Notice the DMM input stage is an inverting opamp with 100k. Its impedance is a bit on the low side, so it may be something to consider. A higher Z stage may get a brighter sound which is not what your pal is used to.
If you want the DMM pre sound, look at Dirk's schematic
Search found 163 matches
- 12 Dec 2011, 12:52
- Forum: Printed/Published Online Designs
- Topic: DMM booster?
- Replies: 25
- Views: 8146
- 02 Nov 2011, 21:06
- Forum: DIY Projects
- Topic: my new delay, over the top PT2399's
- Replies: 57
- Views: 34108
Re: my new delay, over the top PT2399's
yes... it keeps the time setting from the first 2399 replicated on teh second onefrequencycentral wrote:Thanks! So....Q4 and Q5 form a current mirror, correct?
- 31 Oct 2011, 10:35
- Forum: DIY Projects
- Topic: my new delay, over the top PT2399's
- Replies: 57
- Views: 34108
Re: my new delay, over the top PT2399's
Cool experimetnal sounds there, rasta_maleek The pcb was made to fit a custom box. It has a quite complex offboard wiring, so at this time i'd rather redo it for a double side with pcb mount pots to simplify. It's on my plans to do so, as long as i can get some time. At this time all the units I mad...
- 26 Oct 2011, 22:50
- Forum: DIY Projects
- Topic: my new delay, over the top PT2399's
- Replies: 57
- Views: 34108
Re: my new delay, over the top PT2399's
Once that it has been made a first version, i find now a lot of things to redesign and improve.
I'm planning on doing two derivatives, the fancier one with modulation, and another with only the delay, to keep it simple for 3 knobs, keeping the voicing this one has..
I'm planning on doing two derivatives, the fancier one with modulation, and another with only the delay, to keep it simple for 3 knobs, keeping the voicing this one has..
- 04 Oct 2011, 18:35
- Forum: DIY Projects
- Topic: Bou-Bazz - Needlessly Complex Bazz Fuss
- Replies: 9
- Views: 1889
Re: Bou-Bazz - Needlessly Complex Bazz Fuss
that is totally amateur noobish electronics
you need termperature stabilization, you know, otherwise that would sound awfully off when playing under a 400ºC open venue at Venus, or at the underground clubs around your city, i mean 5000 feet underground
you need termperature stabilization, you know, otherwise that would sound awfully off when playing under a 400ºC open venue at Venus, or at the underground clubs around your city, i mean 5000 feet underground
- 30 Sep 2011, 08:26
- Forum: Electric Guitar/Bass Wiring
- Topic: Dual gang pots, different values per gang?
- Replies: 11
- Views: 5559
Re: Dual gang pots, different values per gang?
you can try to change values in one part of the circuit so both pots are matched
schematic?
schematic?
- 15 Sep 2011, 07:04
- Forum: Boutique Stompboxes dissected...
- Topic: Rocket Pedals - Animal Overdrive [guts] [traced]
- Replies: 30
- Views: 10563
Re: Rocket Pedals - Animal Overdrive [guts] [traced]
uh... why use a jumper on a double sided board?
and 7 vias...
and 7 vias...
- 02 Sep 2011, 23:10
- Forum: Stuff Seen for Sale
- Topic: Klon Centaur degooping service / freedom for diodes
- Replies: 8
- Views: 9878
Re: Klon Centaur degooping service / freedom for diodes
you fool...bajaman wrote:
What a great service you are offering TE
How much would it cost me to get a dc power socket fitted
Or would this ruin the sound of the "special' diodes
bajaman
that would ruin the harmonic synergy feedback from the diodes' impedance curve
- 09 Aug 2011, 11:06
- Forum: Announcements and Forum Rules
- Topic: Important: boutique sections closed... DMCA kicks in.
- Replies: 308
- Views: 167379
Re: Important: boutique sections closed... DMCA kicks in.
again, we can cover the technical details of this stuff in its own thread, as any other circuit, mod, improvement or whatever. there's no need to feed that troll if he doenst want to discuss properly. the point here is that the pedal was marketed with lies, and this forum was bullied with stupid leg...
- 25 Jul 2011, 23:02
- Forum: Announcements and Forum Rules
- Topic: Important: boutique sections closed... DMCA kicks in.
