Sorry for coming to the party 11 years too late. To those who don’t know, DQX-2496* is pro gear utilizing fully balanced inputs & outputs. IME consumer gear using balanced connections tests & sounds better wholesale.
I regret I’m looking for the same solution** using similar* gear, namely several DBX Drive Rack PAs. I want to improve the long connections to dedicated amps & powered subs in my home theatre. IME w/pro equipment, I know balanced is way better.
**I want a simple, compact solution I can build into the amp or powered sub. IME adapters and simple XLR to RCA connections doesn’t work very well or reliably.
I’m not opposed to simply:
1. adding FXLR jacks to the subs and amps
2. connecting leads to/from a disassembled true pro passive balanced/unbalanced device
3. secured w/ cable-tie inside same.
...crude but why not
I have more to say on one or more XLR misconceptions others have posted, but I hafta scoot.
Tony
There were several threads about differential to single-ended conversion over the past 11 years, most in the Analog line forum. The simplest solutions are adding a transformer or a single op-amp differential amplifier.
Would this work? Pitfalls? BTW: XO sends a fairly hot input to this sub, so gain not an issue
https://www.amazon.com/Hosa-MIT-435...ocphy=9011028&hvtargid=pla-442837831817&psc=1
Disassemble.
solder leads to/from both sides
install a FXLR jack to the powered sub’s chassis, etc
If so I’ll eventually do four times.
1000 thanks. Tony
https://www.amazon.com/Hosa-MIT-435...ocphy=9011028&hvtargid=pla-442837831817&psc=1
Disassemble.
solder leads to/from both sides
install a FXLR jack to the powered sub’s chassis, etc
If so I’ll eventually do four times.
1000 thanks. Tony
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It.s probably not what you want as the input impedance is 200 ohms and the output impedance is
50K ohms.The voltage ratio of the input to output is the square root of the impedance ratio.
50K/200 = 250 impedance ratio. the square root of 250 is 15,811. You would have 15.811V out
for every 1V input. You said that the gain is already a bit hot, 15.8 times that level may be way too much.
50K ohms.The voltage ratio of the input to output is the square root of the impedance ratio.
50K/200 = 250 impedance ratio. the square root of 250 is 15,811. You would have 15.811V out
for every 1V input. You said that the gain is already a bit hot, 15.8 times that level may be way too much.
I was wondering whether there wasn't anyone who had done a board for a basic balanced input stage yet - well, what about this one? Bare board $5, kit $15, sounds fair enough to me. The kit comes with a THAT1256 -6 dB gain part, which is also what I'd have recommended; it can also be fitted with the higher-end THAT124x series parts, though I'd think a sub should generally be fine with the 125x. With some elbow grease, you can even fit the THAT120x "InGenius" parts.
It looks like they're keeping all of chassis, power ground and signal ground separate like I would have done. In a sub you generally have other line-level circuitry already (adjustable LPF, phase etc.), so I assume you'll have a +/-15 V or so supply to tap available.
It looks like they're keeping all of chassis, power ground and signal ground separate like I would have done. In a sub you generally have other line-level circuitry already (adjustable LPF, phase etc.), so I assume you'll have a +/-15 V or so supply to tap available.
