LF
Mid-Woofer
6"
61FHM
Code: DR-6-004-8R-B2-C0001
Mid-Woofer/6.5inch/Ferrite/Aluminium/60W/8ohm
Key Features
- EXTENDED FREQUENCY RESPONSE
- Hard anodized aluminum cone, aluminum basket
- Designed for hi-fi and outdoor applications
Quick Specs
Impedance
8 Ω
Program Power
120 W
Sensitivity
87.77 dB
Fs
37.00 Hz
Magnet
Ferrite
Voice Coil
38 mm
Design Notes
61FHM mid-woofer was designed for outdoor applications, yet it will shine in hi-fi home and studio applications as well.
Optimized ferrite based magnetic circuit with good air-venting features ensures long lasting performance.
Our engineers have chosen hard-anodized cone with rubber surround for this model. Both of these components are produced with UV stabilizers. Furthermore, REDCATT state of the art adhesives and dispensing techniques ensures waterproof seals in all weather exposed glue joints. Sealing to the exposure can be guaranteed by EVA gaskets or based upon a request by Form In Place Gaskets.
The audio system designers can rest assured we have extensively tested this product with UV exposure, salt exposure and waterproofing.
The extended mid-frequency response allows the systems to be used with higher resonance frequency HF units. For the best performance in the audio systems, we recommend usage in sealed enclosures. In this model the aluminum cone further improves the mid-frequency response and lowers the harmonic distortion artifacts.
Optimized ferrite based magnetic circuit with good air-venting features ensures long lasting performance.
Our engineers have chosen hard-anodized cone with rubber surround for this model. Both of these components are produced with UV stabilizers. Furthermore, REDCATT state of the art adhesives and dispensing techniques ensures waterproof seals in all weather exposed glue joints. Sealing to the exposure can be guaranteed by EVA gaskets or based upon a request by Form In Place Gaskets.
The audio system designers can rest assured we have extensively tested this product with UV exposure, salt exposure and waterproofing.
The extended mid-frequency response allows the systems to be used with higher resonance frequency HF units. For the best performance in the audio systems, we recommend usage in sealed enclosures. In this model the aluminum cone further improves the mid-frequency response and lowers the harmonic distortion artifacts.
Specifications
General Specs
Nominal Diameter
6"
Rated Impedance
8 Ohm
Magnet
Ferrite
Basket Material
Aluminum
Power Handling
AES Power
60 W
Continuous Power
120 W
Peak Power
240 W
Voice Coil
Diameter
38 mm
Winding Wire
CCAW
Former
Glass Fiber
Winding Height
17.6 mm
T/S Parameters
Resonant Frequency (Fs)
37.00 Hz
Re
5.80 \u2126
Qes
0.520
Qms
11.01
Qts
0.490
Vas
28.20 liters
Sd
132.70 cm\u00B2
Mms
16.40 grams
Rms
0.35
Cms
1.1300
Bl
6.60 T\u00B7m
Le
0.400 mH
Sensitivity
87.77 dB
Design Details
Surround Material
NBR
Cone/Dome Material
Aluminum
Spider
Nomex
T-Plate
5 mm
Xmax (peak)
6.3 mm
Xmech
11.3 mm
Overall Diameter
181.50 mm
Bolt Circle Diameter
169.50 mm
Baffle Cutout Dia.
151.00 mm
Mounting Holes
6
Depth (flange to rear)
78.60 mm
Net Weight
1.61 kg
Ordering Codes
Product Code
DR-6-004-8R-B2-C0001
Downloads
Frequency Response & Impedance
2D Drawing
Technical Summary
The 61FHMX8-430A is a 6-inch mid-woofer driver designed for hi-fi two-way and compact speaker systems, home theater, in-wall and in-ceiling installations, and automotive applications. It operates at 87.8 dB sensitivity (1W/1m). The driver features a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.
The driver is intended for use with moderate amplification (approx. 60 W AES / 120 W continuous) and DSP control. A high-pass filter in the range of 23-35 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 30-2500 Hz, covering bass through mid frequencies and allowing integration with a tweeter or compression driver in a two-way hi-fi system.
This design is particularly effective in single or multi-driver bass reflex systems used in hi-fi two-way and compact speaker systems, home theater, in-wall and in-ceiling installations, and automotive applications, where extended low-frequency response, wide operating bandwidth, and compact form factor are the primary design priorities.
The driver is intended for use with moderate amplification (approx. 60 W AES / 120 W continuous) and DSP control. A high-pass filter in the range of 23-35 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 30-2500 Hz, covering bass through mid frequencies and allowing integration with a tweeter or compression driver in a two-way hi-fi system.
This design is particularly effective in single or multi-driver bass reflex systems used in hi-fi two-way and compact speaker systems, home theater, in-wall and in-ceiling installations, and automotive applications, where extended low-frequency response, wide operating bandwidth, and compact form factor are the primary design priorities.
Recommended enclosure volumes are simulated results. For best enclosure volumes and tuning, we recommend secondary simulation and careful evaluation. Several rounds of samples and fine-tuning may be required for optimal results.
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 8 liters tuned to 43 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 40 Hz, HP filter 35 Hz - 10 liters tuned to 39 Hz: balanced response, general-purpose (recommended); -3 dB approx. 36 Hz, HP filter 29 Hz - 10 liters tuned to 35 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 30 Hz, HP filter 23 Hz
Frequently Asked Questions
- - EXTENDED FREQUENCY RESPONSE
- - Hard anodized aluminum cone, aluminum basket
- - Designed for hi-fi and outdoor applications
Recommended enclosure alignments (bass reflex): - 8 liters tuned to 43 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 40 Hz, HP filter 35 Hz - 10 liters tuned to 39 Hz: balanced response, general-purpose (recommended); -3 dB approx. 36 Hz, HP filter 29 Hz - 10 liters tuned to 35 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 30 Hz, HP filter 23 Hz
Compact 2-way pa top or hi-fi mid-woofer
AES Power: 60 W,
Continuous: 120 W,
Peak: 240 W.
Sensitivity: 87.77 dB (1W/1m).
