trinityamps.com

Trinity Amps Guitar Amp Forum
It is currently Sat Nov 23, 2024 9:43 am

View unanswered posts | View active topics


Board index » On Stage » 18 Watt

All times are UTC - 5 hours [ DST ]



Post new topic Reply to topic  Page 2 of 2
  [ 39 posts ]  Go to page Previous  1, 2
  Previous topic | Next topic 
Author Message
CraigB
 Post subject:
PostPosted: Wed Apr 13, 2005 5:37 pm 
Offline
Friend
Friend
User avatar

Joined: Thu Mar 17, 2005 1:37 pm
Posts: 26
Location: santa barbara CA
Oh, sorry, same voltage drop as 5U4 :?
Top
 Profile  
 
s2
 Post subject:
PostPosted: Thu Apr 14, 2005 6:34 pm 
Offline
Experienced
Experienced

Joined: Sun Mar 13, 2005 11:38 pm
Posts: 216
Location: Dallas, TX
coco wrote:
The West Labs tranny has 5V tap and I confirmed with Dave that it can handle 3A, so the 5Y3, 5U4 can be substitued for the 5AR, no problem (except maybe the stand-by in the long term).

Try it and let us know how it sounds.


Shameless plug time... The s2 Lightning PT sports a 3.25A rectifier tap, so a 5U4 is no problemo.

_________________
--s2
www.s2amps.com
www.category5amps.com
Top
 Profile  
 
coco
 Post subject:
PostPosted: Thu Apr 14, 2005 10:06 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
Quote:
The s2 Lightning PT sports a 3.25A rectifier tap, so a 5U4 is no problemo.


No problemo, it's a great feature of your PT. Thanks for doing it!

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
CALZONE
 Post subject:
PostPosted: Tue Apr 26, 2005 2:33 pm 
Offline
Friend
Friend

Joined: Thu Apr 21, 2005 2:24 pm
Posts: 22
Location: NYC
The 5U4 draws a lot of current for sure, but I do not know if the extra capacity and overbuild exists in the Matchless Lighning trannies, but I know S2's trannies are engineered to supply the extra current from a thread in another forum. Consider this if you are building an amp.

I have an 52 Gibson amp that uses a 5U4 and it has no stanby switch. I must strip the cathodes every time I turn it on, but the NOS rectfier I have in there seems to take the abuse pretty well.

An unmentioned bonus is that as NOS tubes the 5U4's are cheaper than GZ34's.
Top
 Profile  
 
Bear
 Post subject:
PostPosted: Tue Apr 26, 2005 6:09 pm 
Offline
Novice
Novice

Joined: Tue Mar 29, 2005 8:11 pm
Posts: 97
The West Labs stuff specs 3 amps of 5v on both their 15 watt and 30 watt PT's. I assume any other iron used by Matchless will have the same specs.

Bear
Top
 Profile  
 
Scott_F
 Post subject:
PostPosted: Mon Jun 13, 2005 4:56 pm 
Offline
Novice
Novice

Joined: Sun Jun 12, 2005 11:07 pm
Posts: 89
Location: College Station, TX
why no standby? westlabs sells that triple throw switch that I'm going to use for a standby.
Top
 Profile  
 
Bear
 Post subject:
PostPosted: Mon Jun 13, 2005 6:16 pm 
Offline
Novice
Novice

Joined: Tue Mar 29, 2005 8:11 pm
Posts: 97
Scott_F wrote:
why no standby? westlabs sells that triple throw switch that I'm going to use for a standby.


Yeah, I like that thing. I'm sold on it just conceptually. For those who don't know, it's got two decks so the one switching power at the three throws is off-on-on, standby is off-off-on, so it's all on one switch. Why didn't anyone think of that before? Great upgrade idea on vintage, too.

Bear
Top
 Profile  
 
coco
 Post subject:
PostPosted: Mon Jun 13, 2005 8:01 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
Bear wrote:
Scott_F wrote:
why no standby? westlabs sells that triple throw switch that I'm going to use for a standby.


Yeah, I like that thing. I'm sold on it just conceptually. For those who don't know, it's got two decks so the one switching power at the three throws is off-on-on, standby is off-off-on, so it's all on one switch. Why didn't anyone think of that before? Great upgrade idea on vintage, too.

