Something BIG is coming on Black Friday

Doc B. · 37290

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Offline sl-15

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Reply #30 on: January 13, 2016, 04:40:30 PM
That indeed is a very nice layout. Great work and congratulations to another kit. Could you tell me what the resistors are for that connect the speaker output to ground? Thanks.
« Last Edit: January 14, 2016, 04:25:39 AM by sl-15 »

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Offline mcandmar

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Reply #31 on: January 13, 2016, 11:28:46 PM
Nice layout, love the symmetry. I assume the OT-5's the largest output transformers to date?

M.McCandless

Offline Doc B.

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Reply #32 on: January 14, 2016, 05:47:26 AM
Quote from: sl-15 on January 13, 2016, 04:40:30 PM
That indeed is a very nice layout. Great work and congratulations to another kit. Could you tell me what the resistors are for that connect the speaker output to ground? Thanks.

That's something I suggested we experiment with a few years ago and liked. It's a balanced speaker output. Seems to tighten up the bass a bit in some situations.

Quote from: mcandmar on January 13, 2016, 11:28:46 PM
Nice layout, love the symmetry. I assume the OT-5's the largest output transformers to date?

Yes. They new plate chokes and OTs add quite a bit of bass power handing compared to previous models.

Dan "Doc B." Schmalle
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Offline drewh1

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Reply #33 on: January 19, 2016, 07:37:21 PM
Quote from: Caucasian Blackplate on November 28, 2015, 08:33:18 AM
They are level trims for each channel.  They can easily be bypassed, or one could pretty easily install input transformers and change the input jacks to XLR's, but there are so many situations where you want 12-20dB of padding at the input of an amplifier that we have insisted on including them with the stock amp.
Are there any issues with bypassing the trims?  I am not using a pre-amp so likely do not need to pad.  Does it change the input impedence?

thanks
« Last Edit: January 20, 2016, 11:49:21 AM by Caucasian Blackplate »

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Offline Paul Birkeland

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Reply #34 on: January 20, 2016, 11:49:56 AM
Quote from: drewh1 on January 19, 2016, 07:37:21 PM
Are there any issues with bypassing the trims?  I am not using a pre-amp so likely do not need to pad.  Does it change the input impedence?

You can turn them all the way up, which is as effective as bypassing them.

Paul "PB" Birkeland

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