Kt150

[Priaptor]

Originally Posted by ariess

Do you leave the cover off for sonic reasons? Appearance?

I just like seeing my tubes lit up. I am not crazy about a cage to begin with but have it around should my dogs ever get close. Nothing to do with sonics.

[TMcD]

Originally Posted by cmalak

I am bummed that the KT-150 was a no go in my Ref 110s according to Kalvin via e-mail. I am going to call and speak to him in person. My guess is they just haven't tried them in the Ref 110 since it's not a current production amp and they don't want to bother finding out but if I can get them to test it out for me, I would much prefer to retube with the KT-150s than the KT-120s. Initial response though is not encouraging

I believe the KT-150s draw more current. I suspect that is the issue.

[nonesup]

Originally Posted by cmalak

I am bummed that the KT-150 was a no go in my Ref 110s according to Kalvin via e-mail. I am going to call and speak to him in person. My guess is they just haven't tried them in the Ref 110 since it's not a current production amp and they don't want to bother finding out but if I can get them to test it out for me, I would much prefer to retube with the KT-150s than the KT-120s. Initial response though is not encouraging

Hi Cmalak. If talking on the phone with Kalvin, please also ask for KT150 in Ref 150. I Bi Amp my B & W 802D with Ref 110 + Ref 150 , and I'm very interested in both retubed with KT150.
Regards

[bsandovalb]

I heard some days ago a ref150 with the kt150, sounded great and the amp stays super cool... It had around 55 hrs with the new tubes working fine

[Harlequin]

Originally Posted by bsandovalb

I heard some days ago a ref150 with the kt150, sounded great and the amp stays super cool... It had around 55 hrs with the new tubes working fine

bsandovalb, Do you know whether the owner of said Ref150 had sought/obtained official sanction for this, either from ARC Central or an ARC authorised dealer ?

Your going well in the Jules Rimet Trophy BTW

[Number95]

Originally Posted by Harlequin

bsandovalb, Do you know whether the owner of said Ref150 had sought/obtained official sanction for this, either from ARC Central or an ARC authorised dealer ?

Your going well in the Jules Rimet Trophy BTW

It is called FIFA World Cup Trophy since 1974

[nonesup]

Originally Posted by bsandovalb

I heard some days ago a ref150 with the kt150, sounded great and the amp stays super cool... It had around 55 hrs with the new tubes working fine

I sent aquestion to Audio Researchon using KT150 and this is his response:

One user has filled in a contact request from the website Audio Research
It follows below the summary of the data filled by the user:
Name: FRANCISCO
Surname: CANO SANCHEZ
E-Mail: fcano@cofaran.es
Message:
Hi. I own AR Ref 110 and AR Ref 150 (Bi Amp, B & W 802D). I wonder if I can use the new Tungsol KT150 in my two amp, and if so, how to adjust the Bias

Hello Francisco,

The KT150 has not been approved for use in the Ref 150.


Best Regards,

Kalvin Dahl
Customer Support Manager
New direct phone line: 763-270-1233 to Call or Fax
3900 Annapolis Lane North
Plymouth, Minnesota USA 55447-5447
www.audioresearch.com
service@audioresearch.com

[2fastdriving]

Hmm. Lot of conflicting information flying around.

[MPS]

I think it's pretty clear. Use only approved tubes, those which your equipment has been designed to operate with, anything else is unnecessary and risky.
Some user(s) has mentioned his amplifier running cool with KT150 - this is not normal - if anything amplifier should be running warmer due to higher heater current (maybe bias is way of or something similar).
ARC will tell if KT120/KT150 is acceptable or not. They might not be very interested to clear status for out of manufacturing (obsolete) models but that depends on their level of customer service and sustainability.

[bsandovalb]

Originally Posted by Harlequin

bsandovalb, Do you know whether the owner of said Ref150 had sought/obtained official sanction for this, either from ARC Central or an ARC authorised dealer ? Your going well in the Jules Rimet Trophy BTW

Hi harlequin!, in fact, the owner is the local ARC dealer, he also put kt150 on two ref75 owners.... Both also very happy!