[Pricklely Peete]

Quote:

Originally Posted by Penchum /img/forum/go_quote.gif Did you figure out the cause yet?

The Spanish translation from the Chinese assembly manual caused all kinds of problems for the affordable (labor) Mexican elf.

****ducking*****

 

[dgbiker1]

Just picked up a 5-pack of Western Electric 6028s on eBay. Can't wait to try 'em!

 

[ethebull]

I tried to hire the Keebler guy but couldn’t afford him, and Santa’s boys are too frickin’ loyal

 

[Pricklely Peete]

Quote:

Originally Posted by Penchum /img/forum/go_quote.gif It lists the tweeter as: 1-1/4" Perforated Poly-Dome Top Tweeter with high-low selection switch - tweet plays 1/10th as lound as the main driver - there to give cymbals an edge, and precise imagery It lists the bass driver as: Directly Wired 6-3/4" 8-Ohm Wide Band woven Kevlar Strand Main Single Driver(SD) Here is the unique part: Cabinet and Drivers are Custom Designed to work together without a crossover board No Crossover Design = No phase shift midrange blur Here is the site for them: http://www.angelfire.com/biz/bizzyb/TAD805SD.html It is fun listening to them as they mature.

That's pretty cool Pench. No x-over is the ideal for sure. I have a soft spot for speakers. I have at least 6 pairs sitting around all over the house of various types,configs,sizes. Can't stop tinkering with them either

The ones you bought are candidates for a ribbon tweeter transplant

Nice cabs on those. Nice find Penchum.........looks at wallet.......finds a rusty penny and a mountain of receipts, no paper worth anything

Peete.

 

[Pricklely Peete]

dgb !!! Those Western Electrics look to be in minty fresh A1 condish.......how much for the sleeve.......and wait for it.......are there any more ?

 

[dgbiker1]

Quote:

Originally Posted by Pricklely Peete /img/forum/go_quote.gif dgb !!! Those Western Electrics look to be in minty fresh A1 condish.......how much for the sleeve.......and wait for it.......are there any more ?

$15+shipping for 5. Here's some 408A's from the same seller:
5 NOS NIB WESTERN ELECTRIC 408A PENTODE TUBES - AUDIO - eBay (item 230246632993 end time May-01-08 18:25:10 PDT)
Or a lot of 14 for $25:
14 WESTERN ELECTRIC 20 VOLT HAM TUBES 408A~6028 407A NR - eBay (item 120254500912 end time May-04-08 21:07:58 PDT)
These seem a bit risky though, a bit of research revealed 408As (described as an equivalent to the 6028) are 6ak5 with 20V heater voltage, while 403s have a heater voltage of only 6.3V. But you sometimes see 408s listed as equivalents to 403s, so I'm basically trying an equivalent (6028) of an equivalent (408) of a tube that works(403)

I'll post here when I get them. If I don't, my MKIII may have exploded

 

[Pricklely Peete]

Quote:

Originally Posted by ethebull /img/forum/go_quote.gif I tried to hire the Keebler guy but couldn’t afford him, and Santa’s boys are too frickin’ loyal

Believe it not......The Keebler guy has a drinkin' problem, sure at first it was just a wee nip of whiskey with the morning tea....but all to soon that wee nip turned into a fifth between breakfast and dinner.

Not to mention...his diverticulitis made life hard on the helpers...especially on egg salad Fridays !!!!

Nothin' worse than a drunk elf with assembly instruction issues.....

Don't even get me started on Santa's posse.....can you say crack addled pimps ? Shhhhhhud up

 

[Pricklely Peete]

Quote:

Originally Posted by dgbiker1 /img/forum/go_quote.gif $15+shipping for 5. Here's some 408A's from the same seller: 5 NOS NIB WESTERN ELECTRIC 408A PENTODE TUBES - AUDIO - eBay (item 230246632993 end time May-01-08 18:25:10 PDT) Or a lot of 14 for $25: 14 WESTERN ELECTRIC 20 VOLT HAM TUBES 408A~6028 407A NR - eBay (item 120254500912 end time May-04-08 21:07:58 PDT) These seem a bit risky though, a bit of research revealed 408As (described as an equivalent to the 6028) are 6ak5 with 20V heater voltage, while 403s have a heater voltage of only 6.3V. But you sometimes see 408s listed as equivalents to 403s, so I'm basically trying an equivalent of an equivalent to a tube that works I'll post here when I get them. If I don't, my MKIII may have exploded

Doh, maybe I'll see if yours survives before takin' the plunge

PS Won't this just mean you'll be under volting the plates at 6.3 volts when running them in the mk III ? I don't think it will harm the amp, although I could be wrong (and often am ). Will the WE408's last forever at this plate voltage or will this arrangement simply not work at all ? What's you take E ?


Thanks for the link (puts seller in Feebay favs) dgb !!

 

[ethebull]

It's a shame, I probably would have gotten along swimingly with the cookie boy. After a fifth and a few burritos.

 

[Pricklely Peete]

Quote:

Originally Posted by ethebull /img/forum/go_quote.gif It's a shame, I probably would have gotten along swimingly with the cookie boy. After a fifth and a few burritos.

MMMM burritos and egg salad

E what can you tell about 5U4G rectifiers ? As in what's the best (under 50 bucks) NOS type and brand to look for. I have these in mind so far but can't decide. RCA blk plate, 40's & 50's vintage, Green label Sylvania (40 & 50's vintage),Philco 40's vintage,Westinghouse 30's & 40's vintage,GE 40's vintage,Tung Sol 50's, .......as you can see...I've been looking but am having a hell of time deciding. I did find some Ken Rads but holy hell.....80 bucks a piece.

Can you help me out E ? I'm thinking RCA blk plate....but....well you know.

Thanks bro,

Peete.

dgbiker1, what are your thoughts on the above ?

 

[Dept_of_Alchemy]

You guys I'm pretty sure the 408A isn't compatible with EF95.

 

[dgbiker1]

Quote:

Originally Posted by Dept_of_Alchemy /img/forum/go_quote.gif You guys I'm pretty sure the 408A isn't compatible with EF95.

It's not listed on the LD site, but here it's listed as a 6ak5 tube:
https://www.tubeworld.com/400a723a.htm
I'll try them out just to see, they were pretty cheap so it's no big loss. I don't think these can harm the amp as they're equivalents, so it won't be shorting/opening anything it shouldn't. I think what may happen is that they don't get enough power and saturate, a-la EF91.

 

[Dept_of_Alchemy]

I think the 5687 MkIVse amps run the 408A driver tubes, correct me if I'm wrong.

 

[Mike_TNT]

Hey guys,
I know a local seller who has some Amperex Bugle Boy ECC82 and Amperex Bugle Boy 6DJ8 tubes. Are these compatible with the LD?

 

[ethebull]

Quote:

Originally Posted by Pricklely Peete /img/forum/go_quote.gif E what can you tell about 5U4G rectifiers ? Can you help me out E ? I'm thinking RCA blk plate....but....well you know.

The same brands are the players in the 6SN7 arena, but I've never owned gear that uses 5U4G's. I never got deep into vintage glass on my Golden Tube Audio EL34/6SN7 amp. The Svetlana EL34's are great, and I found a Chinese driver that I liked just fine (the Ken Rad is the primo 6SN7 type too). I used to own a pair of VTL 100 watt mono blocks. They came with Telefunken drivers that never let me down. Replaced the EL34's once on them.

One of the cool things about the LD has been how little I've had to spend to check out a whole bunch of vintage glass.