Installation: Hh Electronics Aptur Range Coaxial Ceiling Loudspeaker User Manual

Content

Overview

The Aptur Range Coaxial Ceiling Loudspeaker is a family of discreet, two-way ceiling speakers designed for background music and clear voice reproduction in commercial interiors. It is suited to hospitality, corporate, retail, and similar installed-audio environments where clean aesthetics and even sound coverage matter.

This Aptur Range Coaxial Ceiling Loudspeaker line is built around coaxial driver technology for balanced output across the listening area, with the smaller models adding custom horn flare shaping to improve consistency and clarity. The range is intended for installations that need reliable line-level or low-impedance operation and simple integration into ceiling structures.

Specifications

APT-C4

System type: 2-way coaxial ceiling loudspeaker
Driver: 4-inch Celestion coaxial driver with 1.25-inch LF voice coil and 0.75-inch HF voice coil
Power options: 24W, 12W, 6W at 100V; 24W, 12W, 6W, 3W at 70V
Nominal impedance: 8 ohms
Power rating: 75W AES, 150W continuous, 300W peak
Sensitivity: 87 dB (1W/1m)
Maximum SPL: 105 dB SPL, 111 dB SPL peak
Frequency response: 90Hz–20kHz
Dispersion: 110°
Cutout diameter: 213mm
Outer diameter: 248mm
Max depth: 180.5mm

APT-C6

System type: 2-way coaxial ceiling loudspeaker
Driver: 6.5-inch Celestion coaxial driver with 1.5-inch LF voice coil and 1-inch HF voice coil
Power options: 60W, 30W, 15W at 100V; 60W, 30W, 15W, 7.5W at 70V
Nominal impedance: 8 ohms
Power rating: 120W AES, 240W continuous, 480W peak
Sensitivity: 90 dB (1W/1m)
Maximum SPL: 110 dB SPL, 116 dB SPL peak
Frequency response: 70Hz–20kHz
Dispersion: 120°
Cutout diameter: 273mm
Outer diameter: 308mm
Max depth: 197.5mm

APT-C8

System type: 2-way coaxial ceiling loudspeaker
Driver: 8-inch Celestion coaxial driver with 1.5-inch LF voice coil and 1-inch HF voice coil
Power options: 60W, 30W, 15W at 100V; 60W, 30W, 15W, 7.5W at 70V
Nominal impedance: 8 ohms
Power rating: 120W AES, 240W continuous, 480W peak
Sensitivity: 92 dB (1W/1m)
Maximum SPL: 112 dB SPL, 118 dB SPL peak
Frequency response: 60Hz–20kHz
Dispersion: 120°
Cutout diameter: 298mm
Outer diameter: 333mm
Max depth: 207.5mm

APT-C8S

System type: ceiling mount subwoofer
Driver: 8-inch HH-designed low-frequency driver
Power options: 100W, 50W, 25W, 13W at 100V; 100W, 50W, 25W, 13W, 6W at 70V
Nominal impedance: 8 ohms
Power rating: 100W AES, 200W continuous, 400W peak
Sensitivity: 89 dB (1W/1m)
Maximum SPL: 109 dB SPL, 115 dB SPL peak
Frequency response: 40Hz–200Hz
Cutout diameter: 298mm
Outer diameter: 333mm
Max depth: 207.5mm

APT-CL63

System type: full-range column array loudspeaker
Drivers: 6 x Celestion full-range neodymium drivers
Power options: 100W, 50W, 25W, 13W at 100V; 100W, 50W, 25W, 13W, 6W at 70V
Nominal impedance: 8 ohms
Power rating: 120W AES, 240W continuous, 480W peak
Sensitivity: 91 dB (1W/1m)
Maximum SPL: 111 dB SPL, 117 dB SPL peak
Frequency response: 160Hz–20,000Hz
Horizontal dispersion: 120°
Vertical dispersion: 12°
Unit dimensions: 466mm x 100mm x 150mm

APT-CL103

System type: full-range column array loudspeaker
Drivers: 10 x Celestion full-range neodymium drivers
Power options: 100W, 50W, 25W, 13W at 100V; 100W, 50W, 25W, 13W, 6W at 70V
Nominal impedance: 16 ohms
Power rating: 200W AES, 400W continuous, 800W peak
Sensitivity: 93 dB (1W/1m)
Maximum SPL: 116 dB SPL peak rating listed in the manual
Frequency response: 160Hz–20,000Hz
Horizontal dispersion: 120°
Vertical dispersion: 10°
Unit dimensions: 758mm x 100mm x 150mm

