SX-1250 AND INFINITY KAPPA 7s

[dacapo]

I conducted some cursory checks throughout the threads prior to posting and I could not find an answer, so here goes. (It should be noted that I have very limited knowledge in this area).

I have an SX-1250 receiver hooked up to Kappa 7s that I play very loud. I blew the 7s (tweeters and mids).

Is the 1250 too powerful for the 7s or could it be from age? Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.

I am considering purchasing some new mids and tweeters for the Kappas rather than blow $2-3K on new speakers.

Thanks in advance for any info/advice you can provide.

 

[Haoleb]

Rather than the pioneer being too powerful for the speakers, Maybe you are just playing them beyond their limits. You might also want to do some checks with that 1250 with things such as DC offset because of its age there are likely parts which are in need of replacement. www.audiokarma.org has quite a few 1250 owners and will be of more help for you with the gear you have because this forum isint really dedicated to vintage equipment.

 

[dacapo]

thanks for the advice - -I'll head over there and see what they say

 

[highfigh]

I conducted some cursory checks throughout the threads prior to posting and I could not find an answer, so here goes. (It should be noted that I have very limited knowledge in this area).

I have an SX-1250 receiver hooked up to Kappa 7s that I play very loud. I blew the 7s (tweeters and mids).

Is the 1250 too powerful for the 7s or could it be from age? Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.

I am considering purchasing some new mids and tweeters for the Kappas rather than blow $2-3K on new speakers.

Thanks in advance for any info/advice you can provide.

Not too powerful, you cranked it up and the amplifier clipped, which took out your tweeters and mids. I worked for a Pioneer and Infinity dealer and while they play loud, that receiver's amp isn't exceptionally clean. If you use the loudness and bass/treble controls, don't turn the marker on the volume control past 12:00. Rated output is at about 1:00 with everything set neutral. The speakers aren't new, either and it could be that, too. They were a bit delicate from the power handling standpoint.

Clean your controls and switches. That model is 30 years old and I can guarantee they are dirty.

If you can't find OEM replacements, look into Vifa tweeters. They have some that handle a lot more power than the Infinities and sound great. They should be close to the same diameter, too. The crossover will probably need to be modified, to accommodate the different needs. The mids look very similar to some that are available at Parts Express but what you'll dinf now will have textile domes. Contact Infinity and see if they still have replacement parts.

 

[brendy]

Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.Thanks in advance for any info/advice you can provide.

It may have been the receiver shutting down.Next time do not ignore the warning signs.

 

[highfigh]

It may have been the receiver shutting down.Next time do not ignore the warning signs.

It could be that- I don't remember if that series used relays for speaker switching and protection. The easy way to tell is by turning it on with the volume at minimum and if there's a 2-5 second delay followed by a click, it uses relays and a protection circuit that's smarter than just a fuse. If it was at full volume, that needs to never happen unless the source level is very low. If the volume control pointer was at 3:00, it was too high (past rated output with normal source levels). Past 12:00 with loudness on and bass increased will cause major clipping and possibly DC at the output, which will/should trigger the protection circuit.

If turning it up that high is a regular necessity, a more powerful amp and/or more sensitive speakers are needed.

 

[wire]

I conducted some cursory checks throughout the threads prior to posting and I could not find an answer, so here goes. (It should be noted that I have very limited knowledge in this area).

I have an SX-1250 receiver hooked up to Kappa 7s that I play very loud. I blew the 7s (tweeters and mids).

Is the 1250 too powerful for the 7s or could it be from age? Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.

I am considering purchasing some new mids and tweeters for the Kappas rather than blow $2-3K on new speakers.

Thanks in advance for any info/advice you can provide.

If i remember correctly , the Kappa's are great speaks and couldbe 4ohm speakers , power pigs to boot .
I would say like above , you clipped you Kappa's and blew the top end . I would look for a dedicated power amp for those speaks . Maybe Outlaw , Sunfire or Bryston class of Amp that is that can do 2 or 1 ohm loads .

 

[TLS Guy]

I conducted some cursory checks throughout the threads prior to posting and I could not find an answer, so here goes. (It should be noted that I have very limited knowledge in this area).

I have an SX-1250 receiver hooked up to Kappa 7s that I play very loud. I blew the 7s (tweeters and mids).

Is the 1250 too powerful for the 7s or could it be from age? Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.

I am considering purchasing some new mids and tweeters for the Kappas rather than blow $2-3K on new speakers.



Thanks in advance for any info/advice you can provide.

Once you get it repaired turn it down. The next thing to blow will be your inner ears, and you won't find a good replacement.

 

[wire]

Once you get it repaired turn it down. The next thing to blow will be your inner ears, and you won't find a good replacement.

TLS
These speaks run the Emit tweets ( much different than anything you can buy today , closer to Ribbon tweets http://www.bobbyshred.com/emit.html ) , there very clear and makes the speakers power pigs . With some good higher end power these speaks are great .

 

[wire]

I conducted some cursory checks throughout the threads prior to posting and I could not find an answer, so here goes. (It should be noted that I have very limited knowledge in this area).

I have an SX-1250 receiver hooked up to Kappa 7s that I play very loud. I blew the 7s (tweeters and mids).

Is the 1250 too powerful for the 7s or could it be from age? Prior to them blowing, the speakers intermittently shut themselves down, as if in overload capacity.

I am considering purchasing some new mids and tweeters for the Kappas rather than blow $2-3K on new speakers.

Thanks in advance for any info/advice you can provide.

Here is some for cheap , you can use the upper end . http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1232851092&/Infinity-Kappa-7-emit-tweeters