| Author |
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julian@cacr.caltech.edu
Guest
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 Posted:
Thu Dec 23, 2004 10:27 pm Post subject:
Dynaco Mark VI |
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I just picked up a pair of Dynaco Mark VI monoblock amplifiers which
were being thrown in the dumpster. All tubes are intact except one of
the 8417s, whose glass is cracked. One amp has its faceplate and meter
missing. The other's meter glass is cracked. Apart from that, both amps
look in good condition. And they weigh a ton!
Are these worth restoring? Are the 8417 tubes hard to find?
Julian
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scottp
Guest
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| Posted:
Thu Dec 23, 2004 10:42 pm Post subject:
Re: Dynaco Mark VI |
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I think they are worth restoring I have a pair that have
been converted to run 6550s. 6550s are easier to find
than the 8417s.
Scott
julian@cacr.caltech.edu wrote:
| Quote: | I just picked up a pair of Dynaco Mark VI monoblock amplifiers which
were being thrown in the dumpster. All tubes are intact except one of
the 8417s, whose glass is cracked. One amp has its faceplate and meter
missing. The other's meter glass is cracked. Apart from that, both amps
look in good condition. And they weigh a ton!
Are these worth restoring? Are the 8417 tubes hard to find?
Julian
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François Yves Le Gal
Guest
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| Posted:
Fri Dec 24, 2004 12:01 am Post subject:
Re: Dynaco Mark VI |
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On 23 Dec 2004 09:27:25 -0800, "julian@cacr.caltech.edu"
<julian@cacr.caltech.edu> wrote:
| Quote: | Are these worth restoring?
|
Are you kidding? The answer is a resounding YES.
They are quite a rare beast - less than a couple thousands have been
manufactured in the late '70s, using a classic Dyna design with excellent
iron. Thus they are very much worth a careful restoration.
| Quote: | Are the 8417 tubes hard to find?
|
They've been long out of production, but you can find some GE's for around
USD 90,00 per matched pair.
The Philips/Sylvania versions are more rugged, last longer in most amps, but
are quite difficult to find at decent prices.
Check for instance http://www.kcanostubes.com/index.html#8417
You may also consider modifying the MK VI in order to accept more widely
available tubes such as 6550's or KT90's. |
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scottp
Guest
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| Posted:
Fri Dec 24, 2004 12:17 am Post subject:
Re: Dynaco Mark VI |
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Nope. I'm attached to this
pair of amps, they were my
brother-in-laws. He introduced
to tube gear long ago.
Thanks for asking,
Scott
BKeigans wrote:
| Quote: | Would you like to sell them?
Bill
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Chad Wahls
Guest
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| Posted:
Fri Dec 24, 2004 12:33 am Post subject:
Re: Dynaco Mark VI |
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<julian@cacr.caltech.edu> wrote in message
news:1103822845.474222.208820@z14g2000cwz.googlegroups.com...
| Quote: | I just picked up a pair of Dynaco Mark VI monoblock amplifiers which
were being thrown in the dumpster. All tubes are intact except one of
the 8417s, whose glass is cracked. One amp has its faceplate and meter
missing. The other's meter glass is cracked. Apart from that, both amps
look in good condition. And they weigh a ton!
Are these worth restoring? Are the 8417 tubes hard to find?
Julian
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Merry Christmas you lucky nut :)
Chad |
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Rich.Andrews
Guest
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| Posted:
Fri Dec 24, 2004 1:31 am Post subject:
Re: Dynaco Mark VI |
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François Yves Le Gal <flegal@aingeal.com> wrote in
news:ac1ms0dn262b4krh6tml1tqk8kt334dhqh@4ax.com:
| Quote: | On 23 Dec 2004 09:27:25 -0800, "julian@cacr.caltech.edu"
julian@cacr.caltech.edu> wrote:
Are these worth restoring?
Are you kidding? The answer is a resounding YES.
They are quite a rare beast - less than a couple thousands have been
manufactured in the late '70s, using a classic Dyna design with
excellent iron. Thus they are very much worth a careful restoration.
Are the 8417 tubes hard to find?
They've been long out of production, but you can find some GE's for
around USD 90,00 per matched pair.
The Philips/Sylvania versions are more rugged, last longer in most amps,
but are quite difficult to find at decent prices.
Check for instance http://www.kcanostubes.com/index.html#8417
You may also consider modifying the MK VI in order to accept more widely
available tubes such as 6550's or KT90's.
|
http://www.high-endaudio.com/RC-Vintage.html
The author says this about dynas amps.
THe DYNACO STEREO ST-70 & ST-35, MARK II, III & IV are pretty good but
"...[Dynaco's] other amplifiers are not recommended, and that includes the
grossly overrated and overpriced (and unreliable) MK.VI."
