Help identifying Package Type of Fuse for cabinet

leethree · 15th September 2009, 10:38 PM

This is one of two fuses from a Gallien-Krueger 410 RBH Bass Speaker Cabinet (8ohms), and its obviously blown. I have gone to local electronics stores and guitar stores and nobody has been able to identify this fuse. Can anyone help me? It's a 12V15W.

Iain McNeill · 16th September 2009, 02:28 AM

That looks like the old bayonet lamp used for interior lamps in classic British cars. Try your local auto parts store.

12V15W is spot on for an interior lamp.

BTW, get 2 or maybe 3 because more likely than not, when you replace the "fuse" and turn it back on you'll blow another indicating that there's a more deep rooted cause.

I've worked a few G-K amps and they gave me grief - partly because it's so hard to get schematics.

Enzo · 16th September 2009, 03:29 AM

In the past three days, I have emailed G-K for schematics for three products. They have immediately responded with them.

And I agree with Iain, that is not a fuse, it is a light bulb. 12 volt 15 watt bulb. Bulbs are common in crossovers, used as current limiters.

IN speakers, the bulbs usually blow from too much signal through the device they protect, or they fail mechanically from vibration.

leethree · 16th September 2009, 11:28 PM

Thanks for the response. It's just an unpowered cabinet, not an amp, but I will definitely get extra as it sounds I may have more problems than I thought. Thanks for advice about the crossovers, it's making a little more sense to me now. I'll email GK for schematics also.

Cal Weldon · 16th September 2009, 11:37 PM

I was about to reply with "that's not a fuse that's a lamp for your car interior" but I see the esteemed gentlemen got there ahead of me. Darn, I thought I might actually be able to answer someone's question.

Iain McNeill · 17th September 2009, 03:30 AM

Thanks for the update Enzo,
I'll admit my experience with GK is from the last millenium

Good to hear they're supporting their customers now.

Black Gate · 19th September 2009, 03:57 PM

Yes, it's definitely a festoon type light globe readily available at auto accessory stores. I've seen similar lamps in Bose sub-woofer boxes as well.

Iain McNeill · 19th September 2009, 04:22 PM

festoon
that's the word, not bayonet. Not that you use either of them in everyday conversation much

16th September 2009, 11:37 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I was about to reply with "that's not a fuse that's a lamp for your car interior" but I see the esteemed gentlemen got there ahead of me. Darn, I thought I might actually be able to answer someone's question. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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16th September 2009, 02:28 AM	#2
Iain McNeill diyAudio Moderator Emeritus Join Date: Oct 2007 Location: Santa Cruz, California	That looks like the old bayonet lamp used for interior lamps in classic British cars. Try your local auto parts store. 12V15W is spot on for an interior lamp. BTW, get 2 or maybe 3 because more likely than not, when you replace the "fuse" and turn it back on you'll blow another indicating that there's a more deep rooted cause. I've worked a few G-K amps and they gave me grief - partly because it's so hard to get schematics.

16th September 2009, 03:29 AM	#3
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	In the past three days, I have emailed G-K for schematics for three products. They have immediately responded with them. And I agree with Iain, that is not a fuse, it is a light bulb. 12 volt 15 watt bulb. Bulbs are common in crossovers, used as current limiters. IN speakers, the bulbs usually blow from too much signal through the device they protect, or they fail mechanically from vibration.

16th September 2009, 11:28 PM	#4
leethree diyAudio Member Join Date: Sep 2009	Thanks for the response. It's just an unpowered cabinet, not an amp, but I will definitely get extra as it sounds I may have more problems than I thought. Thanks for advice about the crossovers, it's making a little more sense to me now. I'll email GK for schematics also.

17th September 2009, 03:30 AM	#6
Iain McNeill diyAudio Moderator Emeritus Join Date: Oct 2007 Location: Santa Cruz, California	Thanks for the update Enzo, I'll admit my experience with GK is from the last millenium Good to hear they're supporting their customers now.

19th September 2009, 03:57 PM	#7
Black Gate diyAudio Member Join Date: Aug 2009 Location: Adelaide	Yes, it's definitely a festoon type light globe readily available at auto accessory stores. I've seen similar lamps in Bose sub-woofer boxes as well.

19th September 2009, 04:22 PM	#8
Iain McNeill diyAudio Moderator Emeritus Join Date: Oct 2007 Location: Santa Cruz, California	festoon that's the word, not bayonet. Not that you use either of them in everyday conversation much