Bobo le Chat has a UGS, balanced preamp, and uses it on the UCD. He told me that's it's pretty nice !
Now, i am using them on the pre of my Yamaha 4600, awaiting the PCB of my UGS !!!!! I think after 2 weeks i will be able to feel the difference. Roger told me when we use the UCD on unbalanced there is a "lost" of 6 db. What about this...?🙄 I need to put the pot of my preamp little bit more up than before.....
Wait an see !😎
Now, i am using them on the pre of my Yamaha 4600, awaiting the PCB of my UGS !!!!! I think after 2 weeks i will be able to feel the difference. Roger told me when we use the UCD on unbalanced there is a "lost" of 6 db. What about this...?🙄 I need to put the pot of my preamp little bit more up than before.....
Wait an see !😎
When is the LM4562 edition going to be available? Or was I imagining reading a post that said that.
Hi there,
i puggled my UCD on my balanced UGS preamp. Juste to remind, the UCD have straps, power supply and LM4562 mods. My godness !!!!!😱 What a sound !!!!!!!It's powerful, neat, clear, detailled. I enjoy them a lot !😉
i puggled my UCD on my balanced UGS preamp. Juste to remind, the UCD have straps, power supply and LM4562 mods. My godness !!!!!😱 What a sound !!!!!!!It's powerful, neat, clear, detailled. I enjoy them a lot !😉
Daveis said:
Next week we will receive the first batch from our assembler.
A couple of days later we will ship them out..... 😉
Cheers,
Jan-Peter
breizheau said:
Ah...you also like the LM4652! In the new UcD180HG we will also use this wonderfull nice op amp, together with a lot of 'other' improvements.... 😎
Cheers,
Jan-Peter
Hi !
I've read on another thread that without opamp there is 10 dB less gain. In my application I don't need much gain, is there some drawbacks to bypass the opamp. 😀
Maybe it is quite a stupid idea
I just need one or two watts at the output at full listening level so at the moment I use attenuators at the input of my amps for the midrange section
regards
Marc
mbon said:
Hi !
I've read on another thread that without opamp there is 10 dB less gain. In my application I don't need much gain, is there some drawbacks to bypass the opamp. 😀
Maybe it is quite a stupid idea
I just need one or two watts at the output at full listening level so at the moment I use attenuators at the input of my amps for the midrange section
regards
Marc
Is possible, but if you connect your source direct to the UcD Modulator you the big disadvantage is that the input impedance of the UcD Modulator is not symmetrical!
The HG version with the LM4562 sounds very neutral.... 😉
Jan-Peter
Jan-Peter said:
Thanks,
so let's say I will buy the new UCD180HG (in fact it is sure but when
?)is it still an (good ?) option to change Rg, let's say Rg=Rf to have low gain :
http://www.hypex.nl/docs/gainappnote.pdf
I mean is it better to change Rg or to add another attenuation circuit on the input ?
many thanks for your help. I am refreshing the home page hypex.nl every day looking at the 180HG 🙂
ucd considerations
I started this other thread hoping to get some answers to some simple questions like the one above, maybee some contributions would be great 🙂 🙂 🙂
"slice it dice it any way you like i!"
I started this other thread hoping to get some answers to some simple questions like the one above, maybee some contributions would be great 🙂 🙂 🙂
"slice it dice it any way you like i!"
Re: ucd considerations
oops forgot this
http://www.diyaudio.com/forums/showthread.php?s=&threadid=102010
tawn10 said:
oops forgot this
http://www.diyaudio.com/forums/showthread.php?s=&threadid=102010
GAIN
HELP!
I am a remedial
I am considering hooking a pair of PGA2310's direct to the UCD180's input (bypassing the opamp) or maybee just one, my question is weather the gain will be suitable for the input, +31.5dB to –95.5dB, I really could do with knowing the input sensitivity of the modulator and what this means in terms of required input level (and how to calculate this) I dont even know the relationship between Db and RMS input.
