Parts – Great Plains Audio (2024)

This is a complete list of all the replacement parts we manufacture. Please contact us for pricing and availability.

How to find the part(s) you require

1. Look in the section that best describes your loudspeaker (e.g., High-frequency Drivers, Woofers, etc.).
2. Locate the manufacturer of your speaker (e.g., Altec)
3. Find the model number of your speaker in the second column
4. Locate the original part number for your loudspeaker in column 4
5. Check the last column, “Special Notes for instructions regarding parts for your speaker
6. Read the notes carefully. They are located at the bottom of each section

Index

Parts For High-Frequency Drivers, Listed By Manufacturer and Model Number
High-Frequency Drivers Used In Loudspeaker Systems (Listed By Manufacturer and System Model Number)
Low-Frequency Loudspeakers (Listed By Manufacturer and Model Number)
Low-Frequency Loudspeakers Used In Systems (Listed By Manufacturer and System Model Number)

[sta_anchor id=”HF Loudspeakers”]

Parts For High-Frequency Drivers, Listed By Manufacturer and Model Number

[sta_anchor id=”HF Systems”]

High-Frequency Drivers Used Loudspeaker Systems
(Listed By Manufacturer and System Model Number)

Special HF Application And Ordering Notes

NOTE 1: Special modifications are required to keep the 288B in operating condition. You must send the entire unit in and have us modify and re-magnetize the motor structure. The HF diaphragm must also be replaced. Select from one of the following aluminum diaphragms:

Part #: Dia. Type: Impedance:

20221 Aluminum 24 ohms

23834 Aluminum 16 ohms

23763 Aluminum 8 ohms

25884 Pascalite™ 8 ohms

25885 Pascalite™ 16 ohms

NOTE 2: When the original 24 ohm impedance is not required, use the diaphragm manufactured for the Altec Lansing 299-8A, Altec original part #25884 (8 ohms), or the diaphragm manufactured for the Altec Lansing 299-16A diaphragm, Altec original part #25885.

NOTE 3: For superior HF reproduction, use original diaphragm. If higher power handling is required, but excellent HF frequency response is also needed, use diaphragm #25884 (8 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 4: For superior HF reproduction, use original diaphragm. If higher power handling is required, but excellent HF frequency response is also needed, use diaphragm #25885 (16 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 5: ALL older Altec drivers must use a 288/291 or 800/900 Series Conversion Kit in order to be retrofitted with ANY Altec Lansing Diaphragm manufactured after 1983. Every Altec Lansing driver manufactured before 1983 will require one of these kits the first time a post-1983 diaphragm is installed in it.

Old-style Diaphragm/Voice Coil Assembly for all Altec Lansing HF Compression Drivers manufactured prior to 1983. If yours looks like this, you must send it in to Great Plains Audio to be re-fitted with new parts, or you can buy a new style diaphragm and a conversion kit.

NOTE 6: For superior HF reproduction, use original diaphragm. If higher power handling is required, but excellent HF frequency response is also needed, use diaphragm #25884 (8 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 7: For superior HF reproduction, use original diaphragm. If higher power handling is required, but excellent HF frequency response is also needed, use diaphragm #25885 (16 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 8: Symbiotik® diaphragms are no longer available. If high power handling is required, but excellent HF frequency response is needed, use diaphragm #25884 (8 ohms). For superior HF reproduction, use diaphragm #23763 (8 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 9: Symbiotik® diaphragms are no longer available. If high power handling is required, and excellent HF frequency response is also needed, use diaphragm #25885 (16 ohms). For superior HF reproduction, use diaphragm #23834 (16 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 10: For superior HF reproduction, use original diaphragm. If high power handling is required, and excellent HF frequency response is also needed, use diaphragm #26420 (8 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 11: For superior HF reproduction, use original diaphragm. If high power handling is required, and excellent HF frequency response is also needed, use diaphragm #26421 (16 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 12: Original 4 ohm diaphragms available only by special order. For superior HF reproduction, use diaphragm #34647-4 (4 ohms).

NOTE 13: Symbiotik® diaphragms are no longer available. If high power handling is required, and excellent HF frequency response is also needed, use diaphragm #26420 (8 ohms). For superior HF reproduction, use diaphragm #34647 (8 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 14: Symbiotik® diaphragms are no longer available. If high power handling is required, and excellent HF frequency response is also needed, use diaphragm #26421 (16 ohms). For superior HF reproduction, use diaphragm #34852 (16 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

NOTE 15: Symbiotik® diaphragms are no longer available. For superior HF reproduction, use diaphragm #34647-4 (4 ohms). Call us if you need advice on the proper selection of a diaphragm for your particular application.

[sta_anchor id=”LF Loudspeakers”]

Low-Frequency Loudspeakers
(Listed By Manufacturer and Model Number)

[sta_anchor id=”LF Systems”]

Low-Frequency Loudspeakers Used In Systems
(Listed By Manufacturer and System Model Number)