1991 Audi 100 Speaker Sizes
The 1991 Audi 100 speaker size chart provides factory speaker specifications and locations for original audio system components. Information covers dashboard and rear deck lid positions, detailing replacement speaker requirements for aftermarket audio upgrades. Data includes factory speaker configurations to assist with aftermarket component compatibility.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Rear Deck Lid | 6.5 | Midbass / Full-Range |
|
1991 Audi 100 Speaker Replacement Summary
2
total positions
1
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01991 Audi 100 Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1991 Audi 100 front dashboard positions house 4-inch midrange speakers, which typically handle mid-frequency audio reproduction between approximately 300Hz and 5kHz, leaving bass frequencies to dedicated components elsewhere in the audio system.
- Rear deck lid locations in the 1991 Audi 100 accommodate 6.5-inch speakers that can function as either midbass drivers or full-range units, with the midbass configuration generally providing stronger low-frequency output when paired with separate tweeters.
- The larger 6.5-inch rear speakers may warrant replacement priority over the smaller front units when considering system-wide sound quality improvements, as they contribute more substantially to overall bass response and sound stage depth.
- The 4-inch front midrange speakers likely require aftermarket options specifically designed for midrange duty rather than full-range speakers, which could result in tonal imbalance if components are not properly matched to their intended frequency range.
- The single DIN radio opening suggests compatibility with a wide variety of aftermarket head units, potentially enabling power and signal quality improvements that would complement upgraded speaker installations throughout the vehicle.
- Full-range 6.5-inch speakers in the rear deck location would handle frequencies from bass through treble independently, while midbass-designated drivers would necessitate additional high-frequency components for complete audio coverage in the rear sound stage.