DP-1 Distortion (Attack on Behringer)

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analogguru
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Post by analogguru »

Here is the first attack (from the chinese ?) on Behringer´s low-cost prices:

New-Distortion-Sound-Effect-pedal-for-Electric-Guitars

A distortion unit for about $ 20,-- with belt-clip AND 3m guitar-cable. :!: :shock:

I need to see some guts... hope the case is not glued together.... maybe the case, jacks pots and knobs are usable for something better? A replacement board maybe ?

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Post by jg »

analogguru wrote:Here is the first attack (from the chinese ?) on Behringer´s low-cost prices:

New-Distortion-Sound-Effect-pedal-for-Electric-Guitars_W

A distortion unit for about $ 20,-- with belt-clip AND 3m guitar-cable. :!: :shock:

I need to see some guts... hope the case is not glued together.... maybe the case, jacks pots and knobs are usable for something better? A replacement board maybe ?

analogguru
Looks to me the case is ultrasonic welded together. You are gonig to have to break out the xacto knife to open that one.
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Post by modman »

http://www.rino88.net/index.php?act=vie ... oductId=26

on the website: £3 more than on fleabay -- :shock: because they don't have to pay ebay fees? I ordered mine right away. Feel like posting in the TGP "Whatchagotinthemailcoming" thread :D
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Post by goaltoday »

:lol: :lol: Love the belt-clip. :lol: :lol:
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modman
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Post by modman »

analogguru wrote: I need to see some guts... hope the case is not glued together.... maybe the case, jacks pots and knobs are usable for something better? A replacement board maybe ?
analogguru
5 elco's in the middle of the board are 1uF, the one bottom left 2.2uF, bottom right 47uF. One on the top between the pot I cannot tell.
Pots are 10kB (marked 103B), switch transistor reads (S9015) C331 (BC331?)
Diodes are 1n4148.
OPamp is nicely sanded off, probably because they are factory seconds the manufacturer doesn't want to be associated with?

click for the larger pic

Image Image Image Image
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Post by modman »

Image

here are most of the values, AG.
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analogguru
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Post by analogguru »

Thanks but some things confuse me:

The value of the ceramic cap marked C12 (in reality C2) with 10n (103 or .01) seems to be a little bit high.... maybe it is only 1nF (102 or .001) ?

68n for C9 seems to be also not correct... maybe it is ,68 which would mean 680nF ?

R7 with 8k6.....maybe this should read 6k8 ?

and finally R13 with 21k.... maybe 12k would make more sense ?

please confirm,
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Post by soulsonic »

What does it sound like?
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modman
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Post by modman »

analogguru wrote:Thanks but some things confuse me:

The value of the ceramic cap marked C12 (in reality C2) with 10n (103 or .01) seems to be a little bit high.... maybe it is only 1nF (102 or .001) ?
It is C2, but it really is marked 103, so I concluded it's 10 000 pF = 10 nF
68n for C9 seems to be also not correct... maybe it is ,68 which would mean 680nF ?
C9 the tantalum cap is marked "683"
R7 with 8k6.....maybe this should read 6k8 ?
blue grey red gold = 6k8 of course, sorry
and finally R13 with 21k.... maybe 12k would make more sense ?
It's red brown orange gold. 21k still.

Thanks for taking the time to have a look, AG!
soulsonic wrote: What does it sound like?
Well, if you could tame the treble a bit, it might just sound like a CJOD!
:wink: I'll try to make some clips after the weekend.
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Post by jg »

modman wrote:
and finally R13 with 21k.... maybe 12k would make more sense ?
It's red brown orange gold. 21k still.
'cept 21k is not a standard 5% value. 20k, 24k, 27k are your choices. So what you are seeing as brown might be orange or purple.
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Post by analogguru »

That´s right....

If there is a gold ring than it can´t be 21k...

Here is the background (in german):
http://www.elektronik-kompendium.de/sit ... 109071.htm
Have a look in the table at the row E24.
My personal tip is 27k...


The transistor also can´t be marked S9015 this would be a PNP-type.

I assume it is a S9016 ?

(schematic is nearly finished :wink: )

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Post by modman »

jg wrote:
modman wrote:
and finally R13 with 21k.... maybe 12k would make more sense ?
It's red brown orange gold. 21k still.
'cept 21k is not a standard 5% value. 20k, 24k, 27k are your choices. So what you are seeing as brown might be orange or purple.
Of course, 27k I saw it under better light, it's violet! Thank for the link AG, that's very easy German, luckily.

Transistor is indeed NPN, but 9014!
http://www.datasheetcatalog.com/datashe ... 9014.shtml

I should update the pic sometime...
thanks guys
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Post by gtrwrks »

Dig the mass produced tip to the boutique guys - sanded the text off the IC!
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Post by Entrant_21 »

apologies for reviving an old thread, but has anyone identified the op-amp yet? im considering buying this pedal for modding:) is the schematic done?

thanks:)
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