Midrange speakers are where a car audio system succeeds or fails in the customer's ear, because the midrange carries the voice. The GRANVOZ midrange family lists 75 models — and twelve of them carry complete published specification tables. This guide compares those twelve on their own figures and shows how a buyer should read them.
The three figures that matter
Sensitivity decides how loud the midrange plays per watt — critical when several drivers share an amplifier. Published response decides where the model can be crossed over, top and bottom. Rated RMS power decides headroom. Everything else — basket, cone, surround — matters through those three.
The twelve, on their own tables
| Model | Size | RMS / MAX | Sensitivity | Published response |
|---|---|---|---|---|
| MD-10S30-04 | 10 inch | 200 W / 400 W | 102 dB | 100 Hz–9.5 kHz |
| MD-10S30-09 | 10 inch | 150 W / 300 W | 93 dB | 95 Hz–10 kHz |
| MD-10S50-03 | 10 inch | 250 W / 500 W | 98 dB | 95 Hz–10 kHz |
| MD-65S17-03 | 6.5 inch | 100 W / 200 W | 98 dB | 110 Hz–11 kHz |
| MD-65S10-01 | 6.5 inch | 50 W / 100 W | 98 dB | 90 Hz–11 kHz |
| MD-65S23-06 | 6.5 inch | 100 W / 200 W | 100 dB | 200 Hz–10 kHz |
| MD-65S20-07 | 6.5 inch | 100 W / 200 W | 95 dB | 110 Hz–11 kHz |
| MD-65S23-05 | 6.5 inch | 100 W / 200 W | 100 dB | 120 Hz–11 kHz |
| MD-80S30-05 | 8 inch | 120 W / 240 W | 102 dB | 100 Hz–10 kHz |
| MD-80S33-07 | 8 inch | 150 W / 300 W | 94 dB | 100 Hz–11 kHz |
| MD-80S30-04 | 8 inch | 120 W / 240 W | 102 dB | 100 Hz–10 kHz |
| MD-80S13-01 | 8 inch | 80 W / 160 W | 98 dB | 100 Hz–11 kHz |
Each row is that model's own published table — no figure is borrowed from a sibling.
Reading the table like a buyer
For high-output car builds, the sensitivity leaders are the MD-10S30-04 and the two MD-80S30 models at 102 dB — they will play loudest on a given amplifier, and the 10 inch MD-10S30-04 pairs that with 200 W RMS handling, second in its size class only to the MD-10S50-03's 250 W. For systems where the midrange must reach down toward the subwoofer, the band edges matter more: the MD-65S10-01 reaches 90 Hz, the widest low end of the twelve, at a modest 50 W rating — a finesse choice, not a power choice. The MD-80S33-07 is the interesting outlier: an aluminium-bullet design with strong power handling (150 W) but the lowest sensitivity of the 8 inch group (94 dB) — a model for amplified systems where the bullet construction, not efficiency, is the point.
Construction notes from the tables
The twelve share a house style: paper cones with cloth edges or cloth surrounds, KSV or Kapton voice coils (up to the 60.8 mm coil in the MD-10S50-03), and ferrite magnets sized from 10 oz to 50 oz. That consistency is useful to a buyer comparing the range: one cone, coil and magnet vocabulary across the twelve makes the tables directly comparable line by line — a comparison convenience, stated as such, not a claim that parts are shared between models.
A selection drill buyers can run in one afternoon
Put the twelve tables to work with a three-step drill. First, filter by size against the vehicle or cabinet programme — this alone usually halves the list. Second, rank the survivors by sensitivity and check the ranking against your amplifier reality: a programme on head-unit power should take the 102 dB models seriously and treat the 93–94 dB models as amplifier-first choices. Third, check the band edges against your crossover plan: if the subwoofer crosses at 120 Hz, every model publishing a low edge above that needs a second look, and the wide-band models (the MD-65S10-01 down to 90 Hz, the 10 inch pair down to 95 Hz) earn a flexibility premium. What survives the drill is a two- or three-model sample order — which is where midrange buying should always end up, because the final difference between well-specified siblings is voicing, and voicing is heard, not read.
What the twelve do not tell you
Honesty about the limits of the tables matters as much as the figures. Most of the twelve publish no mounting depth, and the dimension rows that do appear state overall size, not cutout size (the MD-10S50-03 at φ258 × 83 mm overall, the MD-65S17-03 at φ166 × 63 mm overall); no cutout dimensions are published at all. None publishes a Thiele-Small set. So the tables rank the twelve electrically and acoustically, but the physical programme work — door depth, grille clearance, enclosure volume — still runs through samples and the manufacturer's stated T/S testing service. Buyers who treat a spec table as the end of due diligence, rather than its beginning, are the ones whose programmes stall at the first vehicle.
Commercial notes
Four of the twelve publish model FAQ terms: the MD-65S23-06, MD-65S20-07 and MD-65S23-05 state 500 pieces with an OEM box and 200 without; the MD-65S10-01 states 1,000 pieces with an OEM box. Confirm the term for your model in the quotation, and remember the catalogue's other 63 midrange models exist behind these twelve — if a programme needs a figure for one of them, the route is a confirmed quotation and a sample, never an assumption from a sibling model.