Konnichiwa,
Up to now my take on "fixing up" 78XX/79XX regulators has always been to use LM1085 or LT1085/1033 fixed voltage regs, with suitable re-pinning. Does anyone know any particulary good sounding 7805/7815/7915 et al regualtor series that are a worthwhile upgrade over generic JRC ones?
And no, commercial drop in regulator PCB's like those from Audiocom are not an option here.
Any thoughts and experiences are very welcome.
Sayonara
Up to now my take on "fixing up" 78XX/79XX regulators has always been to use LM1085 or LT1085/1033 fixed voltage regs, with suitable re-pinning. Does anyone know any particulary good sounding 7805/7815/7915 et al regualtor series that are a worthwhile upgrade over generic JRC ones?
And no, commercial drop in regulator PCB's like those from Audiocom are not an option here.
Any thoughts and experiences are very welcome.
Sayonara
It's not exactly that type, but Panasonic AN8005 sounds much better than LM7805 (even from National). It actually sounds better than Elso's discreet regulator in my DAC.
Recently, in ML38 preamp, I replaced 78XX/79XX regulators with low dropout type from National, LM2937ET and LM2990T, and those are much better sounding than the other ones. This was also a recommended upgrade from 38 to 380 version.
All those regulatos come in diffferent voltage ratings as well.
Recently, in ML38 preamp, I replaced 78XX/79XX regulators with low dropout type from National, LM2937ET and LM2990T, and those are much better sounding than the other ones. This was also a recommended upgrade from 38 to 380 version.
All those regulatos come in diffferent voltage ratings as well.
An8005
Could I buy one or two from you? I have nothing else to order from Digikey.
I presume "AN8005 sounds better" is meant for the TDA1543. It strongly depends on the application which regulator sounds better. For analog stages I am using a Kwak-Super-Regulator but that one is a disaster for the DAC chip....
Kusunoki is using the higher rated Toshiba TA78DL05S for the TDA1543.
I was always confused why Madrigal was using such simple regulators like 78xx....
Hello Peter, great but these AN8005's are rated 50mA, a bit low on the edge for a TDA1543 drawing 50mA typ. and 60mA max.Peter Daniel said:
Could I buy one or two from you? I have nothing else to order from Digikey.
I presume "AN8005 sounds better" is meant for the TDA1543. It strongly depends on the application which regulator sounds better. For analog stages I am using a Kwak-Super-Regulator but that one is a disaster for the DAC chip....
Kusunoki is using the higher rated Toshiba TA78DL05S for the TDA1543.
I was always confused why Madrigal was using such simple regulators like 78xx....
Re: An8005
I would be definitely interested. Thanks for the offer.
Yes, my observation was with regard to TDA1543 DAC only (as I compared them only there) , although I'm using those regulators in the receiver and input driver as well.
I noticed that Kusunoki is using different regulator on DAC chip, but I tried AN8008 and so far after at least 6 months of constant power on, I didn't experience any problems. It doesn't even get hot, it's only slightly warm. I'm using 8V type and don't exceed 12V at the input. To me that regulator sounds as good as they get and much better than generic 7808 and better than LM7808. Although Guido removes printing from his regulators, I suspect he is using LM type as the case looks exactly the same.
I also like this regulator with a Guido clock. BTW (I'm using Guido clock because I like the small package) I didn't really compared it to your clock.
I have no problem with getting them for you. Just tell me what value you need and ow many. They are so cheap that you don't even have to send me the money
Regardin ML upgrade, those new regulators brought improvement, more open and less compressed sound. I can't really say how much it was due to diodes rplacement and how much regulators changed things. However the biggest improvement came when I installe dnew electrolytics (with smaller capacitance). The sound change drastically and I prefer the preamp in the system now, than feeding amp directly. Pretty strange, huh? But I guess it's true when they say that you actually need a preamp for best sound.
What I'm getting into is that those new regulators (LM2937ET and LM2990T) sound very good in that preamp now, so they are probably worth a try.
tiroth said:
I would be definitely interested. Thanks for the offer.
Elso Kwak said:
Hello Peter, great but these AN8005's are rated 50mA, a bit low on the edge for a TDA1543 drawing 50mA typ. and 60mA max.
Could I buy one or two from you? I have nothing else to order from Digikey.
I presume "AN8005 sounds better" is meant for the TDA1543. It strongly depends on the application which regulator sounds better. For analog stages I am using a Kwak-Super-Regulator but that one is a disaster for the DAC chip....
Kusunoki is using the higher rated Toshiba TA78DL05S for the TDA1543.
I was always confused why Madrigal was using such simple regulators like 78xx....
Yes, my observation was with regard to TDA1543 DAC only (as I compared them only there) , although I'm using those regulators in the receiver and input driver as well.
I noticed that Kusunoki is using different regulator on DAC chip, but I tried AN8008 and so far after at least 6 months of constant power on, I didn't experience any problems. It doesn't even get hot, it's only slightly warm. I'm using 8V type and don't exceed 12V at the input. To me that regulator sounds as good as they get and much better than generic 7808 and better than LM7808. Although Guido removes printing from his regulators, I suspect he is using LM type as the case looks exactly the same.
I also like this regulator with a Guido clock. BTW (I'm using Guido clock because I like the small package) I didn't really compared it to your clock.
