GRS PT6825-8
tweeter · nominal (partial) — GRS datasheet (https://www.parts-express.com/pedocs/specs/272-126--grs-pt6825-8-spec-sheet.pdf)
Thiele/Small parameters
| Fs (resonance) | — |
| Qts | 2.06 |
| Qes / Qms | — / 2.17 |
| Vas | — |
| Re / nominal Z | 6.4 Ω / 8 Ω |
| Xmax | — |
| Sensitivity | 92 dB (2.83 V/1 m, mfr) |
| Power handling | 35 W |
Published (nominal) values, params partial — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
This is a tweeter; Thiele/Small box parameters are not used for enclosure design.
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About this driver
The GRS PT6825-8 is a 4″ tweeter and a total Q (Qts) of 2.06. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThese woofers and midranges could pair with the GRS PT6825-8 in a two-way design, but the seed Thiele/Small data is too thin to grade the match yet — add or measure T/S (Fs, Sd, Xmax) to compute a real compatibility grade. You can still open a pair in the guided builder.
- Dayton Audio AMTHR-4Insufficient data to grade
Crossover not modelable yet — woofer needs published Thiele/Small data.
Build this pair → - Dayton Audio CE65W-8Insufficient data to grade
Crossover not modelable yet — fullrange needs published Thiele/Small data.
Build this pair → - Dayton Audio DA115-8Insufficient data to grade
Crossover not modelable yet — woofer needs published Thiele/Small data.
Build this pair → - Dayton Audio DA135-8Insufficient data to grade
Crossover not modelable yet — woofer needs published Thiele/Small data.
Build this pair → - Dayton Audio DA175-8Insufficient data to grade
Crossover not modelable yet — woofer needs published Thiele/Small data.
Build this pair → - Dayton Audio DA215-8Insufficient data to grade
Crossover not modelable yet — woofer needs published Thiele/Small data.
Build this pair →
Modeled estimate from T/S + geometry — no measurements. The verdict is robust; it improves with measured FRD/ZMA data.