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Post by bluesmama on Jan 21, 2020 0:18:45 GMT -5
My brother just recommended the JHS Little Black Amp Box. He picked one up at under $50. Simply plug into amp effects loop and crank your amp volume. It acts like an attenuator and can deliver that sweet spot tone on your amp at lower volumes. He’s tamed his Blues Deluxe RI and doesn’t change the cranked tone of his Les Paul at lower volumes. He sent me a clip with his amp dimed but playing in his living room with low enough volume to hear the tv. Great tone. Gonna get me one.
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Post by rickyguitar on Jan 22, 2020 1:23:20 GMT -5
Wow, that's pretty cool.
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Post by walshb 🦒 on Jan 22, 2020 6:36:24 GMT -5
I recently tried the 4 cable method with my SC20H JCM800, and I had to turn the volume up way more than usual. After reading this, maybe it's designed that way, but I haven't messed with it after that one time. Now I'll have to experiment. I've also read about other amps that had features like described above, but I don't recall offhand which amps. I'm not thinking about buying any more amps, anyway.
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pdf64
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Posts: 556
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Post by pdf64 on Jan 22, 2020 9:03:46 GMT -5
It’s just a potentiometer in a box. As such it’s kinda expensive. Steve Dalman provided a simple guide to making these on FDP maybe 15 years ago. Various ebayers ranwith that and sold them for maybe $15.
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Peppy
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Guitar gear guru at Milano Music Center
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Post by Peppy on Jan 22, 2020 9:59:59 GMT -5
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 22, 2020 18:53:26 GMT -5
Thanks Peppy! The video doesn’t play but the info is good. i want one!
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 22, 2020 18:55:29 GMT -5
It’s just a potentiometer in a box. As such it’s kinda expensive. Steve Dalman provided a simple guide to making these on FDP maybe 15 years ago. Various ebayers ranwith that and sold them for maybe $15. Thank you for reminding me. I think I still have one that old FDPer, Hank Hill, made for me. I had a hot rod deluxe at the time. I need to dig it out of hiding.
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Post by Leftee on Jan 22, 2020 19:23:38 GMT -5
It’s just a potentiometer in a box. As such it’s kinda expensive. Steve Dalman provided a simple guide to making these on FDP maybe 15 years ago. Various ebayers ranwith that and sold them for maybe $15. I’ve got one floating around that I bought on eBay maybe 15 years ago. I used it with nice results on a Classic 30.
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 22, 2020 19:49:45 GMT -5
Found mine, but it has a push button and not a knob.
At least I hope that’s what it is.
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McCreed
Halfnote
Posts: 76
Formerly Known As: Mick Reid @ FDP
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Post by McCreed on Jan 22, 2020 19:50:37 GMT -5
I'm another member that built one of Steve Dallman's boxes back around 2003. I had a Blues Deluxe at the time. I no longer need one for any of my amps now, but I have made several for various other applications since. When I saw the video, I didn't realise it was the same thing. Seeing the price of them I presumed it must have some whizz-bang electronic circuitry in there! This is the last one I made a few years ago: (and one guts shot)
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 23, 2020 16:49:17 GMT -5
Hey Mick, I’ll try to get a picture of mine posted tomorrow to see if I’ve got the right thing. I had a colonoscopy this morning so I won’t be doing that today.
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McCreed
Halfnote
Posts: 76
Formerly Known As: Mick Reid @ FDP
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Post by McCreed on Jan 23, 2020 17:40:10 GMT -5
TMI!!!! Ryder!
If it has a volume pot wired between two jacks... you've got the "right thing".
That's literally all it is. However I did put a treble bleed cap on the one shown.
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 24, 2020 14:04:18 GMT -5
TMI!!!! Ryder! If it has a volume pot wired between two jacks... you've got the "right thing". That's literally all it is. However I did put a treble bleed cap on the one shown. Mick,TMI? Sorry, it's been 18 years, and I'm 70. Can't remember. See photos, anyone, and let me know what I've got.
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McCreed
Halfnote
Posts: 76
Formerly Known As: Mick Reid @ FDP
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Post by McCreed on Jan 25, 2020 1:45:28 GMT -5
TMI = Too Much Information!
