JSB SPEAKER STUDIO
Scan-Speak R1904/613001NO PHOTONo photo available

Scan-Speak

Scan-Speak R1904/613001

Speaker driver · 0.75″ · —

Scan-Speak R1904/613001: Speaker driver. Published Fs 1,000 Hz, Qts 1.61 , Vas Not recorded. Explore these values before choosing an enclosure.

Resonance Fs
1,000 Hz
Nominal sensitivity
87 dB
Rated power
—
Excursion Xmax
—
Design with this driver Manufacturer / original source ↗

What this driver's data tells us

Scan-Speak R1904/613001

Scan-Speak R1904/613001 is a Speaker driver. Its available data describe the following design trade-offs.

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

Qts 1.61 calls for care with a conventional flat vented alignment; check peaks and excursion before choosing a ported box.

Published sensitivity is 87 dB, but its input/distance reference is unconfirmed. A high/low comparison with other drivers would be unreliable.

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 · Fs1,000 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.

Sensitivity87 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 · Qts1.61 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 · 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 · Sd3.8 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: Nominal (reference unverified)

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 1,000 Hz · Qts 1.61 · 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 1,000 Hz · Qts 1.61 · 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 1,000 Hz · Qts 1.61

Back-loaded horn

Needs careful design

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 1,000 Hz · Qts 1.61
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 1,000 Hz · Qts 1.61

Passive radiator system

More data needed

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

Fs 1,000 Hz · Qts 1.61

Double bass reflex

More data needed

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

Fs 1,000 Hz · Qts 1.61

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 1,000 Hz · Qts 1.61
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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