APT-P6

System type: 2-way coaxial pendant loudspeaker
Driver: 6.5-inch Celestion coaxial driver with 1.5-inch LF voice coil and 1-inch HF voice coil
Power options: 60W, 30W, 15W at 100V; 60W, 30W, 15W, 7.5W at 70V
Nominal impedance: 8 ohms
Power rating: 120W AES, 240W continuous, 480W peak
Sensitivity: 90 dB (1W/1m)
Maximum SPL: 110 dB SPL, 116 dB SPL peak
Frequency response: 70Hz–20kHz
Dispersion: 120°
Outer diameter: 308mm
Max depth: 305mm

APT-W8S

System type: surface mount subwoofer
Driver: 8-inch HH-designed low-frequency driver
Power options: 100W, 50W, 25W, 13W at 100V; 100W, 50W, 25W, 13W, 6W at 70V
Nominal impedance: 8 ohms
Power rating: 100W AES, 200W continuous, 400W peak
Sensitivity: 89 dB (1W/1m)
Maximum SPL: 109 dB SPL, 115 dB SPL peak
Frequency response: 40Hz–200Hz
Dimensions with feet: 327mm x 520mm x 175mm
Dimensions without feet: 320mm x 520mm x 168mm
Wall clearance with bracket: 10mm

Detailed Description

The Aptur Range Coaxial Ceiling Loudspeaker line is designed to deliver even coverage with a low-profile visual footprint. The ceiling models use coaxial drivers so high and low frequencies originate from the same acoustic point, which helps keep speech and music coherent across the room. The APT-C4 and APT-C6 add custom horn shaping around the driver to further smooth coverage and improve balance.

The range also includes the APT-C8S ceiling subwoofer and APT-W8S surface-mount subwoofer, which extend the low end for fuller background music playback. The column models, APT-CL63 and APT-CL103, focus on directivity and speech intelligibility with slim cabinets and wall brackets that support downward aiming. The pendant model, APT-P6, is intended for spaces with high ceilings or locations where ceiling cavity mounting is not practical.

Across the range, the common connection method is a 4-pin Euroblock terminal for input and link-out wiring. The products also support multi-tap transformer operation for 70V and 100V distributed audio systems, while 8-ohm low-impedance operation is available where specified. The main design goal of the Aptur Range Coaxial Ceiling Loudspeaker family is simple integration without sacrificing clarity or coverage.

Safety

Power should be switched off before installation or wiring work begins, and the amplifier should be turned on last after all sources and processors are already active. This helps reduce switch-on transients that could damage loudspeakers.

Use only properly rated speaker cable and avoid microphone or shielded cable for speaker connections. The manual also warns against exposing the products to rain, liquids, or excess moisture, and advises cleaning only with a dry cloth.

Install each unit only where the supporting structure can safely carry the load. For suspended or surface-mounted installation, use the supplied hardware and approved mounting points, keep polarity consistent across multiple speakers, and follow safe lifting practices. High sound levels can cause hearing damage, so hearing protection should be used when exposure is loud or prolonged.

Do not block ventilation openings, place the units near heat sources, or attempt user servicing. If a product is damaged, behaves abnormally, or has been exposed to moisture, service should be handled by qualified personnel.

Setup and Operation

APT-C installation

Confirm the ceiling structure can support the speaker.
Mark and cut the ceiling opening using the supplied cutout guide.
If needed, fit the tile bridge so the speaker can sit securely in a suspended ceiling.
Wire the 4-pin Euroblock connector with the correct positive and negative input and link-out pins.
Choose the dog-leg orientation that matches ceiling thickness.
Attach the dog-legs, connect the safety tether, insert the wired connector, and seat the speaker in the opening.
Tighten the mounting screws so the dog-legs grip the back side of the ceiling or tile bridge.
Set the transformer tap with the rotary switch, or select 8 ohms for low-impedance use where supported.
Snap on the magnetic grille and test playback.

In the Aptur Range Coaxial Ceiling Loudspeaker ceiling models, the rotary tap switch is the key operating control. It lets installers match the speaker to a distributed line system or bypass the transformer for low-impedance systems.

APT-P6 installation

Verify the ceiling structure can carry the pendant speaker safely.
Use the supplied steel cables, cut them to length, and secure them around approved suspension points.
Crimp the cable ends and connect the carabiners.
Remove the magnetic rear cover and cable insert.
Attach the carabiners to the rear suspension points on the speaker.
Wire the Euroblock connector and plug it into the speaker.
Replace the rear cover and cable insert to conceal the rear hardware.
Set the transformer tap or 8-ohm mode with the rotary switch.
Fit the magnetic grille and confirm operation with a test signal.

The pendant model is especially useful when a ceiling speaker cannot be recessed, while still keeping the same distributed-audio flexibility as the rest of the series.

APT-CL installation

Choose a wall location with enough structural strength and suitable coverage for listeners.
Use the bracket as a drilling template, then fix the bracket to the wall with appropriate anchors and screws.
Wire the Euroblock connector and select the correct transformer setting.
Hang the speaker on the bracket using the eyelets and fixed mounting point.
Set the downward tilt with the pin-and-slot adjustment system.
Play audio to verify correct operation.

