Under contract to Richard Long and Associates, Alan Fierstein designed the famous RLA series of
crossovers, such as the X-2000, X-3000, X-4000 and X-5000 that were used in the sound systems at New York's Paradise Garage, Studio 54 and may other clubs. These units are still much sought after. As the sole designer of these units, Al retains the complete schematics and still evaluates, repairs, modifies frequencies and gain, and customizes these
old units. We don't manufacture them at the present time. We do not work
on the copies made by Rane and others.
Electronic Monitoring:
In some cases a noisy business (a club, for example) may enter into an agreement with their landlords, other tenants or neighbors to keep the sound below a certain level. We have designed and installed systems that can monitor compliance with such agreements automatically, or facilitate measurements by our technician without entering the establishment. They can even notify you by telephone of violations, automatically under computer control.
Other We maintain a well-equipped shop in which we have built many devices for special applications. We even designed and built the isolator box shown. It houses a number of electrical air conditioner relays which make very loud clicking sounds when they switch. This noise was random, loud and very irritating to the apartment owner- one of the most well-known fashion designers in the world. The box (shown before the final side was screwed on) has solved the problem nicely. Good thing, because the relays had to be located in a closet behind the headboard of the master bedroom of a multi-million dollar Tribeca loft.
Custom 2 way crossover and limiter in locked steel case. This prevents overzealous DJs from bothering the neighbors.
Custom microprocessor-controlled bird call display for Audubon Society in the Prospect Park Boathouse. (Brooklyn, NY) System automatically keeps track of seasons and plays different bird calls based on migration patterns.
We have designed a large number of other devices. These include an audio coupler for a telecommunications company, a sound playback synchronizer for an art installation, a sound-privacy scrambled masking system for a high-security research facility, a custom telephone system for a hearing-impaired client, a multi-channel vibration measurement system for nuclear submarines, an audio and LED indicator system for a science museum and many more.
Testimonial Letter: Regarding the bird call display mentioned above.
Note: This is a transcription made to fit a small screen. The original scan is available on our desktop site
May 31, 2002
Acoustilog
19 Mercer Street
New York, NY, 10013
Dear Alan,
I wanted to thank you so much for all your help with the electronics, everything is working and people are happy. They are getting lots of visitors and the reaction is very positive.
The NY Audubon people have talked to us about doing the next one, starting to develop it in September, so you will be hearing from me again if you are interested.
Talk to you soon.
Tim Watkins
Acoustilog, Inc.: Gyms, Fitness Studios and Dance Studios
(212) 925-1365
19 Mercer Street, New York, NY 
