It's actually a fuse from a rx11 drum machine, sorry I forgot to provide exact info.
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In my schematics and service manual:
F1 - European model T 0.5 A/250 V, USA, Canadian, Japanese 0.5 A (without type, but probably F = Fast)
F2 - 2 A (without type, probably F)
F3, F4 - 0.75 A (without type, probably F)
Parts list shows also these fuses without details where they should be: 0.7 A for Japanese model, and T 250 mA for German model with Serial Numbers less than 2478, T 500 mA for German model with Serial Numbers more than 3311… There are also mentioned fuses T 800 mA and T 2A.
It seems to me strange that for different primary voltage there’s the same fuse value. It should be different for 100/120 or 220/240 Volt.
Daniel Forró
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On Nov 7, 2023, at 18:22, Florian Anwander <fanwander@...> wrote:
Hello Valeri
The brand of the fuse does not matter. Any fuse with the same values and measures will do it.
And btw: the DX7 does not use a 5A fuse. The service manual says:
0.5A for the fuse on the primary side of the transformer
on the secondary side of the transformer:
0.75A for the two 15V lines
2A for the 5V line.
Best regards
Florian
Am 07.11.23 um 03:43 schrieb googdyamaha:
HI GUYS.
Finding Glass Fuse Substitutes，(Do you know what brand of fuse this triangle symbol is?)
Sorry for the poor English.
FKD 250V 0.5A and FKD 250V 5A, 6＊30mm
<PXL_20231107_005755721~2.jpg><PXL_20231107_024057678~2.jpg>
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Hello Valeri
The brand of the fuse does not matter. Any fuse with the same
values and measures will do it.
And btw: the DX7 does not use a 5A fuse. The service manual says:
0.5A for the fuse on the primary side of the transformer
on the secondary side of the transformer:
0.75A for the two 15V lines
2A for the 5V line.
Best regards
Florian
Am 07.11.23 um 03:43 schrieb googdyamaha:
toggle quoted message
Show quoted text
HI GUYS.
Finding Glass Fuse Substitutes，(Do you know what brand of fuse
this triangle symbol is?)
Sorry for the poor English.
FKD 250V 0.5A and FKD 250V 5A, 6＊30mm
 
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HI GUYS. Finding Glass Fuse Substitutes，(Do you know what brand of fuse this triangle symbol is?) Sorry for the poor English. FKD 250V 0.5A and FKD 250V 5A, 6＊30mm  
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Hi guys FKD 250V 0.5A glass fuse Can a substitute be found? Thank you all.  
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That's either the Anatek box or a close design to it. Anatek also made a bright red box that added power to a MIDI line to feed their boxes if someone had several of them in a single line. MIDI Solutions might have something like that as well.
I still use their Pocket Thru and Pocket Merge boxes, and for a while I had a Pocket Pedal too, which was way nice. I wish they had a Pocket Pot or Pocket Fader in their line.
Nicole
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-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Bruce Wahler via groups.io Sent: Thursday, March 16, 2023 8:09 AM To: [email protected]; templarser@... Subject: Re: [YamahaDX] Breath Controllers MIDI Solutions makes an adapter box called um, the Breath Controller (!) that will accept a BC1-BC3 adapter and produce CC2 -- or any other CC, if the user prefers. It gets power from the MIDI cable, which is nice. Unfortunately, it's an older device, and only works reliably with '5V MIDI,' not the 3V ports that most modern music gear have. MIDI Solutions re-designed some of their most popular boxes to accept 3V, but the Breath Controller never made the cut. What's 5V MIDI? Kind of a long story, but the original MIDI standard (1.0) showed a reference circuit that used TTL logic and was powered by 5V. Manufacturers used the exact circuit, or a very close copy, all through the '80s and early '90s. It was possible to siphon off a tiny bit of 5V from the circuit to power circuitry. Later, as electronics moved to lower voltages, manufacturers started to use 3.3V and 3V MIDI designs. Technically, MIDI doesn't need voltage, just enough current to drive an optocoupler, so these circuits work for MIDI transmission, but can't provide power for boxes that were designed for 5V. (Sometimes they kind of work, which is it's own set of problems!) Regards, -BW Bruce Wahler Halfmoon-Switch.com? bw@... <mailto:bw@...> 978.597.7008 On 3/16/2023 8:44 AM, Lee Borrell via groups.io wrote: The dx controllers don't produce cc2 directly. They produce a varying voltage, and the dx makes the cc2 from it. I have two of them. I have my dx11 on ebay with controller. There are other devices making Cc2 but I can't recall the names. Lee On Thu, 16 Mar 2023 at 9:00, walter wood via groups.io <wwood_38478@...> <mailto:wwood_38478@...> wrote:
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Yes, I'm aware of it -- the keyboard makes the CC2 using the breath controller voltages, exactly like how foot controllers and footswitches provide the voltage for whatever they're controlling. Such is the world of peripherals in many cases.
