Well done, and yes, I know exactly how you feel. I do this sort of thing all the time. Anyway, keep us posted on progress. It's what makes the world go round.
Zen:
I have one Iron Pre SE ready to test. How is the Edcor PC 600/15K hooked up? Is this possible on SE or only on BAL Iron?
I came across your BOO on this thread. Is that the way it is done? If so, are they for sale?
Is there a problem with gain on SE if jumper set at 12db with Edcor?
Danke H.
I have one Iron Pre SE ready to test. How is the Edcor PC 600/15K hooked up? Is this possible on SE or only on BAL Iron?
I came across your BOO on this thread. Is that the way it is done? If so, are they for sale?
Is there a problem with gain on SE if jumper set at 12db with Edcor?
Danke H.
speaking of that one, as additional xformer in between Iron Pre (any) and amp itself, as gain booster?
if that is the case - yes, detailing as:
Iron Pre SE to SE amp input - autoformer arrangement, 6V/V gain boost
Iron Pre SE to Bal amp input - xformer arrangement, 5V/V gain boost
Iron Pre Bal to SE amp input - xformer arrangement, 5V/V gain boost
Iron Pre Bal to Bal amp input - xformer arrangement, 5V/V gain boost
see details up; in principle, that's it, but for your specific case - ask for sketch, if needed
I don't have Boo or Pooh pcbs, didn't even think of possibility that someone else is going to ask for them
though - I believe there are Gerbers in thread, you can make your own pcbs if your'e for that option
now, this question allows possibility that your'e actually asking about 600:15K used directly in Iron Pre, in place of 600:600 one
answer is - electrically - you can use it, but only in Iron Pre SE; first morning coffee time, so in this moment I'm thinking that pinout is same for 600:600 and 600:15K; with gain jumper set to 6db, resulting gain from 600:15K being 6V/V; not exactly advisable to set jumper to 12db, I believe buffer will be overburden that way
and , to cover that one too - electrically not possible to use 600:15K in Iron Pre Bal
If allowing the edcor in the SE or BAL Iron Pre without Boo on Perfboard handwired is possible please yes can you provide sketch. I am laying out the IP in the tightest case I have.
Oh. Did not even think that was possible using the Edcor on your IP board. I assumed it , Edcor, would be used on the output , after your board handwired or pc board made specific to hold Edcor. Keeping Cinemags in place. To boost signal your IP already produced.
I may be grossly misinterpreting my understanding as usual as I've never had coffee. But I'm on fresh chemo that lasts two days and crash I will.
Danke again for this pre and all the help you provide wholeheartedhly!
H.
just write exactly which arrangement you need
which Iron Pre to which intermediately placed Edcor to which exact amp
which Iron Pre to which intermediately placed Edcor to which exact amp
I have 2 SE IP and 2 Bal. I can leave one stock and mod the other. And / or buy more if needed.
I wish to bridge one MOFO for full range speakers (100W) and Biamp other. When MOFO boards are back in stock will make another bridged for sub.
I have to finish D/M F4 in one custom case that will be bridged BAL for 100W. Needing gain and 2 Bal Iron Pre to drive it into 8 ohms.
Hopefully other Pass Amps can be driven with stock IP both SEL and BAL.
Parts came in for high gain BA-3 D/M and will test that when finished.
What might help is to reverse the direction that the fins of the heatsink point. Hope it works because I have also chosen the 12v. Haven't fired it up yet. A larger heatsink may be required. I wonder if two of these heatsinks could be used back to back?
They get hot... I wouldn't worry about it unless you intend to operate it au naturel, sans chassis, in the buff, in its birthday suit, etc.
Even then, it could be displayed safely and proudly with little to worry about unless unless you have inquisitive pets, friends, or kids. If you happen to be near a radio tower, I'd also consider 'covering up'...
On a more technical note... the operating junction temp range can be up to 175C... so...
Even then, it could be displayed safely and proudly with little to worry about unless unless you have inquisitive pets, friends, or kids. If you happen to be near a radio tower, I'd also consider 'covering up'...
On a more technical note... the operating junction temp range can be up to 175C... so...
It makes sense as the heatsink used has very short fins.
Probably this one would have been sufficient:
https://dk.rs-online.com/web/p/koleplader/7124311
Probably this one would have been sufficient:
https://dk.rs-online.com/web/p/koleplader/7124311
I tend to think that if you remove the inner one, it won't make a real difference. You could reuse this heatsink somewhere else...
I have done this on the D/M 2/F6 in 5U case for the mosfets. I have plenty of sinks. The small sink I would think stabilizes the larger sink instead of a large washer.
I reworked my layout and now have all mains and transformers to the far left and the two balanced boards to the far right. My only problem is now figuring out the Goldpoint.
Is there any harm placing it like in picture one or two?
I don’t have room to mount it to the front unless I move both boards towards the back of the chassis and I need to put smaller heatsinks on.
Is there any harm placing it like in picture one or two?
I don’t have room to mount it to the front unless I move both boards towards the back of the chassis and I need to put smaller heatsinks on.
Attachments
I sure do appreciate your photos of the build as I am busy building the SE version and trying to make good decisions about placement as well. Goldpoint is a favorite of mine when I can afford it, so it is easy to back your decision to use one. About placement. If in fact there were some sort of problem about placing the control on the front panel, you could consider using a shield around the switch. OTOH, if you decide to mount it toward the rear, that may alleviate the need for shielding should it have been required in the first place. If I understand this build correctly, the switch does not carry signal but simply tells a relay when to close or open. If that is the case, it seems that no real harm would come from the switch placement.