the midrange frequencies. Sitting above these drivers is a 25mm soft-dome tweeter with neodymium magnet.
Their enclosure stands 970mm tall, 205mm wide and 350mm deep. The bass reflex port is at the rear and they are provided with foam bungs in case you wish to tweak the way the bass is delivered. Also provided are spikes. Richter rates their frequency response at 32 to 25,000Hz, sensitivity at 90dB, and recommends amplifiers rated up to 250W. The Wizards (and also the Merlins) adopt a gentle wedge shape, very slightly wider at the front than at the back.
Both these and the centre-channel Griffin speaker are rated at four ohms impedance. You should ensure that your AV receiver is rated to handle low-impedance loudspeakers, and you may be required to make a specific setting for four-ohm speakers. Receivers from at least one major brand (Yamaha) will be, at least according to the company’s paperwork, not suitable for use with this system because they at best support 4-ohm loudspeakers only on the left and right front channels.
The Griffin centre sports two 105mm midrange drivers, one either side of the same kind of tweeter used in the Wizards. This enclosure looks mid-sized from the front, measuring 495mm wide by 165mm tall, but it’s quite deep at 385mm. It has two bass reflex ports at the rear, so care should be taken to make sure it can breathe. Otherwise, set the crossover to the subwoofer in your receiver to at least 80Hz so that there’s little output at the intended port resonance. Richter specifies its frequency response at 48 to 25,000Hz, sensitivity at 89dB, with an amplifier suitability which ‘depends on the main speakers’.
The Series V Merlin speakers are bookshelf-sized and serve as surround speakers. At 320mm tall, 230mm deep and 180mm wide, these rear-ported bass reflex speakers are quite substantial units. Each has a quarter-inch threaded mounting point at the rear. With a single 105mm mid/bass and the same 25mm tweeter each, these are rated at 55 to 25,000Hz, with a sensitivity of 87dB, amplifier suitability up to 150W, and impedance of six ohms.
All of these speakers are available in black oak or Jarrah finish, and all are fitted four goldplated binding posts, suitable for bi-wiring.
The Thor subwoofer is also a Series V unit. This is a nice big unit featuring a mix of traditional and modern technology. Traditional in that it has generous dimensions of 500 by 440 by 450mm and a solid build indicated by the 28kg of weight, and in the 300mm driver with up to 32mm excursion operating in a twin ported enclosure. There are both line-