Nicole
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-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Lee Borrell via groups.io Sent: Thursday, March 16, 2023 7:44 AM To: [email protected]Subject: Re: [YamahaDX] Breath Controllers The dx controllers don't produce cc2 directly. They produce a varying voltage, and the dx makes the cc2 from it. I have two of them. I have my dx11 on ebay with controller. There are other devices making Cc2 but I can't recall the names. Lee <> On Thu, 16 Mar 2023 at 9:00, walter wood via groups.io <wwood_38478@...> wrote:
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MIDI Solutions makes an adapter box called um, the Breath Controller
(!) that will accept a BC1-BC3 adapter and produce CC2 -- or any
other CC, if the user prefers.
It gets power from the MIDI cable, which is nice.? Unfortunately,
it's an older device, and only works reliably with '5V MIDI,' not
the 3V ports that most modern music gear have.? MIDI Solutions
re-designed some of their most popular boxes to accept 3V, but the
Breath Controller never made the cut.
What's 5V MIDI?? Kind of a long story, but the original MIDI
standard (1.0) showed a reference circuit that used TTL logic and
was powered by 5V.? Manufacturers used the exact circuit, or a very
close copy, all through the '80s and early '90s.? It was possible to
siphon off a tiny bit of 5V from the circuit to power circuitry.?
Later, as electronics moved to lower voltages, manufacturers started
to use 3.3V and 3V MIDI designs.? Technically, MIDI doesn't need
voltage, just enough current to drive an optocoupler, so these
circuits work for MIDI transmission, but can't provide power for
boxes that were designed for 5V.? (Sometimes they kind of work,
which is it's own set of problems!)
Regards,
-BW
Bruce Wahler
Halfmoon-Switch.com?
bw@...
978.597.7008
?
On 3/16/2023 8:44 AM, Lee Borrell via
groups.io wrote:
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The dx controllers don't produce cc2 directly. They produce a
varying voltage, and the dx makes the cc2 from it. I have two of
them.?
I have my dx11 on ebay with controller.?
There are other devices making Cc2 but I can't recall the
names.?
Lee
On Thu, 16 Mar 2023 at 9:00, walter wood via groups.io
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The dx controllers don't produce cc2 directly. They produce a varying voltage, and the dx makes the cc2 from it. I have two of them.? I have my dx11 on ebay with controller.? There are other devices making Cc2 but I can't recall the names.?
On Thu, 16 Mar 2023 at 9:00, walter wood via groups.io <wwood_38478@...> wrote:
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I have one that I used with a DX-21.?
Walter Wood
Pulaski Tn. 38478
On Wednesday, March 15, 2023 at 07:03:56 PM CDT, Nicole Massey <nyyki@...> wrote:
Hey, folks.
I'm on the hunt for a breath controller. And they're proving to be elusive.
I've found references to the Yamaha BC1 through BC3, though that was a
single link, but they all seem to be both pricey and also discontinued.
Anyone know where I can find one at a decent price? It doesn't have to be
made by Yamaha, it just has to be able to turn an air stream into CC2 and
plug in using a miniphone connection to my DX7IIFD or K2600XE.
It'd also be nice to know if anyone is still making them. I'm working on a
book on MIDI, and I'd like to be able to point my readers in a good
direction to find one should they want to.
Thanks,
Nicole
Sent from my HAL 9000 in transit to Jupiter
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tecontrol.se makes BC3 compatible breath controllers. On Wed, March 15, 2023 5:03 pm, Nicole Massey wrote: Hey, folks.
I'm on the hunt for a breath controller. And they're proving to be
elusive.
I've found references to the Yamaha BC1 through BC3, though that was a
single link, but they all seem to be both pricey and also discontinued.
Anyone know where I can find one at a decent price? It doesn't have to be
made by Yamaha, it just has to be able to turn an air stream into CC2 and
plug in using a miniphone connection to my DX7IIFD or K2600XE.
It'd also be nice to know if anyone is still making them. I'm working on a
book on MIDI, and I'd like to be able to point my readers in a good
direction to find one should they want to.
Thanks,
Nicole
Sent from my HAL 9000 in transit to Jupiter
daved@...
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Hey, folks.
I'm on the hunt for a breath controller. And they're proving to be elusive.
I've found references to the Yamaha BC1 through BC3, though that was a
single link, but they all seem to be both pricey and also discontinued.
Anyone know where I can find one at a decent price? It doesn't have to be
made by Yamaha, it just has to be able to turn an air stream into CC2 and
plug in using a miniphone connection to my DX7IIFD or K2600XE.
It'd also be nice to know if anyone is still making them. I'm working on a
book on MIDI, and I'd like to be able to point my readers in a good
direction to find one should they want to.
Thanks,
Nicole
Sent from my HAL 9000 in transit to Jupiter
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The price of a DX1 in 2023 has less to do with the sound and
performance, and more to do with the fact that very few of them were
made -- 140, according to Wikipedia.? In the same vein, a
mint-condition 1963 Corvette might sell at auction for $500K USD,
even though it's not really all that close to being a
high-performance 'supercar.'
