Sealed
Worth tryingFs, Qts and Vas allow a sealed-box calculation. Qts is below 0.707, so a Qtc 0.707 target may be explored; actual size and output limits still matter.
Fs 34 Hz · Qts 0.64 · Vas 107 L
NO PHOTONo photo availablePeerless by Tymphany
Peerless by Tymphany SLS-P830669
Woofer · 12.01″ · 8 Ω
Peerless by Tymphany SLS-P830669: Woofer. Published Fs 34 Hz, Qts 0.64 , Vas 107 L. Explore these values before choosing an enclosure.
- Resonance Fs
- 34 Hz
- Nominal sensitivity
- 88.7 dB
- Rated power
- 100 W
- Excursion Xmax
- 10.9 mm
What this driver's data tells us
Peerless by Tymphany SLS-P830669
Peerless by Tymphany SLS-P830669 is a Woofer. Its available data describe the following design trade-offs.
With Fs 34 Hz, Qts 0.64 and Vas 107 L, an ideal maximally flat sealed reference (Qtc 0.707) is approximately 484.8 L, with a −3 dB cutoff of 37.6 Hz.
The reference exceeds 80 L. This alignment calls for a large cabinet; shrinking it changes damping and bass response.
The calculated sealed cutoff is 40 Hz or below, a promising starting point for extending low bass without a port.
Qts 0.64 calls for care with a conventional flat vented alignment; check peaks and excursion before choosing a ported box.
Published sensitivity is 88.7 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 (88.7 dB), sensitivity is in a moderate range.
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 · Fs34 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.
Sensitivity88.7 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 · Qts0.64 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 · Vas107 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 · Xmax10.9 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 · Sd523 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.
Bass reflex
Needs careful designThe 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 34 Hz · Qts 0.64 · Vas 107 LTransmission line / quarter-wave
Needs careful designFs helps set a starting length, but taper, area, driver position and damping determine the result. There is no universal Qts pass/fail rule.
Fs 34 Hz · Qts 0.64Back-loaded horn
Needs careful designUse 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 34 Hz · Qts 0.64Explore other enclosure types
Mass-loaded transmission line
Needs careful designThe 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 34 Hz · Qts 0.64Passive radiator system
Needs careful designPotentially useful when a practical port is difficult, but the passive radiator's area, mass, compliance and excursion must be matched separately.
Fs 34 Hz · Qts 0.64Double bass reflex
Needs careful designTwo 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 34 Hz · Qts 0.64Open baffle
Needs careful designFront 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 34 Hz · Qts 0.64Basis and further reading
Bass mini-lab
Move the volume slider. Both curves use the same box volume; the bass-reflex tuning is adjustable.
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 | -11.4 | -15.3 |
| 50 | -1.2 | 4.3 |
| 100 | -0.1 | 1 |
| 200 | 0 | 0.3 |
| 500 | 0 | 0 |
| 1000 | 0 | 0 |
Frequency response Response
Common scale for all drivers: 20–20,000 HzPeerless by Tymphany SLS-P83066920 Hz — 20 kHz · Logarithmic axis
Automatically validated response data2.83V/1mResponse 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
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