Altec Lansing HF DRIVER CROSS REFERENCE MASTER LIST User Manual

Gary R. Jones
1000 W. Wilshire Blvd. Suite 360
Oklahoma City, OK 73116
Tel: 405-848-3108
Fax: 405-848-3217
LARGE FORMAT HF COMPRESSION DRIVERS
Early 288 and 291 series high frequency drivers used Alnico motors, most with a
circumferential phase plug. Later 288, 291, and 299 series drivers used ceramic
motors with Tangerine® phase plugs. All use 2.8" voice-coils and the diaphragm
assemblies interchange. (The 290 series diaphragm will not interchange)
Three types of diaphragm assemblies have been manufactured. You can verify
which diaphragm you have by inspection. The "Symbiotik" diaphragm has a
Kapton (plastic) surround with an aluminum dome (500Hz - 12kHz). The
aluminum and “Pascalite” diaphragms (500Hz - 16kHz) are all aluminum or
aluminum alloy. The "Pascalite" diaphragm has the sonic quality of the aluminum
diaphragm and handles twice as much power.
Part #25884 (8 ohms) or Part #25885 (16 ohms) are recommended as
replacements for all drivers listed below . . .
288B
Aluminum, 24 ohms. Direct replacement not available,
a modification can allow current diaphragms to fit.
288C
Aluminum, 24 ohms. Original Altec part# 20221
288-8E,G,H,K,L
Aluminum, 8 ohms. Original Altec part# 23763
288D
288-16G,H,K,L
Aluminum, 16 ohms. Original Altec part# 23834
288-32G,H,K
Aluminum, 32 ohms. Direct replacement not available
291-8K,L
Symbiotik, 8 ohms. Original Altec part# 25692
291-16
A,B,C,K,L
Symbiotik, 16 ohms. Original Altec part# 21531
299-8A
Pascalite, 8 ohms. Original Altec part# 25884
299-16A
Pascalite, 16 ohms. Original Altec Part# 25885

Altec Lansing HF DRIVER CROSS REFERENCE MASTER LIST Specifications

General

Brand	Altec Lansing
Model	HF DRIVER CROSS REFERENCE MASTER LIST
Category	DC Drives
Language	English

Summary

Large Format HF Compression Drivers

Driver Technology Overview

Details Alnico/ceramic motors, phase plugs, voice-coils, and diaphragm interchangeability for 288, 291, and 299 series drivers.

Diaphragm Assembly Types

Describes Symbiotik, Aluminum, and Pascalite diaphragm assemblies, including material, surround, dome, and frequency range.

Recommended Replacement Parts

Lists driver models with recommended replacement parts, original part numbers, and impedance ratings.

Small Format HF Compression Drivers

Driver Technology Overview

Details Alnico/ceramic motors, phase plugs, voice-coils, and diaphragm interchangeability for 604, 800, and 900 series drivers.

Diaphragm Assembly Types

Describes Symbiotik, Aluminum, and Pascalite diaphragm assemblies, including material, surround, dome, and frequency range.

Recommended Replacement Parts

Lists driver models with recommended replacement parts, original part numbers, and impedance ratings.