JSB SPEAKER STUDIO
Visaton BF45S-8NO PHOTONo photo available

Visaton

Visaton BF45S-8

Full-range · — · 8 Ω

Visaton BF45S-8: Full-range. Published Fs 160 Hz, Qts Not recorded, Vas Not recorded. Explore these values before choosing an enclosure.

Resonance Fs
160 Hz
Nominal sensitivity
79 dB
Rated power
4 W
Excursion Xmax
—
Design with this driver Manufacturer / original source ↗

What this driver's data tells us

Visaton BF45S-8

Visaton BF45S-8 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.

The database lacks Qts, Vas. A dependable enclosure-size and bass-extension assessment needs those values; none have been guessed.

Published sensitivity is 79 dB (1 W / 1 m). Sensitivity describes output for the stated input, not maximum usable sound pressure.

On an approximate 1 W / 1 m basis (79 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 · Fs160 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.

Sensitivity79 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 · QtsNot recordedDisplay 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 · VasNot recordedDisplay 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 · XmaxNot recordedDisplay 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 · SdNot recordedDisplay 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: 1W/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

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded · Vas Not recorded

Bass reflex

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded · Vas Not recorded

Transmission line / quarter-wave

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded

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 160 Hz · Qts Not recorded
Explore other enclosure types

Mass-loaded transmission line

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded

Passive radiator system

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded

Double bass reflex

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded

Open baffle

More data needed

Fs, Qts and Vas are needed for the basic box model. Missing values are not estimated here.

Fs 160 Hz · Qts Not recorded
Basis and further reading

Bass mini-lab

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

The mini-lab needs valid Fs, Qts and Vas for a bass driver. It stays unavailable when those inputs are missing or the driver has another role.

Frequency response Response

Common scale for all drivers: 20–20,000 Hz

No usable response data is recorded

Unavailable response data is not guessed or plotted.

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.

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