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really well? that is a bit ambiguous :) what difference did it make? how did the LL1530 work out?

i think i figured out whats broken on the 286S unit, and I've got the part on the way to fix it. I'm pretty much done with my initial mods and repairs on the 286A unit. Seriously someone at harman needs a good talking to. some of the implementation flaws are just horrendous. and it isn't a...

its easy for me to just see it on the DSA which makes it really easy to see if changes actually make any differences. :) i got started with this madness when i had nise using a MXL BCD-1 dynamic into a focusrite at high gains doing voice over. don't get me wrong i got around it by sending the...

I'll have to see what i can get my hands on :) for noise with processing in i see about ~30db higher noise on the A model with processing on and the output gain at 0db. though the complete story is in the table below. there is a gain balance adjustment for processing enabled vs disabled. so...

I just realized the way i put it i may not have communicated what i intended. i meant to say the noise on the A model is significantly lower then the S mode. but again ... it might be jsut a bad unit.. still need to fix the S model

i kind of gathered there is a bit of animosity toward you over there. i jumped over here as you were the only one rally participating on that thread.. well participating and knowing what there talking about. kind of got tired of being trolled by people 1/2 understanding of what is going on. i...

been there done that - this is "scoobis" from the other forum. :)

too bad no one has la DSA or an audio precision analyzer etc.. if the meter can limit the measured spectrum to 20k it wold give me an idea if its in spec. oh and not so sure about the AI being quieter lol..... take the DBX286a for example. at +30db gain, the noise floor is at -92.7dBu...

drtechno are you able to do have the tools to do some calibrated noise measurements on your unit. looking at the DBX286S vs the A model the noise appears to be a lot higher with processing bypassed though, could just be this unit needing some work, as it is looks like the processor section is...

It arrived yesterday! I'll get it on the bench tomorrow. i bet someone blew the output op-amp. if so that's a quick and easy fix. I did pop the hood. i do like the layout changes, short runs from the pot to the amp circuit is a big plus. also, extra room in ther for mods. surface mount stuff...

maybe you can talk him into sending me one too ;) i saw the XL, but thought the extra headroom was overkill, though, i couldn't see any downsides to it.

lundahl ll1578?

HA - just scored a DBX286S for 25 bucks - with a non working processor section. :D I should be able to fix that, and i can compare the preamp part even without repairing it.

Currently using a NOS AUDIO "mic booster microphone activator" yea i know not well known. got one while they were/are blowing them out. internals is basically the cloudlifter circuit, right down to using sk170's, and hence the reason they are discontinuing manufacturing. does the job. The...

For me, id love for the unit to be able to operate at high gain with a low noise floor for use with dynamic mics. So far, i've not had my hands on a high gain (50-60db) and low noise preamp that uses an instrumentation amplifier up front. not that i am anti instrumentation amps. for me, on my...

Not so fast..... i would assume they replaced the single instrumentation amplifier with discreet components. this would have several advantages over using a single chip solution like an ina163 / ssm2017 / ssm 2019 / that1510 etc. namely, you can achieve higher bandwidth, lower noise...

Thanks!

Those are lm339's or ST's equivalent. i noticed the changed to using that 4805's for the vca / rms cips. also changed to a jrc4580 interesting changes. I would be curious what the rest of the board uses. if you pop the hood again id love to see some more pics as i cant see the chip numbers for...