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Multi-Way Conventional loudspeakers with crossovers

Marantz ribbon speakers
Marantz ribbon speakers
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Old 23rd August 2005, 05:48 PM   #1
I am the Walrus is offline I am the Walrus  United Kingdom
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Join Date: May 2005
Location: Salisbury, Wiltshire, England
Default Marantz ribbon speakers

Does anyone know anything about Marantz ribbon speakers? ie. sensitivity, nett weight per speaker, build quality, range, impedence etc , etc. Apparently they did a model No. DD16 about twenty something years ago. About a foot tall for bookshelf application.

If anyone has a pair or knows something I will be very grateful!!

Many thanks
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Old 25th August 2005, 07:13 PM   #2
Havoc is offline Havoc
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Join Date: Feb 2002
Location: Belgium
That could be Philips speakers. Marantz is part of Philips, and they had (have?) a ribbon tweeter and midrange.

the tweeter was the AD 21600/RT8
dim: 118mm x 134mm x 44mm (hwd if looking to the front)
rated impedance: 8 Ohm
voice coil resistance: 7 Ohm
resonance freq: N/A
magnetic flux density: 0.36T
mass: 770g
sensitivity: 92 dB/W/m
max noise power: 10W

they cross the 90dB line at 5kHz and again at a bit over 20kHz, rise to 92dB at7.5kHz and stay ther until 20kHz. -6dB at about 3.5kHz and 40kHz.

This from the 1990 databook. I have somewhere spec of the midrange, but that would need a rather serious digging...
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Old 29th August 2005, 07:10 PM   #3
I am the Walrus is offline I am the Walrus  United Kingdom
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Join Date: May 2005
Location: Salisbury, Wiltshire, England
That's great help, will research more bearing in mind the 'Phillips' brand information.

Many thanks
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