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Old 20th November 2002, 05:44 PM   #71
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Default Re: robert

Quote:
Originally posted by reinhard
hello Robert,

Im interrested in the schematic file also.
Can you mail it to email-removed *

Thanks a lot.

Reinhard

* i emailed your address to Robert. We are discouraging the direct posting of emails to minimize spam. dave
Done

Regards
Robert Morin
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Old 20th November 2002, 05:45 PM   #72
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Default Re: Re: don't slam SRPP

Quote:
Originally posted by Brett


I'd be interested in seeing a schematic if you can post it, or alternatively via email.

Cheers
You have mail

Regards
Robert Morin
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Old 20th November 2002, 06:17 PM   #73
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Default Re: Re: Re: don't slam SRPP

And here is Robert's amp for all:

dave
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File Type: gif 6as7srpp.gif (14.9 KB, 1534 views)
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Old 20th November 2002, 07:22 PM   #74
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Default SRPP

Hi,

Robert,

I assume you lifted the heaters of the top half 6080 with respect to groung?

This sure looks like an interesting amp and reminds me of the Philips OTL.

Cheers,
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Old 20th November 2002, 07:36 PM   #75
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Default Re: SRPP

Quote:
Originally posted by fdegrove
Hi,

Robert,

I assume you lifted the heaters of the top half 6080 with respect to groung?

This sure looks like an interesting amp and reminds me of the Philips OTL.

Cheers,
I have all of the heaters running on one filament transformer. The 6as7 can take 300v plus or minus with respect to cathode. So a positive offset of 100v on the heater will keep the top 1/2 of the 6as7 happy along with the 6111.

Also an afterthought.
Either use a softstart B+ or don't power up the amp in a stand by mode ( use the filaments as a soft start) because the 6as7 will have a short life if B+ hits the tubes after filament warm-up.

Regards
Robert Morin
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Old 20th November 2002, 07:43 PM   #76
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Default TRUE

Hi,

Quote:
Also an afterthought.
Quote:
Either use a softstart B+ or don't power up the amp in a stand by mode ( use the filaments as a soft start) because the 6as7 will have a short life if B+ hits the tubes after filament warm-up.
Actually that is valid for any tube,softstart is O.K but putting the out of standby does more damage than good.
Few people are aware of this.

I run monoblocks with 10 // 6AS7G that switched on directly.
It never caused any trouble since 15 years of use.

Cheers,
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