Aeroflex - 2.5-way floorstander

Three drivers. One inside.

A tower 158 mm wide, rated to 38 Hz.

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Aeroflex

38 Hz, rated low-frequency limitSide section, in proportion. A splitter panel forms a long tapered duct against the rear wall, doubling as bracing; the mouth sits where each cabinet has it. As reviewers describe it; not a factory drawing.

The channel is part of the structure, so a slim tower stays a stiff one.

The Mambo 2 gets its cone area from three 115 mm drivers, one of them hidden inside, and its extension from an Aeroflex channel integrated into the cabinet. Building the port as structure stiffens the panels of a tower that is only 158 mm wide, so the bass is deep for the size and stays tight; HiFi Pig's word was "uber tight, with none of that bass port one-notedness."
Loading
Aeroflex, integrated into the cabinet structure so it stiffens the panels
Why it is slim
Three 115 mm drivers, one of them hidden, give a 158 mm tower the cone area of a wider one
Drivers
27 mm Sonolex-coated dome; two 115 mm coated paper mid/bass; one hidden 115 mm bass
Cabinet
893 x 158 x 191 mm, real wood veneer, magnetic grilles
Weight
10 kg each

On record The bass performance is uber tight with none of that bass port one-notedness that you can get with some ported loudspeakers.Stuart Smith, HiFi Pig, March 2022.

Designed, built and voiced by Gareth James - Wirral, England

The figures

Three numbers, and what each one is for.

3bass drivers

Two 115 mm units on the baffle and a third hidden inside, so a 158 mm wide tower has the cone area of a much wider one.

38Hz, rated

Deep enough for most rooms, from a cabinet 893 mm tall and 10 kg; the Aeroflex channel is where the extension comes from.

87dB, 4 ohms

An easy partner for a 40 to 160 W amplifier, in a small room or a large one.

Technical specifications
Type2.5-way floorstander, Aeroflex bass loading
Bass/mid driversTwo 115 mm coated paper cones on the baffle plus a third 115 mm bass driver, hidden
Tweeter27 mm Sonolex-coated fabric dome, neodymium motor
Frequency response38 Hz - 25 kHz (-3 dB, manufacturer)
Sensitivity87 dB (2.83 V)
Impedance4 ohms nominal
Recommended power40 - 160 W
Dimensions (H x W x D)893 x 158 x 191 mm; plinth 218 x 239 mm
Weight10 kg each
FinishOak or walnut real wood veneer, magnetic grilles
What does 2.5-way mean here?
Two 115 mm drivers on the baffle share the midrange and bass, and a third 115 mm driver hidden inside adds bass only. It gives a 158 mm wide tower the cone area of a wider one without a wide baffle.
Will the Mambo 2 suit a smaller room?
Yes. It is slim, its bass is controlled by the Aeroflex loading, not boosted, and it is easy to drive.
What amplifier does it need?
Ophidian recommends 40 to 160 W. At 87 dB and 4 ohms it is a flexible partner.
About the Ophidian Mambo 2 Floorstanding Speakers

Ophidian Mambo 2: three small drivers behind one narrow front, so the bass has depth and the room keeps its floor

The Mambo 2 is a 2.5-way floorstander 893 mm tall and 158 mm wide. Two 115 mm coated-paper drivers on the baffle share the midrange and bass, and a third 115 mm bass driver hidden inside adds low end only, so a slim tower has the cone area of a wider one. The Aeroflex channel is built into the cabinet structure, which stiffens the panels of a narrow box and gives it a rated low-frequency limit of 38 Hz.

What is inside

A 27 mm Sonolex-coated fabric dome on a neodymium motor handles the top, with the same tweeter fitted to the Mojo 2. Magnetic grilles come off without tools. At 10 kg each it goes where a floorstander usually cannot.

Where it lives

Small rooms and modern ones. Ophidian recommends 40 to 160 W; at 87 dB and 4 ohms it is a flexible partner.

On record

HiFi Pig, March 2022: "The bass performance is uber tight with none of that bass port one-notedness that you can get with some ported loudspeakers."

Designed, built and voiced by Gareth James, the founder of Ophidian Audio, on the Wirral, England. Ophidian has made loudspeakers since 2011.

Frequently asked questions

What does 2.5-way mean here?

Two 115 mm drivers on the baffle share midrange and bass, and a hidden third 115 mm driver adds bass only, so a 158 mm tower has the cone area of a wider one.

Will the Mambo 2 suit a smaller room?

Yes. It is slim, its bass is controlled by the Aeroflex loading, and it is easy to drive.

What amplifier does it need?

Ophidian recommends 40 to 160 W.

Ophidian Mambo 2 technical specifications

Type 2.5-way floorstander, Aeroflex bass loading
Bass/mid drivers 2 x 115 mm coated paper on the baffle + 1 hidden 115 mm bass driver
Tweeter 27 mm Sonolex-coated fabric dome, neodymium motor
Frequency response 38 Hz - 25 kHz (-3 dB, manufacturer)
Sensitivity 87 dB (2.83 V)
Impedance 4 ohms nominal
Recommended power 40 - 160 W
Dimensions (H x W x D) 893 x 158 x 191 mm; plinth 218 x 239 mm
Weight 10 kg each
Finish Oak or walnut real wood veneer, magnetic grilles
Made in England, by Ophidian Audio