For pics: check my blog or instagram

I got another one in. I noticed my old schematic was removed or the link died. So here is the schematic: Hot Tubes EH3075B 1980.JPG This unit is the EH3075B version; what should be the EH3075 version? Pic of my unit are on my blog / see my sig I'd say the 20k resistor for U1B should go to Vbias aft...

Lukasen wrote: ↑09 Dec 2023, 22:52 Thanks for the schematics.
I'll just add for lifelong beginners (like me): I think the second opamp has reversed input markings.

WOOPS!

Tnx!

I got another one in. I noticed my old schematic was removed or the link died.

So here is the schematic:
This unit is the EH3075B version; what should be the EH3075 version?

Pic of my unit are on my blog / see my sig

All measurements in the case and with all controls to full

Manfred wrote: ↑04 Nov 2023, 09:28 Thanks for sharing.
Can you please measure the following voltage values.
At the base of Q1.
At the emitter of Q2
At the connection point between R4 and R7.

I'll measure it tonight

I got this pedal and LOVE it!!

Great fuzz face-ish sounds with two 2N404 transistors
For pics check my Blog / Instagram

Hi all!

I got a unit in for some TLC

Yep, I traced it....... But I don't want to post it....... simply because I get pedals to get them reviewed for some magazines I work for. And I want to keep that 'line' to the manufacturers to send me new stuff. I'll post some gutshots! I know this is a decade old, but do you happen to still have ...

Wow, I build that schematic in 2007

Got another one in; small part change, but overall the same pedal

I just got two in for some repairs; both had the input FET damaged and therefor produced no sounds anymore The units were easily fixed. One was the Rev C version w/ chrome knobs (1st edition) The second one was a Rev E version w/ black knobs The input section was altered in the Rev E for trying to g...

I didn't know this pedal. I've got one in as it didn't work and forgot to check FSB. So I traced this unit..... it is the same as the schematics on this thread. Main problem was the dc jack (centre positive), the switch, the soldering of the pots and that known issue with the 3k9 resistors. And yes,...

I got a UE400 in for some issues; those issues were dirty position switches that after a cleaning were functioning properly This unit got the distortion section. I couldn't find any schematics anywhere, so I traced it. As you can spot the TA7136 chip is prominent in this unit. EnjoY! Distortion.JPG ...

Hi all! I just got this unit in as the owner needed to know if it could run on a 'normal' voltage instead of the 15V 400mA centre positive power adapter. The unit has a single 12AX7 tube 'The Eden Glowplug Bass Tube Warmer Pedal makes achieving an authentic tube tone a breeze. Leveraging tone circui...

Hi all! I got one in with a broken delay knob. Pics are on my instagram page (see sig) I only traced the schematic that I found interesting. - The Delay part is a copy of the Danelectro Dan-Echo with a PT2395 IC w/ some mods - The Chorus part is a copy of the Ibanez SC10 pedal w/ some mods EnjoY! Vi...

Hi all!

Just got this wah for cheap as the switch was dead.

Inside is a nice wah pedal! I replaced the switch with a qualitu TPDT, now it rocks!

(pics are on my instagram)

I needed an expression pedal and boy, this one is cheap!

Thanks for the reply my friend. Yes I referring to the clipping in the boost section. D7/D8 and D9/D10… I just don’t really hear any difference. So I should swap the the orientation to of 7 and 8 to match 9 and 10? I'd guess that swapping D7 OR D8 will make it sound like the real deal Any other con...

dmc777 wrote: ↑06 Nov 2022, 04:44
Thanks for the reply my friend. Yes I referring to the clipping in the boost section. D7/D8 and D9/D10… I just don’t really hear any difference. So I should swap the the orientation to of 7 and 8 to match 9 and 10?

I'd guess that swapping D7 OR D8 will make it sound like the real deal

Hi all! I got this pedal in a trade and I really enjoy it! It is in fact a copy of the Lovepedal Amp Eleven (minus some parts) There is also a deluxe version of this unit, the 'Deluxe preamp'; this pedal has three extra switches installed to control the clipping of the booster and the clipping of t...