That box you have there isn't like the JHS or mine. It appears to be a some kind of "dummy load" box (or something) that goes in line with the speaker output. I'm guessing that's a big 8 ohm resistor that's wired into that circuit.
Not sure what that one's meant to do, but the boxes in the thread go in & out (between) an FX loop.
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 25, 2020 7:54:04 GMT -5
TMI = Too Much Information! That box you have there isn't like the JHS or mine. It appears to be a some kind of "dummy load" box (or something) that goes in line with the speaker output. I'm guessing that's a big 8 ohm resistor that's wired into that circuit. Not sure what that one's meant to do, but the boxes in the thread go in & out (between) an FX loop. All I can remember, it was supposed to make my hot rod deluxe not so loud when playing at home. When I saw “speaker only” I figured it wasn’t the same.
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Post by walshb 🦒 on Jan 25, 2020 8:24:13 GMT -5
All I can remember, it was supposed to make my hot rod deluxe not so loud when playing at home. When I saw “speaker only” I figured it wasn’t the same. A friend of mine had a HRD, it was way too loud on "2". It makes sense that you'd want to tame it, but that looks more like an "on/off" switch. Maybe for silent recording or using an amp with headphones? Not sure.
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McCreed
Halfnote
Posts: 76
Formerly Known As: Mick Reid @ FDP
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Post by McCreed on Jan 25, 2020 19:06:30 GMT -5
Yes, the footswitch threw me as well. And the 2 speaker output jacks got me scratching my head. Presumably the 1/4" plug goes into the speaker output at the underside of the chassis. That as far as I got...
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Ryder
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Butterscotch Blues
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Post by Ryder on Jan 26, 2020 13:25:41 GMT -5
All I can remember, it was supposed to make my hot rod deluxe not so loud when playing at home. When I saw “speaker only” I figured it wasn’t the same. A friend of mine had a HRD, it was way too loud on "2". It makes sense that you'd want to tame it, but that looks more like an "on/off" switch. Maybe for silent recording or using an amp with headphones? Not sure. I’m sorry I can’t remember. I didn’t do recording or use headphones with it.
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cagey
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My guitar doesn't have the same notes as yours
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Post by cagey on Jan 27, 2020 19:25:47 GMT -5
I built one yesterday with a volume pot I had from a rewired Les Paul and a couple jacks I had laying around. Plugged it into the effects loop on my HRD and, voila! For home use and small gigs I haven't been able to turn up the amp past @2.5 without being too loud. I can now turn the amp volume knob up as far as I want and control the room volume with my new toy. I found the amp sweet spot at @4.5 and can now get that just-breaking-up tone and still have a conversation.
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Post by saltyseadog on Jan 29, 2020 5:46:08 GMT -5
I just bought a master volume box from the link below. Cost me £15 here in the UK and well worth it in my view. At 70 I mostly play at home nowadays and have also suffered from the dreaded "decent tone at bedroom volumes syndrome". As I much prefer the sound of my BJr' with the master on 12 and on stage the volume on 4 -5 I found that at home anything more than 1 on the volume would have the wife saying the neighbours will complain. In the month I have had the VBM I can have the amp master at 12, vol at 4 and get a satisfying bedroom volume sound with the VBM between 9 and 12 o'clock. Best guitar related purchase I have made in a while along with a Snark tuner. www.seanmandrake.com/Products/VBM.aspx
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Ryder
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Post by Ryder on Jan 29, 2020 10:36:49 GMT -5
I just bought a new one on Reverb for $22 including shipping.
