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Author Topic: Class 108, first impressions.  (Read 1293 times)

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Offline BobB

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Class 108, first impressions.
« on: March 27, 2017, 12:43:27 pm »
I thought I would try the Farish 108 with sound just to see I f I liked it. Well, yes and no !

The motor control out of the box was wonderful - far better than the other non-sound 108's in my fleet; and the motor and drive chain were very much quieter as well - but then I suppose they had to be be for the sound to be ok. The settings were described as being optimized for the sound but the acceleration and braking c v's were set so high as to make it very difficult to operate on a small out and back such as my main layout. Adjusting them to a compromise position somewhat messed up the sound but at least the model was driveable.

Moving on to the sound, first of all why no volume adjustment ? There is a fade c v which is useful as the train moves off scene but it's activated on c v 18 which can be quite awkward to get at with some controllers or throttles. On balance I would have preferred this c v to be one of the lower numbers but even better would be a volume control - after all if we want Beethoven (included for no apparent reason) a proper recording will knock spots of of the train.

The actual sound seems to be more like the refurbished dmu's. When refurbished they were smoother with less exhaust rattle. So maybe the current sound files suit the blue-grey and later livery examples.

In conclusion, for me it is not to good and I will not get another until the sound is improved and more controllable. Maybe the class 40 will be better but I only saw and heard them a couple of times so I won't really know !

Offline ntpntpntp

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Re: Class 108, first impressions.
« Reply #1 on: March 27, 2017, 01:36:53 pm »
There is a fade c v which is useful as the train moves off scene but it's activated on c v 18 ...


I would very much doubt it's CV18, that's a standard CV and part of the decoder long address.

Do you mean function 18?

I would have thought there'd be a CV to adjust the overall volume,  and most sound decoders these days seems to have CVs to adjust the level of each sound.

What decoder does it come fitted with?  I see the Hornby Magazine video review says it's a Zimo of some kind, they usually have plenty of adjustment capability.

[edit]
It appears to come fitted with a Zimo MX646 from what I've read.
Here's the decoder manual, CV266 sets the overall volume
http://www.zimo.at/web2010/documents/MX-KleineDecoder_E.pdf
[/edit]
« Last Edit: March 27, 2017, 01:59:41 pm by ntpntpntp »
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline BobB

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Re: Class 108, first impressions.
« Reply #2 on: March 27, 2017, 03:25:21 pm »
Hi ntpntpntp

You right, I'm confusing functions and c v's.

The volume control that I desire would be through a couple of low numbered function buttons, one for up and one for down. Can function buttons be re-assigned from the factory settings to do things like that ?

Offline Only Me

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Re: Class 108, first impressions.
« Reply #3 on: March 27, 2017, 03:28:35 pm »
You can recode CV's function keys usages, "IF" the supplier has not locked the chip, BUT those CV's are up in the 400 range and only specialist dcc controllers can work that high... Digitrax PR3, DIGIRAILS V550, zimo sound programmer to name a couple @Steve Purves is the decoder on your Farish 108 locked?
« Last Edit: March 27, 2017, 03:30:44 pm by Only Me »



Offline BobB

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Re: Class 108, first impressions.
« Reply #4 on: March 27, 2017, 03:32:17 pm »
Hi Only Me. I know a few people with a digitrax PR3. Do the instructions say how to do it ?

Offline Only Me

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Re: Class 108, first impressions.
« Reply #5 on: March 27, 2017, 03:39:18 pm »
In a word NO sorry... You need some in-depth knowledge of the high level cv's the decoder full manual from the supplier and a 15vdc psu for the pr3, anything less will give you strange readings when trying to adjust the high level cv's.  Also remember if you move obe you need to put the other somewhere.. some sound configs are also interlaced with the functions eg move one and get a weird result when the locos moving



Offline ntpntpntp

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Re: Class 108, first impressions.
« Reply #6 on: March 27, 2017, 06:02:57 pm »
In that manual I linked to earlier, there's piles of stuff about function mapping, incremental programming and all sorts of things you can do with the Zimo.  Seems that you can map just about anything to anything!

Read VERY carefully and be sure you understand exactly what changes you're making, before you go ahead.   If possible, I'd suggest using some sort of computer-based programmer which can save the current settings before you change anything, so you can restore to the previous state.   I use a SPROG and JMRI for this sort of thing and it's great, but I've never investigated the complexities of something like this Zimo and whether or not JMRI fully supports all the features of the decoder.
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline Rma

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Re: Class 108, first impressions.
« Reply #7 on: June 29, 2017, 09:10:25 am »
Does anyone know if the green body off 371-879 would fit straight onto this new edition? Cheers

Offline Bob G

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Re: Class 108, first impressions.
« Reply #8 on: June 29, 2017, 02:03:52 pm »
Can't see why it should not fit. The early 108s came with spare parts to fit a speaker in any case. But it would be good to check with someone who has both to see if Farish are actually using the spare parts that came with the unfitted DMUs to fit sound in this one.

Bob

Offline Rma

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Re: Class 108, first impressions.
« Reply #9 on: June 29, 2017, 02:26:55 pm »
Thanks Bob

Actually, I've done some more research since this morning and think I'll have a go at fitting sound to my 108. It doesn't sound as tricky as I feared it would be!

Cheers

Offline Roy L S

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Re: Class 108, first impressions.
« Reply #10 on: June 29, 2017, 06:48:37 pm »
Thanks Bob

Actually, I've done some more research since this morning and think I'll have a go at fitting sound to my 108. It doesn't sound as tricky as I feared it would be!

Cheers

It's very straightforward indeed. Plug and play Zimo, two wires to solder to a speaker (I used a Microcube but I understand a Sugarcube would fit) speaker neatly tucked away in a purposely designed recess at the corridor end of the Guard's compartment.

Roy


Offline EtchedPixels

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Re: Class 108, first impressions.
« Reply #11 on: June 29, 2017, 07:33:11 pm »
The actual sound seems to be more like the refurbished dmu's. When refurbished they were smoother with less exhaust rattle. So maybe the current sound files suit the blue-grey and later livery examples.

Useful to know - I'd certainly want the older sound. Growing up around the edge of Brum the rattle of an unrefurb unit (usually one of the other classes though!) accelerating out of a station was a very distinctive sound indeed.
"Knowledge has no value or use for the solitary owner: to be enjoyed it must be communicated" -- Charles Pratt, 1st Earl Camden

Offline Rma

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Re: Class 108, first impressions.
« Reply #12 on: June 29, 2017, 09:29:28 pm »
Thanks Roy

I was looking to use a microcube too. Having seen your post, I've made a little cardboard box the size of the sugarcube and it really does only just squeeze in having also removed the rear glazing (though my cardboard box is probably slightly out) - so I'm a bit concerned about trying with a real speaker!

It would be interesting to know if anyone has managed to fit a sugarcube in?!

Cheers

Offline GroupC

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Re: Class 108, first impressions.
« Reply #13 on: June 30, 2017, 08:35:20 am »
Not being DCC I don't understand most of any of the above posts but any chance of a video with sound of the 108 in action? I have 4 108's and would like to be able to imagine what they sound like. Thanks!

Offline Newportnobby

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Re: Class 108, first impressions.
« Reply #14 on: June 30, 2017, 09:31:03 am »

Pathetic horn as usual but gotta love that zorst burble ;D


 

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