I need to knock up some stereo (domestic) line level amps with a gain of
0-10dB.
Using a +/-15 volt supply. Anything better than the ol' NE 5543 for this
these days?

--
*I don't suffer from insanity, I enjoy every minute of it *

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) wrote:
I need to knock up some stereo (domestic) line level amps with a gain of
0-10dB.
Using a +/-15 volt supply. Anything better than the ol' NE 5543 for this
these days?



The 5534 is a lot better for that than the 5543.

Cheers

Ian

In article ,
Ian Bell wrote:
Dave Plowman (News) wrote:
I need to knock up some stereo (domestic) line level amps with a gain
of 0-10dB. Using a +/-15 volt supply. Anything better than the ol' NE
5543 for this these days?



The 5534 is a lot better for that than the 5543.

But I'm going to use it with +&- reversed...

--
*Never underestimate the power of very stupid people in large groups *

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) wrote:
In article ,
Ian Bell wrote:
Dave Plowman (News) wrote:
I need to knock up some stereo (domestic) line level amps with a gain
of 0-10dB. Using a +/-15 volt supply. Anything better than the ol' NE
5543 for this these days?



The 5534 is a lot better for that than the 5543.

But I'm going to use it with +&- reversed...



Better remember to reverse your speaker cables to compensate ;-)

BTW, I think there is little if anything to beat the 5534

Cheers

Ian

In article , Dave Plowman (News)
scribeth thus
I need to knock up some stereo (domestic) line level amps with a gain of
0-10dB.
Using a +/-15 volt supply. Anything better than the ol' NE 5543 for this
these days?


The ole 5534 and 5532 are still very good and easy to use for that sort
of app Dave...
--
Tony Sayer

In article , Dave Plowman (News)
wrote:
I need to knock up some stereo (domestic) line level amps with a gain of
0-10dB. Using a +/-15 volt supply. Anything better than the ol' NE 5543
for this these days?

FWIW I always preferred the Hitachi 12017. But I realise that this is a
somewhat unusual choice. :-)

Slainte,

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

"Jim Lesurf" wrote in message

In article , Dave Plowman
(News) wrote:
I need to knock up some stereo (domestic) line level
amps with a gain of 0-10dB. Using a +/-15 volt supply.
Anything better than the ol' NE 5543 for this these days?

FWIW I always preferred the Hitachi 12017. But I realise
that this is a somewhat unusual choice. :-)

Looks like it is purpose developed for RIAA preamps.

It seems to be happy with somewhat higher VCC.

Reading the data sheet, I see no info about one of the NE5532/NE5534's long
suits, which is low distortion into low impedance loads.

In article , Arny
Krueger
wrote:
"Jim Lesurf" wrote in message

In article , Dave Plowman (News)
wrote:
I need to knock up some stereo (domestic) line level amps with a gain
of 0-10dB. Using a +/-15 volt supply. Anything better than the ol' NE
5543 for this these days?

FWIW I always preferred the Hitachi 12017. But I realise that this is
a somewhat unusual choice. :-)

Looks like it is purpose developed for RIAA preamps.

Yes. That was the intent of Hitachi. :-)

However experiment showed that with suitable tweaking of the stabilisation
network it works nicely as a buffer of voltage gain stage.

It seems to be happy with somewhat higher VCC.

Yes. IIRC I used to use it with +/-20V lines.

Reading the data sheet, I see no info about one of the NE5532/NE5534's
long suits, which is low distortion into low impedance loads.

Afraid I can't recall all the measurements I made. But the specs for the
Armstrong 732 showed I got less than 0.005% 20Hz-20kHz into the 10k IHFA
load. For up to over 10Vrms IIRC.

That was of course going though more than one 12017. I think it also worked
fine into much lower loads than 10k provided you didn't ask for +/-20V. And
I think it was OK down to about 1k load provided you only wanted a volt or
two. But I can't now recall details. Certainly at the time I preferred it
to the competing op amps.

I guess most people never considered trying it as a general amp due to the
presentation being for RIAA. But I noticed the high rail, low noise, etc,
and found it responded well to being experimented with. Hence came to
prefer it.

Slainte,

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

"Jim Lesurf" wrote in message

In article
, Arny
Krueger
wrote:
"Jim Lesurf" wrote in message

In article , Dave
Plowman (News) wrote:
I need to knock up some stereo (domestic) line level
amps with a gain of 0-10dB. Using a +/-15 volt supply.
Anything better than the ol' NE 5543 for this these
days?

FWIW I always preferred the Hitachi 12017. But I
realise that this is a somewhat unusual choice. :-)

Looks like it is purpose developed for RIAA preamps.

Yes. That was the intent of Hitachi. :-)

However experiment showed that with suitable tweaking of
the stabilisation network it works nicely as a buffer of
voltage gain stage.

It seems to be happy with somewhat higher VCC.

Yes. IIRC I used to use it with +/-20V lines.

Reading the data sheet, I see no info about one of the
NE5532/NE5534's long suits, which is low distortion into
low impedance loads.

Afraid I can't recall all the measurements I made. But
the specs for the Armstrong 732 showed I got less than
0.005% 20Hz-20kHz into the 10k IHFA load. For up to over
10Vrms IIRC.

5534s and 5532s can provide 10 volt signals into 1K ohm loads, even at
high frequencies. This op amp looks marginal for professional use.

That was of course going though more than one 12017. I
think it also worked fine into much lower loads than 10k
provided you didn't ask for +/-20V. And I think it was OK
down to about 1k load provided you only wanted a volt or
two. But I can't now recall details. Certainly at the
time I preferred it to the competing op amps.

Looks good for consumer and "in the box" applications. In pro applications,
many designers would use 5532s for output buffers, following it.

I guess most people never considered trying it as a
general amp due to the presentation being for RIAA. But I
noticed the high rail, low noise, etc, and found it
responded well to being experimented with. Hence came to
prefer it.

It is hard to tell how its noise performance shapes up in professional
applications, and flat response.

In article , Arny
Krueger
wrote:
"Jim Lesurf" wrote in message
[snip 12017 discussion]

I guess most people never considered trying it as a general amp due to
the presentation being for RIAA. But I noticed the high rail, low
noise, etc, and found it responded well to being experimented with.
Hence came to prefer it.

It is hard to tell how its noise performance shapes up in professional
applications, and flat response.

Well, the measurements I made led to the spec that the preamp using them
had a SNR of 80dB for MM (RIAA) and 92dB ref to 150mV for line inputs. (And
of course was OK for signals up to 10Vrms, so gave a decent SNR for CD
Audio. Although that did arrive *after* the amp was designed I did have it
in mind.)

As previously explained this was going though three 12017s for RIAA and two
for line inputs. The response was flatter than 0.2dB over 20-20k simply as
a result of the capacitor values, etc, chosen.

I have no quarrel with people using 5534's, etc, though. :-)

Just that from my own experience I'd be inclined to recommend that others
don't dismiss alternatives they haven't actually experimented with for
themself. That way you can easily miss something you might have preferred.
:-)

Oh, and being SIL with a pin gap, the HA12017 can also save space and avoid
incorrect insertions. But that obviously doesn't matter much in most
domestic cases since most space will be for passive components anyway.

Slainte,

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html