Single Tube Reverb

[glasman]

Here is a clip I recorded this evening using only the amps reverb (not the Reverb - A - Loop gizmo). Guitar is a rosewood tele, speaker is a 1x12 emi tonker. The reverb was set at about 10:30.


Let me know what you think.

http://glaswerks.com/media/driving.mp3

Gary

[Icetech]

Very nice glasman:) I am using the 1tube reverb in this layout.

http://maximoaudio.com/forum/files/dclo ... ut_310.jpg

Which i believe is based off your design.. if you wouldn't mind i could use some tips or changes to make it a bit smoother.. right now it has more of a smack to it for lack of a better term...

[Normster]

I really like spring reverb when playing live, but I'm not as pleased when playing to backings. It's just too hard to get the guitar to sit in the mix. I think your reverb sounds good, but that backing is so processed it still doesn't quite blend in. I'm becoming a fan of digital reverb and delay added in the loop.

Sheesh, I guess that was totally off topic.

[dogears]

Hi Icetech,

You may want to try adjusting the dwell. Cut the 1M to ground in half and add a 470k on the grid side.

Also..... There are a bunch of circuit things I would try changing. First of all the OD1 and OD2 are reversed on the layout. I hope they are correct in the amp. .01 and 100k on OD1 and the .0047 and 150k on OD2

There is a huge problem I see. The OD2 feeds the OD master through a 150k resistor. The correct pot is a 100k. You have a 1M. You must use a voltage divider or trimmer before the master pot. Try 47k/56k or something like that. Or change the 150k to 220k and hang a 47k to ground. Try it and let me know how you like it!

Also, the treble cap..... You have 500/500 250pf is too thin for the Dumble tone IMO. Try adding a 330pf in parallel to one of the treb caps. I bet something closer to 300pf-320pf will make you smile!

Lastly, try replacing the pre-od network. 220k into 100k trim. I like 180k into 100k fwiw..... Much nicer for the grail Dumble tones IMO.

Try adding .1 or .2uf onto the V1b cathode bypass.

Let us know how it turns out!

Very nice glasman:) I am using the 1tube reverb in this layout.

http://maximoaudio.com/forum/files/dclo ... ut_310.jpg

Which i believe is based off your design.. if you wouldn't mind i could use some tips or changes to make it a bit smoother.. right now it has more of a smack to it for lack of a better term...

[Icetech]

Dog thanks much:) thats actually norms layout i believe... he warned me bout the bypass caps reversed so i got that right:) i will try your ideas this weekend, 2 days off work in a row.. im going to be bored to death:)

[tonelab2]

Very nice clip, I really like the sound.

[glasman]

Thanks guys for the comments. And Norm, you do not know how much I wanted to crank up the AUX sends to add a little reverb and delay during the mixdown to place the guitar a little better. But that would have defeated the purpose of the clip.


Gary

[dogears]

Whoops..... Sorry Gary. I meant to say the clip sounded great!!! Next time, click on the OD as well!

[ElectronAvalanche]

Hi Gary,

nice clip and tasty playing. I think a clip without any accomp music would have made it easier to really appreciate the Reverb though.

I think the 1 tube Reverb is a winner. No need for using up more tubes

Looking forward to a OD clip as well.


Cheers,

Electron

[glasman]

Whoops..... Sorry Gary. I meant to say the clip sounded great!!! Next time, click on the OD as well!

Hey Dog... I was feeling pretty "clean" last night when I recorded that clip.

I will post an OD clip when I return from Europe. Still packing my bags for the trip to Holland.

Gary

[glasman]

Hi Gary,

nice clip and tasty playing. I think a clip without any accomp music would have made it easier to really appreciate the Reverb though.

I think the 1 tube Reverb is a winner. No need for using up more tubes

Looking forward to a OD clip as well.


Cheers,

Electron

Thanks Electron, I am pretty happy with the one tube reverb circuit. It adds just the right amount of depth for a live situation (as Norm commented). But for pure recording I find it better to record dry and place the instrument in the mix using board delay and reverb.

OD will have to wait a couple of weeks. I am off this morning for a work engagement in Eindhoven. My second home

Gary

[Luthierwnc]

Hi Guys;

I spec-ing the parts for a Hybrid A with the one-tube reverb. One question I have is what kind of trannie to use for an 8R tank. The standard Fender transformer calls for a 25k/8R ratio but it is also built for a parallel triode driver. IIRC, half that tube is around 47k.

Would it make sense to scrounge around for a 50k/8R trannie and if so, who might have one?

On a quasi-related note -- does anyone have a digital verb they like in either the passive send/return or the Dumbleator version?

Thanks, Skip

[glasman]

Hi Guys;

I spec-ing the parts for a Hybrid A with the one-tube reverb. One question I have is what kind of trannie to use for an 8R tank. The standard Fender transformer calls for a 25k/8R ratio but it is also built for a parallel triode driver. IIRC, half that tube is around 47k.

Would it make sense to scrounge around for a 50k/8R trannie and if so, who might have one?

On a quasi-related note -- does anyone have a digital verb they like in either the passive send/return or the Dumbleator version?

Thanks, Skip

I have used the standard Fender style tranny with one half of the AX7 and the 8 and 10 ohm accutronics tanks with no problems. I guess you could spec a 50K or even 100K to 8 tranny, but will probably cost more than the rest of the amp.

As far as digi reverbs, my only point of reference is the yamaha REV 100. Ok but not great. Whatever you buy, make sure that the clean path styles in the analog world. The rocktron inteliiflex is a good choice for this style of operation.

Gary

[dobbhill]

Rocktron Intellifex is what I use. I also have a REV100 and a REV500. They are better for PA work, IMHO.
D

[Bob-I]

I haven't had a chance to listen to your clip yet, but I switched my reverb to the one tube in Norm's layout. Sounds far better than the Fender reverb I had, but the biggest improvement was that the amp itself sounds better. It appears that there's less affect on the amps tone.

At first I felt that it was a bit weak so I paralleled 2 tubes to add depth. As it turns out there's plenty without this so I'll be putting it back soon.