________
I'm an owner of Chipsynth OPS7 and Cherry Audio's GX-80, which
contains the 'last note aftertouch' algorithm.
OPS7 is a great emulation of a first-gen DX synth.? (There was a
small learning curve from my TX802, because a few parameters have
different response curves between the two generations.)? It's
functionally a superset of a DX1/DX5, and has a well designed UI
that in many ways exceeds the DX1's front panel.? If one enables
15-bit DAC support and GM-style volume control the result is
actually audibly superior to the DX1, unless one is looking to clone
every limitation of the original hardware.? It has MIDI, split, and
pan capabilities not available in 1984-85 products, and it's easier
to save and load new banks of sounds.
The poly aftertouch simulation created by Mr. Shoebridge, while not
a perfect imitation of real poly AT, is surprisingly useful in
practice.? I wasn't aware that it was available in standalone
format; I'll have to check it out!
Regards,
-BW
Bruce Wahler
Halfmoon-Switch.com?
bw@...
978.597.7008
?
On 3/5/2023 7:02 AM, Glen Diamond via
groups.io wrote:
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If you want to future-proof your DX
sounds,? I think avoid anything as exotic as a DX1.?? Get a
decent MIDI controller keyboard and install a few instances of
a VST.?? There is a “bit accurate” version of the DX7 Mk1
called Plogue Chipsynth OPS7.?? OPS7 has two engines per
instance (kind of like a DX5) but can only read SYSEX from an
original mk1 DX7.? It sounds identical.?? If you layer a few
OPS7 in a DAW you can emulate TX816 sounds (8 x DX7 Mk1) and
more!?? You cannot do the poly-aftertouch in OPS7 (even if you
had a poly-aftertouch MIDI controller).?? I think that there
is a chap who now works for Cherry Audio (Tim Shoebridge) who
has written a VST utility that emulates “last note aftertouch”
or “first note aftertouch” changes..? but not as functional as
the real DX1 aftertouch.
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This (MIDI channel aftertouch to last note) was already implemented
in Memorymoon "ME80" v2 Yammi CS80 VSTi years ago and works great w/
this plugin.
It?s not invented by Cherry Audio.
I?m a ME80 user AND Cherry Audio customer ...
So,- just saying.
P.
Am 05.03.2023 um 13:02 schrieb Glen
Diamond via groups.io:
?I think that there is a chap who now works
for Cherry Audio (Tim Shoebridge) who has written a VST
utility that emulates “last note aftertouch” or “first note
aftertouch” changes..?
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If you want to future-proof your DX sounds,? I think avoid anything as exotic as a DX1.?? Get a decent MIDI controller keyboard and install a few instances of a VST.?? There is a “bit accurate” version of the DX7 Mk1 called Plogue Chipsynth OPS7.?? OPS7 has two engines per instance (kind of like a DX5) but can only read SYSEX from an original mk1 DX7.? It sounds identical.?? If you layer a few OPS7 in a DAW you can emulate TX816 sounds (8 x DX7 Mk1) and more!?? You cannot do the poly-aftertouch in OPS7 (even if you had a poly-aftertouch MIDI controller).?? I think that there is a chap who now works for Cherry Audio (Tim Shoebridge) who has written a VST utility that emulates “last note aftertouch” or “first note aftertouch” changes..? but not as functional as the real DX1 aftertouch.
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DX1 and DX5 are just only rare collectors items.
According to Yamaha FM technology, there are NO advantages vs. a
DX7mkII(FD).
The DA converters are different, which has impact on sound,- if YOU
consider this to be an "advantage".
Poly AT is a nice feature,- WHEN you can really play a keyboard
instrument and PRACTISED using polyphonic aftertouch.
If you didn?t up to now,- be prepared for a learning curve.
Am 05.03.2023 um 12:12 schrieb Greg
Holwell via groups.io:
Today I noticed a listing of a Yamaha DX1 on Ebay for the
bewildering price of AUD$213,084.39. A two followed by FIVE
zeroes.
Is the polyphonic aftertouch a justification for such a
whopping price?
What other advantages have the DX1 over, say, the DX7IIFD??
Easy editing? You could use the CX5M's DX7 editor cartridge on
the cheap.
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Today I noticed a listing of a Yamaha DX1 on Ebay for the bewildering price of AUD$213,084.39. A two followed by FIVE zeroes.
Is the polyphonic aftertouch a justification for such a whopping price?
What other advantages have the DX1 over, say, the DX7IIFD?? Easy editing? You could use the CX5M's DX7 editor cartridge on the cheap.
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Ok, so it looks you have to give it to a skilled technician.
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On 15.02.23 18:07, googdyamaha wrote: Yes I have tried these methods. But unfortunately I don't know how to use a voltmeter. Thank you all for your kind help.
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Yes I have tried these methods. But unfortunately I don't know how to use a voltmeter. Thank you all for your kind help.
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Lee Borrell