Southeastern Michigan
Woofer and Tweeter Marching Society

SMWTMS was founded in April 1975 by four audiophiles. Our mailing list now covers over one hundred people. Our interest in audio is at the highest levels, but our interest in organization is minimal. Meetings are announced in the club publication named, LC, The SMWTMS Network. This modest journal publishes member's thoughts on audio scene. The cost of printing and mailing LC is $12.00 per calendar year.

Our meetings occur on the second or third Saturday of odd numbered months and are held at a member's home. The typical number of people at a meeting is 26 ± 6. To reduce the burden on those able to host such a group, members who cannot host are placed on a co-host roster and required to obtain the refreshments. There is a door charge of $5.00 at each meeting.

Since club journal and other costs are separate, meetings are open to all and out state members do not support local meetings.

Upon payment for LC, you will receive a list of current members. For inclusion in the list, please send your home and work phone numbers, and either your area of interest within audio or your e-mail address. To receive LC, please send $12.00 to SMWTMS, P O Box 1464, Berkley MI 48072-0464. Please make checks payable to David Carlstrom. Please indicate your willingness to host meetings in your home.

SMWTMS meeting programs are primarily prepared and presented by SMWTMS members. New members are encouraged to contribute a program as soon as they feel comfortable. Contact the Program Director with your ideas.

Latest in Audio: Reports from Audio Engineering Society Conventions, the Consumer Electronic Show, and other audio related events around the world by members of the Detroit delegation.

Annual Trunk Sale & Swap Meet: Sell, Trade, or Auction your excess audio gear and spare parts from the trunk of your car. Astounding items and astounding prices have made the SMWTMS trunk sale popular.

Live Music: Rock Guitar and Fretted Bass Session; Flute and Oboe Tutorial and Recording Session; Brass Quintet Recording Session; Violin; Vocal Recitals; String Quartet Recording Session; Viola; Classical Guitar; Jazz Singer; The Bob Foley Concert Tour, a guide to local and not so local concerts of merit.

Annual Autosound Contest: Judged by Perceptual Transfer Function Measurements; Measuring Imaging Performance; Perceptual Transfer Function Spatial Rendition Module; The Tuner Box; "The Grand Wazoo" audio system concept in a Dodge Durango; Perceptual Transfer Function Microphone Array; Localized Sound Power Measurements; Foamy Head Measurements; Annual Autosound Contest; Subjective Test Form.

AB Listening Tests: Earl Geddes Speakers v. JBL and Gradient; PSACS 2001 Op Amp ABX Test Report; PCABX Tests; 24 bit / 96 kHz Sampling Digital Audio; ABX Testing After 23 Years; Studio Condenser Microphones; 5.1 Channel Dolby Digital from distant speakers compared to virtual 5.1 on two close-up speakers; MD encode/decode; Power Amps; Pre-Amps; Loudspeakers; Absolute Phase; Cassette vs. Open Reel; Piano Sound Comparison; AB Ethics; Subjective Test Form.

Speakers: Monopole Subwoofers v. Infinte Baffle Subwoofers; Reference Surround System, "Single Box Surround Speakers" by Steve Eberbach, founder of DCM Loudspeakers; "Loudspeaker Design Basics & More" by Jesse Spence; Outdoor Speakers; Position Dependant Amplitude Modulation Distortion (POSDAM); The "Boxter" a tiny sub-woofer; Large Displacement Subwoofer Systems; Mark Ziemba exotic PA system; How To Make Ribbon Speakers; Backyard Horn Speaker System; Small Venue Sound Reinforcement Speaker System; Transmission Line Bass Reflex Hybrid; Optimum Placement of Sub-Woofers; How to Design an Award Winning Speaker System; Working With Wood; TEF Analysis of Loudspeakers; Speaker Recone Demo; Speaker Driver Parameter Measurements (Thiele/Small, Impedance, X-Max); X-Max Theory; Heil Tweeter as a Horn Driver; Speaker Construction Contests; Home Theater Sub-Woofer and Surrounds; Carver Amazing Speakers; DUMAX linearity analysis.

Demonstrations: Two Channel Expansion Formats for Surround Sound demo of 5.1 material, and 2 channel material up-matrixed to Dolby PL-II, DTS, Logic 7, etc. for comparison to the original stereo.

Home Theater: Alan Fassinger's Home Theater; Earl Geddes Home Theater; Vibration Transducers for Shaking Theater Seats; 3-D Audio or Personal Home Theater; Listening Room Design for "5.1 Channel" Audio.

Acoustics: Room Curves; 3-D Audio or Personal Home Theater; Listening Room Design for "5.1 Channel" Sound; IEC Listening Room Description and Visit.

Design Analyses: Planar Magnetic Speakers; 24 bit / 96 kHz Sampling Digital Audio; Home Theater Formats; Compact Disc Manufacturing Technology; Ambience Systems; Digital Audio Principles; Digital Delay Lines; Digital Data Compression Demo; The Human Ear; 1963 AMI Juke Box; RCA 45 RPM System and 45-EY-2 Player.

Construction Projects: Seat Shaker for Home Theater; 8mm Film Chain; Microphone Pre-Amp with Jensen Transformers; Electro-Voice 30"; Woofer with Motional Feedback; PORN (Pipe/hORN) Woofer; 16mm Movie Sound.

Software Analysis: "Jazz Organists", "Microphones and Microphone Techniques"; "Folk Rock 1965 - 1975"; "Teenage Dance Crazes of 1955 - 1968"; "Early Greenwich Village Folk Scene"; "Soulsville U.S.A.= Stax Records 1960-1975 in Memphis"; "Jazz Influences to Early Rock'n'Roll, 1945 - 1960", "Sultans of Synth", "New Romantic Movement", "Bob Segar Before Live Bullet" by David Hill; Tone Bursts for Acoustic Measurments; Truely Difficult Pop Music Quizzes from Dave Hill's research; Multi-Channel Surround Systems; Most and Deepest Bass on CDs and from Electric Bass by FFT Analysis; Mercury Living Presence Recordings; Recordings Made by Club Members.

Equipment Clinics: Audio Test Reports on the Web; MD Players; CD Players; Pre-Amps; Power Amps; FM Tuners; Tape Recorders.

Trips: Toronto Society; Group Recording Sessions; CES; Recording Studios.

Commercial Presentations: Paul Barton, Founder and Chief Designer of PSB Speakers International; Monsoon Multimedia Speakers; Waveform Inc.; Michigan Theater (Jackson); The David Hafler Company; The ABX Company; Jensen's Stereo Shop; Audio Concepts; Newform Research.

Computers and Audio: 6.1 decoder PC card; Virtual Instrumentation; Computerized Measurements of Analog and Digital Audio Players and Recorders; Frequency Response Measurement and Evaluation Protocol; Introduction to the Internet; Home Computers and Audio

Video: A Technical Review of NTSC on the Eve of its Replacement with ATSC; Microphones for Video Camcorders; Woodward Avenue Cruise 1996 & 1997; Trunk Sale 1996; Autosound Contest 1986 & 1987

November 1991, Commemorative, 100TH Issue of LC, The SMWTMS Network, is available separately: Contains historical stories of SMWTMS and the ABX Company; 57 Pages; Laser Printed; Plastic Tab/Ring Bound; $12.00 each, postpaid.