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Addendum : To move from the time domain to the frequency domain you need an instrument that implements the Fourier Transform . ( spectrum analyzer or some scopes with this function inside ) Ciao Marco

A question : why do you want to test THD + N ? Are you a designer or do you want to do for amusmement ? If you want to test THD + N you need an audio analyser . The difference is that with a scope you are in the time domain and with an analyzer you are in the ferquency domain . Scope together...

Find the guilty : PL 4000 or PL 700B . Simply reverse L and R channels at output of PL 4000 or at input of PL 700B . Ciao Marco

Ciao from Italy Marco

If my memory serves me PL 2000 ambience function works both with 2 and 4 channels . Test and test again , using spare amp and speakers ( if you have ) . This system probably is the forefather of Carver' s Hologram. Ciao Marco

PL 4000 ( 2nd version only ) is able to decode to SQ records and performs a sort of ambience . For amusement I tested these functions with 2 small speakers ( AR 8bx ) and Yamaha 2010 as power amp ( both already owned ) . Unbilievable , it works . So I bought this little class t power amp...

https://radio-locator.com/cgi-bin/locate?select=city&city=Gillette&state=WY I have found this table ( Gillette is an example and a " tribute " to Lee ) Very helpful , but probably known by all of you . Ciao Marco

There's no good antenna . It depends on the enviromental condition ! 1) Start with the simplest solution : a 300 Ohm dipole 2) Check the RSSI using strength meter and tuning meter 3) Search weak stations ( classic music ) and check the noise due to multipath 4) In case of poor results use...

My deep condolences ! Very sad to hear of your loss . Marco

Welcome aboard ! Ciao Marco

Welcome to Phase Linear Kingdom ! Ciao Marco

Welcome aboard ! Ciao Marco

R.I.P. Craig and John . Marco

Thank you again my friends . Ciao Marco

Thank you guys . Ciao Marco

Yesterday at 91 my mother passed away . The death was due to the age and nothing else . Now the problem will be my father ( 94 ) , but he's not alone since my brother and his family live at the first floor of the same house and I and my family live 3 miles away . Ciao Marco

Use a 16 A relay with a cap connected to the power switch . In other words you insert the relay circuit of PL 4000. Ciao Marco

Happy birthday ! Ciao Marco

Thank you ! Anyway Marantz 2215 is already in my hands and so I need speakers for it . It's necessary to have high efficiency speakers not to destroy the tweeters at first clipping. Ciao Marco

What do you think about these speakers ? 600,000 units sold . I presume that the sound is great . I would like to power them with my Marantz 2215 BL ( 15 wpc ) Sensitivity is 92 db / W . Strongly recommanded by Marantz fans for 1030 and 2215 . Thank you in advance Ciao Marco