- Replies: 308
- Views: 167379
Re: Important: boutique sections closed... DMCA kicks in.
can we know who is submitting those claims, as for having a "hall of shame" names?
- 18 Jul 2011, 21:46
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: EHX - The Freeze
- Replies: 32
- Views: 31962
Re: Electro-Harmonix: The Freeze (Gut Shots for fun)
this is a non-laching switg, isnt it?
i'd rather replace it with a soft-touch switch
i'd rather replace it with a soft-touch switch
- 14 Jun 2011, 19:33
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: New tap tempo Deluxe Memory Man
- Replies: 29
- Views: 11488
Re: New tap tempo Deluxe Memory Man
explain on that!!gena_p1 wrote: MN3005 reissued in china (as MN3011), and cost $1/pcs for good quantities, just check alibaba.com (i have some proofs or so).
- 14 Jun 2011, 08:33
- Forum: Parts & Tools Sourcing & Trading
- Topic: Sourcing parts for Echo Base in Europe/Denmark
- Replies: 22
- Views: 7742
Re: Sourcing parts for Echo Base in Europe/Denmark
Useful trick with the 7805 - the tab is connected to the centre pin (ground), so if you bend the whole regulator flat to the board, you can use the hole in the 7805 tab to screw the board to the case... ...and use the enclosure as a heat sink if needed but dont rely on it as the only support for th...
- 13 Jun 2011, 09:20
- Forum: Parts & Tools Sourcing & Trading
- Topic: Sourcing parts for Echo Base in Europe/Denmark
- Replies: 22
- Views: 7742
Re: Sourcing parts for Echo Base in Europe/Denmark
7805 are big, they go up to 1A but you donr need that much
try to get a 78L05, they are TO92 package (like a standard transistor)
try to get a 78L05, they are TO92 package (like a standard transistor)
- 09 May 2011, 21:57
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: New tap tempo Deluxe Memory Man
- Replies: 29
- Views: 11488
Re: New tap tempo Deluxe Memory Man
they usually came with 2x3005, or 4x3008 !
- 08 May 2011, 00:34
- Forum: DIY Projects
- Topic: Compression Sustainer
- Replies: 143
- Views: 24967
Re: Compression Sustainer
I was thinking:
Change the fet to a pFET, (also reverse diode and cap) so envelope is positive above ground. then bias the FET gate to get it near its Vgs threshold.
Change the fet to a pFET, (also reverse diode and cap) so envelope is positive above ground. then bias the FET gate to get it near its Vgs threshold.
- 18 Apr 2011, 19:46
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: EHX - Deluxe Memory Baby
- Replies: 60
- Views: 32484
Re: Deluxe Memory Baby
Dirk, could you expand a little bit on the relationship between the compander and DC output a bit more? My thoughts have always been "just run it at the highest voltage it will tolerate". How did you go about changing it in relation to the different biasing voltage? look at the datashhets...
- 15 Mar 2011, 06:54
- Forum: DIY Projects
- Topic: Electronic Bypass
- Replies: 42
- Views: 7304
Re: Electronic Bypass
why AC couple the switches from the buffers (those two 47n caps) ?
both sides are biased at 1/2 V...
both sides are biased at 1/2 V...
- 14 Mar 2011, 15:02
- Forum: DIY Projects
- Topic: Soul Sonic - Crackle NOT Okay! [documentation]
- Replies: 199
- Views: 51226
Re: Soul Sonic - Crackle NOT Okay! [documentation]
i have 2N7000's that are noisy, and other are pretty quiet.
the same way i have found some BS170 to be noisy too
i think it depends on the manufactures, i had even different batches from Fairchild with very different noise levels (at least when used in this kind of circuits)
the same way i have found some BS170 to be noisy too
i think it depends on the manufactures, i had even different batches from Fairchild with very different noise levels (at least when used in this kind of circuits)
- 13 Mar 2011, 22:44
- Forum: DIY Projects
- Topic: DirtBag Delay ~ Deluxe Memory Man
- Replies: 364
- Views: 75862
Re: DirtBag Delay ~ Deluxe Memory Man
Right now it isn't passing delay, but I hope to fix that up soon. did it finally work? i always thought that R45 and R48 (in your schem at page 1) were drawn wrong, around IC2B. That looks like a typical inverting mp, R45 should go to the opamp input, not before the other 100k. That stage should se...