jesuscrisp
Well-known member
I think I misread that but also I don't really see a string of resistors and caps.
Simulcast/Broadcast Silicon Mod?
- Thread starter airvian
- Start date
Sorry - got confused. Easily done for me. I've been looking closer at the schematic and now realise that the"string of resistors and caps" was indeed the diodes and caps for the charge pump. Don't mind me - I can be really thick sometimes!
Time for a ride on my bike to clear my head.
Time for a ride on my bike to clear my head.
Chuck D. Bones
Circuit Wizard
Those little transformers have crap bandwidth and are rolling off some of the top and bottom-end. But I agree, as-designed it's 99% hype.
Hudson missed an opportunity to isolate the secondary from ground so that the Broadcast could also be used to break ground loops.
Hudson missed an opportunity to isolate the secondary from ground so that the Broadcast could also be used to break ground loops.
giovanni
Well-known member
What does the heavy water sound like?
I built a Heavy Water and was totally underwhelmed. But that's ok - most pedals are designed for somebody who is not me, I suspect. I didn't really go for the Hudson at first, but it does have something... As a boost the Broadcast is excellent, whether with the transformer or not. As Chuck suggests I suspect that the transformer is having a slight affect on the bandwidth - maybe it should have more effect because the Broadcast I built without the transformer sounds very similar to the stock form. I wish it rolled off a tad more high end!
The Heavy Water has little to no character of it's own through my setup. Whereas the Broadcast has a kind-of treble boost flavour that I seem to like. Everyone has their own take - maybe on a different day I would have liked the Heavy Water better.
The Heavy Water has little to no character of it's own through my setup. Whereas the Broadcast has a kind-of treble boost flavour that I seem to like. Everyone has their own take - maybe on a different day I would have liked the Heavy Water better.
FWIW I have ordered some 2N4033 transistors. If I can get a similar tone with silicon I will be happy - one less variable. I love the sound of Ge transistors but prefer consistency. And then to address that high end... Daeg's idea of the cap across base and collector of the BC549C works. I'm wondering if increasing the size of C2 might help?
TheHammer1982
Well-known member
The only real gripe I have about my Hudson clone is that the highs are a little overwhelming.
dawson
Well-known member
Bumping this ol' thread:
If one were to build a Simulcast/Duocast circuit without a transformer on the existing PedalPCB board, would they need to install any jumpers on the PCB to bypass the transformer, or just leave a big gaping hole there?
I'm looking at the schematic, but not really understanding how transformers work, I'm unable to form any sort of hypothesis. Thanks for any help!
If one were to build a Simulcast/Duocast circuit without a transformer on the existing PedalPCB board, would they need to install any jumpers on the PCB to bypass the transformer, or just leave a big gaping hole there?
I'm looking at the schematic, but not really understanding how transformers work, I'm unable to form any sort of hypothesis. Thanks for any help!
szukalski
Well-known member
+1 If anyone has improved this then do share!
Chuck D. Bones
Circuit Wizard
On the Simulcast, simply jumper T1-1 to T1-6. T1-1 connects to R14. T1-6 connects to pin-3 of the LEVEL pot.
Same thing with the Duocast.
I have some ideas on how to tame the highs, but have not tried them.
1. Increase C7. Will have the strongest effect at high GAIN settings.
2. Connect a cap from B to C on Q2. Start with 1nF. Too dark - make it smaller. To bright - make it larger.
Same thing with the Duocast.
I have some ideas on how to tame the highs, but have not tried them.
1. Increase C7. Will have the strongest effect at high GAIN settings.
2. Connect a cap from B to C on Q2. Start with 1nF. Too dark - make it smaller. To bright - make it larger.
dawson
Well-known member
TheHammer1982
Well-known member
I picked up a Source Audio EQ2 a few weeks ago and it’s been fantastic. I was easily able to tame the highs on the Duocast with it.
I followed Chuck's advice this time and put a cap across the base and collector of the 2N4033 transistor I have in one of my Broadcast clones - this one doesn't have the transformer yet still sounds wonderful! I used an 820pF MLCC because it was nearly 1nF and it fit better. And it seems to have reduced the highs a perfect amount for how I used the pedal.
Previously I did something similar on Q1 in another Broadcast on Daeg's advice and it worked there too. There are clever people here.
Previously I did something similar on Q1 in another Broadcast on Daeg's advice and it worked there too. There are clever people here.
The resistor colors are somewhat hard(er) to read. It seems like some 560R resistors instead of 5,6 or 56k? Overall it seems close the original with a 2n4033 or similar and Z1643E. I think building the Simulcast with these mods could get me close?
In general I don't really like the bridge tone Ariel is getting in this video. The neck pickup sounds better IMO.
I have 2 guitars setup with this string gauge and this requires more high end than with "normal" strings. That's probably the reason this pedal is behaving more as a treble boost which suits his guitars.
In general I don't really like the bridge tone Ariel is getting in this video. The neck pickup sounds better IMO.
I have 2 guitars setup with this string gauge and this requires more high end than with "normal" strings. That's probably the reason this pedal is behaving more as a treble boost which suits his guitars.
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