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Phenolic Ring Tweeter Replacement for AR-4X CTS Marantz and More 8 Ohm

GRSPart # 270-252
Model: PRT-8
At last, a faithful reproduction of the classic "phenolic ring" tweeter developed by CTS and used by Marantz, Altec, Martin, Acoustic Research and many others!

Key Features

  • Modern reproduction of the famous CTS design used by Marantz, Altec, and many others
  • High efficiency and smooth response
  • Restore your classic speaker system from the Seventies!
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Overview

Phenolic Ring Tweeter Replacement for AR-4X CTS Marantz and More 8 Ohm

At last, a faithful reproduction of the classic "phenolic ring" tweeter developed by CTS and used by Marantz, Altec, and many others! High efficiency and smooth, extended response. Extremely versatile; great for repairing older systems or for new custom projects. Low-mass paper cone and dust cap, 3/4" voice coil, and stamped steel faceplate. 8 ohm nominal impedance. This is a drop in replacement for the Marantz Imperial Series cabinet speakers models Marantz Imperial 4, 5, 6, 6G, 7, 8, and 9 with common part numbers 137-7348N, 137-7350, 137-7816, and 841-1022 and HLM312A. Also used in Radio Shack Nova series cabinets Nova 7b as well as the Altec Lansing Santana 891 speakers, RSL Rogersound Labs, Acoustic Research AR 4x (may require crossover modification for full power handling), Martin Speakers, and Rectilinear XI Cabinets from the 70's.

Product Details

BrandGRS
ModelPRT-8
Part Number270-252
UPC844632084362
Unit of MeasureEach
Weight1

Product Specifications

Cone / Dome Diameter2"
Cutout Diameter3.19
Tweeter TypePaper Cone
Power Handling (RMS)30 Watts
Impedance8Ω
Frequency Response2,000 to 18,500Hz
Sensitivity90dB 2.83V/1m

Thiele-Small Parameters

Resonant Frequency (Fs)1005Hz
DC Resistance (Re)6.8Ω

Mounting Information

Overall Outside Diameter4.25"
Depth1.25"

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