70/71 Spec 1987.

Get support and show off your MetroAmp 50 Watt kit builds.

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neikeel
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Re: 70/71 Spec 1987.

Post by neikeel » Mon Apr 15, 2019 8:27 am

axeman wrote:
Mon Apr 15, 2019 1:50 am
Send me the inspection tag so I can initial it.
I have some!
Neil

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Danhalen
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Re: 70/71 Spec 1987.

Post by Danhalen » Thu May 09, 2019 3:05 pm

Wow nice work! Beautiful build!

Roe
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Re: 70/71 Spec 1987.

Post by Roe » Fri May 10, 2019 3:06 am

very nice but 2k2 screen resistors is overkill with 460v. 1k should work. and 10k + 8.2k droppers is a little high with 460v on the plates. 8.2+8.2k is more than sufficient. 8.2+6.8k is better perhaps
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Re: 70/71 Spec 1987.

Post by revolver1 » Sun May 19, 2019 4:03 am

Thanks for the response Roe.

Am I right in thinking the 2.2k screen resistors will add a bit of squish at high volume? Will there be any other effect on the sound?

I think your right about the droppers, I'm going to try taking it down to two 8.2k. I thought it was quite aggressive when I tested it, in a really good way there's a lot to like about it but its not exactly what I was shooting for ie, West Coast mod.

I changed the 4700pf bright cap for a 100pf but I suspect it may not be the culprit.

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