APT-W8S installation

Confirm the mounting surface can support the subwoofer.
Use the bracket as a template, drill fixing points, and install anchors if needed.
Secure the hook bracket to the wall.
Hang the subwoofer so the rear slot aligns with the hook bracket.
Wire the Euroblock connector and choose the appropriate transformer tap if used on a line system.
Test the speaker after installation.

Pros & Cons

Pros: The Aptur Range Coaxial Ceiling Loudspeaker series offers clean integration, balanced coaxial sound, and flexible 70V/100V or low-impedance operation.
Pros: The line covers ceiling, pendant, column, and subwoofer formats, making it easier to match different room layouts with consistent voicing.
Pros: Installation hardware is well thought out, with magnetic grilles, safety tether points, Euroblock wiring, and tilting or suspension options.
Cons: Several models require careful structural planning and accurate mounting, especially in suspended ceilings or flown installations.
Cons: The series is installation-focused, so it is less suited to portable or plug-and-play use.

PDF

Faqs

How do I install an Aptur C-series coaxial ceiling loudspeaker safely?

Start by switching off the amplifier or audio source before any work begins. Confirm the ceiling structure can support the loudspeaker, then use the supplied cutout template to mark and cut the hole. If the speaker is going into a ceiling tile grid, fit the tile bridge first. Connect the wiring to the 4-pin Euroblock, make sure the dog-leg mounts match the ceiling thickness, attach the safety tether, and then secure the speaker in place. Finish by fitting the grille and testing the audio.

What do the Euroblock terminals on the Aptur ceiling speaker do?

The Aptur ceiling speakers use a 4-pin Euroblock connector for wiring and looping through to other speakers. Pin 1 is positive input, Pin 2 is positive link out, Pin 3 is negative input, and Pin 4 is negative link out. Strip the cable ends cleanly, insert them into the connector, and tighten the screws firmly. Keeping polarity consistent is important, especially in multi-speaker systems, because reversed wiring can cause weak bass, poor stereo image, or uneven coverage.

How do I choose between 70V, 100V, and 8-ohm operation on the Aptur range?

Use the rotary transformer switch on the front of the speaker to match your amplifier type and system design. For 70V or 100V line systems, select one of the available wattage taps shown on the speaker or in the specification table. For Lo-Z systems, choose 8 ohms to bypass the transformer. This matters because the wrong setting can overload the amplifier, reduce output, or make the system sound unbalanced when multiple speakers are connected.

Why does the Aptur ceiling speaker include a safety tether, and how should it be used?

The safety tether is an extra retention point that helps prevent the speaker from falling if the main mounting hardware loosens. It should be secured from the speaker’s eyelet to a fixed anchor point above the ceiling before the unit is fully seated. This is especially important in suspended ceilings or other installations where the speaker is overhead. The tether is not a substitute for proper mounting, but it adds an important layer of protection during long-term use.

How do I set up the reversible dog-leg mounts on an Aptur in-ceiling speaker?

The reversible dog-leg mounts are designed to fit different ceiling thicknesses more securely. First choose the mount orientation that matches your ceiling tile or plasterboard depth. Attach the mounts to the speaker using the supplied screws, then insert the speaker into the cutout. Tighten the screws so the legs swing out behind the ceiling surface or tile bridge and grip it firmly. Using the correct orientation helps the speaker sit flush and stay stable over time.

What should I check if an Aptur ceiling loudspeaker does not play after installation?

First confirm the amplifier is turned on and the speaker output is active. Check that the Euroblock connector is fully seated and that the positive and negative wires are matched correctly. Make sure the transformer tap is set correctly for the system, since an incorrect 70V, 100V, or 8-ohm setting can stop the speaker from working properly. Also verify the amplifier level is not muted or set too low before testing again with audio playback.

Can I link multiple Aptur loudspeakers together in one system?

Yes, the Aptur range supports parallel wiring in 70V and 100V line systems, which makes it easier to connect multiple speakers across a larger space. Use the link-out terminals to continue the circuit to the next loudspeaker and keep polarity consistent on every unit. Make sure the cable is rated for the working current and that the amplifier can handle the total load. Each speaker should also be set to the correct transformer tap for even coverage and reliable performance.

What maintenance and safety steps should I follow for Aptur speakers after installation?

Keep the speaker clean with a dry cloth only, and avoid exposing it to moisture or rain unless the model is specifically rated for that environment. Do not block ventilation openings or place the speaker near heat sources. Before turning the system on, always power up source equipment first and the amplifier last to avoid damaging transients. If the unit is damaged, dropped, or develops a fault, it should be inspected by qualified service personnel rather than opened or repaired by the user.