Bear


Has anyone found these anywhere besides WestLabs? I've been looking all over.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
erl
 Post subject:
PostPosted: Wed Jun 15, 2005 5:14 am 
Offline
Experienced
Experienced
User avatar

Joined: Wed Mar 16, 2005 9:34 pm
Posts: 208
Location: Apache Junction, AZ
I used 642-644H2 from Mouser in the tremolo Lightning I just finished. It has the progressive circuit and has worked great thus far.

Eddie
Top
 Profile  
 
Scott_F
 Post subject:
PostPosted: Thu Jul 14, 2005 10:22 pm 
Offline
Novice
Novice

Joined: Sun Jun 12, 2005 11:07 pm
Posts: 89
Location: College Station, TX
erl wrote:
I used 642-644H2 from Mouser in the tremolo Lightning I just finished. It has the progressive circuit and has worked great thus far.

Eddie


More expensive than the West Labs on it appears...
Top
 Profile  
 
bitsandvolts
 Post subject:
PostPosted: Sun Jul 24, 2005 1:12 pm 
Offline
Expert
Expert
User avatar

Joined: Sun Mar 13, 2005 5:56 pm
Posts: 619
From my experience with the taboo amp, the 5Y3 provides quite a good amount of start up delay....it's probably fine to use in an amp without a standby....

but I'll defer to s2 and coco for the final word on that....
Top
 Profile  
 
coco
 Post subject:
PostPosted: Sun Jul 24, 2005 1:26 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
I would think that a standby switch would be preferred in this case. I know s2 has used a 5Y3 on a 15, so lets see what he has to say.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
Maccabee
 Post subject:
PostPosted: Wed Dec 07, 2005 10:31 pm 
Offline
Novice
Novice
User avatar

Joined: Tue Mar 22, 2005 8:56 am
Posts: 126
Location: Virginia
8)

I know this is an old thread but how did the test with the 5Y3 come out? I have an old GE 5U4GB in the drawer that came out of an old HiFi.
Prolly going to build my Lightin' this month as I have now sold all my prototypes.

Thanks!!!

CR ><>

_________________
WoodCross Amps

http://www.geocities.com/woodcrossamps/
Top
 Profile  
 
coco
 Post subject:
PostPosted: Wed Dec 07, 2005 10:39 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
I know s2 likes the 5Y3, I've never tried it, just the 5U4

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
LeeMo
 Post subject:
PostPosted: Thu Dec 08, 2005 12:37 am 
Offline
Novice
Novice
User avatar

Joined: Thu May 19, 2005 12:41 pm
Posts: 148
Location: Mississippi
I have a 55 Tremolux that I've been using a 5y3 in for years. I recently put a EH 5U4 in it. The 5Y3 has a lot more "Sag" at higher volume settings. With the amp dimed ( or more like "Twelved" ) :lol: and hot humbuckers, it will almost "squat" and completly brown out. The 5u4 tames that tendancy very well.
Hope that helps. Heck, for ten more bucks you can try both yourself.

LeeMo
Top
 Profile  
 
Broz
 Post subject:
PostPosted: Mon Dec 12, 2005 5:08 pm 
Offline
Friend
Friend

Joined: Mon Jun 13, 2005 4:06 pm
Posts: 43
David Allen also sells the progressive off-on-on 2 cirucuit switch for about $7. I've used them for several builds and like it a lot more than a separate stand-by switch.
Broz
Top
 Profile  
 
coco
 Post subject:
PostPosted: Mon Dec 12, 2005 11:34 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
Broz wrote:
David Allen also sells the progressive off-on-on 2 cirucuit switch for about $7. I've used them for several builds and like it a lot more than a separate stand-by switch.
Broz


Whre is David located?

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
Broz
 Post subject:
PostPosted: Tue Dec 13, 2005 8:21 am 
Offline
Friend
Friend

Joined: Mon Jun 13, 2005 4:06 pm
Posts: 43
Stephen,
He's in Kentucky. http://www.allenamps.com/ The switch is his part numer SW (Carling progressive $7). He also sells good transformers for fender type amps and a low priced single-ended OT that has gotten good reviews.
Broz
Top
 Profile  
 
jim50hertz
PostPosted: Sun Jul 09, 2017 12:43 pm 
Offline
Friend
Friend

Joined: Thu May 12, 2011 2:04 pm
Posts: 17
Bumping an old thread.

I'm interested in swapping the rectifier from GZ34 to a 5R4, similar to what a lot of AC30 owners seem to do.

As far as I can ascertain this will not harm the amp, has anyone tried this?
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 2 of 2
  [ 39 posts ]  Go to page Previous  1, 2

Board index » On Stage » 18 Watt

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: Google [Bot] and 32 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group