LF
Mid-Woofer
6"
61NPM
Code: 61NPMX8-466A
Mid-Woofer/6.5inch/Neo/Paper/100W/8ohm
Key Features
- Very good performance in mid frequencies
- Compact design that delivers very high performance
- High power handling
Quick Specs
Impedance
8 Ω
Program Power
200 W
Sensitivity
95.44 dB
Fs
92.00 Hz
Magnet
Neodymium
Voice Coil
38 mm
Design Notes
61NPM was developed for all applications where compact and lightweight t mid-woofer is required.
The driver delivers very good performance in mid-frequencies, with a good extension into the low frequencies.
Neodymium based magnetic circuit was optimized to deliver the highest level of performance.
Lightweight paper cone with glass fibers is attached to “M” roll fabric surround. It provides great combination that delivers very good performance across wide range of frequencies.
Our newly designed basket was structurally reinforced and supports the magnetic structure with ease. Furthermore, the driver sports front and rear gaskets, thus you can mount it into the baffle as front or rear mount.
The driver delivers very good performance in mid-frequencies, with a good extension into the low frequencies.
Neodymium based magnetic circuit was optimized to deliver the highest level of performance.
Lightweight paper cone with glass fibers is attached to “M” roll fabric surround. It provides great combination that delivers very good performance across wide range of frequencies.
Our newly designed basket was structurally reinforced and supports the magnetic structure with ease. Furthermore, the driver sports front and rear gaskets, thus you can mount it into the baffle as front or rear mount.
Specifications
General Specs
Nominal Diameter
6"
Rated Impedance
8 Ohm
Magnet
Neodymium
Basket Material
Steel
Power Handling
AES Power
100 W
Continuous Power
200 W
Peak Power
400 W
Voice Coil
Diameter
38 mm
Winding Wire
Copper
Former
kapton
Winding Height
10.6 mm
T/S Parameters
Resonant Frequency (Fs)
92.00 Hz
Re
5.20 \u2126
Qes
0.380
Qms
5.60
Qts
0.360
Vas
7.00 liters
Sd
143.10 cm\u00B2
Mms
12.30 grams
Rms
1.27
Cms
0.2400
Bl
9.80 T\u00B7m
Le
0.370 mH
Sensitivity
95.44 dB
Design Details
Surround Material
fabric
Cone/Dome Material
Paper CF
Spider
Nomex
T-Plate
6 mm
Xmax (peak)
2.3 mm
Xmech
8.3 mm
Overall Diameter
167.00 mm
Bolt Circle Diameter
155.00 mm
Baffle Cutout Dia.
145.90 mm
Mounting Holes
4
Depth (flange to rear)
61.50 mm
Net Weight
0.80 kg
Ordering Codes
Product Code
61NPMX8-466A
Downloads
Frequency Response & Impedance
2D Drawing
Technical Summary
This design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.
Enclosure Recommendations
ENCLOSURE RECOMMENDATIONS: 61NPMX8-466A
Driver: 61NPMX8-466A (61NPM) — 6" Mid-Woofer
Key T/S: Fs=92.0Hz, Qts=0.36, Vas=7.0L, Sens=95.44dB
Power: AES 100W / Cont 200W / Peak 400W
Xmax=2.30mm, Sd=143.1cm², Bl=9.8T·m
RECOMMENDED ENCLOSURE TYPE: Bass Reflex (Vented)
PORT RECOMMENDATION: Round port (50mm diameter) — adequate for compact enclosures with lower air volume velocity
a) High SPL
Net Volume: 6 liters
Tuning (Fb): 106 Hz
Est. -3dB: 98 Hz
HP Filter: 98 Hz (24dB/oct recommended)
Round Port: 50mm dia × 61mm long
Slot Port: 117mm W × 40mm H × 177mm L
Port Velocity: 11.1 m/s
Notes: Strong mid-bass impact, reduced cone excursion, maximum output
b) Balanced Response
Net Volume: 8 liters
Tuning (Fb): 85 Hz
Est. -3dB: 72 Hz
HP Filter: 75 Hz (24dB/oct recommended)
Round Port: 50mm dia × 69mm long
Slot Port: 117mm W × 40mm H × 196mm L
Port Velocity: 8.9 m/s
Notes: General-purpose PA/subwoofer, even response, good transient behavior
c) Extended Low Frequency
Net Volume: 10 liters
Tuning (Fb): 71 Hz
Est. -3dB: 60 Hz
HP Filter: 59 Hz (24dB/oct recommended)
Round Port: 50mm dia × 80mm long
Slot Port: 117mm W × 40mm H × 221mm L
Port Velocity: 7.5 m/s
Notes: Deep bass extension, requires proper system protection below tuning
--- Summary ---
The 61NPMX8-466A is a 6-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (95 dB 1W/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.
In bass reflex enclosures, the driver performs best in net internal volumes of 6 to 10 liters, tuned between 71 and 106 Hz. This alignment provides a balanced combination of low-frequency extension, cone control around resonance, and efficient port loading. Lower tuning improves deep bass extension but increases excursion below tuning, requiring appropriate high-pass filtering. Higher tuning increases sensitivity and output in the upper bass region while improving mechanical control.
The driver is intended for use with moderate amplification (approx. 100 W AES / 200 W continuous) and DSP control. A high-pass filter in the range of 59–98 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 60–2500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.
Frequently Asked Questions
- - Very good performance in mid frequencies
- - Compact design that delivers very high performance
- - High power handling
ENCLOSURE RECOMMENDATIONS: 61NPMX8-466A
Driver: 61NPMX8-466A (61NPM) — 6" Mid-Woofer
Key T/S: Fs=92.0Hz, Qts=0.36, Vas=7.0L, Sens=95.44dB
Power: AES 100W / Cont 200W / Peak 400W
Xmax=2.30mm, Sd=143.1cm², Bl=9.8T·m
RECOMMENDED ENCLOSURE TYPE: Bass Reflex (Vented)
PORT RECOMMENDATION: Round port (50mm diameter) — adequate for compact enclosures with lower air volume velocity
a) High SPL
Net Volume: 6 liters
Tuning (Fb): 106 Hz
Est. -3dB: 98 Hz
HP Filter: 98 Hz (24dB/oct recommended)
Round Port: 50mm dia × 61mm long
Slot Port: 117mm W × 40mm H × 177mm L
Port Velocity: 11.1 m/s
Notes: Strong mid-bass impact, reduced cone excursion, maximum output
b) Balanced Response
Net Volume: 8 liters
Tuning (Fb): 85 Hz
Est. -3dB: 72 Hz
HP Filter: 75 Hz (24dB/oct recommended)
Round Port: 50mm dia × 69mm long
Slot Port: 117mm W × 40mm H × 196mm L
Port Velocity: 8.9 m/s
Notes: General-purpose PA/subwoofer, even response, good transient behavior
c) Extended Low Frequency
Net Volume: 10 liters
Tuning (Fb): 71 Hz
Est. -3dB: 60 Hz
HP Filter: 59 Hz (24dB/oct recommended)
Round Port: 50mm dia × 80mm long
Slot Port: 117mm W × 40mm H × 221mm L
Port Velocity: 7.5 m/s
Notes: Deep bass extension, requires proper system protection below tuning
--- Summary ---
The 61NPMX8-466A is a 6-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivit...
This design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.
AES Power: 100 W,
Continuous: 200 W,
Peak: 400 W.
Sensitivity: 95.44 dB (1W/1m).
