Kaidee's Simple SE Build Thread - Page 2 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Tubelab

Tubelab Discussion and support of Tubelab products, prototypes and experiments

Reply
 
Thread Tools Search this Thread
Old 20th December 2008, 06:01 PM   #11
diyAudio Member
 
Join Date: Nov 2008
I finally got started! all went well with the resistors i think. Here are a couple pictures.
Note my old school pencil iron. Got my dad through school too =)

edit. always says my pictures are too big! i thought 102400bytes is 800kb? my photos are resized to 400 already. I will try to figure it out later when I return!
  Reply With Quote
Old 20th December 2008, 06:24 PM   #12
pchw is offline pchw  United States
diyAudio Member
 
Join Date: Apr 2006
Location: Fremont, California
First, apologize to nukaidee for thread jacking a little OT but not totally off base :-)

I bought a fully populated SimpleSE board, PT, and Choke from another member John, but I was too late to buy his OT's. I have a pair Hammond 1627SEA OT's. However, the primary impedance is 2500. Unfortunately, the speakers that I intend to use are 4 ohms. If they were 8 ohms, I could wire them to the 4 ohm tap to reflect a 5K load on the primary. So, the question is, are 2500 too low or I shall look for something higher? Another question is, John has the components soldered on the top of the board, will it be a good idea to desolder the components and mount them on the other side (which I prefer)? My fear is that I may overheat the components while doing so.
__________________
- Fred -
  Reply With Quote
Old 20th December 2008, 06:44 PM   #13
n_maher is offline n_maher  United States
diyAudio Member
 
Join Date: Jul 2005
Location: Seacoast, NH
Quote:
Originally posted by Ty_Bower
I'm a big fan of the Harbor Fright step drills, especially if you are drilling aluminum. They make nice smooth holes, even in 3mm thick stuff. I've been told that a "good" chassis punch is even better, but good chassis punches cost good money.
Yup, I've got a Greenlee punch that is the perfect size for Neutrik D-size housings (their xlrs and even some rcas) and it has more than paid for itself now in saving both time and aggravation. But even cheap chassis punches can come in handy. I bought a set from HF a couple years ago and used them for the first time on my recent SimpleSE build. Turned out that what they called a 1" punch was the perfect size for the octal sockets that I used. Granted I still had to drill a 3/4" pilot hole for the punch but I've got a set of 3 Irwin stepped bits that includes one that goes up that large so it was no trouble. Drilling difficulty strikes me as an exponential relationship compared to hole size. Even then I've had pretty good luck with bi-metal holesaws once the hole diameter is over an inch. I have also had really bad luck trying to use stepped bits at hole diameters anywhere over an inch, and yes that is using a drill press and clamps. They just aren't made for precise work so they tend to not cut round holes.

That's my 2c,

Nate
  Reply With Quote
Old 20th December 2008, 08:33 PM   #14
diyAudio Member
 
Ty_Bower's Avatar
 
Join Date: Mar 2007
Location: Newark, DE
I've got the Harbor Fright plumbers' chassis punch set. The little one is too small for anything, and the two biggest ones are too big. The only one left is fairly large for a noval socket, but OK as long as you don't mind the gap. It's really tight for an octal socket, and you've got to be lucky to get it to line up in the right spot. I managed to punch ten holes with mine before I got a piece jammed in the punch. In all fairness I am punching 3mm aluminum plate, which is clearly more than this punch was intended to handle.

I used the 1/2" step drill to make the pilot hole for the punch.
  Reply With Quote
Old 21st December 2008, 10:16 PM   #15
diyAudio Member
 
Join Date: Nov 2008
well the picture still aren't working so i'll try to describe this. I need to put my sockets in except the pin on the bottom of the socket don't match with the pins on the board! what to do oh what to do.. my sockets even came with some kind of gold holder!
  Reply With Quote
Old 24th December 2008, 06:15 AM   #16
diyAudio Member
 
Join Date: Nov 2008
another update! i still can't post pics, but all parts are soldered. my coupling capacitors are auricaps. the trasnformers are in town, but haven't been picked up yet. many threads talk about "testing" the amp before hooking it up to anything, I haven't figured out what I should be prodding with my multimeter. any suggestions?

thanks!
  Reply With Quote
Old 24th December 2008, 11:46 AM   #17
diyAudio Member
 
Ty_Bower's Avatar
 
Join Date: Mar 2007
Location: Newark, DE
For your photos, get a free account at Photobucket.com. Upload your photos, check the little box underneath them, and press the blue "Generate HTML and IMG code" button at the bottom of the page. Copy the code in the section titled "IMG clickable thumbnails for message boards - recommended" and paste it into your message here.

Did you figure out the sockets?

Pre-testing usually involves the ohmmeter and checking to make sure that nothing is shorted to ground where it should not be. You can also measure most (if not all) if the resistors while they are on the board and confirm they are the right value. I like to use a printed copy of George's parts list and check off each part as I verify it is correct. It's also a good idea to double check the electrolytic capacitors to ensure they are installed with the proper polarity.

Did you install the solid state FREDs? Recently there has been another report of trouble with them.
  Reply With Quote
Old 24th December 2008, 01:34 PM   #18
diyAudio Member
 
whitelabrat's Avatar
 
Join Date: Dec 2006
Location: Maryland
nukaidee, glad to hear you've got a chassis in the works. I used a Greenlee 1/2 and 3/4 conduit punch for the job, and a cheap hand drill for everything else. As far as testing I simply looked at everything closely to be sure everything was soldered correctly. And then I did it again. And again. Then I wired everything up and brought it up on a variac while cringing and hoping there would be no smoke.

I smoked a Sovtek 5ar4 yesterday after a year of service. Sparks and popping in the tube. I turned off the amp immediately and retired that tube. I've got a 5u4gb in right now cause I'm too busy to dig around for another 5ar4. The 5u4 it drops the voltage too much to sound ok but it's good enough for now.

I've got a set of FRED's I'm thinking I'll put back in. Having a CL90 thermistor (did Tubelab suggest a CL110?) and avoiding a standby switch should do just fine.
  Reply With Quote
Old 24th December 2008, 03:55 PM   #19
diyAudio Member
 
Join Date: Nov 2008
Hello,

Thanks for all your comments everyone. I don't have the FREDs, I'm going with the tube rectifier, I verified a couple resistors, they were within 5% so I think its ok?
  Reply With Quote
Old 3rd January 2009, 03:09 AM   #20
diyAudio Member
 
Join Date: Nov 2008
another update!
sorry about the delay. My binding posts came in as my ac plugs. I also picked up the transformers. man! they're alot heavier than I'd have thought. I expected the allied ps to be the size of the hammonds and the hammonds to be half their size. I inspiration for an enclosure now they're much too big and heavy. My RCA jacks still aren't here yet either, so no input yet, I might to wire up a 3.5mm input for now since I have those lying around.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
SE - Build Thread soundengine355 Solid State 6 27th June 2009 12:19 AM
My SE KT-88 Build thread athos56 Tubes / Valves 13 21st December 2008 06:16 AM
My TABAQ Build Thread Consul Full Range 17 3rd September 2008 09:50 PM
Dan's Aleph Build Thread monarodan Pass Labs 19 14th February 2007 11:06 AM
The ESL Build Thread BillH Planars & Exotics 172 8th November 2006 09:01 PM


New To Site? Need Help?

All times are GMT. The time now is 10:08 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2