Friday, January 31, 2020

AKG D190E to Pleiades (130Ω,40mH) to Uher 4200 to BASF 911


It sounded like a sunny morning journey to the dentist.


The sound is very alive and clear but high frequency is too much.
Possible causes:
The particular Pleiades (130Ω,40mH) gives too much high pass
Inter modulation crossover distortion from Uher 4200 output stage driving the loudspeaker
Over,ovulating the record amplifier or tape
Gentle high cut needed to compensate for Equal Loudness curves, voice effort curves etc.


Signal path:


Bedroom with Tempur mattress - male singing voice - AKG D190E - Pleiades (130Ω,40mH) - Uher 4200 3rd arrival to Pleiades - BASF 911 - Uher 4200 3rd playing back - Pleiades linoleum Auratone 5C type monitoring speaker  - listener's ears, brain - bedroom


Recording while speaker is playing gave an interesting double tracking short of effect, phasing as speaker was only 1 meter away from mic


Listening to playback from adjacent rooms gives an impressive sound as edginess is smoothed out.


A thought is to also concentrate on Pleiades gentle slope high cut filters too.


Or (R,CL) filters, see AKG D1000E datasheet.


Later addition: The BASF 1/4in recording was transfered to TDK SAX cassette with the Sony TC-D5M. This was then played on Vicky's Pioneer, Musical Fidelity, Spendor playback system. Although Vicky did not like the s cliping problems she was amazed at the sound of a very bass male register voice recorded at half speed and then played at 7.5ips. She commented it was the best quality she has heard yet with no distortion whatsoever and pro sound. Male singer sounded like a female creature. She decided on buying a Uher 4200 report from eBay.de.


It is in current thought whether the s problems at normal singing voice where due to over loading the type. By watching the LED display on the pioneer cassette deck at s all red LEDs are suddntly lit.



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