Bauer T183 ext speaker ohms ?

[Jason Moffatt]

Does anyone know what the extension speaker ohm rating should be for the bauer T183, these are the ones manufactured by silma. If anyone has the manual could they check,thanks.

[Shane C. Collins]

From the Van Eck website:

Bauer T183 Automatic Duoplay

marketed in 1980
standard 8 mm super 8 mm film with sound
format change: auto, by switch
lens: Xenovar f: 1.2 F: 15.5-28 mm
lamp: 100 W, 12 V, EFP
reel capacity: 120 m
projection: forward, reverse
projection speed: 18, 24 fps
film loading: automatic threading

sound: magnetic playback
sound: magnetic playback on both sound tracks
sound mode: mono, duoplay
track selection: 1, 2, 1+2
track transfer: 1 to 2, 2 to 1
amplifier: transistorized
frequency response: 75-8000 Hz at 18 fps (s8), 75-10000 Hz at 24 fps, 35 dB (s8)
recording: magnetic recording on both tracks, sound-on-sound
recording level control: auto (High and Low)
sound mix: yes
input terminal: Microphone (0.35 mV, 4.7 kOhm), Phono (100 mV, 470 kOhm)
input jack: 5-pin DIN plug (European type)
output terminal: External Speaker (4 Ohm), Line-out (500 mV, 15 kOhm)
output jack: Ext Sp: 2-pin DIN plug; Line-out: 5-pin DIN plug (European type)
built-in speaker: yes
built-in film cutter: yes
motor: AC magnetic motor
power source: 110 to 240 V AC, 50/60 Hz
weight: circa 7,000 g
dimensions: 190 (W) x 230 (H) x 293 (L) mm (with arm folded)

made in Italy by Silma

[Jason Moffatt]

Thanks for that shane but i’ve noticed there are a lot of mistakes with the info on that site.For instance it has it as being 120m reel capacity but it takes 180m reels. I have a 4 ohm extension speaker and i want to find out for shure if it will be ok with that so hopefully someone here has a manual they can check.

[Steve Klare]

Usually an extension speaker runs off the same signal as the internal speaker, and there is a switch built into the external speaker jack to cut off the internal speaker so you don't overheat the amplifier by powering two speakers at the same time. You can check this by setting the volume low and seeing what happens (well..."listening"!) when you plug the extension speaker in. You can't hurt anything at low volume, especially operating for only a few seconds.

If you find this is true, then a correct external speaker for this projector has to be the same impedance is the internal speaker and if you open up the case and look at the label on the internal speaker it will tell you what that impedance is.