FOR SALE: GR Research OB-5 Speakers

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wgallupe

FOR SALE: GR Research OB-5 Speakers
« on: 19 Dec 2021, 08:01 pm »
GR Research OB-5 Speakers (Pair) $1200

NO SHIPPING: Located in Central Massachusetts

Each OB-5 (Open Baffle) speaker features two 5-¼” mid-bass drivers and a Bohlender Graebener Neo3 PDR planar magnetic tweeter mounted in an open baffle covering the range from 200Hz and up.     

Another pair of 5-¼” woofers are mounted in a ported enclosure below the open baffle section to cover the range  below 200Hz and are tuned to reach a -3db down point in the 45Hz range.

Sensitivity rating is 91db with 1 watt/1 meter.
 
Impedance rating is 6 ohms with a minimum impedance of 4 ohms around the 4.5kHz range. They are fairly easy to drive and easy to get good output levels without tons of power.

Dimensions (inches): 53H x 8-3/4W x 16D (Bottom base is 12W x 18-1/2D)

Link to a ‘review’ and pics I posted at AudioCircle / GR Research Forum: https://www.audiocircle.com/index.php?topic=127987.0




wgallupe

Re: FOR SALE: GR Research OB-5 Speakers
« Reply #1 on: 6 Jan 2022, 12:06 am »
Still available.