Please help!
HELP!
I am a remedial
I am considering hooking a pair of PGA2310's direct to the UCD180's input (bypassing the opamp) or maybee just one, my question is weather the gain will be suitable for the input, +31.5dB to –95.5dB, I really could do with knowing the input sensitivity of the modulator and what this means in terms of required input level (and how to calculate this) I dont even know the relationship between Db and RMS input.
Please help!
Hi
I´m new at this forum, but i find it very intresting here, and i can find ansvers on many issues.
Still I have a question
Can anyone tell me if i can use 24 + 24vac 300VA toroid to power up a ucd 180? It will give me about +-34vdc
Will it decrease the power, or increase the distortion.
Is there any one who knows?
Gustaf
I´m new at this forum, but i find it very intresting here, and i can find ansvers on many issues.
Still I have a question
Can anyone tell me if i can use 24 + 24vac 300VA toroid to power up a ucd 180? It will give me about +-34vdc
Will it decrease the power, or increase the distortion.
Is there any one who knows?
Gustaf
UcD 180
Dear Gustav
That's not a problem but take care about the electrolytics. They should handle over 40 Volts! Also have a look at www.hawkaudio.nl/d402.htm. The schematics are in the dowloadable building instructions. That amp has a 2 x 22 Volt supply and easily outputs 40 Watts into 8 Ohm and 70 Watts into 4 Ohm. It's in use by a lot of audio diy amateurs around the world and all are happy. If the connected loudspeaker has an efficiency over 87 dB/1 W/1 m then you might blow your windows!
John
Gjander said:Hi
I´m new at this forum, but i find it very intresting here, and i can find ansvers on many issues.
Still I have a question
Can anyone tell me if i can use 24 + 24vac 300VA toroid to power up a ucd 180? It will give me about +-34vdc
Will it decrease the power, or increase the distortion.
Is there any one who knows?
Gustaf
Dear Gustav
That's not a problem but take care about the electrolytics. They should handle over 40 Volts! Also have a look at www.hawkaudio.nl/d402.htm. The schematics are in the dowloadable building instructions. That amp has a 2 x 22 Volt supply and easily outputs 40 Watts into 8 Ohm and 70 Watts into 4 Ohm. It's in use by a lot of audio diy amateurs around the world and all are happy. If the connected loudspeaker has an efficiency over 87 dB/1 W/1 m then you might blow your windows!
John
UcD 180UG
Just to let you know UcD 180UG serial numbers 0001 and 0002 arrived today.
I hope to fit them Sunday and will report back accordingly.
Just to let you know UcD 180UG serial numbers 0001 and 0002 arrived today.
I hope to fit them Sunday and will report back accordingly.
UcD...HG
We're delivering the HG-version in our kits now. It's a major improvement. We already experienced that quality earlier when we used the same LM4562 in our modified models.
In our D-701-HG we also implanted shunt regulation for the power supply of the input circuit. That amplifier now equals (or even outperforms) almost any tube amp even SET ones.
Have a look at http://www.hawkaudio.com/D702.htm
We're delivering the HG-version in our kits now. It's a major improvement. We already experienced that quality earlier when we used the same LM4562 in our modified models.
In our D-701-HG we also implanted shunt regulation for the power supply of the input circuit. That amplifier now equals (or even outperforms) almost any tube amp even SET ones.
Have a look at http://www.hawkaudio.com/D702.htm
Ucd180 potentiometer
Hi friends,
This is my first post!😀
I'm building a ucd180st amplifier.
For volume control in line in, can i use a double log potentiometer 100k value? I ask this because i've a new logarithmic alps rk27 100k. Thanks a lot!!
Hi friends,
This is my first post!😀
I'm building a ucd180st amplifier.
For volume control in line in, can i use a double log potentiometer 100k value? I ask this because i've a new logarithmic alps rk27 100k. Thanks a lot!!