REL R-305

[Ilkka]

Manufacturer: REL
Model: R-305
Provided by: Mr Hifi
Manufacturer link: REL R-305
Price: $1595

Manufacturer specs:
Enclosure Type: Closed box loading
Roll Off: 25Hz to 100Hz
Input Connectors: Neutrik Speakon - High Level, Phono – LFE, Phono - LINE
Amplifier Type: Switching Amplifier
Input Sensitivity: Low Level 40 dB, High Level 22 dB
Drive Unit: 10" Heavy Duty Long Throw Cast Frame
Power Output: 300 Watts RMS
Phase: 0 and 180 Degrees
Mains Input: 110 or 230 Volts (Depending on country)
Protection: Over Current, Over Voltage
Mains Fuses: 2.5 Amp semi delay for 230 Volts, 3.15 Amp semi delay for 110 Volts
Dimensions (WxHxD): 12.5 x 14.25 x 13.5 inches including feet, controls and grille
Net Weight: 41 lbs / 18.6 kg
Gross Weight: 46.4 lbs / 21.1 kg

Configuration as tested:
Phase: 0 degrees
Orientation: Woofer facing the mic

[Ilkka]

+/- 3 dB points: 23 Hz - 80 Hz

[Ilkka]

[Ilkka]

A very compact and a good-looking subwoofer. The overall build quality is high. A natural 12 dB/oct. final roll off shows the absence of HP filtering. Frequency response doesn't go much higher than 60 Hz even with the crossover disabled, so you shouldn't use this sub with small speakers requiring over 60-70 Hz crossover. The shape of the frequency response suits for smaller rooms with lots of deep bass room gain. Mid bass output goes up to 100 dB, but the deep bass output is limited below 90 dB. Subwoofer shows extremely high deep bass output compression. It is also quite a distortion generator; THD is high in upper bass range, but literally skyrockets below 40-50 Hz. THD consists of both low and high order components which is really audible. Group delay stays extremely low at all frequencies. Spectral decay shows only little ringing. Spectral contamination shows much lower than average maximum output capability. The subwoofer struggled even at the lowest 90 dB test level. This subwoofer likes small spaces and is strongly geared towards low level music use.

+ Good shape of the frequency response for smaller rooms
+ Good extension
+ Extremely low group delay and fast decay rate
+ Size and looks

- Extremely high overall distortion
- Really high deep bass output compression
- Low maximum output capability
- Low highest crossover setting
- Price