JSB SPEAKER STUDIO
Wavecor FR040WA02NO PHOTONo photo available

Wavecor

Wavecor FR040WA02

Full-range · 1.5″ · 8 Ω

Wavecor FR040WA02: Full-range. Published Fs 239 Hz, Qts 1.23 , Vas 0.06 L. Explore these values before choosing an enclosure.

Resonance Fs
239 Hz
Nominal sensitivity
81 dB
Rated power
3 W
Excursion Xmax
0.5 mm
Design with this driver Manufacturer / original source ↗

What this driver's data tells us

Wavecor FR040WA02

Wavecor FR040WA02 is a Full-range. Its available data describe the following design trade-offs.

T/S parameters describe its bass behavior; they do not establish treble extension, directivity or whether a crossover-free system will meet your needs.

At Qts 1.23, a finite ideal sealed box cannot reach Qtc 0.707. Sealed loading remains possible, but its bass peak and damping need individual adjustment.

Qts 1.23 calls for care with a conventional flat vented alignment; check peaks and excursion before choosing a ported box.

Published sensitivity is 81 dB (2.83 V / 1 m). Sensitivity describes output for the stated input, not maximum usable sound pressure.

On an approximate 1 W / 1 m basis (81 dB), sensitivity is modest; more input power is needed for the same rated-band output.

Basis and further reading

Calculated from published parameters; this is not a listening review. Box sizes are net acoustic volume for one driver. Room gain, EQ, damping material and construction losses are excluded.

Voltage-to-power conversion uses nominal impedance. These size, cutoff and sensitivity bands are editorial guides, not audio-quality standards.

Driver character card

Explore the stats

These bars show physical quantities, not sound-quality scores. A longer bar is not always better. Open a stat to learn what it means.

Resonance · Fs239 HzDisplay range: 10–2,000 Hz · log

The driver's free-air resonance. A lower value can help a bass design, but the enclosure, excursion and response determine usable bass. It is not the finished speaker's bass cutoff.

Sensitivity81 dBDisplay range: 65–115 dB

Output at the manufacturer's stated input and distance. 1 W and 2.83 V are different references for many impedances. This card keeps the original value and reference; it is not an efficiency or sound-quality rating.

Resonance damping · Qts1.23 Display range: 0–1.5

Electrical and mechanical damping combined. Lower values indicate stronger damping at resonance. It helps choose an enclosure alignment, but does not tell you whether the sound is fast, warm or detailed.

Suspension compliance · Vas0.06 LDisplay range: 0.1–1,000 L · log

The volume of air with the same compliance as the suspension. It is not a recommended box volume. Use it together with Fs and Qts.

Linear excursion · Xmax0.5 mmDisplay range: 0–30 mm

Published linear excursion. Definitions differ between manufacturers; verify one-way versus peak-to-peak values. It does not by itself predict distortion or maximum safe output.

Radiating area · Sd7.8 cm²Display range: 1–1,500 cm² · log

Effective radiating area, not the frame's outside diameter. It helps estimate how much air a cone moves when combined with excursion.

Sensitivity reference: 2.83V/1m

Which enclosure could work?

Screening guidance from the available parameters, not a guarantee. A manufacturer's exact-model enclosure plan takes priority. Listening quality cannot be ranked from T/S parameters.

Sealed

Needs careful design

A sealed box raises system Q above the driver's Qts. Qtc 0.707 is not achievable with this Qts in the ideal sealed model; examine the resonance and larger-box options.

Fs 239 Hz · Qts 1.23 · Vas 0.06 L

Bass reflex

Needs careful design

The usual simple bass-reflex starting range does not settle this choice. Model the actual volume and tuning; do not reject or recommend the driver from Qts alone.

Fs 239 Hz · Qts 1.23 · Vas 0.06 L

Transmission line / quarter-wave

Needs careful design

Fs helps set a starting length, but taper, area, driver position and damping determine the result. There is no universal Qts pass/fail rule.

Fs 239 Hz · Qts 1.23

Back-loaded horn

Needs careful design

Its full-range role makes a back-loaded design worth investigating, but that is not proof of horn suitability. Check the exact model's recommended plan.

Use an exact-model manufacturer plan or a dedicated horn model. Qts alone cannot establish suitability. Throat, mouth, path and rear chamber must be designed together; this page does not simulate horns.

Fs 239 Hz · Qts 1.23
Explore other enclosure types

Mass-loaded transmission line

Needs careful design

The line and outlet act together. Tube length, area, damping and port mass require a coupled model; a bass-reflex preset is not an MLTL design.

Fs 239 Hz · Qts 1.23

Passive radiator system

Needs careful design

Potentially useful when a practical port is difficult, but the passive radiator's area, mass, compliance and excursion must be matched separately.

Fs 239 Hz · Qts 1.23

Double bass reflex

Needs careful design

Two chambers and two ducts interact. Check their combined resonances with the dedicated model; these parameters alone do not establish an advantage over bass reflex.

Fs 239 Hz · Qts 1.23

Open baffle

Needs careful design

Front and rear bass cancel without an enclosure. Panel size, equalization and excursion matter. Low Qts is not an automatic rejection when EQ is available.

Fs 239 Hz · Qts 1.23
Basis and further reading

Bass mini-lab

Move the volume slider. Both curves use the same box volume; the bass-reflex tuning is adjustable.

-36-24-120121020501002005001000Relative bass response (dB)Hz
Sealed: F3 194.2 Hz · peak 3.6 dBBass reflex: F3 165.9 Hz · peak 11.2 dB

Illustrative small-signal T/S models, not an optimized recommendation or a measured speaker. No room gain, diffraction, port losses, excursion limit or power compression is included. The initial tuning equals Fs and must be adjusted for a real build.

Read the graph as numbers
Frequency (Hz)Sealed (dB)Bass reflex (dB)
20-45.5-86.1
50-29.4-53.6
100-16.7-27
200-2.44.9
5001.94.4
10000.51

Frequency response Response

Common scale for all drivers: 20–20,000 Hz
Wavecor FR040WA0220 Hz — 20 kHz · Logarithmic axis
40455055606570758085909520501002005001k2k5k10k20kdB SPLHz
Source SPL curveRecorded range: 20〜40,000 HzUnavailable or missing ranges are left blank.
Automatically validated response dataCheck the original source for the measurement reference.Response source ↗

What do published reviews say?

Attributed summaries, not our listening test or a consensus score. The enclosure, crossover, room and listening level affect each review. Exact model and impedance are checked.

No exact-model listening review has been verified for this page yet. We do not infer tonal quality from T/S parameters or borrow reviews of similar model names.

Compare prices

Compare in USD, EUR or JPY. Prices exclude shipping.

More from this manufacturer

Wavecor — view all →