Audiophile (Dec): 6GB8 replacing EL34?
GUCCIPHILE
and replace EL34 in M9. Has anyone tried it? Will it work with M8B?
Sent via Deja.com http://www.deja.com/
Before you buy.
diy...@my-deja.com
Why not, Toshiba has 2 very famous tube which are rated equal to
western products after the WWII. Toshiba 7189 and 6GB8. To me, 6GB8
look like a small EL156.
Speaking about EL156, I was outbid suddenly on last minute for a quad
from a fat boy. However that quad has never been taken from the self
when I visiting his shop. TFK EL-156 was praised better than GEC KT88.
Diytfy!
Tim
diy...@my-deja.com wrote:
> In article <8244lr$k7$1...@nnrp1.deja.com>,
> GUCCIPHILE <gucci...@aol.com> wrote:
> > Saw this in the other thread. What's the deal with using Toshiba
6GB8
> > and replace EL34 in M9. Has anyone tried it? Will it work with
M8B?
> >
> > Sent via Deja.com http://www.deja.com/
> > Before you buy.
> >
>
> Why not, Toshiba has 2 very famous tube which are rated equal to
> western products after the WWII. Toshiba 7189 and 6GB8. To me, 6GB8
> look like a small EL156.
To my knowledge, Toshiba 7189/EL84 is not any cheaper than the most
expensive NOS European EL84 but not necessarily better.
So have you try replacing EL34 with this 6GB8 before? Can TFK EL156 also
work in a M9/M8b?
> Speaking about EL156, I was outbid suddenly on last minute for a quad
> from a fat boy. However that quad has never been taken from the self
> when I visiting his shop. TFK EL-156 was praised better than GEC KT88.
That is most certainly a popular tube among collector. >HK$2.5k each in
shops around town. There seem to have different versions of this tube
with different plate material/structure. Any information on this?
Tim
GUCCIPHILE
> > Why not, Toshiba has 2 very famous tube which are rated equal to
> > western products after the WWII. Toshiba 7189 and 6GB8. To me, 6GB8
> > look like a small EL156.
>
also
> work in a M9/M8b?
Is 6GB8 a direct substitute for EL34? How expensive is it? Can it
beat NOS EL34?
Tim
GUCCIPHILE <gucci...@aol.com> wrote:
>
> > > Why not, Toshiba has 2 very famous tube which are rated equal to
> > > western products after the WWII. Toshiba 7189 and 6GB8. To me,
6GB8
> > > look like a small EL156.
> >
> > So have you try replacing EL34 with this 6GB8 before? Can TFK EL156
> also
> > work in a M9/M8b?
>
> Is 6GB8 a direct substitute for EL34?
I doubt it. It is likely to be a similar but not equivalent tube like
KT66, which is, according to our friends in Israel, the absolute best
tube in Marantz 8B. None of us in HK dare to try this yet. Maybe you
should.
> How expensive is it?
Latest I heard is that this tube is not cheap. >US$50 each.
> Can it beat NOS EL34?
According to the author, the 6GB8 is better than even Mullard Type 2
"Big brown feet".
Tim
danny...@my-deja.com
I will verify it this evening.
Danny
In article <8259db$pqn$1...@nnrp1.deja.com>,
wilso...@my-deja.com
I have a chance to listen a M9 with 6GB8 around a year ago in my friend
house. It can work & sound fine to me. My friend told me that it was
better than all the EL34 tubes( no Mullard, Amperex & tele.) on his
hand.
Maybe we should has a samll listening test on 6BG8 VS EL34. I have good
used condition( old version) 6GB8 for collection. So, if someone in here
like to have a listening test. Please let me know. Tim, I guess you
maybe interested.
Wilson
In article <825guc$vnk$1...@nnrp1.deja.com>,
Tim
wilso...@my-deja.com wrote:
> Hi,
>
> I have a chance to listen a M9 with 6GB8 around a year ago in my
friend
> house. It can work & sound fine to me. My friend told me that it was
> better than all the EL34 tubes( no Mullard, Amperex & tele.) on his
> hand.
>
> Maybe we should has a samll listening test on 6BG8 VS EL34. I have
good
> used condition( old version) 6GB8 for collection. So, if someone in
here
> like to have a listening test. Please let me know. Tim, I guess you
> maybe interested.
I am indeed most keen. But do you think it will work in a self-bias
EL34 circuit? I think all my EL34 amp have self-bias circuit.
and...@ctimail.com
> > Hi,
> >
> > I have a chance to listen a M9 with 6GB8 around a year ago in my
> friend
> > house. It can work & sound fine to me. My friend told me that it was
> > better than all the EL34 tubes( no Mullard, Amperex & tele.) on his
> > hand.
> >
> > Maybe we should has a samll listening test on 6BG8 VS EL34. I have
> good
> > used condition( old version) 6GB8 for collection. So, if someone in
> here
> > like to have a listening test. Please let me know. Tim, I guess you
> > maybe interested.
>
> I am indeed most keen. But do you think it will work in a self-bias
> EL34 circuit? I think all my EL34 amp have self-bias circuit.
>
> Tim
Is the tube should read 6GB8? My friend had lent me 4 Old 'Toshiba for
Hi Fi' rusty black plate, 3 getter rings version. I had put them in
Sterling (borrow from Doctorjoin) and it sound good. If an audition
party is held, my frient could bring the tubes for audition.
Andy Law
diy...@my-deja.com
> So have you try replacing EL34 with this 6GB8 before? Can TFK EL156
also
> work in a M9/M8b?
