Chelmer Valves...What Are They??
Ted Breaux
I apologize, as I know this has been asked lately, but I had no reason to
pay attention then......
I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
they? Anyone out there know? They appear to be shorter than the GEC type
and have aluminum bases like the GEC, but then again, they don't look to be
'newer' (?).
Thanks!
Ted B.
Wilfred
The Chelmer KT88's I saw in a (new) CR-development amp were the usual
Chinese ones.
To be avoided.
Wilfred
Ted Breaux heeft geschreven in bericht
<01bd4c3b$bc3c6ce0$09bdb5cc@default>...
>I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
>they? Anyone out there know?
>Thanks!
>
>
>Ted B.
Sander deWaal
On 10 Mar 1998 09:52:55 GMT, "Ted Breaux" <tabr...@neworleans.com>
wrote the following:
>I apologize, as I know this has been asked lately, but I had no reason to
>pay attention then......
>
>I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
>they? Anyone out there know? They appear to be shorter than the GEC type
>and have aluminum bases like the GEC, but then again, they don't look to be
>'newer' (?).
SMOKE ALERT!!!!!
_
Sander deWaal
postm...@pegasus.demon.nl
www.pegasus.demon.nl
_______________________________________________
Russ Sadd
Hi,
Chelmer Valves are another British valve supplier, in the traditions of
Colmor Electrononics, Watford Valves, and Billington Export. They sell some
NOS, and bases, but also sell their 'own' brand of valves, like Billington
do. These are mostly Chinese in origin if I remember rightly. These KT88s
will be re-badged Chinese 6550s, be careful about the tolerances (Chinese
valves are normally a bit temperamental!)
Regards,
Russ Sadd
Gucci Goo
How about their KT77? Will they be better than new EL34 since
they are KT77?
Nikolai Bakschies
Hi,
I have a CR-Developments Kalypso with Chelmer valves (12AX7, 12AU7, EL84). I
think it souns pretty good in relation to the (low) price. Do you think
replacing tubes may improve the sound quality ?
Niko ;-)
Ted Breaux wrote:
> I apologize, as I know this has been asked lately, but I had no reason to
> pay attention then......
>
> I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
> they? Anyone out there know? They appear to be shorter than the GEC type
> and have aluminum bases like the GEC, but then again, they don't look to be
> 'newer' (?).
>
> Thanks!
>
> Ted B.
Ned Carlson
On Wed, 11 Mar 1998 22:04:13 GMT, gucci...@umich.edu (Gucci Goo)
wrote:
>How about their KT77? Will they be better than new EL34 since
>they are KT77?
I don't think anyone is making real KT77.
AAMOF, I don't think they're real KT77
if MO Valve didn't make them, I've heard of
EL34's being relabelled and sold as some
lame excuse for KT77.
Real British KT77 have a unique internal plate structure
which will not be mistaken for EL34 if you've
ever seen it, simply having a round top
does not a KT77 make.
Ned Carlson Triode Electronics,2225 W Roscoe Chicago, IL, 60618 USA
ph 773-871-7459 fax 773-871-7938
12:30 to 8 PM CT, (1830-0200 UTC) 12:30-5 Sat, Closed Wed & Sun
http://www.triodeel.com
Text file catalogs:Catalog 'Bot at cat...@triodeel.com
Greg Pierce
>On Wed, 11 Mar 1998 22:04:13 GMT, gucci...@umich.edu (Gucci Goo)
>wrote:
>
>>How about their KT77? Will they be better than new EL34 since
>>they are KT77?
>
>I don't think anyone is making real KT77.
>AAMOF, I don't think they're real KT77
>if MO Valve didn't make them, I've heard of
>EL34's being relabelled and sold as some
>lame excuse for KT77.
>
>Real British KT77 have a unique internal plate structure
>which will not be mistaken for EL34 if you've
>ever seen it, simply having a round top
>does not a KT77 make.
Uncle Ned's right on the money. Real KT77s haven't been made since MOV
closed shop many years ago.
The KT77 isn't enen a true pentode, but is actually a beam tetrode.
Its ratings were pretty hefty for an 'EL34' type; pd 32 watts, 850 max
plate volts, 650 max screen volts, 200mA max cathode current. Try
running a Chelmer KT77 at those ratings, and you'll think July 4th
came early. Anyway, to tell if an alleged KT77 is the real item, peek
through the inspection holes. An EL34 will have 3 grids, whereas a
KT77 will have a long rectangular beam forming electrode in there.
Greg
Wilfred
Ned Carlson heeft geschreven in bericht
<35073ead...@news.supernews.com>...
>I don't think anyone is making real KT77.
The guys at Valve Art are working on KT77's.
I don't know if they already released them.
Wilfred
Russ Sadd
Hi,
Since my original Golden Dragon KT66s fizzed when run gently, I'm afraid the
ability of Chinese valves to run at original spec. is a bit suspect. These
'KT66s' did not handle the full power of 6L6s, much less a super-7581A
(which is what the KT66 should be). I guess you should enquire, and maybe
get a test pair to see how good they are. A good valve tester (which you
could improvise) should give you some info, as would a visual inspection
(rigidity of construction, size and type of anode for cooling, thickness of
glass, strength of bass - you can often judge the quality of a valve by
this).
A KT77 isn't an EL34 to my knowledge - but I could always be sadly mistaken!
Regards,
Russ Sadd
Chris Livsey
>>I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
>>they? Anyone out there know?
Ask Chelmer Valve Company themselves
130 New London Road
Chelmsford
Essex
CM2 0RG
England
44(0)1245 355296
Fax 490064
Best wishes
--
Chris Livsey
Duncan Munro
>>>I just got an old Hiwatt with some Chelmer brand KT88s in it. What are
>>>they? Anyone out there know?
>
>Ask Chelmer Valve Company themselves
>
>130 New London Road
>Chelmsford
>Essex
>CM2 0RG
>England
> 44(0)1245 355296
>Fax 490064
Chris,
I've got a CVC box sitting on my monitor with a (dead) metal 6K8 in
it. Question: those metal octal tubes from WW II, do they have glass
inside, or is it just "metal"????
Cordials,
Duncan
--
Duncan Munro
Check out http://www.duncanamps.simplenet.com/
for Homebrew guitar amps and SPICE models
BOF #023
Chris Livsey
In article <3509cc6b....@news.demon.co.uk>, Duncan Munro
<postm...@muffy.demon.co.uk> writes
>
>Chris,
>
>I've got a CVC box sitting on my monitor with a (dead) metal 6K8 in
>it. Question: those metal octal tubes from WW II, do they have glass
>inside, or is it just "metal"????
>
>Cordials,
>Duncan
fast way of finding out.
Tim
I have been using the Valve Art EL34 for a few month now and it is a very
very good tube indeed. But it does not look or sound like a KT77 at all.
Wilfred wrote in message <6e9j7c$bn1$1...@news.Kijfhoek.NL.net>...
Wilfred
Hi Tim,
I didn't say the Valve Art EL34 is a KT77, but that they are developing one.
The VA EL34 is a 'real' (pentode) EL34.
In what kind of amp are you using them? How do they compare to other EL34's?
I haven't got to try them myself, but these are some of the best looking
EL34's I know (really heavy construction).
Regards,
Wilfred
Tim heeft geschreven in bericht <6ed15k$ln...@lyra.hkstar.com>...
>I have been using the Valve Art EL34 for a few month now and it is a very
>very good tube indeed. But it does not look or sound like a KT77 at all.
>
>Wilfred wrote in message <6e9j7c$bn1$1...@news.Kijfhoek.NL.net>...