Check the listing for details. Eminence ASD:1001B Bolt on High Frequency Driver - 8 ohm. Condition: New. Listed at 39.99 USD. Eminence ASD:1001B Bolt on Driver - 8 ohm Midwest Speaker is an authorized Eminence distributor and we stock the majority of the Eminence product line. Please contact us if you need a different model. New in Box. Price is for (1) one speaker. Just change the quantity to order more. * Good replacement driver for many speakers!!! Specification:Throat Size1", 25.40mmNominal Impedance*8ΩMinimum Impedance7.6 ohm @ 2.3 kHz Power Rating**50 W (EIA-426A)Resonance0.59kHzUsable Frequency Range2500Hz-20kHzRecommended Crossover2.5 kHz / 18 dBkHzSensitivity***104.10Magnet MaterialFerriteMagnet Weight12oz, 0.34kgVoice Coil Diameter1.3" / 33mmVoice Coil FormerAluminumDiaphragm MaterialTitaniumDC Resistance (Re)6.70Ω Mounting Information:Overall Diameter3.50", 88.90mmDriver Volume Displaced9.0e-0 cu.ft., 0.26 litersDepth2", 50.80mmWeight1.70 lbs, 0.80 kgMounting ThreadN/AMounting Holes Diameter2X M6Mounting Holes B.C.D.3 in. 76.2 mm FAST GROUND SHIPPING TO THE MAINLAND 48 UNITED STATES ONLY. Shipping to Alaska, Hawaii, and Puerto Rico are extra, contact us for an estimate. INTERNATIONAL SHIPPING TO CANADA WELCOME!!! Our shipping costs do not include your country's customs charges, taxes and other fees. Please do NOT ask us to send as a gift or to lower the declared value on the customs forms. *Returns only accepted if speaker has NOT been mounted or soldered. If you return an unused speaker our shipping costs to you are not refundable and buyer must pay for return shipping.