Giorgio AR Posted December 11, 2021 Report Share Posted December 11, 2021 I insert a report on the stacking of a pair of AR2 with another AR2a on the correct section; have been in this configuration for some time, but previously they were connected to a very good, old and good sounding Philips RH521 amplifier, 30 x 2 w at 4 ohm The two pairs were used alternately and to the AR2 I had paired on the top a pair of small AR1MS used as medium / high section, using only the woofer of the AR2, with the iterposition of a filter cut at 2000hz or slightly below, I don't remember exactly. I retired the old Philips that was starting to have a noticeable hum and replaced with a more recent Marantz PM78, also equipped with a remote control (an incredible convenience being placed at about 2.15 meters high!), This amp is particular because it works in " class A "(25W x 2 at 8 ohm, a little more at 4 ohm) or in" class AB "(100w x 2 at 8 ohm, but 190w x 2 at 4 ohm!). At this point I decided to remove the small AR1MS, reconnected the double mid / tw of the AR2 and so I listened to the two pairs together (switches A and B speakers of the amplifier both on and as always defeat tones ... there is a special button on the amplifier) ... I entered another world. In both modes: "class A" or "AB" a big change, the impression of the low range was not equal to the sum of the two woofers, but much higher, the remaining mid-high range perfectly integrated and slightly behind, never tiring; same sensation from volumes of tenths of a watt, up to high wattages. I was very satisfied with it, since then the system works with both pairs always connected (every now and then I only listen to the AR2a, among my favorite ARs alternating with listening to the AR2s, they sound the same, clearly the AR2a have the supertweeter that makes them feel more complete) But the magic comes when both pairs play together, why? ... I asked myself the question many times these days ... and finally I gave myself an answer: I have 2 pairs of AR2s with the super tweeter, I think the "magic" is because of him! I am convinced that I have two pairs of AR2s with one AR-ST !! Currently I do not miss a second super tweeter, the set of AR2a and AR2 seems perfect to me, but this one (I want to try) has been in the future for some time as I have all the components including the original canvas, only missing to exactly replicate the cabinet original (here the problem will be: where do I place it, above AR2 inverted or do I have to turn the speaker 180 °? At the moment I enjoy the two pairs like this. A final note for Norman Nicolai: I use three cork disks cut from bottle cork stopper under the stands and AR2a as anti-vibration material, instead a single cork disk of about 15 cm between Ar2a and AR2. in diameter and 1 cm. thick from Ikea very cheap: about 5$ for three pieces! No vibration or danger, I highly recommend this as proof. P.S. the AR18s currently not connected to any amp, with puppets are the head of my AR Totems! Quote Link to comment Share on other sites More sharing options...
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