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About LarryF

  • Rank
    Hero Member
  • Birthday 12/11/1943

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Profile Information

  • Location
    Rio Rancho, New Mexico
  • Interests
    Classical music, fast cars and Maine Coon cats
  • Interested in Sound for Picture
  • About
    I have been chief janitor at Lectrosonics for 40+ years.

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  1. Review of the Lectrosonics L Series

    Hi Matthew, Thanks for the update. I will ask about getting it into the manual, since 18 months ought to be long enough for any beta tests. Best Regards, Larry Fisher
  2. DPA 4017B Vs CMIT 5U

    Cranking up the Hma gain allows you to reduce the receiver gain by the same amount dropping the link noise (RF LINK) by the same amount. Check the manual for exact instructions. If the Hma is indeed the weak link, it will make a big improvement. Best, LEF
  3. Lectrosonics SMWB coming soon?

    Very valid reason(s). Don't forget Dweedle tones for buried costumes. Can triple battery run time on SM's and SSM's Regards, LarryF
  4. Lectrosonics SMWB coming soon?

    All is good. I feel the same way when a new model anything comes out with all the features I discovered I really wanted on the one I just bought. Fire was probably the only invention that has stayed the same for millennia. Certainly the wheel never stood still. Best, LarryF
  5. Lectrosonics SMWB coming soon?

    The 250mW unit will continue using an isolator for the foreseeable future and will be one block wide due to the isolator. In short, money safely spent. Congress and their insatiable need for spectrum money has made life harder for manufacturers and their customers. Best Regards, Larry Fisher
  6. Lectrosonics SMWB coming soon?

    Cue crickets stage left
  7. DIY Dipole antenna!

    Is there a balun to take the unbalanced coax feed to the balanced dipole arms? Best Regards, Larry Fisher
  8. White space hustle

    Interesting article from Wired: https://www.wired.com/story/microsoft-is-hustling-us-with-white-spaces/ Best Regards, Larry F
  9. Transmitter SMA Connector

    Hi Chris, That's a custom connector made by us with the compression o ring. Call service for the part. Best, Larryf
  10. Playback speaker tip

    We took a third octave equalizer and the Maximouse box to various musicians in Albuquerque and let them play with settings to their hearts content. We then duplicated the third octave settings in the unit on the "music" setting. As you might guess, it was bass boost and treble boost with a pulled down midrange. The tone control controls both boost levels, taking one up and the other down. Kind of a seesaw effect. The "voice" setting is flat, with a gently rising boost at 7k and up. The tone control works just on the treble. All influenced by a light weight paper cone speaker in a small cabinet, rolling off any real low end. But it was loud for a battery powered amp. We sold thousands in New York city and a handful in the rest of the US. Guess where all the street musicians were? Best, Larry F
  11. Playback speaker tip

    Over the years, some ch-40's were better than others with the newer ones being the most robust. They were typically killed with organ or some other constant level instrument and dead batteries. With good batteries the whole system was pretty bullet proof. You can find the Maximouse manual, of course, in obsolete products on the Lectro website. Best Regards, Larry F
  12. Playback speaker tip

    The CH-40 is a 20-24 Volt AC (!) power supply. It was nothing but a step down transformer. This was decades before the regulated DC power wallwarts so common today. That was even before we made small camera mount receivers. Our highest frequency wireless was 42 MHz. (No, I didn't drop a zero.) Our biggest sale was to Game and Wildlife since the long wavelengths were ideal for tracking dinosaurs. Best, Larry F
  13. Playback speaker tip

    Definitely use lead acids only. 4.5 Ah is close enough. Best batteries would be Panasonic from Digikey. Just check dimensions. Running them from the wall with dead batteries generally burns up the transformer in the wall wart, depending on levels of audio. It definitely will not reach close to full power with dead batteries. Probably about 2 Watts. And it won't sound too good as the voltage on the internal circuits will be dancing around at 120 Hz (60 cycle rectified). With good batteries it is an honest 7 Watts+ and the circuits will work properly. At about 2 Watts out, a photo cell LED module introduces a 2:1 compressor over the next 7 dB of range. In addition, the speaker is a custom made 2 Ohm unit with a light weight voice coil, short magnetic gap and large magnet. It has better efficiency than any other 8 inch we could find. In the midrange, of course. Finally, there is a clipper circuit, that boosts the treble about 10 dB before the master volume, after which the treble is cut 10dB. This gives you linear response overall but if you turn up the input preamp and run down the master, you can get an overload sound at moderate output levels with rounded off clipped waveforms. All this to say, a properly working unit, is indeed a MaxiMouse. No Super Cheese needed. Best, Larry F
  14. I think "abandoned" is when the manufacturer no longer "services" the particular product. Service includes repair, manuals, and general support. Just not making it any more is not abandonment. I've always thought a company should service the product until they are forced, kicking and screaming, to give it up. That can be due to parts that, after many years, are no longer being made or parts that have become so expensive that it is not worth it to the customer to pay for a repair. Or the one technician that can fix the unit is 92 years old and has gotten very cranky. I have personally spoken to a large user that couldn't get multiple products serviced (factory checkup) after 5 years. I think that is a poor business choice. As an example of the difficulties of long term support, the 195 series is still being 95% supported as well as the ancient 185 series. Why 95%? Because the last American crystal manufacturer that would make special frequency crystals for those units has gone out of business. If it's not a broken crystal or a frequency shift required by the FCC auction, you are probably covered. If it be the case, we and you are up Paddle Creek. Best Regards, Larry Fisher
  15. New Lavs for old VHF Lectro (M187)?

    Yep, LEF