Here is my Balanced H2V2, built with unity gain. I used it with an ALEPH J amp and Balanced BA2018 preamp with B&W 804D speakers. Loved how it filled the room with sound, 3H is high, I could adjust the 2H to 1%, however the 3H is higher than I would like.
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Target system currently has both preamp and amp operating balanced.
Way out of my depth here but am guessing balanced INs and OUTs complicates design and increases cost of construction considerably?!
May be less expensive to get some added H2's from a tubed preamp. 🤔
Just saw the pics of your H2V2...very nice!
Do you have construction notes? Would measurement beyond a digital multimeter be required?
Do you have construction notes? Would measurement beyond a digital multimeter be required?
You will need to measure distortion using an XLR connector to an external soundcard and then into a laptop running REW software. Also, a very, very low distortion function generator is needed for the 1K sine wave signal. You adjust the + side and - side to get the desired H2 with the lowest H3 for each channel.
Way beyond both my technical ability and available test equipment. Regardless, I DO appreciated your "H2V2 101"!
You don’t have to do dialisys to enjoy the circuit. Operating voltages to get you safely within happy listening boundaries of distortion are provided by papa, and perfectly achievable without a giant test rig.
Of course, going «full circuit» will enable you do perfect the distortion residuals. If perfection is the goal. If you just wanna be a happy listener, I’d give the circuit a go without nothing but a DMM or two.
Not uncommon for balanced circuits with H3 replacing H2 / odd replacing even. But happy still?
I will insert the H2 at unity gain between preamp and Bryston amp. Will the H2 have power to drive the Bryston to full power?
Bryston 3B st:
Input sensitivity: 1V for 120Wpc into 8 ohms; 2V for full output, balanced. Input impedance: 50k ohms unbalanced, 20k ohms balanced.
Bryston 3B st:
Input sensitivity: 1V for 120Wpc into 8 ohms; 2V for full output, balanced. Input impedance: 50k ohms unbalanced, 20k ohms balanced.
What are the considerations when using H2 in pro/installed sound with generally higher line level signals?
I believe the H2 has fairly high distortion at a 2V output. It's much lower at 1V.
You should try it to see if it's too high to your liking at the level you want to use it at.
You should try it to see if it's too high to your liking at the level you want to use it at.
Thank you!
My Bryston amp spec says that Input sensitivity: 1V for 120Wpc into 8 ohms for full output (unbalanced)
Will the H2 be operating as designed and set up (at 1% distortion) with, lets say, 1V to 1.3V on it's outputs, driving my amp to full power? Should I follow the H2 with a buffer that has some gain? Which buffer?
My Bryston amp spec says that Input sensitivity: 1V for 120Wpc into 8 ohms for full output (unbalanced)
Will the H2 be operating as designed and set up (at 1% distortion) with, lets say, 1V to 1.3V on it's outputs, driving my amp to full power? Should I follow the H2 with a buffer that has some gain? Which buffer?
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IF (that's a big if) I got it correctly, H2 was designed to operate at 0.7V, which wouldn't fully load your Bryston, but at 84W you'd very probably well served?
I think you’re correct, but this is a commercial installation. Sometimes it’s good to have the ability of full output. So what would be a good solution to get 2 volts for example? A buffer after the h2?
No, a buffer does not amplify, but makes sure the impedance is "good".
If you want / need more juice, you'll need a gain-stage, a preamp of sorts (or a preamp without the controls).
And you may be correct in that with > 1 V of output, you'd have headroom?
But I haven't really understood much more than that...
If you want / need more juice, you'll need a gain-stage, a preamp of sorts (or a preamp without the controls).
And you may be correct in that with > 1 V of output, you'd have headroom?
But I haven't really understood much more than that...