The Fluid Audio Coaxial speaker design is notably different from traditional coaxial designs. Coaxial monitors in the 50’s and 60’s placed the high frequency driver behind the woofer, “porting” the high frequency through the woofer’s voice coil opening. This design effectively used the woofer’s cone as the wave guide, or horn. Since the woofer’s cone is constantly moving (sometimes dramatically as it plays bass frequencies), there is a significant amount of Intermodulation distortion and audible smearing that happens as the high frequency radiates off the woofer’s cone.

 

The coaxial design of the Fluid Audio FX and FPX series places the high frequency device in front of the woofer, secured to a fixed post. The tweeter is mounted in a hard plastic wave guide that allows the high frequencies to flow uninterrupted, so there is no audio smearing from the woofer’s movements. By using the on-board DSP, 48 and 36db per octave Linkwitz-Riley slopes not only perfectly blend the low and high frequencies, but are also used to filter out acoustic anomalies inherent in coax designs (as the tweeter does not have a full size baffle to radiate from.) In addition to these unique benefits, users get all the other known benefits of a coaxial driver – Symmetrical off-axis response (which creates a bigger, more even and consistent sweet spot) and that of being a “point source” device, which allows better phase coherence between drivers resulting in extremely realistic imaging. Whether upright or laid on its side, the Fluid Coaxial design will perform identically making studio positioning easier and more user friendly.

 

Front-loaded slot port design
The bass-reflex slot port tunes the cabinet to maximize the bass output efficiency of the speaker. It is placed on the front panel not only to directly radiate the bass energy towards the listener, but also for flexibility of placement in your studio.

Updated Tweeter Grille protection
The FX coax design, with the tweeter suspended in the middle of the woofer,
is very robust. As such, it provides outstanding protection for the woofer itself. However, the tweeter needs protection as well, this is why we added a small, steel perforated grille to protect the delicate silk diaphragm of the tweeter.

"Imaging and Depth"
It's one thing to put high quality speaker drivers in a cabinet with an amplifier and call it a great speaker. But for a transparent reference monitor, that is only the beginning. 

Painstaking crossover design and listening sessions were undertaken to optimize not only a flat on-axis frequency response, but a depth of soundstage that has become the hallmark of Fluid Audio monitors.
This ensures that your mix will not only sound great on your FX speakers, but will translate to speaker systems outside the studio as well.

Specifications

• Frequency response: 35Hz-22kHz (+/- 3dB)
• Crossover frequency: 2.4kHz
• Low-frequency amplifier power: 60 watts
• High-frequency amplifier power: 50 watts
• Signal-to-noise: 90dB (typical A-weighted)
• Polarity: Positive signal at + input produces outward LF one displacement
• Input impedance: 20 k ohms balanced, 10 k ohms unbalanced
• Input sensitivity: 85 mV pink noise input produces 95dBA output SPL @ one meter with volume control at maximum
• Power: 100V-240V ~50/60 Hz
• Protection: RF interference, output current limiting, over temperature, turn-on/off transient, subsonic filter, external mains fuse
• Cabinet: Vinyl-laminated MDF
• Size (single monitor): 340*254*295 / 13.4*10*11.6
• Weight (each): 7.8 kg / 17.2 lbs

Model	C5	C5BT	F4	F5	FX8	FPX7	FX50	FX80
Configuration	2-way	2-way	2-way	2-way	2-way Coax	2-way Coax	2-way Coax	2-way Coax
System Type	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor	Active Studio Monitor
Woofer	5" paper pulp composite cone	5" paper pulp composite cone	4" paper pulp composite cone	5" paper pulp composite cone	8" paper pulp composite cone	7" composite cone	5" paper pulp composite cone	8" paper pulp composite cone
Mid Driver
Tweeter	1" PEI diaphragm	1" PEI diaphragm	1" Soft Dome	1" Soft Dome	1.2" Soft Dome	L43.5*W28 AMT	1" Soft Dome	1.2" Soft Dome
Frequency Response	54Hz - 22KHz (+/- 3db)	54Hz - 22KHz (+/- 3db)	69Hz - 22KHz (+/- 3db)	49Hz - 22KHz (+/- 3db)	35Hz - 22KHz (+/- 3db)	42Hz - 27KHz (+/- 3db)	49Hz - 22KHz (+/- 3db)	35Hz - 22KHz (+/- 3db)
Max Peak SPL	97db	97db	98db	101db	102db	106db
Amplifier Class	CLASS AB	CLASS AB	CLASS AB	Bi-Amped CLASS AB	Bi-Amped CLASS AB	Bi-Amped CLASS AB	Bi-Amped CLASS D	Bi-Amped CLASS D
Power Output	40W (2x20W)	40W (2x20W)	30W (2x15W)	70W	130W	130W	90W	110W
High Frequency				30W	50W	50W	40W	50W
Mid-Frequency
Low Frequency				40W	80W	90W	50W	60W
Input Impedence	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced	20KΩ Balanced / 10KΩ unbalanced
HF Level Adjust						Y	Y	Y
MF Level Adjust							Y	Y
System Volume	-23dB to +6dB	-23dB to +6dB	-23dB to +6dB	-23dB to +6dB	-30dB to +6dB	-30dB to +6dB	-23dB to +6dB	-30dB to +6dB
Indicators	Power	Power	Power / Standby	Power / Standby	Power / Standby	Power / Standby	Power / Standby	Power / Standby
Standby Function	No	No	Yes	Yes	Yes	Yes	Yes	Yes
Inputs	Balanced TRS, Unbalanced RCA	Balanced TRS, Unbalanced RCA, optical toslink, bluetooth 4.0 aptX	Balanced TRS, Unbalanced RCA	Balanced TRS, Balanced XLR, Unbalanced RCA	Balanced TRS, Balanced XLR, Unbalanced RCA	Balanced TRS, Balanced XLR, Unbalanced RCA	Balanced TRS, Balanced XLR, Unbalanced RCA	Balanced TRS, Balanced XLR, Unbalanced RCA
Enclosure Construction	MDF	MDF	MDF	MDF	MDF	MDF	MDF	MDF
Finish	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap	Black Vinyl Wrap
Port Configuration	Rear Firing Port	Rear Firing Port	Rear Firing Port	Front Firing Slot Port	Front Firing Slot Port	Front Firing Slot Port	Front Firing Slot Port	Front Firing Slot Port
Depth	7.6" / 193 mm	7.6" / 193 mm	6.78" / 172 mm	7.68" / 195 mm	10.6" / 270 mm	10.5" / 264 mm	9.1" / 230 mm	11.6" / 295 mm
Width	6.85" / 174 mm	6.85" / 174 mm	5.9" / 150 mm	6.92" / 176 mm	10" / 254 mm	8.5" / 216 mm	6.9" / 176 mm	10" / 254 mm
Height (D X W X H)	10.1" / 256 mm	10.1" / 256 mm	8.74" / 222 mm	10.23" / 260 mm	13.4" / 340 mm	12.1" / 308 mm	9.2" / 234 mm	13.4" / 340 mm
Weight	15.4 Lbs. (7 Kg.) pair	15.9 Lbs. (7.2 Kg.) pair	13.2 Lbs. (6 Kg.) pair	20.3 Lbs. (9.2 Kg.)pair	41.4 Lbs. (18.8 Kg.)pair	22 Lbs. (10 Kg.) single	8.4 Lbs. (3..8 Kg.) single	17.2 Lbs. (7.8 Kg.) single