https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/ Guitar Noise Discussion Board en-US Thu, 04 Jun 2026 06:03:21 +0000 wpForo 60 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294125 Wed, 28 May 2008 00:04:52 +0000
http://www.partsexpress.com/webpage.cfm?webpage_id=3&CAT_ID=49&ObjectGroup_ID=279

much easier than putting a speaker in a box and adding a funnel. Works better too!]]> Guitar Repair and Maintenance gnease https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294125 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294099 Tue, 27 May 2008 22:13:29 +0000 gnease has let loose with a torrent of information, & I sit humbly at his feet learning all I can! Hey gnease, know anything about "talkboxes"?!? :wink:]]> Guitar Repair and Maintenance katmetal https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294099 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294087 Tue, 27 May 2008 21:16:36 +0000
In an old thread on Talkbass, someone asking about replacing a tweeter got this reply: fill the hole with automotive body putty, sand it down smooth, paint the repair area black, and you're done. :lol:

Remove most of those small tweeter horns, and the bass will sound the same. And take out the crossover. :wink:


(Sorry for hijacking your thread, katmetal!)]]> Guitar Repair and Maintenance slejhamer https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294087 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294074 Tue, 27 May 2008 19:35:57 +0000
Y'all need to get out more. :wink: It seems the majority of cabs have them. Could be. And when I do venture out once a decade :P , I think WTF -- marketing has been at it again. Most of the cabs you link contain cheapo ceramic tweeter horns that are clearly being added to up the frequency specs for the ad copy (marketing -- everyone's got to have competitive numbers). The Ampeg 1" horn may be the only one of those horns that is really doing anything. That is a mid-high range horn with a 1" magnetic horn driver -- probably on the back of a rectangular horn unit. My protection discussion for tweeters, applies for magnetic horn driver elements, whether tweeter or midrange. I find it really hard to believe there is any need for significant freq response beyond 8 to 10 kHz in a bass amp. That should capture all the pop and slap attacks really well.
And what's the difference between a 1" horn and a tweeter? The 1" refers to the voice coil size in the horn's driver element. This horn is probably capable of 2 kHz to 15 kHz. Depending upon the crossover freq, it's probably being used as a midrange or upper-mid/tweeter.

Horn is a structural type, and can be part of a woofer (folded horn), midrange or tweeter element. It's just the megaphone-like structure that efficiently (and directionally) launches the audio from the driver or motor mounted at it's throat (narrow end). Usually horn tweeters are round, small and a one-piece integrated unit of the horn and horn driver. Good midrange -- often rectangular -- horns have detachable drivers for repair and replacement -- cuz they get fried. Tweeters are small and cheap enough to toss when fried. Horn-type speaker elements are self-contained, and do not need to be mounted in a cabinet. That is done only for convenience and rough time/phase alignment. Midrange horn drives are what some people use to make guitar talkboxes. :wink:
http://www.musiciansfriend.com/product/Epifani-UL210-500-Watt-2X10-Inch-Bass-Cabinet?sku=601047
http://www.musiciansfriend.com/product/Eden-D210XST-2x10-Bass-Cabinet?sku=606167
http://www.musiciansfriend.com/product/Aguilar-GS-112-Single-12-Bass-Speaker-Cabinet?sku=601030
http://www.musiciansfriend.com/product/SWR-Triad-3Way-Bass-Speaker-System?sku=602008
http://www.musiciansfriend.com/product/Ashdown-MAG-410T-4X10-Deep-Bass-Cabinet-with-Tweeter?sku=605032
http://www.musiciansfriend.com/product/Ampeg-SVT410HE-Bass-Enclosure?sku=481741 (1" horn on this one)
http://www.avatarspeakers.com/b212.htm ("The cab uses the new full 12 db mylar crossover network for both the tweeter and bass speaker sections for a more accurate response and for better power handling. There is a tweeter volume control on the back panel.") Again -- for most of these, the manufacturer is playing specsmanship. Remove most of those small tweeter horns, and the bass will sound the same.

Other things:

Mylar in a crossover refers to the capacitor type: reliable, durable and good for high voltage

In a two-way crossover, 12 db (per octave) crossover means one inductor plus one capacitor, or one to two resistors and two capacitors. When the literature says 6 dB (for two-way crossover), it's a fancy way of saying 'one capacitor.'

