Frequency Response Test Records

[morillon]

View attachment 320341New arrival. Denon XL-7004/7005/7006

No Artist - Audio Technical Records

View credits, reviews, tracks and shop for the 1973 Vinyl release of "Audio Technical Records" on Discogs.

www.discogs.com

Looks interesting with 30 page booklet , maybe I can run some sweeps tomorrow.

View attachment 320342

the thing to investigate...this is the unusual part concerning the effective mass of the arm

 

[Balle Clorin]

You mean this ?

 

[morillon]

yes
not for classic methode etc but for the equation...often an obscure subject..
and sorry.. the most original is about mechanical impedance mesureament...
;-)
the book, box, is probably the most rich technicly ...(with the str-14 in a completely different genre..) , lots of things to learn there...

 

[Balle Clorin]

View attachment 320341New arrival. Denon XL-7004/7005/7006.According to some sources XL-7004=XG-7001

No Artist - Audio Technical Records

View credits, reviews, tracks and shop for the 1973 Vinyl release of "Audio Technical Records" on Discogs.

www.discogs.com

Looks interesting with 30 page booklet , maybe I can run some sweeps tomorrow.

View attachment 320342

Sweep has low turnover frequency of 250hz acccpring to Google translate
View attachment 320343

Booklet shows a plot of skating force across record that I have not seen before..
View attachment 320351

Fequency sweep, line in no EQ

Puffing EQ 250R-0 did not flatten it quite, here compared with Clearaudio TRS-1007

 

[Andysu]

got cheap fish and chips vinyl check technics sl-1210gr

 

[Balle Clorin]

By accident I bought a mint Denon XG-7001 from Discogs. I did not realise it is the same as XL-7004 I have, well well.

 

[Balle Clorin]

I compared denonXL-7004 and XG-7001 which are the same record but two different issues..XL-7004 gave nicer high frequency matching, Crosstalk better than 30db on both.

Nice cart-arm low resonance test. Here AT33PTG/II ON SME v

XG-7001 Crosstalk, HP filter 250hz

 

[morillon]

there is another rather special version "hq-180gr"..it is the reissue of rti at the end of the 90s for the "japan audio society"

 

[Balle Clorin]

Yes I saw that one too, not sure I will spend money on that too, my XL-7004 to 7006 triple album and XG-7001 are both NEW IN BOX/Mint quality

 

[morillon]

Yes I saw that one too, not sure I will spend money on that too, my XL-7004 to 7006 triple album and XG-7001 are both NEW IN BOX/Mint quality

my comment was just for information

 

[Balle Clorin]

AT-33PTGII left channel Denon XL-7004 vs B&Q 2010. Only relevant to compare 1000hz+

 

[JP]

onekftstart = 1

 

[dennis h]

See pages 19-20 of the below PDF for info on the making of the earlier versions of CBS-STR100 (1975)

https://www.bostonaudiosociety.org/pdf/bass/BASS-03-04-7501b.pdf

 

[morillon]

AT-33PTGII left channel Denon XL-7004 vs B&Q 2010. Only relevant to compare 1000hz+
View attachment 329529

the denon seems a very relevant solution to this b&k...

 

[Lukerator]

what’s test audio files？

 

[MaxwellsEq]

what’s test audio files？

Hi, welcome to ASR. Your question is a bit off topic (this, thread is about test LPs). I recommend you search to find threads discussing audio test files. Simply put, an audio test file is a file such as a WAV or FLAC file with test tones and sweeps instead of music.

 

[mfalcon]

What’s the best test record (frequency sweep) that is easy to purchase in the US? The CBS and Denon that are favored aren’t easy to source.

 

[JP]

STR-100 is going to be the easiest to find.

 

[narud]

is there a source for the clearaudio record where shipping to the us isnt almost as much as the record itself?

 

[mfalcon]

How many uses are people getting out of the STR-100. Is it a myth that they only have so many spins?