|
|
Post by keymod on Jan 29, 2015 5:41:18 GMT -6
Anyone here built one? I bought a pair about a year ago during what was supposedly the final production run. I have some time now ( waiting for Jeff's new compressor  ). This build seems more difficult than I'm used to, without any step-by-step instructions, so I'm a little hesitant. Anything I should look out for?
|
|
|
|
Post by tonycamphd on Jan 29, 2015 12:37:50 GMT -6
the thing i do when i'm unsure, or i don't have a very nice schemo, is find someone with a verified functional unit and have them snap a couple hi rez pics of it's guts, it will give you a guide and some visual reassurance. I'm still a looooooong way from being as good as the likes of many around here, but staring at schemos and reading up on the circuits i work on really go a long way. Kinda like learning songs i really enjoy have always stuck with me much more than some teacher showing me rudiments.
|
|
|
|
Post by winetree on Jan 29, 2015 13:12:11 GMT -6
|
|
|
|
Post by keymod on Jan 29, 2015 17:39:18 GMT -6
Thanks. It seems most of that 25page thread is about parts substitutions and troubleshooting, not really a step-by-step build guide. Maybe I should read through it again, more carefully.
|
|
|
|
Post by keymod on Jan 30, 2015 5:49:09 GMT -6
Anyone compare the LAZ LA3500 to the JLM LA500 ? The JLM looks like a much easier build.
|
|
|
|
Post by jfoc on Jan 30, 2015 7:53:25 GMT -6
|
|
|
|
Post by tonycamphd on Jan 30, 2015 12:14:20 GMT -6
Anyone compare the LAZ LA3500 to the JLM LA500 ? The JLM looks like a much easier build. looks like a fun and easy build, i know wiz loves his, i swear by the Serpent SA3A, it's a 100% la3a clone with the coveted mods that everyone has done to their la3a's built right in. |
|
|
|
Post by drew571 on Jan 31, 2015 8:39:44 GMT -6
I've done 2 JLM LA500's. At the time my previous DIY experience was limited to some VP26's and some stompboxes. Oh, and a Hammond C3 and trasnforming a Leslie 22H into a 122.
They are fairly straightforward. Just follow the directions carefully when calibrating at the end and you should be good. They sound fantastic.
|
|
|
|
Post by mulmany on Feb 3, 2015 20:47:58 GMT -6
I finally got all the parts for mine. I had bought all the key components 3 years ago, then life happened. Like you said keymod its more of a figure it out build, so I have been putting it off. It is going to get built after I finish my NV73's. Now I just need to do it. |
|
|
|
Post by miscend on Feb 4, 2015 16:52:59 GMT -6
The LA500 is fantastic
|
|
|
|
Post by NoFilterChuck on Feb 6, 2015 1:30:10 GMT -6
I built a pair of LAZ LA3As. they're working just fine. they sound identical to the SA-3A too.
|
|
|
|
Post by keymod on Feb 6, 2015 6:20:32 GMT -6
Chuck, did you stumble through the build, or were you able to find a definitive build guide? Again, to me, those 25 pages in the build thread over on Groupdiy don't seem too helpful.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 6, 2015 7:32:20 GMT -6
Hey keymod, it is a kit done oldschool DIY. Get the BOM and the schematic. Go thru the build thread post by post, write down essential information, correction etc. Print out additional hookup information pics. Try to make your mind up what this circuit is all about, and what the sections on the PCBs actually do. Then start building. From the resistors up, small shallow parts first. It is not that hard, as it seems. Take it as a gift and a challenge, not as paint-by-numbers, and it may be more fun. |
|
|
|
Post by tonycamphd on Feb 6, 2015 11:54:24 GMT -6
Hey keymod, it is a kit done oldschool DIY. Get the BOM and the schematic. Go thru the build thread post by post, write down essential information, correction etc. Print out additional hookup information pics. Try to make your mind up what this circuit is all about, and what the sections on the PCBs actually do. Then start building. From the resistors up, small shallow parts first. It is not that hard, as it seems. Take it as a gift and a challenge, not as paint-by-numbers, and it may be more fun. This sounds intimidating when u hear it, but small's right, also when u get it done U'll feel like ur part of a secret society that is very exclusive lol |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 6, 2015 12:06:47 GMT -6
 Reminds me of a secret hidden forum, i have an account for. And no, this is not here or GDIY, and certainly not purple. But pro audio DIY. Can't tell you more, or i'll have to kill you afterwards.
|
|
|
|
Post by mulmany on Feb 21, 2015 21:31:04 GMT -6
Finally have mine on the bench. It does not look to bad now... especially after the U76 build, but there are 4 daughter boards.  [/URL] |
|
|
|
Post by NoFilterChuck on Feb 22, 2015 17:53:57 GMT -6
put all the components that are under the opamps on the BOTTOM of the PCB. don't put them underneath the opamps on the top side.
|
|
|
|
Post by mulmany on Feb 22, 2015 18:42:54 GMT -6
Yeah... you can't tell from the pic but they are underneath. This is actually coming together much easier then I thought.
Question though... on the dual LED s I have blue and green, I used the resistor for the green side since that will be the in position and on 99% of the time. I went with a 1.2k instead of the 680 ohm for the blue. Is that the correct way to figure it. This is my first build using dual leds.
|
|
|
|
Post by NoFilterChuck on Feb 23, 2015 0:10:59 GMT -6
ask on GroupDIY's build thread for the project, so all of the other builders can chime in.
|
|
|
|
Post by keymod on Feb 23, 2015 6:42:58 GMT -6
Do you find the Panavise indispensable? What model is yours? Where can I buy one?
|
|
|
|
Post by mulmany on Feb 23, 2015 7:05:18 GMT -6
Do you find the Panavise indispensable? What model is yours? Where can I buy one? Yes the Panavice is great. Could not work without one now. It's the circuit board holder, don't remember the actual part number. The vice and the Hakko 808 desoldering gun are two thing that once you use them you will never go back. I think I got it on Amazon. |
|
|
|
Post by tonycamphd on Feb 23, 2015 8:37:03 GMT -6
Do you find the Panavise indispensable? What model is yours? Where can I buy one? Yes the Panavice is great. Could not work without one now. It's the circuit board holder, don't remember the actual part number. The vice and the Hakko 808 desoldering gun are two thing that once you use them you will never go back. I think I got it on Amazon. +1 Hakko 808, been wanting a panavise |
|
ericn
Temp
Balance Engineer
Posts: 16,107 
|
Post by ericn on Feb 23, 2015 12:11:03 GMT -6
I have the cheap Harbour freight Panavise clone not bad for the price!
|
|
|
|
Post by tonycamphd on Feb 23, 2015 12:39:08 GMT -6
|
|
|
|
Post by mulmany on Feb 23, 2015 17:48:00 GMT -6
Tony, with all the diy you have done I am surprised you don't have the circuit holder. Let's you spin the board upside down without taking it out. Priceless! I bought the mini vise for doa and connector work. |
|
). This build seems more difficult than I'm used to, without any step-by-step instructions, so I'm a little hesitant. Anything I should look out for?
Reminds me of a secret hidden forum, i have an account for.