductor output.
Not really sure what forum to use.
I tried splitting up the amp in stages for posts but that is even more confusing.
Defining a hybrid as mixed era technologies such as valve pre with class a,ab or d semiconductor output.
Not really sure what forum to use.
I tried splitting up the amp in stages for posts but that is even more confusing.
You're right, it's doesn't fit. Did you see any other hybrids posted anywhere?
This thread might have to move to "Forum Problems"
This thread might have to move to "Forum Problems"
You will occasionally see some mention of hybrid systems in the Headphones and the Valve forums but it's not well supported here anymore these days - if you use the above 'Search' function, there were all sorts of hybrid design amps quite popular around 10 -15 years ago that might be useful to you
There's a variation of the Aikido + ClassA fet output stage still current here and worth a good look - the OP (kalsor) is a bit quiet at the moment but the project is still very much alive
There's a variation of the Aikido + ClassA fet output stage still current here and worth a good look - the OP (kalsor) is a bit quiet at the moment but the project is still very much alive
yes that's sounds correct , I've been working on them (hybrids) on and off for about 10 years.
starting to really pay off now have been taking a diy valve-tpa3118 on trips and getting opinions.
Speaking for myself, I cannot hardly believe how great it sounds.
I started out as a technician at a McIntosh Pioneer Marantz SAE Sansui etc. service station.
So have heard it all.
cheers
starting to really pay off now have been taking a diy valve-tpa3118 on trips and getting opinions.
Speaking for myself, I cannot hardly believe how great it sounds.
I started out as a technician at a McIntosh Pioneer Marantz SAE Sansui etc. service station.
So have heard it all.
cheers
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When I settled for a >95dB FAST system (Xover 150Hz), have more flexibility with amp choices, speakers and room acoustics - got fed up with replacing 845 valves so ...
It's strange how this site, in general, has become quite polarised about specific designs and dogma rather than a more universal approach for diy participants in recent years
In the world of headphone amps, it's an entirely different story where many of the 'gurus' encourage 'outside-the-square' thinking and hybrid designs have always been well received
It's strange how this site, in general, has become quite polarised about specific designs and dogma rather than a more universal approach for diy participants in recent years
In the world of headphone amps, it's an entirely different story where many of the 'gurus' encourage 'outside-the-square' thinking and hybrid designs have always been well received
Well have done some searching and tube pre with tpa3116 (hybrid) looks to be norm in hifi diy.
Same obsveration from many others on the audio quality.
Same obsveration from many others on the audio quality.
Ah, that miniature 3116 class D package - did you use one of the Marsh pcb? Had a brief look at that big thread and amazed at all the cheap china packages
Is there a way to use a bridged or balanced version for a higher power combination say for a 15" bass driver (>100W rms - 8R)?
What valve cct did you use?
Is there a way to use a bridged or balanced version for a higher power combination say for a 15" bass driver (>100W rms - 8R)?
What valve cct did you use?
Yes that part is a lot of fun, and that is what its all about. I'm using it in PBTL mode and claiming 35 watts rms into 6-8 ohm. 50 watt four ohm.
For me its the 3116-8 TI part for this power level and the IR2092 for higher levels.
attached here is 'as built' schematic. Its good for hifi or music inst. Note the tone stack is a 'tilt' not a muff type.
right now adding a compressor/limiter with PIC dsPic33 and accutronics digital reverb module. Needed a PIC for some power-up/down housekeeping anyway.
Trying to make the boards dual purpose hifi or instrument.
I'm a bit surprised you can get away with the +24 & -24 volt supplies without suffering problems - it's certainly pretty simple
I know that it's normal practice to alter the input impedances to gain stages for tone adjustment on guitar amps but adding a buffer would be more in line with 'hifi use' on the input to the 3116 amp - assume it doesn't apply here?
A friend of mine builds rather good guitar amps and many of the 'hifi golden rules' are ignored as the 'job description' and 'mind set' is very different - I've got used to the idea that instrument gross distortion at the recording stage is a musician's creativity but on the reproduction end, much effort is spent trying to faithfully recreate this distortion precisely with very low distortion systems - two worlds really
I know that it's normal practice to alter the input impedances to gain stages for tone adjustment on guitar amps but adding a buffer would be more in line with 'hifi use' on the input to the 3116 amp - assume it doesn't apply here?
A friend of mine builds rather good guitar amps and many of the 'hifi golden rules' are ignored as the 'job description' and 'mind set' is very different - I've got used to the idea that instrument gross distortion at the recording stage is a musician's creativity but on the reproduction end, much effort is spent trying to faithfully recreate this distortion precisely with very low distortion systems - two worlds really
It works perfectly as low distortion hifi, inst clean or inst dirty.
Required reading on how to alter the personality in this book.
(cover)
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Attachments
Thanks for that - will have a look for a copy -
I'm not very accomplished in electronics but trying to focus more on the amp/speaker/room acoustic end where the 40 <-> 60% of the total sound is organised (or not!), as they say
One of the more controversial topics going around here in the local 'audiophile' group is that many, if not most, of us don't like to listen to a flat freq response system at home even by using good quality dsp units - behind a board/desk in a studio it's necessary, no problem, but not at home
It a controversial subject that seems to bring out the 'agro' in a lot of people, particularly the 'guru' people that seem to hold packaged opinions so firmly - Strange world, eh!
I'm not very accomplished in electronics but trying to focus more on the amp/speaker/room acoustic end where the 40 <-> 60% of the total sound is organised (or not!), as they say
One of the more controversial topics going around here in the local 'audiophile' group is that many, if not most, of us don't like to listen to a flat freq response system at home even by using good quality dsp units - behind a board/desk in a studio it's necessary, no problem, but not at home
It a controversial subject that seems to bring out the 'agro' in a lot of people, particularly the 'guru' people that seem to hold packaged opinions so firmly - Strange world, eh!
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