More excellent reviews of our midrange domes, this time via the German Hobby Hifi magazine.
Read all about it here…..if you’ve kept up with your German that is!
For all those not speaking German, then the summary roughly translated is:
VM527 – is an excellent midrange dome, which is relatively expensive,
But the money is always worth it.
Perfectly balanced and linear, no membrane resonance.
Extremely fast and completely even decay.
Smooth impedance curve without resonance artifacts.
Lightning transient behaviour.
Harmonic Distortion K2, K3 and K5 over signal level at 700 Hz From the small signal range to the highest volume outstanding.
VM753AOS – The VM753AOS lends itself to the field of 600 to 4,000 hertz. The linearity is perfect here too, the distortion are from the smallest to the maximum Level also excellent.
Ideally balanced and linear, sharp tear-off edge at 5 kHz.
An outstanding good 75 mm dome midrange
He is worth every one of his many euros.
Harmonic factor K2, K3 and K5 above signal level at 600 Hz From the small signal range to the largest volume outstanding.
Many thanks to Hobby Hifi and Axel Oberhage.
Earlier this month Volt’s Steve and Nick went to Munich for a trip to the High End Hifi Show where, like many other hifi enthusiasts, they immersed themselves in a world of high end audio.
The vast show encompasses mainly loudspeakers, turntables, amplifiers and cables spanning the luxurious to the exotic to the the seemingly quite insane but most importantly provides an opportunity for actually listening to many new products which was a real treat.
Some of our British customers were unveiling some beautiful and impressive new designs at the show, a true testimony to the British Audio Industry and something we feel proud to be a part of.
It’s been many years since our Radials have been reviewed by an industry expert so we were thrilled when Voice Coil’s editor Vance Dickason ask to review one of our flagship products the 12″ RV3143.
After carrying out extensive tests Vance concluded that,
“I am certainly impressed with Volt’s Radial Technology, as it solves the problem of power compression that is exacerbated by the build up of heat in an enclosure, especially in pro sound PA and studio monitor applications. Regardless, the Volt RV3143 is a well-engineered woofer with some really unique features.”
To read the review in full click the link.
Hot on heels of Augusts review of its 2″ counterpart, the VM753 (3″ midrange dome) found itself on Vance Dickason’s test bench. The Editor of Voice Coil Magazine has been been a professional in the loudspeaker industry since 1974 and his reputation precedes him. We were excited to see what tests he would carry out, the subsequent results and of course – the overall verdict.
He concluded, ‘Like the 2″ VM527, the VM752 is an impressive device with good performance and excellent build quality.’
Read the full review by following the link below and for more information on the VM752 please contact us.
At the end of the summer we contacted by the highly respected Vance Dickason, editor of Voicecoil Magazine, who wanted to review our newest product: the VM527 (2″ midrange dome) .
Dickason put the unit through its paces and has published a wealth of results which are available to read in the review linked below. He concluded that, ‘This (VM527) is an impressive device with excellent build quality. It is obviously a worthy companion to the Volt Loudspeakers VM752 3″ midrange dome.’
For more information about this product please contact us or read the review in full here.
We are excited to announce the release of the VM527, a 2″ (52cm) soft midrange dome unit. Following a demand for a smaller version of the greatly respected VM752, the 3″ midrange dome that has been in production here since 1999.
Through an intensive design phase we have made every effort to ensure that this smaller midrange dome maintains the same quality and performance of its larger predecessor – more information; including technical specifications and photos can be found here on our website: VM527 – 2″ midrange dome
What’s more… in our first ever online competition, we are giving you a chance to win a pair! All you need to do is ‘like’ our Facebook competition post, share our Facebook Page and let us know why you’d like a pair. The winner will be selected at the end of May.
From a production perspective, the VM752, our 3″ Soft Midrange Dome is arguably our most complex unit. Perhaps this explains why there’s less than a handful of manufacturers that still produce these drivers in the UK today.
The initial assembly of the unit isn’t anything unusual but the dome itself is covered in layers of specific coatings and it’s these critical layers that can change the sound of the unit if not applied accurately. It’s a delicate process that takes years to master. The coatings must first be correctly mixed, then each layer is applied to the unit by a skilled technician using a turntable and fine brush in order to give even and consistent coverage. Once on the dome, the coatings cannot be altered so it’s vital to get it right first time.
This month has seen a huge order of VM752’s leave our doors bound for the Far East, pictured here are the mid range domes after final assembly, complete and ready for packing.
Volt are proud to have supplied the VM752 to some of our most respected OEM customers and has been used by DIY enthusiasts for many years.
To discuss any possible requirements you may have please contact Steve on 01308 898763.
Not Your Average Inductor: The Original BBC Design Transformer Style 7 tap L3 manufactured exclusively for Falcon Acoustics.
For many years we’ve supplied a huge variety of air-core, e-core and ferrite chokes to many OEM’s to suit the requirements of their crossovers. However, after an initial discussion with Jerry Bloomfield of Falcon Acoustics we realised that what he was looking for was going to be be a first for Volt Loudspeakers.
Falcon Acoustics are well known and respected for their faithful reproduction of the BBC LS3/5A monitors. Which, as well as the B110 driver, T27 Tweeter, include the FL6/23 crossover that feature the transformer style 7 tap L3 inductor. We were struck by the meticulous detail that Jerry and Malcolm Jones had gone to to reproduce the LS3/5A to it’s demanding BBC specification not only in terms of sound but also in appearance and choice of materials. Consequently using a more modern and simplistic inductor was simply not an option for the Falcon design team.
Jerry approached us as he believed we could solve quality control issues and manufacture this inductor consistently. All Volt inductors are wound to tight tolerances but we had not produced one with 7 taps. Each tap, incidentally, has different values that must be within a tolerance of +/-5 %.
Working out how such an inductor could be built wasn’t challenging, however developing a method that guaranteed the consistency required throughout a large production run was going to be tricky. The main barrier was that these transformer style inductors are clamped together after they have been wound and so an amount of pressure is applied to the core. The amount of pressure means that the values of each, some or all of the taps changes, subsequently throwing the inductor out of tolerance. One could play around with the tightness of the clamp for each individual piece but this is simply not practical or cost effective for a large production run.
Firstly Steve and David realised that an existing machine needed to be modified to cope with the number of taps and then spent time designing a bespoke piece of tooling that allowed a consistent amount to pressure to be applied to a number of inductors at anyone one time. After a period of development, they were satisfied that these BBC Design transformer style 7 tap L3’s were consistently within tolerance and would meet the high quality standards of the Falcon Design Team.
Volt manufacture the BBC Designed transformer style 7 tap L3 inductor exclusively for Falcon Acoustics. It has certainly broadened our knowledge of how to manufacture inductors that are of a more complex design. For further information about the product or indeed the Falcon LS3/5A please visit their website that contains a wealth of information about the product’s rich heritage and how to purchase a pair.
We’d like to thank our long standing friends MA Akustica for sharing these photos with us. Custom install projects for recording studios in Lithuania using Volt products from both our standard and Radial lines.
Click the link for more information about MA Akustica:
For more information on the Volt drivers used in these custom installations, please follow the links below or contact us via the website.
Manor Farm, High Street
Burton Bradstock, Dorset,
T: 01308 898 763
F: 01308 898 593