I would say that you could make a good amp out of them provided you put
some time and and some money into the project.
r |
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julian@cacr.caltech.edu
Guest
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| Posted:
Fri Dec 24, 2004 1:35 am Post subject:
Re: Dynaco Mark VI |
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Hi François,
Thanks much for the information.
OK, so I have 8 tubes total in the pair, one cracked, and to replace
them all would cost $360 ... right? Gasp: that's quite some value, just
in the tubes.
My problem is that I don't really have the space in my living room for
a pair of these things. And I wonder if I would need to strengthen the
floorboards to take the weight :-)
The obvious thing I should do is auction them off I suppose, and buy
myself a more manageable-sized tube amp.
Julian |
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julian@cacr.caltech.edu
Guest
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| Posted:
Fri Dec 24, 2004 1:36 am Post subject:
Re: Dynaco Mark VI |
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| Thanks :-) |
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François Yves Le Gal
Guest
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| Posted:
Fri Dec 24, 2004 3:45 am Post subject:
Re: Dynaco Mark VI |
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On Thu, 23 Dec 2004 20:31:26 GMT, "Rich.Andrews" <spmaway@ylhoo.com> wrote:
| Quote: | The author says this about dynas amps.
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Yeah, Salvatore - a former high end retailer and self proclaimed expert -
says a lot of things on his web site. He has never seen a Dyna MK VI. |
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julian@cacr.caltech.edu
Guest
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| Posted:
Fri Dec 24, 2004 8:27 am Post subject:
Re: Dynaco Mark VI |
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I've now got them home, and taken a careful look. The amp without the
faceplate/meter has a few wires underneath that have been disconnected.
The other unit appears intact. When powered up, the meter shows
deflection and can be zeroed in the bias adjust position. All the tubes
glow. I didn't apply power to the other unit, given the disconnected
wires.
These amps are just too bulky and heavy for my taste, and I'll need to
sell them.
Would anyone like to guess as to what they might fetch on Ebay? What is
a fair price? Are they more desirable as a pair, or singly? |
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Chris Hornbeck
Guest
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| Posted:
Fri Dec 24, 2004 8:27 am Post subject:
Re: Dynaco Mark VI |
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On Fri, 24 Dec 2004 03:32:15 GMT, "Rich.Andrews" <spmaway@ylhoo.com>
wrote:
| Quote: | Yeah, Salvatore - a former high end retailer and self proclaimed expert -
says a lot of things on his web site. He has never seen a Dyna MK VI.
Even if it was true, it likely wouldn't take much to correct any
deficiencies. There are no mysteries any more.
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And, the driver board is just a Mk3 clone, and it's otherwise
POTS (plain old conventional stuff). The only unique part is the
B+ delay valve. And they're common as dirt.
I've seen these converted to EL34's successfully, too. But any
modern octal basing can live there just fine. You'll need a higher
bias voltage for the lower perveance tubes, but no biggie.
I'd be tempted to try the nice Russian 6L6 stuff and different
load matching. Price is right.
Good fortune,
Chris Hornbeck
"However I don't think that we're going down the right road fighting it
with an American version of same."
-Richard Webb |
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Rich.Andrews
Guest
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| Posted:
Fri Dec 24, 2004 8:27 am Post subject:
Re: Dynaco Mark VI |
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François Yves Le Gal <flegal@aingeal.com> wrote in
news:caims0h7sp63hq77lbgr84pvfkmgmspic9@4ax.com:
| Quote: | On Thu, 23 Dec 2004 20:31:26 GMT, "Rich.Andrews" <spmaway@ylhoo.com> wrote:
The author says this about dynas amps.
Yeah, Salvatore - a former high end retailer and self proclaimed expert -
says a lot of things on his web site. He has never seen a Dyna MK VI.
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Even if it was true, it likely wouldn't take much to correct any
deficiencies. There are no mysteries any more.
r |
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legg
Guest
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| Posted:
Mon Dec 27, 2004 11:32 pm Post subject:
Re: Dynaco Mark VI |
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On 23 Dec 2004 09:27:25 -0800, "julian@cacr.caltech.edu"
<julian@cacr.caltech.edu> wrote:
| Quote: | I just picked up a pair of Dynaco Mark VI monoblock amplifiers which
were being thrown in the dumpster. All tubes are intact except one of
the 8417s, whose glass is cracked. One amp has its faceplate and meter
missing. The other's meter glass is cracked. Apart from that, both amps
look in good condition. And they weigh a ton!
Are these worth restoring? Are the 8417 tubes hard to find?
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Don't you mean a Mark IV ?
RL |
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julian@cacr.caltech.edu
Guest
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| Posted:
Tue Dec 28, 2004 6:05 am Post subject:
Re: Dynaco Mark VI |
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No.
:-) |
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