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AR fusing and Bi-amping Information


Guest iceman

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I just recently found this forum and I am greatly impressed with the wealth of information that is available. Thanks to everyone who contributes. I have just been going through my old AR files and have found some factory correspondences from AR regarding fusing AR3a and other models, as well as bi-amping AR9s. Is there a place to post these items if anyone is interested?

The fusing information I found very valuable. I had blown out the mid-range drivers on my AR3a on two separate occasions, and they were replaced under warranty by the factory. They sent me the fusing information, and after installing the fuses, I have never had another problem, although I have blown the fuses a few times. I also have my AR9s fused as well. Thanks for all the information.

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Guest dogmeninreno

>How did you fuse the AR9s?

>

> Barry

>

>

Barry, I used a single Bussman FNM 2 fuse (1 per speaker) as shown in the AR9 owners manual page 23. It is availanle on this forum under classic speakers. I am bi-amping now so I havn't a clue what should be used in that configuration. Dale in Reno.....

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  • 2 years later...
Guest David in MA

>Barry, I used a single Bussman FNM 2 fuse (1 per speaker) as

>shown in the AR9 owners manual page 23. It is availanle on

>this forum under classic speakers. I am bi-amping now so I

>havn't a clue what should be used in that configuration. Dale

>in Reno.....

Dale or anyone else...

Where can I find this fuse? Does it have to be this particular fuse or can it be any dual-element 2 amp fuse?

Thanks.

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>>Barry, I used a single Bussman FNM 2 fuse (1 per speaker)

>as

>>shown in the AR9 owners manual page 23. It is availanle on

>>this forum under classic speakers. I am bi-amping now so I

>>havn't a clue what should be used in that configuration.

>Dale

>>in Reno.....

>

>Dale or anyone else...

>

>Where can I find this fuse? Does it have to be this

>particular fuse or can it be any dual-element 2 amp fuse?

>

>Thanks.

Hi David;

AR and Advent had both recommended, FNM Bussmann slow blow fuses in an open style fuseholder.

They are a dual element type fuse, you really have to see a manufacturers selection to see the differences.

Do not just try substitutions.

These are NOT an equivalent to the more common 1/4" x 1 1/4" glass cased slow blow fuses.

A little difficult to find in the smaller values and expensive (perhaps $5.00 each).

Obviously if you live in a major city, such as maybe New York or Chicago, there probably is more hobby shops, or ham radio shops just for ideas as to where to shop for them.

Do a google on Bussmann, peruse their catalog at their website, also Littlefuse FLM slow blow at their website.

There is a lot of different type fuses, for many different purposes.

I read somewhere recently at ava.com, that some English KEF speakers used a factory installed fuseholder.

You can imagine trying to find a replacement fuse in North America.

There is at least one source of supply that should google as well.

I may be wrong, but, Digikey or Mouser, just to suggest 2 possible sources.

Maybe someone else can suggest other choices and prices.

Good luck.

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>Fuseholders are available from Mouser Electronics and Steven

>Engineering in San Franciso. The 4421 has to be back ordered,

>but they have a screw type 4515 which fills the bill without

>soldering. Cost is $4-$5. FNM-2 fuse are available at Lowe's

>---$3.57

Thank you for this valuable information.

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