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Old 11th September 2007, 06:52 PM   #61
hags is offline hags  United States
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Quote:
Originally posted by JensRasmussen
Hello,

IMHO someone should take control and provide an offer, either of the original board from the first GB or on an updated version.....

Mind you, there is a lot of work getting a layout to come together and then the thing needs to be tested....

A seperated input and output stage holds some benefits, but I like to keep things tight in my layouts, so I always prefered the single board layout for the 6 and 10 transistor versions.

I don't really think the size of heatsink is a problem, all you need is a 30 cm long HS. IMO you will need a HS this size anyway if you want to use the full potential of the amp..

Happy GB!
\Jens
I think tryonziess has taken control and made things easier for everyone. I like his decision and look forward to the boards.
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Old 11th September 2007, 07:59 PM   #62
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Default Jens Rasmussen Leach clone group buy

Quote:
Originally posted by hags


I'm cool, but, this was a group buy for an existing design and board. There are other forums for discussions on what should and shouldn't be done to this design. That was my point.
If we are purchasing the boards as shown and designed on http://delta-audio.com/Leach-Clone.htm then I'm in.
That's why I'm interested, I'm not interested in a discussion on or purchase of a redesign.
Things can and usually do get way out of hand and turn into something else entirely when going down this road.
I'm eager to build this amp, not talk about what I'd like to do to the circuit.
Let's keep it simple and straight forward. That's why I seconded the idea of contacting a production house that has already made boards of this design. Let's be consistent and stick to what works with predictable results, at least with regard to a "group buy".

This is pretty much my case too.
Still interested on ten 10-device boards (pending final cost).
Cheers!
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Old 11th September 2007, 08:03 PM   #63
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Default Re: This group buy

Quote:
Originally posted by tryonziess
...
I have another quote coming from a Advanced circuits for the original 10 transistor version. I am probably going to order 75 boards and pay in advance. Then if anyone wants the board this way feel free to purchase them at my cost plus shipping. The quote as it stands is for .090 board, 3 oz. copper, green color, with silkscreen, and soldermask, with standard pad finish.
...
Tad
Do you have an updated quote you can share with the group at this point?
Thanks again for heading this effort.
Cheers!
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Old 11th September 2007, 09:23 PM   #64
pchw is offline pchw  United States
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I will be interested in a couple boards.

Thanks,
__________________
- Fred -
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Old 11th September 2007, 09:30 PM   #65
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Sorry to cause any trouble. When Tad asked for improvement suggestions the tweaker in me came out. A few others chimed in, too.

I'm happy with a 10 transistor version as Jens designed, thanks Tad.
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Old 12th September 2007, 01:22 AM   #66
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bob,

no point in saying sorry. in fact, it's people like you, jens, andrewt and countless others' suggestions that made this project successful. and
if there's anyone guilty on this show, that should be me.

i only said it because hags was saying he's not going to join the group buy, and we need numbers on this buy. furthermore, the way he said it was enticing others to do the same. this is what i was trying to stop.


hags,

as i mentioned, i ask you to keep your cool because nothing is final yet. you have said your piece several times already --- that you want it to be the same as the original. that's ok. we like it that way too...

however, please remember that this project was build upon countless other's suggestions. and just because it's completed, that doesn't mean that people can't suggest further improvements. and you said it yourself, this is a "group" buy. do not discount the others just because they have have something to say...

sorry if i hurt your feelings. however, please understand the reason why i posted my previous message.



with that said... back to the GB!
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Old 12th September 2007, 11:28 AM   #67
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Default Update

Advanced Circuits has quoted 14.71 U.S. for each board quantity of 100 with 2 oz. copper and leaded solder pads in .090 thickness, green, soldermask both sides and silkscreen. I have requested a quote in 3 oz. copper which i should get this morning.
I have a few other production houses still to answer my email for quotes. Let me know your views on this board. Thanks tad
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Old 12th September 2007, 05:05 PM   #68
cgrums is offline cgrums  United States
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I'm in for at least 4 boards
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Old 12th September 2007, 05:12 PM   #69
hags is offline hags  United States
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Default Re: Update

Quote:
Originally posted by tryonziess
Advanced Circuits has quoted 14.71 U.S. for each board quantity of 100 with 2 oz. copper and leaded solder pads in .090 thickness, green, soldermask both sides and silkscreen. I have requested a quote in 3 oz. copper which i should get this morning.
I have a few other production houses still to answer my email for quotes. Let me know your views on this board. Thanks tad

Definitely interested in 4 boards. I would like to see what the qoute is on the 3 oz copper.
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Old 12th September 2007, 05:55 PM   #70
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Default Latest quote

The quote i recieved this morning on the board with 3 oZ. copper has raised the price to almost 19.00 U.S. I do not think the extra 1 oz is worth the 5 dollar extra price. Let me know about this I am not super knowledgeable about what would or would not be sufficient copper weight.
To get the 14.71 price there is a 4 week lead time. I am not in too big of a hurry. It would take that long to sort out logistics. This thing is going good so far. Thanks Tad
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