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#1
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird
thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? Should I just be looking at changing the sockets to a more normal bulb? ahh so many questions. Thanks In Advance nmm |
#2
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
On 2/2/2011 12:06 AM, nmm wrote:
Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Probably. Is there a number on it at all? You might try looking at the pictures here to see if you can identify at least the base type. You may need to measure the voltage (at the socket) with a voltmeter in order to further identify it. http://tinyurl.com/miniature-lamps -- "Today's production equipment is IT based and cannot be operated without a passing knowledge of computing, although it seems that it can be operated without a passing knowledge of audio." - John Watkinson http://mikeriversaudio.wordpress.com - useful and interesting audio stuff |
#3
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
Mike Rivers wrote:
On 2/2/2011 12:06 AM, nmm wrote: Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Probably. Is there a number on it at all? You might try looking at the pictures here to see if you can identify at least the base type. You may need to measure the voltage (at the socket) with a voltmeter in order to further identify it. http://tinyurl.com/miniature-lamps I know of some small run designs that used Märklin toy train bulbs at below nominal voltage. Kind regards Peter Larsen |
#4
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
On Feb 2, 12:06*am, nmm wrote:
Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? Should I just be looking at changing the sockets to a more normal bulb? ahh so many questions. Thanks In Advance nmm the most commonly used pilot lamp bulb is a push and twist. #47 6.3V Mark |
#5
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AKG BX-20E Light Bulbs
Mark wrote:
On Feb 2, 12:06=A0am, nmm wrote: Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? Should I just be looking at changing the sockets to a more normal bulb? ahh so many questions. Thanks In Advance nmm the most commonly used pilot lamp bulb is a push and twist. #47 6.3V That's a miniature bayonet base. There is also a submini bayonet which is smaller. I seem to remember that the AKG reverb lights were wedge-base ones, but maybe not on the BX-20. How about a photo with a ruler? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#6
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
Mark wrote:
On Feb 2, 12:06 am, nmm wrote: Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? Should I just be looking at changing the sockets to a more normal bulb? ahh so many questions. Thanks In Advance nmm the most commonly used pilot lamp bulb is a push and twist. #47 6.3V Mark If you do decide to "change the sockets", look into LED's. They last many times longer than incandescents in most applications. You may find that someone alredy makes an LED lamp that fits in the same socket as what you have now. |
#7
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
On Feb 1, 10:06*pm, nmm wrote:
Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? OK you youngsters. Looking at the BX20 schematic and after electroshock to recharge my memory, the mains lamp on the power supply is across the mains primary. Memory says that this was a common (in Europe) neon discharge bulb with integral resistor. This was also the case on EMT, Sennheiser and Neumann power supplies. The USA NE2-style had discharge rods, was bare glass with no resistor, but these cute little bayonets had two half-moon discharge plates facing up away from the base and a bit of magnifying glass on the bulb tip for top- viewing. Resistor was in the base--I think. Neon bulbs get gassy over time and fade out. One could cobble a replacement from the existing bulb base, a neon lamp and a resistor. I see the pilot lamp on the remote is fed from 24VDC and that might be had commercially. It may be a wedge bulb like Dolby used in the 361s of the time (remember when Dolby was in the UK?). I actually still have some of those bulbs. |
#8
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
On Thursday, February 3, 2011 at 5:45:47 AM UTC-8, Klay Anderson wrote:
On Feb 1, 10:06Â*pm, nmm wrote: Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? OK you youngsters. Looking at the BX20 schematic and after electroshock to recharge my memory, the mains lamp on the power supply is across the mains primary. Memory says that this was a common (in Europe) neon discharge bulb with integral resistor. This was also the case on EMT, Sennheiser and Neumann power supplies. The USA NE2-style had discharge rods, was bare glass with no resistor, but these cute little bayonets had two half-moon discharge plates facing up away from the base and a bit of magnifying glass on the bulb tip for top- viewing. Resistor was in the base--I think. Neon bulbs get gassy over time and fade out. One could cobble a replacement from the existing bulb base, a neon lamp and a resistor. I see the pilot lamp on the remote is fed from 24VDC and that might be had commercially. It may be a wedge bulb like Dolby used in the 361s of the time (remember when Dolby was in the UK?). I actually still have some of those bulbs. Both bulbs are BA7s base. The 24/28v version is readily available online. The Neon Pilot lamp not so much. I did find a vendor who had a few unmarked BA7s Neons and I got lucky. |
#9
Posted to rec.audio.pro
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AKG BX-20E Light Bulbs
In article ,
wrote: On Thursday, February 3, 2011 at 5:45:47 AM UTC-8, Klay Anderson wrote: On Feb 1, 10:06=C2=A0pm, nmm wrote: Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? =20 =20 OK you youngsters. Looking at the BX20 schematic and after electroshock to recharge my memory, the mains lamp on the power supply is across the mains primary. Memory says that this was a common (in Europe) neon discharge bulb with integral resistor. This was also the case on EMT, Sennheiser and Neumann power supplies. The USA NE2-style had discharge rods, was bare glass with no resistor, but these cute little bayonets had two half-moon discharge plates facing up away from the base and a bit of magnifying glass on the bulb tip for top- viewing. Resistor was in the base--I think. Neon bulbs get gassy over time and fade out. One could cobble a replacement from the existing bulb base, a neon lamp and a resistor. I see the pilot lamp on the remote is fed from 24VDC and that might be had commercially. It may be a wedge bulb like Dolby used in the 361s of the time (remember when Dolby was in the UK?). I actually still have some of those bulbs. Both bulbs are BA7s base. The 24/28v version is readily available online. T= he Neon Pilot lamp not so much. I did find a vendor who had a few unmarked = BA7s Neons and I got lucky. It just happened that I needed some for a mike power supply recently and Grainger had them in stock. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#10
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AKG BX-20E Light Bulbs
On Wednesday, February 2, 2011 at 12:06:59 AM UTC-5, nmm wrote:
Both the bulbs are burnt out on my AKG BX-20E reverb. They are a weird thread, push in and twist, but not the usual style. Believe they are referred to as bayonet base. I'd go LED. Jack Is this something that is still available? Are they some weird Euro-70s thing? Anyone know the name and part number I should be looking for? Should I just be looking at changing the sockets to a more normal bulb? ahh so many questions. Thanks In Advance nmm |
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