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Old 28th April 2008, 07:43 AM   #5001
AKSA is offline AKSA  Australia
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Carlos,

This praise for me and my amps is very nice, but it's absurd. Anyone with some knowledge and a lot of perseverance can build a better amp; engineering qualifications are not required, but it worries me that EEs continue to dominate the field, with their concern to THD, which below a certain level bears little relation to the quality of the sound.

Greg,

That's a VERY nice picture. Altium? Thank you.......

Cheers,

Hugh
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Old 28th April 2008, 08:04 AM   #5002
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Default Related that subject i think you are wrong


You are special as a very good designer... have method, good ears, intelligence.... i do not think that only beeing EE someone can do the job you can do.... maybe they worry too much about THD or other things.... we have Intermodulation too.... we had the low noise mania.... the high speed mania... the dinamic power mania... the direct coupling mania...now we have CCS, current sinks, mirror and different output topologies.

Well, this is "fashion" and will finish soon, i could see other fashions dictated by IHF (Institute of High Fidelity) that are dead now a days...so...

But i feel great to imagine that anyone can do.... this means, to myself, that i can have may own hopes to learn enougth to be so good as you are.

regards,

Carlos
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Old 28th April 2008, 08:04 AM   #5003
Nordic is offline Nordic  South Africa
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Yes, I simply installed them over the board so I have an online picture showing most components, and can be used to help members fault trace their boards...

We went trough many iterations of the boards some with no jumpers... but this one seems the best compromise... Like Carlos said, doublesided means double costs.. (well almost). If it was a double sided board with top layer traces, you would take no notice of it... I think haveing jumpers is even better than top layer traces as they can be further seperated from bottom layer..
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Old 28th April 2008, 08:17 AM   #5004
MRupp is offline MRupp  Germany
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Quote:
... with some knowledge and a lot of perseverance can build a better amp; engineering qualifications are not required, but it worries me that EEs continue to dominate the field, with their concern to THD, which below a certain level bears little relation to the quality of the sound.
Hehe Ö Iíve been long waiting to read a statement like this. In analogy to a famous saying I would state that HiFi is too serious to leave it just to the EEs That does not mean to say that there are no EEs with the perseverance and the right knowledge to build good sounding amps.
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Old 28th April 2008, 03:47 PM   #5005
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Default Are those components cheap or expensive in a comparison


of my local price, a small shop in my neigthborhood, with Internacional prices.

Resistance is 1 ohms and 3 watts.... 6 units for 1 USD.

Electrolitic condenser: 220uf/63 volts.... 6 units for 1 USD

Electrolitic condenser: 220uf/35 volts.... 10 units for 1 USD

Please folks...tell me some about those prices.

regards,

Carlos
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Old 28th April 2008, 04:21 PM   #5006
udailey is online now udailey  United States
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Carlos,
Those prices are excellent.
The cap prices are awesome. The resistor prices are a little less than normal.
Uriah
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Old 28th April 2008, 06:12 PM   #5007
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Default Good to know that...i will return to that shop to buy more parts


Thank you Uriah.

I have bougth 70 condensers...will buy more 100 units to stock.

regards,

Carlos
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Old 28th April 2008, 06:40 PM   #5008
Nordic is offline Nordic  South Africa
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yep 220u/63 caps in the US seem to start at about 11cents... goes up to alot more of course.... due to things like expected lifespan, temperature grade...etc. So that is a good price...I often use those hitanos... not the best, but definately not the worst...

We listened to some Precision this morning, finaly had some time to complete it and set up... had some issues at first... then found a resistor that was not soldered :P... reconnected all, powered on and then connected a speaker... dead silent, thought it was dead... powered off plugged in the handy ipod and powered on again... sweet music played immediatly... eventualy tested with DVD player... sounds great... Mains supply is a bit high today... (public holiday) so I did not play it too long though. Tommorrow I can work in peace (noise) when my wife is at work, to bias it properly.

Was a great relief to know the factory boards work.... but work carefully and systematically... over 200 solder spots per channel...
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Old 28th April 2008, 06:47 PM   #5009
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Default Re: Are those components cheap or expensive in a comparison

Quote:
Originally posted by destroyer X

of my local price, a small shop in my neigthborhood, with Internacional prices.

Resistance is 1 ohms and 3 watts.... 6 units for 1 USD.

Electrolitic condenser: 220uf/63 volts.... 6 units for 1 USD

Electrolitic condenser: 220uf/35 volts.... 10 units for 1 USD

Please folks...tell me some about those prices.

regards,

Carlos
Hi Carlos,

Here:
- 220uF/63V electrolytic: 9 pcs for 1 USD
- 220uF/35V electrolytic: 27 pcs for 1 USD
- 1r/2W metaloxide resistor: 20 pcs for 1USD
- 1r/5W wirewound resistor 8 pcs for 1 USD
(No 3W rated resistor available in the local shop.)
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Old 28th April 2008, 07:20 PM   #5010
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Default Very good prices Andy..thank you.


A relief for us that factory made a good job and the board is perfect alike your layout.

thank you Nordic...enjoy your nice work.

Congratulations once again.... this board... this baby is yours!

regards,

Carlos
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