The crossover distributes the power efficiently to the drivers according to freq, resulting less chance of damage for a "normal, clean" signal, which I think is your point; but a crossover does not protect a lower power rated midrange "or tweeter in a bass cab" from clipping distortion burn out. Crossovers also get fried.]]> Guitar Repair and Maintenance gnease https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/paged/2/#post-294074 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-294024 Tue, 27 May 2008 13:21:57 +0000
Y'all need to get out more. :wink: It seems the majority of cabs have them.

And what's the difference between a 1" horn and a tweeter?

http://www.musiciansfriend.com/product/Epifani-UL210-500-Watt-2X10-Inch-Bass-Cabinet?sku=601047
http://www.musiciansfriend.com/product/Eden-D210XST-2x10-Bass-Cabinet?sku=606167
http://www.musiciansfriend.com/product/Aguilar-GS-112-Single-12-Bass-Speaker-Cabinet?sku=601030
http://www.musiciansfriend.com/product/SWR-Triad-3Way-Bass-Speaker-System?sku=602008
http://www.musiciansfriend.com/product/Ashdown-MAG-410T-4X10-Deep-Bass-Cabinet-with-Tweeter?sku=605032
http://www.musiciansfriend.com/product/Ampeg-SVT410HE-Bass-Enclosure?sku=481741 (1" horn on this one)
http://www.avatarspeakers.com/b212.htm ("The cab uses the new full 12 db mylar crossover network for both the tweeter and bass speaker sections for a more accurate response and for better power handling. There is a tweeter volume control on the back panel.")]]> Guitar Repair and Maintenance slejhamer https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-294024 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293983 Tue, 27 May 2008 08:29:34 +0000
http://www.musiciansfriend.com/product/Acoustic-AB50-1x10-Bass-Combo-Amplifier?sku=481621 :shock:]]> Guitar Repair and Maintenance katmetal https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293983 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293976 Tue, 27 May 2008 05:52:16 +0000 Guitar Repair and Maintenance gnease https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293976 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293971 Tue, 27 May 2008 05:21:59 +0000 Guitar Repair and Maintenance Ricochet https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293971 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293969 Tue, 27 May 2008 04:41:09 +0000
On the same topic, when a bass cab has 200-300-etc watts spec'd for the woofers and a much lower power handling for the horn/tweeter, say 100w, it seems that the crossover is the control point, right? But aren't crossovers made with capacitors and inductors, rather than fuses? Fuses are catastrophic protection elements. Crossover networks are intended to route various freq bands to the right drivers for best performance in normal operation.

Don't believe I've ever seen a tweeter in a bass cab or even an electric guitar cab. Only place I see them used for any good reason is in acoustic guitar (combo) amps and PA systems, as these process signals in the upper end of the audio freq range where a tweeter is actually useful. In those cases, the horn tweeter might be fused if it has a magnetic driver unit. This type tweeter also would require a crossover (yep, cap/ind/res network) to pass appropriate high freq signals to the tweeter, while keeping all that much higher power low frequency energy from reaching the tweeter coil and frying it. But when something in amp chain goes non-linear and clips -- the amount of high freq energy increases greatly right out of the amp as the harmonic content goes up. This will blow right through the tweeter highpass crossover network, and if high enough in power, fry the tweeter. So magnetic tweeters often get fused to protect against this. As tweeters are used in acoustic amps and PAs, high levels of non-linearity are not typical, and there should not be much of this unintended clipping -- unlike a high level distorto electric guitar amp (with no tweeter). Piezo horn tweeters don't usually require either a crossover or a fuse, as they "naturally" contain a highpass filtering characteric due to design and also are very tough compared to magnetic horn tweeters. But the piezos don't sound as good as magnetic tweeters either.]]> Guitar Repair and Maintenance gnease https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293969 https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293965 Tue, 27 May 2008 03:18:13 +0000
On the same topic, when a bass cab has 200-300-etc watts spec'd for the woofers and a much lower power handling for the horn/tweeter, say 100w, it seems that the crossover is the control point, right? But aren't crossovers made with capacitors and inductors, rather than fuses?]]> Guitar Repair and Maintenance slejhamer https://guitarnoise.forum/guitar-repair-and-maintenance/putting-a-fuse-in-a-speaker-cab/#post-293965