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Old 10th February 2016, 05:18 PM   #1
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Join Date: Mar 2006
Location: Kensington, MD
Default Ghent Audio - 250ASP Build - Need Help!

Hi,

I recently bought a couple of the IcePower 250ASP modules and the Ghent Audio Case kit with wiring.

I have been studying the official B&O docs as well as scouring the internet to come up with an assembly wiring plan. Ghent Audio does not supply any documentation.

I believe I have pretty good handle on physical assembly and I think I've got the AC hookup correct but I still have several questions. I would be grateful for anyone that can provide assistance.
  1. AC Selector Jumper P200
    Unlike other IcePower modules I have looked at, the 250ASP has a three pin jumper (P200) that allows the selection of 115v or 230v. Do I need to create a jumper that connects Pin 1 and Pin 2 to select 115v? Currently, the jumper is open and there is no jumper except for a three pin wiring clip that I assume is intended to be hooked up to a voltage switch which I don't need to do. If the jumper is left open will the amp simply not turn on?
  2. RCA XLR Input and Toggle switch wiring
    Ghent Audio supplied a SPDT switch but no wire or wiring diagram. The back panel includes a RCA and XLR input connector. Ghent Audio does supply a wiring loom for the Signal Connector (P2). Pin 9-7 are encapsulated in a grey sheath - Pos, Neg, Gnd. From my research there may be an ideal way to wire the XLR and RCA to the toggle switch and P2 input but I am baffled. I need precise details on how to handle this. Otherwise I may just wire the RCA and leave the toggle switch for a later day.
  3. 12v LED wiring to P1 DC bus
    Ghent Audio provides an LED front panel light and a connector with two unterminated wires. I am proposing connecting the positive wire to Pin 5 (Vcc +12v) of the DC-bus (P1) and Neg wire to either Pin 3 or 1 (PGND)?

Once I answer these questions, I believe I can proceed with the actual soldering and final hookups for this amp.

Thank you so much for any answers anyone can provide.

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Last edited by ctbarker32; Yesterday at 01:54 AM. Reason: photo not loading
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Old Yesterday, 01:13 AM   #2
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I can at least help with the AC selector jumper. Yes you must connect pins 1 and 2 for 115V operation.

If the LED panel light you were supplied was intended for 12v operation, then yes, you are correct on point 3.

I am sure if you email Ghent, he will provide either a diagram or at least written connection that they intended for the case.
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Old Yesterday, 01:48 AM   #3
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Quote:
Originally Posted by around360 View Post
I can at least help with the AC selector jumper. Yes you must connect pins 1 and 2 for 115V operation.

If the LED panel light you were supplied was intended for 12v operation, then yes, you are correct on point 3.

I am sure if you email Ghent, he will provide either a diagram or at least written connection that they intended for the case.
I appreciate your feedback. I already talked to Ghent when I ordered. They were pleasant but offered no information on wiring, assembly, etc. Puzzling but true. Given the relative straight forward nature of this and the fact they make a case kit it is strange that can't offer a barebones wiring guide and or at least some pictures of an assembled unit. I knew this going in but I think I can figure things out. I've built many kits over the years even though I am just a hobbiest.

Again thanks for your input.

-CB
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Old Yesterday, 07:04 PM   #4
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Default A Picture of my kit

Here's a picture of my kit.

-CB
Attached Images
File Type: jpg IMG_20160123_195935.jpg (962.1 KB, 18 views)
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Old Yesterday, 09:54 PM   #5
Nisbeth is offline Nisbeth  Denmark
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Look at the data sheet, p. 3 onwards. http://www.icepower.dk/files/solutio...250aspdata.pdf

If you want both XLR and RCA, connect the XLR to pins 7-9. Connect the RCA to I+ and AGND and wire up the switch to short I- to AGND when the RCA input is used.

If you only want RCA in, connect the center of the RCA til I+ and I- and AGND to the ground.

Otherwise:
- You need the voltage jumper mounted in the correct position before the module turns on. Don't use any wiring (to a voltage switch) here unless you absolutely have to as it might act like an antenna.
- As for the LED, yes +12V and PGND is correct but you probably need to add a suitable resistor as well to bring the voltage down.

/U.
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Old Today, 12:55 AM   #6
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I'm having trouble getting the hang of picture upload. Here is the correct picture I intended to upload for everyone's reference.

-CB
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File Type: jpg IMG_20160209_211926.jpg (979.3 KB, 17 views)
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Old Today, 02:07 AM   #7
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Join Date: Mar 2006
Location: Kensington, MD
Quote:
Originally Posted by Nisbeth View Post
Look at the data sheet, p. 3 onwards. http://www.icepower.dk/files/solutio...250aspdata.pdf

If you want both XLR and RCA, connect the XLR to pins 7-9. Connect the RCA to I+ and AGND and wire up the switch to short I- to AGND when the RCA input is used.

If you only want RCA in, connect the center of the RCA til I+ and I- and AGND to the ground.

Otherwise:
- You need the voltage jumper mounted in the correct position before the module turns on. Don't use any wiring (to a voltage switch) here unless you absolutely have to as it might act like an antenna.
- As for the LED, yes +12V and PGND is correct but you probably need to add a suitable resistor as well to bring the voltage down.

/U.
Okay here is how I interpret you suggestion:

P9 P8 P7 (B&O)
+* -*AG
v* v* v*
P2 P3 P1 (XLR)
+* - (RCA)

Switch (6 pin, 3 Rows)
Middle Pin to XLR P3 (neg)
Bottom Pin to XLR P1 (agnd)
Switch in up position connects middle and bottom rows to select RCA

Thanks.

-CB
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