Rocktron - Banshee

Jered · Post by **Jered** » 09 Mar 2010, 04:33

Recently came across this:
http://www.epanorama.rackhost.net/schem ... alkbox.GIF

Bernardduur · Post by **Bernardduur** » 09 Mar 2010, 21:41

Sweet! 5W output to a seperate speaker....... would that be enough?

Nice idea!

stringsthings · Post by **stringsthings** » 05 Jun 2010, 15:17

jered, thanks for posting ! .... i've got one of these and i like it muchly .... i may clone up the preamp circuit in the future

arayita · Post by **arayita** » 06 Jan 2011, 05:24

There are at least one or more errors on the schematic. D6 must to be the other way around

Somebody else could notice another error?

Greetings from Chile

Diego

rs · Post by rs » 08 Jan 2011, 20:28

Hi folks,
here are some guts. Enjoy!!

coldcraft · Post by **coldcraft** » 08 Jan 2011, 23:58

could a workalike be done up using an LM386 variation?

mictester · Post by **mictester** » 09 Jan 2011, 01:49

coldcraft wrote:could a workalike be done up using an LM386 variation?

Yes, but it would be too quiet! My Talk Box has a TDA2030 as the amplifier IC, giving about 15 Watts rms to the little speaker. That's just loud enough for stage use.

arayita · Post by **arayita** » 09 Jan 2011, 04:21

Thank you very very much Mr. rs

Greetings

Diego

skylark44 · Post by **skylark44** » 09 Jan 2011, 06:55

I'd love one...anyone interested in building me one for a few $$$? (I'm too cheap to spend that much, on the "real deal:

).

arayita · Post by **arayita** » 09 Jan 2011, 17:52

skylark44 wrote:I'd love one...anyone interested in building me one for a few $$$? (I'm too cheap to spend that much, on the "real deal: ).

I'm currently traying to clone one of these. I designed a PCB/Layout myself
Probably in one or two weeks I'll post my work

greetings

coldcraft · Post by **coldcraft** » 09 Jan 2011, 19:17

please share when you get there! also, what are you planning to use for the driver?

arayita · Post by **arayita** » 09 Jan 2011, 20:15

coldcraft wrote:please share when you get there! also, what are you planning to use for the driver?

Sure, I'll do...

For the driver, uhm... I bought a "standard" (generic) 8ohm driver (it costs arround USD$14)

PCB/Layout is ready to print. I'm waitting for my parts, they sould arrive tomorrow...

I'll take shots in order to file everything...

Greetings

ryanuk · Post by **ryanuk** » 10 Jan 2011, 17:35

mictester wrote:
coldcraft wrote:could a workalike be done up using an LM386 variation?
Yes, but it would be too quiet! My Talk Box has a TDA2030 as the amplifier IC, giving about 15 Watts rms to the little speaker. That's just loud enough for stage use.

mictester - did you buy or make yours?? Are you willing to share a schem??

ppluis0 · Post by **ppluis0** » 16 Jan 2011, 17:01

There is no need to build a separate amplifier to achieve this effect ...

You can connect the speaker with a proper crossover to the same amplifier speaker output normally used:

Remember thath the "Talk Box effect" is produced at the PA speaker that amplify the microphone you use to modulate the sound coming from the plastic pipe. The talk box is not an effect itself.

Of course will need some plumber pieces to make an adaptation

:

Cheers,
Jose

arayita · Post by **arayita** » 17 Jan 2011, 18:40

ppluis0 wrote:There is no need to build a separate amplifier to achieve this effect ...

You can connect the speaker with a proper crossover to the same amplifier speaker output normally used:

Remember thath the "Talk Box effect" is produced at the PA speaker that amplify the microphone you use to modulate the sound coming from the plastic pipe. The talk box is not an effect itself.

Of course will need some plumber pieces to make an adaptation :

Cheers,
Jose

Right, but what if you want to use it as a stomp box in your pedal chain?

in that case Banshee is ideal...

skylark44 · Post by **skylark44** » 18 Jan 2011, 03:08

arayita wrote:
skylark44 wrote:I'd love one...anyone interested in building me one for a few $$$? (I'm too cheap to spend that much, on the "real deal: ).
I'm currently traying to clone one of these. I designed a PCB/Layout myself
Probably in one or two weeks I'll post my work

greetings

Great...let me know when it's done, good luck

.

arayita · Post by **arayita** » 24 Jan 2011, 17:51

Hi there!

Last night I finishied my PCB prototype, and....

It wooooorks!

My banshee clone sounds pretty good, and it's really loud (take into account that TDA2614 gives just 5W)

I have noticed an error with bypass system. I'm using a relay as in the original, but when effect is "off" a small signal from the guitar leaks on speaker driver

I'm trying to solve this problem...

Ah, by the way, where have I post my final work?

Greetings

batteryacidtea · Post by **batteryacidtea** » 24 Jan 2011, 18:53

Congratulations! Please post pictures. About the layout and schematic files, you can atach the files directly on the board, or upload it in 4shared or something like that and post the link here.

arayita · Post by **arayita** » 24 Jan 2011, 22:04

I made some changes to bypass system and it works 100% ok!

I'll post some guts later

greetings

arayita · Post by **arayita** » 09 Feb 2011, 05:47

Here we go... My updated Schematic

I corrected D6 position. I made some little changes to switching circuit. When I finished my first prototype, I had some problems when effect was "off", so I decided to use a little trick with TDA2614. If you connect preamp out to pin2 (mute) IC is automatically bypassed, then we have no noises from speaker driver. These are the changes that I made to original schematic.

Enjoy it, it's 100% verified!

PS: Coming soon... my banshee talkbox clone review + PCB/Layout for my friends of FSB!

Rocktron - Banshee [schematic]