Item: Pair of Mike Speltz Zero Autoformers - Cherry Finishing + 2 x 1m pure copper cables Location: Inner Sydney Price: 900 + postage and PayPal (have original boxes + manual) Item Condition: 9/10 Reason for selling: not needed anymore Payment Method: Pickup - Cash, Paypal, COD Only Extra Info:
WHAT DO THESE DO?
These are little magic devices that sit between the power amp and the speaker. Their job is to multiply the impedance of the speaker by a factor of choice. So a 4 ohm speaker will become either a 6ohm, an 8ohm or a 16 ohm.
They come with high gauge pure copper jumpers designed by Paul Speltz (the "Anti Cables")
WHY WOULD I NEED THE AUTOFORMERS?
As a result of the increased speaker impedance, the load on the amplifier decreases (in terms of current required), and the damping factor increases. The result is that sound has less distortion, it becomes more crispy and defined (which increases the sense of soundstage) and, most importantly, bass is significantly tightened. These are perfect for you if:
- you feel you bass is a little loose
- you want to improve the overall separation of instruments and definition
- you run speakers with medium to difficult loads (such as Panels, or any 4 to 8 ohm speakers really) - Bill McLeans recommended these to me when I called him asking for ways to get more punch out of my Maggies. He said he had tried them with all speakers and amps he has in demo and the results were amazing.
- you use a tube amp (but will also work effectively with SS)
WHAT TYPE OF AMPLIFIER DO THESE GO WITH?
Any amplifier. They were designed to allow low power OTL tube amps to drive difficult load speakers, but are successfully used with powerful solid state amps as well including massive Krells or Pass Labs. So the classic example would be someone driving Panels with a tube amp. However I have used them with a high current SS amplifier and have noticed massive sound improvements on my maggies.
WHAT IS THE RECOMMENDED RETAIL COST?
McLeans in Australia sells these for $1,799 per pair.
HOW LARGE ARE THEY?
Small enough to disappear behind your speakers if you wish so.
14 x 19 x 10 cm (W L H)
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