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Thread: spring reverb

  1. #1
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    spring reverb

    I'm picking up an FM radio station app. thru
    a Pioneer SR-202w reverb unit when it is
    hooked in to my system ...any ideas???

  2. #2
    Senior Member Don C's Avatar
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    I'd try some different interconnect cables first. And clean the connectors with de-oxit or something similar.

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    Senior Member 1audiohack's Avatar
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    Quote Originally Posted by Fort Knox View Post
    ...any ideas???
    Yeah, but I'm not going to say it.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  4. #4
    Moderator hjames's Avatar
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    Quote Originally Posted by Fort Knox View Post
    I'm picking up an FM radio station app. thru
    a Pioneer SR-202w reverb unit when it is
    hooked in to my system ...any ideas???
    Generally, such things are AM stations - like WTOP - which in the old days was AM only, but they also have an FM simulcast these days at 103.5 - tho you will NOT be decoding an FM signal off a reverb spring. Most likely its the AM side - used to be any microphone type input in the area would pick up the AM side of that local station ... We'd hear it on the audio system at Church all the time ...

    Probably an AM station that mentioned their FM side ...
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    boat anchor

    Quote Originally Posted by 1audiohack View Post
    Yeah, but I'm not going to say it.
    digital reverbs ..from my exp. .also have continuity problems w/front pnl mech sw.
    trying to operate in micro voltage circuits...so ..what works??

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    1960's

    Quote Originally Posted by hjames View Post
    Generally, such things are AM stations - like WTOP - which in the old days was AM only, but they also have an FM simulcast these days at 103.5 - tho you will NOT be decoding an FM signal off a reverb spring. Most likely its the AM side - used to be any microphone type input in the area would pick up the AM side of that local station ... We'd hear it on the audio system at Church all the time ...

    Probably an AM station that mentioned their FM side ...
    I used tube amps and spring reverbs and mics in my rock band
    in the 60's and I don't recall hearing am ....radio interference
    back then? could it be my present day tuner... in the circuit??

  7. #7
    Senior Member Wornears's Avatar
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    I have the same reception issues with the fillings in my teeth. I hate it when that happens.

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    Moderator hjames's Avatar
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    Quote Originally Posted by Fort Knox View Post
    I used tube amps and spring reverbs and mics in my rock band
    in the 60's and I don't recall hearing am ....radio interference
    back then? could it be my present day tuner... in the circuit??
    But - its the basic difference between Amplitude Modulation and Frequency Modulation -
    FM requires a much more sophisticated circuit to get the sound from the signal -
    AM is a more brute force method that's hard to keep the sound OUT of a circuit ...
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    unplugged

    Quote Originally Posted by hjames View Post
    But - its the basic difference between Amplitude Modulation and Frequency Modulation -
    FM requires a much more sophisticated circuit to get the sound from the signal -
    AM is a more brute force method that's hard to keep the sound OUT of a circuit ...


    This reverb plays radio unplugged (from the wall..that is)....(RCA's still in the circuit)
    (I guess that means.... Mr. Wornears wasn't kidding....

  10. #10
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    Quote Originally Posted by Don C View Post
    I'd try some different interconnect cables first. And clean the connectors with de-oxit or something similar.
    thanks for the advise..my patch bay looked atrocious ...
    ...and for what its worth ..
    the coil reverb is good on the ears....I can hear more
    music....

  11. #11
    Moderator hjames's Avatar
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    Quote Originally Posted by Fort Knox View Post
    This reverb plays radio unplugged (from the wall..that is)....(RCA's still in the circuit)
    (I guess that means.... Mr. Wornears wasn't kidding....
    Well, you must be near some kind of powerful AM transmitter to make the springs oscillate harmonically ...
    With that much power punching through the aether, I'd wonder what else is getting too much juice.
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    fix

    Quote Originally Posted by hjames View Post
    Well, you must be near some kind of powerful AM transmitter to make the springs oscillate harmonically ...
    With that much power punching through the aether, I'd wonder what else is getting too much juice.
    We'll I quit drinkin in 06' ...and toke up Water and Biking...
    But..... I did find a fix ..another in line digital reverb circuit
    (defeat button) did the job...by the way it was am1580 sports
    radio....

  13. #13
    Moderator hjames's Avatar
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    Quote Originally Posted by Fort Knox View Post
    We'll I quit drinkin in 06' ...and took up Water and Biking...
    But..... I did find a fix ..another in line digital reverb circuit
    (defeat button) did the job...by the way it was am1580 sports
    radio....
    Hmmm I sure haven't kept up with all those noisy old AM stations ...
    Back in the 60s our church would pick up WTOP-AM (1500 kc) from Wheaton, MD

    But yours?
    Wow - its the old WPGC-AM! (aka radio Prince Georges County)

    https://en.wikipedia.org/wiki/WJFK_(AM)

    ... 1580 kilohertz

    On April 14, 1955, WPGC was issued a permit to raise power to 10,000 watts. It also moved its offices from Morningside to a facility in Hyattsville, Maryland. It later moved to Southeast, Washington, D.C. in studios formerly used by WBUZ (95.5). In 1958, the station started simulcasting its programming on 95.5, by then renamed WRNC; the station is now WPGC-FM, which it became after WPGC-AM bought 95.5 outright.
    On April 9, 1979 the FCC granted WPGC a permit to raise power from 10 kilowatts to 50 kilowatts directional.
    The station subsequently changed their call sign on January 29 2013 to WJFK, matching call signs with sister station WJFK-FM "106.7 The Fan."
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