John Curl's Blowtorch preamplifier part II - Page 3228 - diyAudio
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Old 6th January 2013, 03:02 PM   #32271
gk7 is offline gk7
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Did not know you make speakers too. Whats their name and were are they sold ?
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Old 6th January 2013, 03:32 PM   #32272
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"Retired": Never to have to sell anything any more.
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Old 6th January 2013, 03:49 PM   #32273
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Quote:
Originally Posted by Esperado View Post
Did he forgot to "voice" them, or did he lose his rare talent to make believe fairy tales ?
I'm not familiar with the current versions, but I've heard a lot of Wilson speakers over the years. They had this in common: VERY sensitive to setup. Some rooms are going to be tougher than others, some will be impossible.

And FWIW, I've heard excellent MTMs. Heard bad ones, too. It's a tool.
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Old 6th January 2013, 04:24 PM   #32274
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I have always loved Wilson Audio Maxx.
Click the image to open in full size.
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Old 6th January 2013, 04:27 PM   #32275
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Quote:
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ISome rooms are going to be tougher than others, some will be impossible.
Thanks, that's correlate what i thought: i suppose they only sound flat in very damped rooms.
After to had tried near everything, i'm dedicated to two ways enclosures, with circular spherical waves horns.
With the price of the top WATT, you can build your own listening room, with sub woofer in the floor, your own top of the top enclosures and buy all the stuff to play music into, digital filters, killing amps etc...etc...
But, "Retired": never able to buy anything any more :-)
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Old 6th January 2013, 05:12 PM   #32276
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PMA it is interesting that you have the Wilson Maxx's. We all need a reference, I am listening to WATT's at this moment. Probably all that I will ever be able to afford, but I am happy enough.
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Old 6th January 2013, 05:28 PM   #32277
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Not that I have it, a colleague of mine has had it in his studio. Anyway, we have spent more than a year of evaluation of amplifiers and preamplifiers thru WA Maxx. Great speaker for this purpose, indeed.
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Old 6th January 2013, 06:37 PM   #32278
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I found the WATT's, especially the early ones a true test of amps. For preamps, etc, I usually use the STAX Lambda with direct tube drive.
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Old 6th January 2013, 09:08 PM   #32279
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It is always surprising that people, especially those who make DIY, think that making an 'advanced' audio product is quick and easy. Therefore, any component over 1K or so MUST be a rip off. It is not usually true. Expenses increase when making a commercial product that DIYers don't have, which often reduces the economy by increased production numbers to almost a balance, between extra help, office space, insurance, etc, and necessary discounts given to audio dealers, so they can sell your product in reasonable numbers.
If and when you find the 'magic chip' that does just everything virtually perfectly, Parasound would love to use it in future products.
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Old 7th January 2013, 03:21 AM   #32280
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When it came to the CTC Blowtorch, we built every one at home, either Bob's home in Houston or my apartment in Berkeley. All of the electronics was built in the extra bedroom of my apartment in Berkeley, with some part time techs helping me clean, stuff and solder the boards. I had to procure parts, organize them so that they could be relatively easily located, and to select and match parts that had to be matched for best performance. I always worked along with the techs, guiding them and finding parts for them. Then when a few boards were assembled, I had to personally check each one out with instruments to make sure that the distortion, DC offset, etc was within tolerance. For a few years, I packed the tested boards, usually 2-5 sets at a time, to Houston, where Bob Crump took over. He independently ordered the custom enclosures, each set individualized for the customer, got them finished and etched, and then stuffed with the pre-tested boards from me. Bob acquired all the Pots, switches, connectors, cable, hardware for final assembly. We only used SN62 silver bearing solder, finding it to work well, at a reasonable price.
Then once made and tested to show that each preamp was working right, it was 'broken-in' for about 30 days before shipment. Bob had his garage rigged for this.
A custom travel case was made with foam enclosing the individual chassis to make it easily transportable. We usually used the original cardboard case that came with the travel cases, to protect them from shipping.
In all honesty, I don't know how we could have saved any added money in making this product, without compromising its 'integrity' or ripping off our employees and ourselves. We have to live too! Yet, we decided not to make any more than about 40+ units, because we would have had to go to dealers in order to expand our customer base, and we would then have to charge, perhaps $20,000, without a phono preamp, to give the dealers their standard mark-up of 40%. It just was not worth it, because it became boring anyway, building the same thing, over and over, and it was a lot of work, more than the 'ideal' put forward here. Fortunately, before Bob Crump got sick and ultimately passed away, unexpectedly, we were winding down the operation. If I had invested in another run of boards, etc, I would have been out many thousands of dollars.
This is how it is done, folks! No big profits, a lot of hassle, and our biggest reward is having one for ourselves to use, and to have others appreciate it, if they use it.
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