Please contact us by email, phone, SMS, or online form and we’ll send you an invoice.

For speakers we have in stock the delivery time is two weeks. For speakers not in stock or custom speakers the delivery time is 3 months. Those times are for Australia only. Additional shipping time will likely apply for customers outside Australia.

Yes, in Australia our prices include GST. For customers outside Australia we do not charge GST, so our prices for you are 10% less, but your country will likely charge import taxes and duty in addition to our prices.

In Australia we ship for free. For customers outside Australia the customer pays freight costs. In that case, please contact us for a quote.

Yes, but stands are optional. They are normally $1200 per pair, potentially more for custom stands.

For Victorians we currently offer 3-day in-home trials for a fully refundable $1k deposit as long as the speakers are returned without damage. For NSW customers we are considering in-home trials in late-April through May 2025. Please contact us if you’re interested.

Much is made of acoustic room treatment being necessary for speakers to sound good, but we have not found that to be the case. We developed the speakers mainly in two rooms—the first was nearly acoustically ideal; the second was reverberant and far from the normally accepted ideal. We don’t consider acoustic treatment to be necessary. However, in a very reverberant room the stronger argument for acoustic treatment is that it makes the room more comfortable overall—nothing to do with how speakers sound.

If you purchase speakers and change your mind, then we offer a refund period of 100 days in Australia for non-custom speakers.

They are passive, meaning that they require an amplifier—there are no internal amplifiers. The batteries bias the capacitors in the crossover, they do not power amplifiers that make sound. The button on the back is for treble boost for those with hearing loss—it is not a power button.

Yes, but then our warranties do not apply. If something goes wrong with speakers outside Australia, then the most sensible way to repair them is to do it locally, which is out of our control. However, we’ll be more than happy to assist repair providers and send parts at OEM prices plus shipping, if necessary.

The batteries should be changed every 4 or 5 years at the end of their shelf life, or longer if you choose to use lithium 9 V batteries. Other than that, very little can wear out. Unlike foam speaker surrounds, which degrade with time, our drivers have rubber surrounds. The electrolytic capacitors, which are used only for the subwoofer part of the crossover, should be inspected by a qualified repair person after 30 years. According to accelerated ageing tests, they should last 30 years at 30 °C and 60 years at 20 °C.

If you use speaker cables with terminations that are not gold plated, then they and the binding posts should be inspected yearly and cleaned, if necessary. For that we recommend DeoxIT D100L and DeoxIT G100L.

Almost certainly not for music. The Celata 88s are -3 dB at 33 Hz, which is comparable to a lot of compact subwoofers. However, the Celata 88 internal subwoofers do have their limitations, so if you use them for home theatre then you might prefer to use separate subwoofers for very low frequency effects in movies that are not generally found in music. Also, although the Celata 88s are capable of very high SPL for HiFi, they are not PA systems. PA system-like levels would require a separate subwoofer. In home theatre or PA system use with separate subwoofers we recommend using a high pass filter on the Celata 88s to prevent the internal subwoofers from exceeding their Xmax. Also, the 300 W peak power limitation is set by the mid-bass, so do not exceed that even with a high pass filter. Doing so will damage the voice coil of the mid-bass, which is considered misuse that is not covered by our warranty. If the phase plug of the mid-bass is hot to the touch, then it’s being driven too hard. Slightly warm is fine.

Depending on music style, probably not in small rooms. It has a shallow bass roll-off of 12 db/octave with and is 3 dB down at 44 Hz in near-field measurements. In room measurements would show a flatter response with plenty of bass in small rooms. In larger rooms at higher listening levels a subwoofer or two might be desirable, with the Aphelia 8s high pass filtered at 60 Hz or higher (12 dB per octave).

Generally, we aim for a flat response except for a shallow dip from 900 to 3000 Hz. Sometimes called a BBC dip, which is common in many HiFi speakers and even some studio monitors, the dip simply sounds better than a flat response. We use a flat response as a starting point and then tuned it through extensive listening tests to come up with the dip characteristics. For the Celata 88, if requested, we can reconfigure the crossover to produce a flat response for those accustomed to flat response speakers, but we don’t recommend it.