> That is most certainly a popular tube among collector. >HK$2.5k each
in
> shops around town. There seem to have different versions of this tube
> with different plate material/structure. Any information on this?
>
> Tim
Many people come out and I learn more about 6GB8. Ousluk at Mongkok
always have good Toshiba UOS at cheap price.
TFK EL156 has special 12 Pins base cannot be substitude and it uses
much more filament current.
I think it will be a very good tube for WaiLee type SE/UL over KT88
variants.
Diytfy!
jekyl...@my-deja.com
good
> used condition( old version) 6GB8 for collection. So, if someone in
here
> like to have a listening test. Please let me know. Tim, I guess you
> maybe interested.
Me too!
--
Used to be doctorjohn, now Jekyll and Hyde
jekyl...@my-deja.com
and...@ctimail.com wrote:
> Is the tube should read 6GB8? My friend had lent me 4 Old 'Toshiba for
> Hi Fi' rusty black plate, 3 getter rings version. I had put them in
> Sterling (borrow from Doctorjoin) and it sound good. If an audition
> party is held, my frient could bring the tubes for audition.
Holy malone! I am glad my Sterling survived! :-)
Tim
> > > Hi,
> > >
> > > I have a chance to listen a M9 with 6GB8 around a year ago in my
> > friend
> > > house. It can work & sound fine to me. My friend told me that it
was
> > > better than all the EL34 tubes( no Mullard, Amperex & tele.) on
his
> > > hand.
> > >
> > good
> > > used condition( old version) 6GB8 for collection. So, if someone
in
> > here
> > > like to have a listening test. Please let me know. Tim, I guess
you
> > > maybe interested.
> >
> > EL34 circuit? I think all my EL34 amp have self-bias circuit.
> >
> > Tim
>
> Hi Fi' rusty black plate, 3 getter rings version. I had put them in
> Sterling (borrow from Doctorjoin) and it sound good. If an audition
> party is held, my frient could bring the tubes for audition.
Is the 6GB8 sound better than Mullard type 2 or Amperex double-D in the
Sterling?
Tim
GUCCIPHILE
> Many people come out and I learn more about 6GB8. Ousluk at Mongkok
> always have good Toshiba UOS at cheap price.
>
> TFK EL156 has special 12 Pins base cannot be substitude and it uses
> much more filament current.
>
> I think it will be a very good tube for WaiLee type SE/UL over KT88
> variants.
How do you set bias on 6GB8?
GUCCIPHILE
Tim
The article was actually about a DIY 6L6 SE amp project but with the
remark about using Toshiba 6GB8 on M9 to replace EL34 and getting good
sound. There is no more information from the article.
But I understand the author is actually a friend of Andy Law. Is that
correct, Andy? Would that be the same guy that Wilson know? That cannot
be so many people trying crazy thing like putting 8417-compatible into
M9.
Maybe using GEC KT66 in M8b is safer and something you should try first.
Tim
and...@ctimail.com
I just have a brief audition. Sound slightly different to Mullard type 2 and
Amperex double D getters. The tonal balance is good. I prefer to let you and
doctorjoin to find out more. My friend had handed a set of five 6GB8 to me
for lending to Doctorjoin for a test audition.
Andy Law
and...@ctimail.com
jekyl...@my-deja.com wrote:
> In article <827b6p$as5$1...@nnrp1.deja.com>,
> and...@ctimail.com wrote:
>
for
> > Hi Fi' rusty black plate, 3 getter rings version. I had put them in
> > Sterling (borrow from Doctorjoin) and it sound good. If an audition
> > party is held, my frient could bring the tubes for audition.
>
Yes. I am glad too. No smoke nor burning smelt from the Sterling. My
friend reiterated that it could be used as direct plug-in for EL34 and
he had used them before.
and...@ctimail.com
> But I understand the author is actually a friend of Andy Law. Is that
> correct, Andy? Would that be the same guy that Wilson know? That
No. I do not know the author.
Tim
you, John. Your favourite tube, right?
Tim
----- Original Message -----
From: Ned Carlson <postm...@triodeel.com>
Newsgroups: rec.audio.tubes
Sent: Sunday, 5 December 1999 0:13
Subject: Re: 6GB8 substitute EL34?? Help NED
> Usually they're called "6G-B8" with the hyphen in there.
> That may be why it didn't turn up if you searched for it.
>
> There's some data on 6G-B8 at
> http://www.triodeel.com/tubedata.htm
>
> Very similar to 8417. It might be possible to make
> them work in place of EL34 in some amps, (eg: I've actually
> used 8417's in ST70's), but it's not a dropin replacement.
> You'd almost always have to goof with the bias circuit, the
> grid resistors and the feedback.
>
> --
> Ned Carlson Triode Electronics "where da tubes are!"
> 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
> Magnequest Transformers stocked for Dynaco & Sunn!
> http://www.triodeel.com
GUCCIPHILE
In article <82bj73$5vr$1...@nnrp1.deja.com>,
Tim
GUCCIPHILE <gucci...@aol.com> wrote:
> So is it 8417 or 6GB8 that should you should use to replace EL34??
I would NEVER try that myself. KT66 or even KT88 maybe closer.
Tim
diy...@my-deja.com
>
> How do you set bias on 6GB8?
>
That's simple. You may use a varible resistor the tilt down from high
value. With a DMM in series on plate. Adjust plate current value
according to 6GB8 respective working condition.
If you're going to replace EL34. Compare their neg bias point and
adjust driver stage P-P voltage. Sound is absolutly not good without
doing this job if e.g. EL34 neg bias greater than 6GB8.
Becareful on substitution.
Diytfy!