Tannoy rectangular GRF / DC3836?

volkerw · 27th October 2010, 07:06 AM

Hello to all tannoy builders,

will a Tannoy 3836 DC (qes=0.5, qms=2, vas=430l) work in GRF rectangular BLH or is this horn only suitable for the old, low q dual concentrics drivers? Has anyone else tried this?
Many Thanks,
Volker

Charles Darwin · 27th October 2010, 09:45 AM

You could try joining the Tannoy Yahoo group, they might be able to help.

AndrewT · 27th October 2010, 11:47 AM

Hi,
a dual concentric Tannoy with a Qes=0.5? That sounds impossible.

Charles Darwin · 27th October 2010, 12:52 PM

Tannoy states a Qts of 0.427 for the 3836.

AndrewT · 27th October 2010, 01:23 PM

Hi,
what was/is the dc3836 used in?

Charles Darwin · 02:34 PM

It was used in the CPA 15 speaker. It is similar to the 3833 used in the 15DMT and 215DMT I think.

AndrewT · 27th October 2010, 02:43 PM

Hi,
is the CPA 15 a dual concentric?

Charles Darwin · 11:12 PM

There you go:

tannoy

Keep scrolling, the second speaker is the CPA floor monitor and the regular CPA15 is further down.

AndrewT · 28th October 2010, 09:42 AM

That makes some sense.
Tannoy have adjusted the Qts to ~0.4 to allow optimum size vs bass extension in a vented cabinet.

I like the way they specify a suitable amplifier for this 8ohm speaker. Use 300W into 4ohm amplifier. Tannoy obviously realise that current capability means a lot for clean transient reproduction.

Charles Darwin · 28th October 2010, 12:10 PM

Tannoys are famous current hogs, even the fairly efficient 215DMT (101dB @ 2.83V) sound best when driven by a big SS amp with a high DF.

I think the data they give is quite exemplary with dispersion patterns and, the rarest of things, actual distortion figures.
Talking dispersion, that is one of the few differences between their pa type drivers like this one and domestic or studio drivers. The pa ones use a 60deg tweet and the others a 90deg one. If I am not mistaken these drivers could be reconed to 3833 spec by Lockwood Audio.

27th October 2010, 07:06 AM	#1
volkerw diyAudio Member Join Date: Oct 2004	Tannoy rectangular GRF / DC3836? Hello to all tannoy builders, will a Tannoy 3836 DC (qes=0.5, qms=2, vas=430l) work in GRF rectangular BLH or is this horn only suitable for the old, low q dual concentrics drivers? Has anyone else tried this? Many Thanks, Volker

27th October 2010, 11:47 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, a dual concentric Tannoy with a Qes=0.5? That sounds impossible. __________________ regards Andrew T.

27th October 2010, 01:23 PM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, what was/is the dc3836 used in? __________________ regards Andrew T.

27th October 2010, 02:32 PM	#6
Charles Darwin diyAudio Member Join Date: Nov 2009 Location: Birmingham, UK	It was used in the CPA 15 speaker. It is similar to the 3833 used in the 15DMT and 215DMT I think. Last edited by Charles Darwin; 27th October 2010 at 02:34 PM.

27th October 2010, 02:43 PM	#7
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, is the CPA 15 a dual concentric? __________________ regards Andrew T.


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27th October 2010, 09:45 AM	#2
Charles Darwin diyAudio Member Join Date: Nov 2009 Location: Birmingham, UK	You could try joining the Tannoy Yahoo group, they might be able to help.

27th October 2010, 12:52 PM	#4
Charles Darwin diyAudio Member Join Date: Nov 2009 Location: Birmingham, UK	Tannoy states a Qts of 0.427 for the 3836.

27th October 2010, 11:06 PM	#8
Charles Darwin diyAudio Member Join Date: Nov 2009 Location: Birmingham, UK	There you go: tannoy Keep scrolling, the second speaker is the CPA floor monitor and the regular CPA15 is further down. Last edited by Charles Darwin; 27th October 2010 at 11:12 PM.

28th October 2010, 09:42 AM	#9
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	That makes some sense. Tannoy have adjusted the Qts to ~0.4 to allow optimum size vs bass extension in a vented cabinet. I like the way they specify a suitable amplifier for this 8ohm speaker. Use 300W into 4ohm amplifier. Tannoy obviously realise that current capability means a lot for clean transient reproduction. __________________ regards Andrew T.

28th October 2010, 12:10 PM	#10
Charles Darwin diyAudio Member Join Date: Nov 2009 Location: Birmingham, UK	Tannoys are famous current hogs, even the fairly efficient 215DMT (101dB @ 2.83V) sound best when driven by a big SS amp with a high DF. I think the data they give is quite exemplary with dispersion patterns and, the rarest of things, actual distortion figures. Talking dispersion, that is one of the few differences between their pa type drivers like this one and domestic or studio drivers. The pa ones use a 60deg tweet and the others a 90deg one. If I am not mistaken these drivers could be reconed to 3833 spec by Lockwood Audio.

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