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Amplifiers and cost constraints.
Amplifiers and cost constraints.
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Old 19th February 2013, 02:34 PM   #11
JMFahey is offline JMFahey  Argentina
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Originally Posted by regiregi22 View Post
Aren't you guys able to assemble a simple gainclone in one day, let's say, 12 hours of hard work?
I think that the deciding factor would be enclosure workmanship, it can range from already factory made to scratch work from raw metals.

I you already have the case (let's say a Modushop one), soldering components to boards is no more than 1-2 hours, then drill all proper holes in the case, another 1-2 hours, and how much do you need to cable two dozens of wires?
Agree,but the actual assembly time (what you are basically referring to) is only a small part of the job, as defined by the OP.

Remember he states 2 contradicting requisites:

1) on post #3 he says
Let's assume we have been given 150 to buy the components and parts and hand in 1 day later a power amplifier, a finished product ready to work.
The only way to do this is to drive downtown, buy a full kit which includes everything, including machined and finished cabinet and chassis, silkscreened panels, etc.
This alone takes 2 to 4 hours.
Then you go home and, say, in between 4 and 8 hours you have your amp ready, depending on complexity.
A simple no frills preamp, Chipamp and simple classic PSU will be easiest/fastest .

but, on post #1 he asked for:

the unit must be suitable for small volume production (10-12 units per day)
I beg your pardon?

Well, now we are getting into commercial production, and costs start to be the main stumbling block.

a) As I said before, an average person can build , say, at most 2 of those a day (forget automated assembly for such small amounts) so consider on hiring 4 people.
Did you consider that in your cost scheme?

b) you are talking about 150 per amp, meaning
12 x 150 per day=1800
20 x 1800 a month=36000 <-- just on raw parts.

Add to that 5 salaries : 4 builders + 1 "do everything" person, from answering the phone/mail to checking that they actually work to receiving parts to going to the Bank to making coffee to ...... you name it.

Add shop rent + light + gas + phone + taxes + insurance + accountant + "everything else".

You'll easily need 60000 a Month cash flow, meaning that to start such a Business you need some guaranteed 360000 Capital or Bank credit = 6Months operation.
You will not need them "all at once", but they must be available within that timeframe, and maybe you can start with just 150000 on hand.

3) Retail (Joe Buyer out there) price will be around 4X the raw parts cost or 2 X production cost (factor in those salaries/rent/taxes/etc.) as a very low starting point.
The retailer alone will make at least 30% if the retail price or he will not carry your brand, you'd be happy to earn 10% to 15% of that retail price.

Are you sure you will sell *guaranteed* 12x20=240 600 amplifiers a Month , meaning 2880 amplifiers a Year?

Any less and ends will not meet.
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