JLM AUDIO

d.redfern wrote:I'm gonna buy this power transformer its got 2x15Vac secondarys and is rated at 80VA, th ac/dc calculator says I need 64VA so I'm guessing it'll be fine, it from rsonline, stock code 223-7973. Is there an problm with getting a larger VA rated transformer?
Cheers
Doug

Yep that will be perfect

Hi Joe, yep - all good re; pin#1's... Power is on, and staying on, Mac LINK LED works when in 'link' mode, and and Dingo's are measuring spot on +/- 24v at VS+/- . The IDC Header on the left dingo cable that I re-terminated was the only thing that looked a little sus, even though it tested ok with ...

Hi again Joe, I got the new zd's and cable ends, thankyou! And thankyou for the follow up phone call, sorry I missed it. I've installed the 4 x new zd's on the Dingos, re-tested and I'm getting +/-24v at VS+/- respectively on the Dingos. So that's all good again...!! Ok cool Before I turn on the po...

Joe Hello Is there a Schematic of the Regurgitator pcb w/component # and/or values ? If not could you please tell me what components are in the audio path and or the power path? Thanks Yes I can email you a copy. Power parts are C7, C8, ZD1, ZD2, R14, R15. Everything else is audio path. Please do n...

chrisp wrote:

Joe Malone wrote:give these pres some real fat Neve like Mojo

... or you might instead just build yourself some BA's for fat AND silky

So true . Just trying to save this gear from being used as door stops or dust collecting rack filler.

Ok so I will only need a 2X15V trannie. I thought I would have needed something like a 25V or 28V trannie. When I put in rounded up estimate amps in for the parts it gives me 34C/W for the 15Vrails and 20C/W for the 9V rails and 84C/W for the phantom power rail. Will attaching regulators to the cas...

JLM MONO Ver2 mic pre is a compact tough transformer balanced input mic pre with electronic balanced output which can run on 2 x 9v Normal Alkaline or Rechargeable NiMH batteries and provide 18v phantom power which will run most modern condenser microphones or you can use our 48v 520mA SMPS which ca...

But in the ribbon wiring photo's the ribbon has the red pin1 on the correct side? Did you reterminate the ribbon cable header? Yes - when I realised the header on the Dingo board was on backwards and the same as for the Mac Link board (an error by me), I did re-terminate both ends with a new one on...

What performance difference does the V8 opamp yield in the BAN pre? Using, say, 4 2604's as opposed to just one. For that matter, using 4 of any opamp instead of one. What difference does the increase produce? V8 is great for driving very long cable runs or step up output transformers. Other wise I...

Hi Joe, thankyou again for your prompt reply! I've tested the 4 x ZD 24v1w and the two on the left Dingo are measuring 0.0 ohms, and one on the right dingo measures 1.4k...(the other 9.98k - ok?)...so best to replace the first three...?? Sent you 8 x 24v 1w zeners and IDC cable end overnight today....

Mute works great and silently with the two bottom legs removed but when the 48v is engaged and switching mute on and off massive click occurs. Any remedy for that ? grounding one of the free legs ? thanks Not sure what mic pre input type you have but adding 2 x 100k. One between each middle switch ...

Hi again, Before I hooked up the Dingo to Mac PCB with the ribbon cables, and before I plugged in the 99v's I tested the V+ & V- as per instructions on the Dingo PCBs; both read +24v and -24v respectively. The green power LED was lit solid on the front panel. OK this proves the dingo and 24v 1w zen...

Hi, a couple of questions, firstly what heat sinks should I use obviously this depends on the voltage drop the regulator has to perform, but in terms of the size as It looks like the regulators are very close together and I fear that I wont be able to get a heat sink thin enough? I need heatsinks b...

Oh - can any one on a Mac open MACSCH.pdf...?? I've tried browsers, Preview, Adobe Reader v8, Word, Photoshop with no luck... Photoshop says; 'doc has security setting which prevent it from being opened' (I'm OSx10.6) Cheers, Nathan... :roll: Need free reader 9.1 or later to open PDF. Not sure what...

But I am not sure what the unbalanced device is that the dingo is connected too? But if it is passive then that is usually fine. The unbalanced out feeds a 5k T pad rotary switch. I would like to have as much headroom as possible on the output. A +21dBu clip point at the unbalanced input would be i...