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18th Nov 2020, 9:57 am | #1 |
Dekatron
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 5,271
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McIntosh valve amplifier manufacture.
This appeared in my youtube recommended list the other day. The 'how its made' style programme all about McIntosh valve amps which are still made:
https://youtu.be/2HgS6gvokEI
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Kevin |
18th Nov 2020, 10:18 am | #2 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,982
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Re: McIntosh valve amplifier manufacture.
McIntosh are a major audio electronics manufacturing company, and have been going since Adam was a lad. Beautifully built and with a characteristic appearance. And some of it is punishingly new-car level expensive.
Thanks for the YouTube link! The unit they are building, the 275, is a mere price baby at £7k. Craig Last edited by Craig Sawyers; 18th Nov 2020 at 10:25 am. |
18th Nov 2020, 12:10 pm | #3 |
Heptode
Join Date: May 2003
Location: Devizes, Wiltshire, UK.
Posts: 650
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Re: McIntosh valve amplifier manufacture.
I see that they have simplified the manufacture and reduced the complexity of the 275 output transformer when compared with the MC240 type which I was asked to rewind a couple of years ago. Also it is no longer on C-Cores.
I would rather have the MC240 with no circuit boards!!! Mike...
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Mike Barker. |
18th Nov 2020, 2:38 pm | #4 |
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Re: McIntosh valve amplifier manufacture.
Interesting video, well made, the LEDs are not blue and I enjoyed the transformer laminating machine. £7k though? At least the IEC connector is the right way up (ground down). I do wonder if the meter is real watts or volts assuming a resistive load.
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18th Nov 2020, 7:17 pm | #5 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,871
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Re: McIntosh valve amplifier manufacture.
Ooh, wow. How do they do the special heaters in the valves which make them glow green?
All mine are just the old-school reddy-orange. The speaker terminals are in a non-magnetic material "which is important because magnetic ones would react to the current and cause distortion" I suppose non-magnetic materials for the transformers would price them out of the market ? Sorry, but the twaddle factor is too high to watch further. David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
18th Nov 2020, 7:17 pm | #6 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,982
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Re: McIntosh valve amplifier manufacture.
There are amps in the McIntosh range that make £7k look cheap.
For example this beast https://www.dbhifi.co.uk/product/mcintosh-mc2kw/ . Note the £49,500 is for one channel - so the thick end of £100k for a stereo amp. Craig |
18th Nov 2020, 8:42 pm | #7 |
Octode
Join Date: Jan 2007
Location: Dorridge, West Midlands, UK.
Posts: 1,481
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Re: McIntosh valve amplifier manufacture.
Slightly surprised on a corporate video at the wonky tube near the start followed by a panel covered in fingerprints, interesting seeing how they are made but best with the sound turned down.
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Chris Wood BVWS Member |
18th Nov 2020, 11:47 pm | #8 | |
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Re: McIntosh valve amplifier manufacture.
Quote:
Joe |
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20th Nov 2020, 2:39 pm | #9 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
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Re: McIntosh valve amplifier manufacture.
I guess the non-magnetic speaker connectors also allow the pre-amp 'tubes' to be placed right next to the power output ones. I have to agree with the dislike of using a PCB for a valve amplifier and particularly for the power output valves, still, it is good to see some manufacturing that is not in the far east.
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