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AN-E modified crossover

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Posted on September 16, 2009 at 13:09:20
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009



I've bought a pair of used AN-E/D (2001) speakers with offboard crossovers. In one of the offboard crossovers, one component was lose: 3W100ΩJ (a little white one). In the other, one point of the same component was lose.

I know very little about electronics. One component went lose in both of them during transport: the little white 3W100ΩJ. The question is: should it be installed parallel with the blue component? If it is similar to the AN-E kit, it IS parallel!
RE: AN-E modified crossover, posted on September 22, 2009 at 23:29:44
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009
 Well, that's the only good thing about the modified crossovers: They are external!

RE: AN-E modified crossover, posted on September 16, 2009 at 13:15:44
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009



Here is the diagram of the original AN-E crossover!

RE: AN-E modified crossover, posted on September 16, 2009 at 13:24:53
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009



In a German hifi magazine we find following information on the AN-E crossovers!

RE: AN-E modified crossover, posted on September 18, 2009 at 19:57:21
scarebus
Audiophile

Posts: 164
Location: San Jose, California
Joined: January 10, 2004
 The two 3W100ohm resistors should be parallel.

RE: AN-E modified crossover, posted on September 19, 2009 at 00:37:24
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009
 Thanks, Scarebus! Actually, I already did that - through telephone guidance of a hifi friend! I showed the crossovers to the Audio Note dealer i Copenhagen (Denmark), and he wasn't impressed by this modification. So, maybe I'll send the speakers til Peter Q. in order to have them rematched.

RE: AN-E modified crossover, posted on September 18, 2009 at 20:36:38
scarebus
Audiophile

Posts: 164
Location: San Jose, California
Joined: January 10, 2004
 May I ask you where or from whom you bought this X-overs? Looking at the photos, 1st of all, the parts are NOT Audio Note factory supplied unless the previous owner modified. Secondly I don't see a variable resistor in the HF side.

RE: AN-E modified crossover, posted on September 19, 2009 at 02:56:44
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009
 I bought the AN-E/Ds on ebay.co.uk (from Adam Slim). The new crossovers, where only the chokes are original, was modified by the first owner, not the seller. Qvotrup recommended me to send them to the AN headquarters in UK. He would probably change components og rematch drivers and crossovers. I know very little about electronics: the white resistor (100 Ohms) is not variable, I think. I showed one of the crossovers to the owner of the AN store Audio Consult/Copenhagen, Anders Espensen. (There were two other "experts" looking!). He made some measurements, and thought some of them were really weird compared with the standard values. He recommended that a remove two resistors which I did when I got home, but the speakers sounded much worse, and I soldered them back on again! They also had some critism on the cables and cable connectors (too much resistance).

RE: AN-E modified crossover, posted on September 19, 2009 at 09:05:49
AstroSonic
Audiophile

Posts: 814
Location: SE Pennsylvania
Joined: January 25, 2003
 Parts values, types (materials and construction), brands, wire and connection quality all make a substantial contribution to the sound. The various AN-E models have different drivers and crossovers. The crossover schematics posted above may not be designed for your speakers. While you may find the sound acceptable, what you are hearing is likely significantly different from that of the Audio Note speakers you thought you purchased. If your intention was to buy a pair of Audio Note AN-E/D loudspeakers then you need stock (or updated) crossovers and wiring. They really are that important.

Regards,

Bob
RE: AN-E modified crossover, posted on September 19, 2009 at 11:58:27
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009
 Does anybody have e diagram of the AN-E/D (2001) crossover?

RE: AN-E modified crossover, posted on September 21, 2009 at 09:40:17
scarebus
Audiophile

Posts: 164
Location: San Jose, California
Joined: January 10, 2004
 The diagram you posted on Sept 16 is correct, but not all AN-E/D speakers have exactly the same capacitor values because every speaker is matched according to its speaker resistance, etc. Therefore if you are rebuilding the X-overs you have to match the capacitors until you get the best sound. Its not that simple.

RE: AN-E modified crossover, posted on September 22, 2009 at 00:28:46
Gisli
Audiophile

Posts: 14
Location: Hornbæk
Joined: September 16, 2009
 Thanks scarebus. This is exactly what Qvortrup said: Only AN UK can do the rematch between drivers and crossovers properly!

Are there any examples that people have matched the capacitors themselves with a good result?
RE: AN-E modified crossover, posted on September 22, 2009 at 16:21:03
scarebus
Audiophile

Posts: 164
Location: San Jose, California
Joined: January 10, 2004
 One can experiment installing different cap values, but at the same time it will be much easier if he is working with external X-overs. That way he doesn't have to dismantle speakers each time he changes caps on the internal x-overs.

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