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pdf64
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Post by pdf64 on Jan 30, 2020 5:14:39 GMT -5
I built one yesterday with a volume pot I had from a rewired Les Paul and a couple jacks I had laying around.. Guitar pots tend to be 250k - 500k, which is a bit higher than ideal (100k) for this, so I don’t recommend it. But if it works fine for you then great, if it sounds good it is good. The issue being the capacitive load that the cable plugged into the pot output. A cable with a lot of capacitance, combined with a high value pot, will result in the very high end of frequency response being rolled off at mid way settings. Whereas high and low settings retain the full, flat frequency response. Also mid settings will also be more susceptible to hum pick up. To avoid that with a high value pot, a short or high grade instrument type cable should be used on the pot output, being careful to route it away from power transformers. Of course it may be that a slight roll off of high end frequencies (which can make distortion sound harsh) at mid settings is exactly why the box works well for you 😀
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cagey
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My guitar doesn't have the same notes as yours
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Post by cagey on Jan 31, 2020 17:53:09 GMT -5
I built one yesterday with a volume pot I had from a rewired Les Paul and a couple jacks I had laying around.. Guitar pots tend to be 250k - 500k, which is a bit higher than ideal (100k) for this, so I don’t recommend it. But if it works fine for you then great, if it sounds good it is good. The issue being the capacitive load that the cable plugged into the pot output. A cable with a lot of capacitance, combined with a high value pot, will result in the very high end of frequency response being rolled off at mid way settings. Whereas high and low settings retain the full, flat frequency response. Also mid settings will also be more susceptible to hum pick up. To avoid that with a high value pot, a short or high grade instrument type cable should be used on the pot output, being careful to route it away from power transformers. Of course it may be that a slight roll off of high end frequencies (which can make distortion sound harsh) at mid settings is exactly why the box works well for you 😀 I used the 500k pot just 'cuz I had one. I figured I'd try it with the 500k pot and, if it worked, get a 100k pot later. Everything I read about doing this suggested a 100k pot, but no one said why. Now I know. Thanks for the explanation
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McCreed
Halfnote
Posts: 76
Formerly Known As: Mick Reid @ FDP
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Post by McCreed on Feb 1, 2020 19:14:51 GMT -5
I'm quite certain 100k is what I have in my box pictured above.
As you can see, I also put a cap on there as a treble bleed. I don't know if it was completely necessary, but I added it anyway.
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Post by LTB on Feb 4, 2020 23:32:49 GMT -5
TMI!!!! Ryder! If it has a volume pot wired between two jacks... you've got the "right thing". That's literally all it is. However I did put a treble bleed cap on the one shown. Mick,TMI? Sorry, it's been 18 years, and I'm 70. Can't remember. See photos, anyone, and let me know what I've got. Upon inspection It looks to be a ceramic resistor that when the foot switch is engaged it is put in parallel with the speaker, my guess to allow some of the wattage to the speaker to be dropped across the resistor so you can turn it up a little more for overdrive and not have the volume as loud. Personally think the other box you can buy that installs into the EFX loop is more effective. You would only be able to put just a certain amount of wattage before you burn up that resistor (would vary due to the particular resistance value used as to how much.
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Post by FlyonNylon on Mar 29, 2020 21:41:48 GMT -5
I bought one of these after this thread and it's pretty cool. Allows me to get reasonable tone from my blues deluxe in a small studio. Amp still sounds better un-restricted but my ears can't take it in such a small space. I probably still need a Princeton Reverb...
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Post by Stinger22 on Mar 30, 2020 20:25:33 GMT -5
It’s just a potentiometer in a box. As such it’s kinda expensive. Steve Dalman provided a simple guide to making these on FDP maybe 15 years ago. Various ebayers ranwith that and sold them for maybe $15. Yep I made one using Steve's instructions for about $10 to use with a Fender Blues Deluxe Reissue. This is NOT a POWER attenuator which cranks the power tubes for that over driven power tube distortion. It just turns down the preamp. I used it with the FBDR because the master volume was so sensitive that at 1.5 the other players were yelling TURN IT DOWN. It just gave me more range on the master volume control.
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Post by Stinger22 on Mar 30, 2020 20:33:33 GMT -5
I built one yesterday with a volume pot I had from a rewired Les Paul and a couple jacks I had laying around. Plugged it into the effects loop on my HRD and, voila! For home use and small gigs I haven't been able to turn up the amp past @2.5 without being too loud. I can now turn the amp volume knob up as far as I want and control the room volume with my new toy. I found the amp sweet spot at @4.5 and can now get that just-breaking-up tone and still have a conversation. Exactly why I used one with my Blues Deluxe. I played it clean and used pedals so just put it in the Fx loop set the master about 5 and use it as my gig volume control sittin on top of the amp. You could mod either one with a different taper pot on the master and I think Fender later fixed it later editions.
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