J M Fahey's latest activity
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J M Fahey replied to the thread .68uf presence cap. Help me read this schematic!.In practice all 4 possibilities: * .68uF * .47uF + .1uF * .56uF + .1uF and plain * .47uF end up being the same, because respective... -
J M Fahey replied to the thread Deluxe Reverb Speaker.Maybe because it`s *expensive*magic :( And don`t get me started on *weight* :( But if you can move it around (or have muscular roadies...
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D120. few know the magic
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J M Fahey replied to the thread .68uf presence cap. Help me read this schematic!.Well, if you want to have your cake and eat it, you can add a small unobtrusive toggle switch to the front panel (think a pickup phase...
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J M Fahey reacted to Steppin' Wolfe's post in the thread 16 Ohm Mesa V30 Measure 7.1 Ohms with
Like.
when an 8 ohm speaker is paired with a 16 ohm, the 8 ohm speaker will be worked harder than the 16 ohm. -
8 // 16 = 5.3
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Don't use Elmer's Glue. It's way too stiff and will adversely affect the cone suspension's compliance Just to be clear...PVA comes in...
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J M Fahey replied to the thread Unwanted Harsh Distortion Please help!.To really know first what is happening and then where, you (or your Tech) will need scoping it. Otherwise it´s just guessing.
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J M Fahey replied to the thread .68uf presence cap. Help me read this schematic!.Weird. I suppose you replace the .1uF presence cap by a .68uF one? Not sure I´d like it because it defeats the Presence control effect...
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J M Fahey replied to the thread JBL D120 Clones?.Yes, and VERY good ones. In fact, many in the know chose these because they were still made "like old JBL" while originals had changed...
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J M Fahey replied to the thread Marshall Footswitch alternative?.You might rehouse it since it´s really simple or get the schematic (or "lift" it from your current one and build a clone, again in a...
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J M Fahey replied to the thread Installing Speaker Out Katana Air - Need Help.Chiming in late, better than never ;) 1) as mentioned above,NEVER EVER join 2 amplifier *outputs* together. Guaranteed...
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J M Fahey replied to the thread Old Mustard caps possible problem ..... have a look!!.THAT is an important point,which overshadows lesser or even imagined ones such as Mojo or appearance. Personally don´t much believe the...
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J M Fahey replied to the thread Is this speaker ok to use?.The Glues Direct stuff is the real thing and same as roofing sealant, only thicker. Quite surprised at Dr D´s suggestion because...
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J M Fahey replied to the thread Shocked when touching attenuator, already ruled out the outlets. What’s next?.An OT *is* an inductor, conceptually not different from a car ignition coil or a TV flyback. No big deal if a speaker load is connected...