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Chip Amps Amplifiers based on integrated circuits

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Old 30th May 2003, 02:45 PM   #21
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Talking Tannoys are now ok.

I didn't mention, but I brought my father's Tannoys home that night.
To see if I can "do something" about them.
They simply have a very muted treble, as they always had.
Well...
They had an 8 ohm resistor in series with the tweeter.
Yesterday, 5 minutes after playing with some resistors (without it sounds horrible) I've got to the conclusion it's not only that.
I bypassed the crossover completely and made one my way.
It's playing much better now, yesssss!
Dumb manufacturers!
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Old 30th May 2003, 04:01 PM   #22
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Quote:
Dumb manufacturers!
In defence of those 'dumb manufacturers' Carlos, please remember that they have to produce a loudspeaker that will sound reasonably good in most systems in most rooms! No wonder they land up with a compromise and can't get it as good as most home constructors.

Now, I wonder what loudspeakers they listen to at home? I bet it's not any of the models they sell
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Old 30th May 2003, 04:31 PM   #23
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Nuuk,

These loudspeakers are exactly 23 years old (1980).
I never liked their sound, and they have been connected to tens of different amps.
I understand what you mean, but in this case they never played well.
Yes, my father repaired hi-fi too, our house was always full of gear.
These particular speakers were an unfortunate project.
They sounded yesterday before I changed the crossover as they always sounded to me.
Now they are much better.
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Old 25th June 2003, 09:40 AM   #24
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Ok, just some final pictures.
One thing I've yet to do is putting some heatsinks between the chips and the bottom of the case.
Here it goes:
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Old 25th June 2003, 09:43 AM   #25
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Talking The front

With the blue led.
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Old 25th June 2003, 09:47 AM   #26
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Cool The back

Kimber 4PR as mains cable.
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Old 25th June 2003, 11:41 AM   #27
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Yippee - more pictures. may be we should think of putting a Gainclone gallery together sometime!

Carlos, I'm intigued! When you build hi-fi you do it in English! At least I doubt that the words for 'left' and 'right' are the same in Portuguese
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Old 25th June 2003, 01:10 PM   #28
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Quote:
Originally posted by Nuuk

Carlos, I'm intigued! When you build hi-fi you do it in English! At least I doubt that the words for 'left' and 'right' are the same in Portuguese

I'm very international, and I like that anyone who sees my creations will understand what's in there.
I remember when german amps had all the labels in german, I can't even write that, but you had to test to see where's the bass and treble pots.
And if the martians invade the earth they may come prepared to talk english.
If they find my PC Gainclone they will understand where's the left and right channel.
Nuuk, take a look at my preamp, there's a new thread here.
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Old 25th June 2003, 02:02 PM   #29
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How about a schematic here?? I dun think u need a camera for that~!...and you might want to try and lower the ambient light level...can't really see the cool blue lights...hehehe
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Old 25th June 2003, 02:32 PM   #30
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How about a schematic here?? I dun think u need a camera for that~!...and you might want to try and lower the ambient light level...can't really see the cool blue lights...hehehe
Is it dense around there?
You can't see the blue led on top of the power switch?
Ok, these photos were taken with a flash, in the kitchen.
Not ideal.
But without flash the pictures would have a green tone, because of the fluorescent lights.
Next time I'll use my tripod, and a professional light spot.
You wouldn't whant to discuss photography with me, or will you?
Ok, Canon T90, Tamron 35-80 SP F2.8-3.8, picture taken in macro mode, at F:22, 1/45s, TTL flash.
And the picture is much worst here than what I have in my pictures (the real ones, in the negative an the paper).
No schematic.
It's "based" on the Thorsten circuit.
There are no two equal Gainclones, you can't just ask for a schematic to everyone.
Please make a search on the forum and you'll find the schematics.
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