80's AM loudness War

AM Radio discussion. Directional arrays are FUN!
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Leembruggen
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Re: 80's AM loudness War

Post by Leembruggen »

CKLW was most likely four Inovonics 220's at the studio and almost anything goes at the transmitter. I flew out to see Ed in Detroit concerning AM760 for a week. He explained three processing chains at CKLW he could switch to at any time. Chain one was the typical RKO setup. Around 1983 I traded engineering services for a pile of BL40's. Tried 2-band, 3-band and 4-band configurations through a Harris MW1A. The 4-band configuration generated a density I kind of miss. If I had to do it again I'd try two 9300's in series. #1 as a 5-band compressor, #2 as a fast limiter-clipper. If only Bob Orban gave us individual band gates!
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Shane
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Re: 80's AM loudness War

Post by Shane »

Low tech alert. Mid-70s. Little 1000-watt daytimer. Our processing consisted of a Marti compressor/limiter, a Pultec EQ, and a Fisher organ reverb (Harvey Radio in New York sold them for $69.99). That setup made some tracks.

One morning I came in to sign on and saw a shiny new black box in the rack. Overnight the Ops Mgr took all that out and replaced it with a maladjusted DAP. It was so bad LISTENERS called and wanted to know what happened.

The PD and I appealed to the GM who was only too happy to send back the DAP and not have to spend the money.
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Deep Thought
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Re: 80's AM loudness War

Post by Deep Thought »

Those little Marti limiters weren't horrible as long as you didn't drive them too hard. If you did, they pumped like mad. Same basic circuit was in the RPT-25.
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Kelly
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Re: 80's AM loudness War

Post by Kelly »

Three DAP blasts from the past on FleaBay: http://www.ebay.com/itm/Three-3-Dorroug ... 3f4ea0847b

Maybe one could make lamps out of them!

Flower Pot Guy has a single DAP for around $1,000.00 (discounted, woo hoo)
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Deep Thought
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Re: 80's AM loudness War

Post by Deep Thought »

Geez...I have two of them and they both work. Hmmm....
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Bill DeFelice
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Re: 80's AM loudness War

Post by Bill DeFelice »

Kelly wrote:Three DAP blasts from the past on FleaBay: http://www.ebay.com/itm/Three-3-Dorroug ... 3f4ea0847b

Maybe one could make lamps out of them!
I thought the old ITC cart decks made better lamps :D
Kelly wrote:Flower Pot Guy has a single DAP for around $1,000.00 (discounted, woo hoo)
Gee, maybe he'd be interested in the pair of Moseley TFL-280B crushers I have. Wonder what kind of ridiculous price tag he'd put on those.
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ChuckG
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Re: 80's AM loudness War

Post by ChuckG »

Deep Thought wrote:Geez...I have two of them and they both work. Hmmm....

Yeah, I dug through the old junk vintage processing gear box and found a few things too. At flower pot guy's prices, we may be retiring early. :lol:
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Deep Thought
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Re: 80's AM loudness War

Post by Deep Thought »

Well, if you have a Sta-Level, an LA2A or anything with "Fairchild" on it, let me know. :mrgreen:
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w4cl
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Re: 80's AM loudness War

Post by w4cl »

There is an AM station in my market that today is running an Audimax/Volumax combo. With all the other stations running Optimod's and such, they just can't keep up. No high end at all.
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Deep Thought
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Re: 80's AM loudness War

Post by Deep Thought »

If they didn't install an NRSC filter/limiter after the Volumax that's probably why.
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Leembruggen
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Re: 80's AM loudness War

Post by Leembruggen »

Hmm.. CBS without NRSC-2 preemphasis.. If he was closer I'd offer assistance. I'm all for the little guy.
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Deep Thought
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Re: 80's AM loudness War

Post by Deep Thought »

LOL...I recently found a DAP 310 modded with a Radio Design Labs NRSC filter "stick on" inside.
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HadYourPhil
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Re: 80's AM loudness War

Post by HadYourPhil »

One of my stations has a modified DAP being driven by a Orban 412A that is barely moving. This feeds the STL. At the shack I have a 9100. Nice and loud, plenty of positive peaks, but it doesn't sound as processed as it is. My favorite 70's chain is Audimax/DPE/Volumax, with the go-faster resistor in the Audimax.
We improve things by making them worse...
w4cl
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Re: 80's AM loudness War

Post by w4cl »

The station is for sale so the current owner doesn't really care what his audio sounds like.
Kelly
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Re: 80's AM loudness War

Post by Kelly »

w4cl wrote:The station is for sale so the current owner doesn't really care what his audio sounds like.
I got a good laugh out of that comment. Thank you!

I have to agree, the s/n with all that back to back old audio processing must have been close to -12db. All that noise wastes modulation.
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