Yup.myers1st said:
mike said:
mike said:
Hi Ian, for a LA2A Build from Silent Arts I ve also used Edcor WSM for the Input because they are the recommanded ones, most used - because I think they are cheap and have lots of excellent "Iron" sound, and they do a fantasic job - without any shields. Totally quite, no hum, nothing....
Not really. Transformers don't care what you use them for and if you have used it this way before with good results then I say go for it. They can handle 10V rms which us +22dBu so they are unlikely to saturate.
hi ian. your web that have docs in it has down for so many days. I cant reach it. ThanksNicely done.
When it is finished, would you send me some photos of outside and inside so I can pass them on to my friend Pierre. He hosts a gallery of projects based on my designs:
EZgallery
Cheers
Ian
Hi Sonny - if you mean the DIY section of Ian's website, it was working fine when I was on there a couple of hours ago.
Very Cool! Been looking to make one myself! Would you mind sharing the parts/values?I've read through the posts here several times and still don't believe I have the entire picture if I go the helios line amp for makup gain.
Would it be 2128 straight to a 600:600 transformer?(I see this is already a no after more reading elsewhere)
or 2128 to 22113 to 600:600 transformer?
Or just 22113 to 600:600 transformer will provide enough makeup gain?
Also on the 2128 I don't understand what the FB "output" is exactly. Is it just a resistor to ground and the value sets the gain?
Looks to be so, and also could be replaced with a trimmer as well as R8 on the 22113 could be a trimmer to set gain?
As an experiment, I'm attempting to build the RS127 portion of the schematic on turret board/point to point.
Still waiting on the Carnhill inductor and a 10k:10k input transformer in the mail.
I'm thinking of keeping it passive, going balanced in, then straight out to di on a 1073 clone for now, but if I used an external PSU, I could have makeup gain.
I'm housing it in a small 6x4" hammond case similar in size to the original. Resistors are soldered directly onto the switch. Caps and inductors are the only things on the turret board and the carnhill inductor will be mounted to the case with standoffs. Transformer will be rear mounted.
Here's a pic of my progress so far while I'm waiting on parts!
I used the values from the REDD EQ earlier in the thread. I just removed the Bass and Treble portions leaving only the RS-127 presence EQ.
Very Cool! What are the values of the caps? I have a few of the REDD EQ cards, looking at them, but not so sure which parts are solely for the Bass and Treble.
Here's the turret board layout I made when I built mine - it doesn't include the line amp for makeup gain (you can use whatever you want or just use a di input on a mic pre. Also doesn't include input transformer wiring as that differs depending on what transformer you use. I used the Jensen JT-11P-1 input transformer.
