Bruel & Kjaer 2107 Frequency Analyzer

[Ross D Matheson]

Are there any here who know this instrument, or know who might know whether it
could be used for more general audio work, beyond the commented link in this?

Bruel & Kjaer 2107 Frequency Analyzer
http://www.trademe.co.nz/Browse/Listing.aspx?id=136643465

Thanks! ;=})

Ross <in nz, not zz!>

 

[Don Pearce]

Are there any here who know this instrument, or know who might know whether it
could be used for more general audio work, beyond the commented link in this?

Bruel & Kjaer 2107 Frequency Analyzer
http://www.trademe.co.nz/Browse/Listing.aspx?id=136643465

Thanks! ;=})

Ross <in nz, not zz!>

Frankly, you will do a far better, more useful and more accurate job
with a sound card in a PC. This is really of historic interest only.

d

 

[Ross D. Matheson]

[email protected] (Don Pearce) in

Frankly, you will do a far better, more useful and more accurate job
with a sound card in a PC. This is really of historic interest only.

d

Well thanks Don!

It really was just out of interest, (but I am danger of collecting too much
old stuff already, like valve tech gear & ham transceivers, so appreciated!)
and I'm already interested in the possibilities of the soundcards I have. Ta!

RdM

 

[Serge Auckland]

[email protected] (Don Pearce) in


Well thanks Don!

It really was just out of interest, (but I am danger of collecting too
much
old stuff already, like valve tech gear & ham transceivers, so
appreciated!)
and I'm already interested in the possibilities of the soundcards I have.
Ta!

RdM

Adding to Don's very apposite comment, try the RightMark Audio Analyser
software. It works with any sound card and provides either live measurements
or you can record the tests and analyse off-line, so to speak.

http://audio.rightmark.org

S.

 

[Ross Matheson]

Adding to Don's very apposite comment, try the RightMark Audio Analyser
software. It works with any sound card and provides either live measurements
or you can record the tests and analyse off-line, so to speak.

http://audio.rightmark.org

S.

I have downloaded it recently on a networked XP PC but not yet installed it.
[and lots of other programs!] I appreciate the advice, and am already
following it, but I still (for curiousities sake) wondered how much it did.

Museum material? Or is that even unkind to the museum ... ?

I thought I might link these comments back to the auction:- for the vendor!

And viewers.

 

[John Byrns]

Are there any here who know this instrument, or know who might know whether it
could be used for more general audio work, beyond the commented link in this?

Bruel & Kjaer 2107 Frequency Analyzer
http://www.trademe.co.nz/Browse/Listing.aspx?id=136643465

That's really neat, I know something about this instrument but not much
anymore. Forty odd years ago when I was a young wet behind the ears
audio equipment designer we had a Bruel & Kjaer test system of which
this instrument was one part, unfortunately I have forgotten probably
98% of what I once knew. The system consisted of at least three parts,
maybe more that I have forgotten about, all mounted in a rack. First
there was an oscillator like this one, second there was a tracking
filter which had a fractional octave bandwidth, although I forget the
fraction, and finally there was a chart recorder. These parts were all
linked together by a chain drive of some sort IIRC so that they all
tracked one another for making various measurements. The simplest test
would be a frequency response run using the oscillator and the chart
recorder. The chart recorder also worked with a CBS test record for
testing phono pickups, and I used it in this mode to test a lot of phono
pickups.

I'm not sure of what use what the oscillator by itself would be, which
is what the auction appears to be for?


Regards,

John Byrns

 

[Dave Plowman (News)]

I'm not sure of what use what the oscillator by itself would be, which
is what the auction appears to be for?

I don't know this actual equipment, and the pic isn't high enough res. to
tell, but it looks like a combined oscillator and audio level measuring
meter - rather like the Ferrograph test set that we lesser mortals got to
play with. Which I still use for many things - despite modern devices
being smaller and more accurate. At least it doesn't have a keyboard or
mouse. ;-)

 

[Chris Morriss]

I don't know this actual equipment, and the pic isn't high enough res. to
tell, but it looks like a combined oscillator and audio level measuring
meter - rather like the Ferrograph test set that we lesser mortals got to
play with. Which I still use for many things - despite modern devices
being smaller and more accurate. At least it doesn't have a keyboard or
mouse. ;-)

It's combined oscillator and selective-level-meter. As Don said, it's
only of historic interest now, but like most early B&K kit, the build
quality is superb.

 

[Dave Plowman (News)]

It's combined oscillator and selective-level-meter. As Don said, it's
only of historic interest now, but like most early B&K kit, the build
quality is superb.

You say only of historic interest but it might be easier to use on the
bench than setting up a PC there.

I find my Ferrograph very useful for all number of things - after all it
was used for audio setting up and measurement in the '80s and those
standards are still good enough for many things today. Not lab standard
measurement for sure, but day to day stuff. And it's built like a tank -
unlike a PC sound card. I'd say the same applies to the B&K.

 

[Bret Ludwig]

Are there any here who know this instrument, or know who might know whether it
could be used for more general audio work, beyond the commented link in this?

Bruel & Kjaer 2107 Frequency Analyzerhttp://www.trademe.co.nz/Browse/Listing.aspx?id=136643465

It's a well constructed, benchworthy and easy to use LF selective
level voltmeter and oscillator and would be a good acquisition for a
hobbyist with some bench space. I'd like to have it myself but the
shipping would be killer.