I have no problem with getting them for you. Just tell me what value you need and ow many. They are so cheap that you don't even have to send me the money
Regardin ML upgrade, those new regulators brought improvement, more open and less compressed sound. I can't really say how much it was due to diodes rplacement and how much regulators changed things. However the biggest improvement came when I installe dnew electrolytics (with smaller capacitance). The sound change drastically and I prefer the preamp in the system now, than feeding amp directly. Pretty strange, huh?
But I guess it's true when they say that you actually need a preamp for best sound.What I'm getting into is that those new regulators (LM2937ET and LM2990T) sound very good in that preamp now, so they are probably worth a try.
Re: Re: AN8005
Thanks for the very kind offer. I will you my address. My best guess is Guido is using a LM317 from Onsemi but the Wenzel circuit could change the sound. Can't say what is the best regulator for a clock.....
As you are using the AN8008 for such a long time I am confident it will keep healthy in my DAC.
Hi Peter,Peter Daniel said:
I would be definitely interested. Thanks for the offer.
Yes, my observation was with regard to TDA1543 DAC only (as I compared them only there) , although I'm using those regulators in the receiver and input driver as well.
I noticed that Kusunoki is using different regulator on DAC chip, but I tried AN8008 and so far after at least 6 months of constant power on, I didn't experience any problems. It doesn't even get hot, it's only slightly warm. I'm using 8V type and don't exceed 12V at the input. To me that regulator sounds as good as they get and much better than generic 7808 and better than LM7808. Although Guido removes printing from his regulators, I suspect he is using LM type as the case looks exactly the same.
I also like this regulator with a Guido clock. BTW (I'm using Guido clock because I like the small package) I didn't really compared it to your clock.
I have no problem with getting them for you. Just tell me what value you need and ow many. They are so cheap that you don't even have to send me the money
Regardin ML upgrade, those new regulators brought improvement, more open and less compressed sound. I can't really say how much it was due to diodes rplacement and how much regulators changed things. However the biggest improvement came when I installe dnew electrolytics (with smaller capacitance). The sound change drastically and I prefer the preamp in the system now, than feeding amp directly. Pretty strange, huh?
What I'm getting into is that those new regulators (LM2937ET and LM2990T) sound very good in that preamp now, so they are probably worth a try.
Thanks for the very kind offer. I will you my address. My best guess is Guido is using a LM317 from Onsemi but the Wenzel circuit could change the sound. Can't say what is the best regulator for a clock.....
As you are using the AN8008 for such a long time I am confident it will keep healthy in my DAC.
I made a ton of these little adaptors up for myself but they are not really of saleable quality (dremeled apart). If you'd still like some, send me an email, I'd be happy to send some for free. I toyed with the idea of getting some made up for sale, but I don't think there is much interest.fmak said:
Recently, in ML38 preamp, I replaced 78XX/79XX regulators with low dropout type from National, LM2937ET and LM2990T, and those are much better sounding than the other ones. This was also a recommended upgrade from 38 to 380 version.
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Who recommends the upgrade? The LM 2973ET is for automobile use and have poor noise and mediocre other characteristics.
Is the noise affecting the sound in some way?
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Who recommends the upgrade? The LM 2973ET is for automobile use and have poor noise and mediocre other characteristics.
Is the noise affecting the sound in some way?
Konnichiwa,
Hmmm. I have on previous occasions noticed that regulators that are "poor" on the Datasheet can sound rather good. Often "good" regulators have such a low output impedance that they swamp any bypass capacitor sonics and determine the sound, usually in a negative sense.
I am still looking for the JRC Datasheets, so I have not compared the measured performance, but "poor" measured performance (ripple rejection, noise) is often a result of lower (but usually wider bandwidth) open loop gain, which may improve the relative behaviour of the overall circuit at high frequencies.
I shall order a few samples of these Regs, just to see, they might be exactly what the doctor ordered, ThanX Peter.
Sayonara
fmak said:
Hmmm. I have on previous occasions noticed that regulators that are "poor" on the Datasheet can sound rather good. Often "good" regulators have such a low output impedance that they swamp any bypass capacitor sonics and determine the sound, usually in a negative sense.
I am still looking for the JRC Datasheets, so I have not compared the measured performance, but "poor" measured performance (ripple rejection, noise) is often a result of lower (but usually wider bandwidth) open loop gain, which may improve the relative behaviour of the overall circuit at high frequencies.
I shall order a few samples of these Regs, just to see, they might be exactly what the doctor ordered, ThanX Peter.
Sayonara
Re: Re: An8005
That was always my impressions too.
Talking GCs, no matter if it's an IGC or a NIGC, it just likes a good pre.
It's better than the chip alone with a pot, even a good one.
Purists will kill me.
Peter Daniel said:
The sound change drastically and I prefer the preamp in the system now, than feeding amp directly. Pretty strange, huh?
That was always my impressions too.
Talking GCs, no matter if it's an IGC or a NIGC, it just likes a good pre.
It's better than the chip alone with a pot, even a good one.
Purists will kill me.
Kuei Yang Wang said:Konnichiwa,
Hmmm. I have on previous occasions noticed that regulators that are "poor" on the Datasheet can sound rather good. Often "good" regulators have such a low output impedance that they swamp any bypass capacitor sonics and determine the sound, usually in a negative sense.
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Or may be one is loosing 1 or more bits thru, noise.
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