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18 December 2024

CANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cable

Stock code
54-314
Brand
Canford
Model number
  • HD480
GTIN
5056704715851
CANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cable

Image may be provided for illustrative purposes only, please refer to the product description.

CANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cableCANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cableCANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cableCANFORD LEVEL LIMITED HEADPHONES HD480 93dBA, wired split-feed, Ntk B-gauge plug, s/s coiled cable

CANFORD LEVEL LIMITED HEADPHONES

Canford has considerable experience in the design of headphone limiters and their use in the operational environment. Whilst virtually any headphone or headset can have a limiter fitted, using one of the seven types of standard multipurpose limiter circuits, this usually has to be in an in-line housing. By designing type-specific circuits for individual ear loudspeakers, these can be made small enough and appropriately shaped to enable them to be built into the earcup housing. Adding a limiter circuit to a headphone alters the input impedance.

For level limited headsets, see CANFORD LEVEL LIMITED HEADSETS.

Sennheiser (HD480, HD25, HD280 PRO)


HD480

The Sennheiser HD480 type headphone is an open back type headphone with 1700 ohm capsules. In order to distinguish these headphones from standard non-protected versions, they are distinctively marked on the ear shell. Limiting level is fixed at 85dBA (green trim ring), 88dBA (red trim ring) or 93dBA (grey or blue trim ring) (note 1). Standard connector options are available, and because the limiter is within the capsule, it is possible to use spare or replacement leads, as for standard versions.

All types have interwoven copper/Kevlar cables for extra strength. As with in-line limiters, each headphone is individually calibrated, and as each capsule has its own individually calibrated limiter, spare limited capsules are available.

Single-sided cables connect to the left earpiece, with a loop over the headband to the right earpiece; a fixing kit is supplied to hold the cable onto the headband. Note that in these versions, the earpieces are mounted onto the headband the opposite way up (connector at the top).

Frequency response: 20-20000Hz. Input impedance: 1200 ohms per earpiece. Sensitivity: 91dB for 1mW. Weight: 140g

Code Code Code Wiring Cable type Plug Spare cable
85dBA 88dBA 93dBA
- 54-4010 - - - No cable supplied -
- 54-4011 54-305 Stereo Dual-side 3.5mm 3-pole (stereo) plug 54-167
- 54-4012 54-304 Stereo Dual-side Neutrik 3-pole (stereo) A-gauge plug 54-044
- 54-4013 54-303 Stereo Dual-side Switchcraft B-gauge with black cover 54-043
- 54-4015 54-302 Split feed Dual-side Neutrik B-gauge with blue cover 54-042
- 54-4022 54-306 Stereo Single-side 3.5mm 3-pole moulded plug with 6.35mm adapter 54-046
- 54-4024 54-315 Stereo Single-side 4.4mm Bantam type jack moulded cover -
54-4132 54-4032 - Stereo Single-side, coiled 3.5mm 3-pole moulded plug 54-036
54-4133 54-4033 54-311 Stereo Single-side, coiled Neutrik 3-pole (stereo) A-gauge plug 54-065
- 54-4034 54-312 Stereo Single-side, coiled Neutrik 3-pole (stereo), right-angled, A-gauge plug, black -
54-4137 54-4037 - Stereo Single-side, coiled Neutrik B-gauge with black cover 54-070
- 54-4036 54-314 Split feed Single-side, coiled Neutrik B-gauge with blue cover 54-039
- 54-4035 54-313 Split feed Single-side, coiled Switchcraft B-gauge with black cover 54-038

HD25

Closed ear designs with extremely high external noise attenuation. Flip-away earcups, can be locked securely in place. High wearing comfort due to a splittable headband and leather-effect earpads. Single-sided, coiled 1.5m cable (3m extended), steel cored for reliability, supplied fitted with a straight 3.5mm 3-pole jack plus adapter to 6.35mm A-gauge 3-pole jack plug.

Impedance 70 ohms. Frequency response 16-22000 Hz, 200mW load rating.

Code Code Code Wiring Cable type Plug Spare cable
85dBA 88dBA 93dBA
- 54-4089 - Stereo Single-side, straight 3.5mm 3-pole moulded plug with 6.35mm adapter -
- 54-4085 - Stereo Single-side, coiled 3.5mm 3-pole moulded plug with 6.35mm adapter -
- - 54-326 Stereo Single-side, coiled 3.5mm 3-pole moulded plug with 6.35mm adapter -
Limited spare cables
Code Code Code Wiring Cable type Plug
85dBA 88dBA 93dBA
- 54-4097 54-328 Stereo Single-side, straight 3.5mm 3-pole moulded plug with 6.35mm adapter -
- 54-4096 54-327 Stereo Single-side, coiled 3.5mm 3-pole moulded plug with 6.35mm adapter -

HD280 PRO

Closed back circumaural headphones with high noise attenuation. Folding and rotating ear cups have been integrated on this updated version for easier transportation. Single-sided coiled cable with 3.5mm 3-pole jack, plus screw-on adapter to 6.35mm jack. Frequency response 8 to 25000Hz. SPL 113dB. Weight 285g. Nominal impedance 64 ohms. Supplied limited at 88dBA.

Beyerdynamic (DT100, DT250, DT770-Pro)

Canford (DMH205, DMH620)

Sony (MDR-7506)

Shure (SRH440, SRH840)

Notes

1) The quoted limit level of 93dBA, 88dBA and 85dBA is for measurement using dummy head (or mannequin) systems. For measurements using flat plate calibrators the level will differ. Health and Safety authorities are more inclined to use the dummy head type measurement.
2) Due to the enclosed circuitry, the sensitivity and presented impedance of these headphones is different from standard versions.

Spares

Certain ear loudspeakers and cables are listed as spares in a group. For further information, see CANFORD LEVEL LIMITED HEADPHONES AND HEADSETS Spare parts.