SPEAKERS

Dash Speakers: All model Fieros used the same dash speakers, 10 Ohm 4" x 10" Delco units. As far as we can determine, the vehicles below used the same speakers somewhere in the vehicle. Note that Fieros which had "Premium Sound" (sub woofer option) had different speakers than other Fieros. A minimal amount of data on the "premium sound" speakers is shown below. ("Premium Sound" is the option which includes a separate amplifier and subwoofer system.)

Buick Skyhawk       '85-89
Cadillac Eldorado   '84-85
Chevy Blazer        '88-94
Chevy Cavalier      '85-94
Chevy Cavalier RS   '86-90
Chevy Cavalier Z24  '85-87
Chevy Citation II      '85
Chevy El Camino     '85-88
Chevy Monte Carlo   '78-88
Chevy Pickup EL     '85-88
Chevy Pickup S10    '86-95
Chevy Suburban      '92-95
Chevy Suburban      '92-95
GM Caballero        '85-88
GM Jimmy               '88
GM Sonoma           '93-95
GM Yukon            '92-94
GMC Pickup          '91-95
GMC Pickup Cab         '85
GMC Pickup S15      '86-93
Olds 98                '84
Olds Custom Cruiser    '90
Olds Cutlass        '84-88
Olds Regal          '78-87
Olds Riviera        '84-85
Pontiac Bonneville  '85-86
Pontiac Grand Prix  '86-87
Pontiac Sunbird     '84-88
Saab 900            '86-93

The original Fiero speakers are 10 ohm impedance. For optimum life on the factory radio/amplifier you should use 10 ohm replacements. Use of 8 ohm speakers or worse, 4 ohm speakers, will cause the amplifier to run hot for the equivalent sound level as a 10 ohm speaker. If you do not run your amplifier above 50-60% of full volume, the 8 or 4 ohm speakers will work.

A same-size inexpensive replacement for the dash speaker is available under the brand name "Linear Research", Stock Number LR410S. This is a Chinese-made speaker which is advertised as 75 Watts nominal, dual cone, for 4-8 Ohm systems. This has been used successfully even though the OEM speakers are 10 Ohm impedance. We suggest the Linear Research speakers are not a good choice with high-power amplifiers but they do work with standard Fiero radio/tape players and would be a reasonable choice when repairing a car for purposes of sale. We have seen these speakers available at Pep Boys for $13.95. The distributor is Recoton Company, 1090 Emma Oaks Trail, Lake Mary, FL 32746, (800) 732-6866.

There are many good quality aftermarket speakers such as Kenwood KFC-451C, Pioneer TSA-4103/4105 and AutoBahn AS41Q at about $100 a pair. The "Eclipse" brand is also reputed to be a good choice. Speakers are available at most audio shops and via the Internet at sites such as crutchfield.com and cardiscountstereos.com. Some speakers will come with plugs requiring an adapter or will need the wiring soldered or mechanically spliced. See the heading "Speaker Connections" below in this regard.

If you have the "premium sound option", the speakers are two-way units and provide better sound quality than the conventional OEM speaker. As of April 2005, replacement two-way dash speakers are available from GM Parts Direct for $27.44 each; the part number is 16042082. Unfortunately we do not have the part number for the companion sail panel speakers.

'86-88 B-Pillar Spkr.: The speakers in the B-pillars (also referred to as the "sail panel" speakers) are 4" x 6" and there are at least a dozen speakers made that will fit. The Rockford Fosgate FRC3246, Pioneer TS-4667, Kenwood KFC-4675, and AudoBahn AS46Q are some examples.

'84-85 Headrest Spkr.: The headrest speakers were a feature in '84-85 Fieros only. They are 3.5" diameter with 10 Ohm impedence. Many companies make a 3.5" speaker which can replace the originals and we have even seen them on blister packs in Wal Mart. Four speakers are required (two per seat) if a complete replacement is performed. Infinity, Polk, JBL, and AudoBahn are some of the manufacturers who make 3.5" speakers. The Sony Mobile XS-W3521 is a 3.5" speaker that is sold on eBay as a replacement for the headrest speakers. We have no feedback on these speakers and cannot comment on their suitablity. A 4" speaker can be made to fit the headrest by trimming the surrounding foam.

Sub woofer: The 5.25" speaker in the factory "Premium Sound" sub woofer is prone to failure due to age. The speaker frequently fails at the flex joint between the paper cone and the speaker frame. This usually can be repaired at less than the cost of a new speaker.

If a new speaker is desired, JL Audio makes one but we don't have the part number. Radio Shack makes a 5.25" Woofer (#40-1032) for about $20. Its wattage is 30 RMS, 60 peak, effective range 80-8,000 Hz, but we do not know the impedance and it may not be a good match for the amplifier. You will need to use some spacing material at the four mounting screws if this speaker is used. Sub woofer speakers can also be obtained at rodneydickman.com for about $35-40.

Speaker Connections: If you are working on speakers, note that the terminals labeled "A" and "B" on Delco speakers are - and +, respectively.