TAD 4001 ,COMPRESSION DRIVERS, PIONEER, RARE SPEAKERS

TAD 4001 ,COMPRESSION DRIVERS, PIONEER, RARE SPEAKERS (image 1/3)
TAD 4001 ,COMPRESSION DRIVERS, PIONEER, RARE SPEAKERS (image 2/3)
TAD 4001 ,COMPRESSION DRIVERS, PIONEER, RARE SPEAKERS (image 3/3)
Pricing & History
  • Sold for
    Start Free Trial or Sign In to see what it's worth.
  • Sold Date
  • Source eBay UK
Rare opportunity to purchase some complete units with Beryllium diaphragms, at a bargain price. Still a rare sort after high end fantastic sounding compression driver,still in production with a massive $2000 each. You are bidding on a 16ohm pair of drivers as in picture. Good luck.. Can deliver world wide figure is a estimate though and may vary on destination. Sorry are still in production all rectified. Info: DIAPHRAGM The TD-4001 employs a pure beryllium diaphragm 3-15/16 inches (100mm) across. Beryllium is a light but very rigid material that features very high-speed sound propagation. The weight of the dome section has been reduced to a mere 1g contributing to the very high efficiency (110dB/W) of this driver. VOICE COIL The TD-4001 employs an aluminum ribbon voice coil, insulated by alumite film and wound edgewise on the bobbin. The voice coil has a small mass yet offers a high conversion efficiency. The bobbin is formed of polyimide film, displaying excellent heat resistance to temperatures as high as 752ºF (400ºC). MAGNETIC CIRCUIT Total magnetic flux is 228,000Mx, with flux density of 20,000G, thanks to the use of a very heavy (6 lbs. 10 oz./3kg) alnico 5DG magnet. An oxygen-free copper shorting ring prevents impedance rise, resulting in low distortion. DESIGN The TD-4001 is of the rear compression design, which eliminates read more
ebay
Items in the Price Guide are obtained exclusively from licensors and partners solely for our members’ research needs.
If this item contains incorrect or inappropriate information please contact us here to flag it for review.

If you are the originator/copyright holder of this photo/item and would prefer it be excluded from our community, contact us here for removal.