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Old 12th September 2006, 12:39 PM   #21
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Not too sure what you mean when you say line level bass boost.

Do you mean bumping it up before amplification?

If this is the case then I am stuck as I am using an integrated amp. I could always try some GRF type cabs (either corner loaded or the 5 foot tall rectangular ones)

I love the mid & highs the Tannoys provide

Or I could just make cabs optimised for mid frequencies from the driver and add a whumping great sub
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Old 12th September 2006, 04:38 PM   #22
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by JRKO


Not too sure what you mean when you say line level bass boost.

Do you mean bumping it up before amplification?

If this is the case then I am stuck as I am using an integrated amp.

Hi,

In my integrated amplifier I modded the feedback loop
of the power amplifier to boost low bass by up to to 8dB.
Very easy to do.

/sreten.
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Old 12th September 2006, 04:44 PM   #23
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The way you say it makes it sound really easy . . . . for an EE

I really would not be that confident about opening up my amp. First my wife will kill me if i break it, second although I have made some working gainclones I would be worried about making a crappy solder joint and blowing the thing up......it cost me a few pennies.
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Old 12th September 2006, 07:09 PM   #24
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No need to open anything up, just build a little box with a boosting (high q) filter in.
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Old 12th September 2006, 07:26 PM   #25
AKN is online now AKN  Sweden
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Hi!

Those modeling this speaker, isn't a passive filter included with a certain series resistance?
If so, have passive filters been altered? Lower resistance coils?
Q may have been lowered.
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Old 12th September 2006, 07:53 PM   #26
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bubbuuulelbobobllbbobooblllleeeee


Thats the sound of me being out of my depth.....and slipping under the water.

Think no electronics experiance and then subtract an iq of 200
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Old 12th September 2006, 08:05 PM   #27
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I have down loaded a basic version of WinISD and have entered the basic TS specs as posted previously. I cant work out the rest but I am sure as with all things electrical there are calculations to generate the missing info.

I have used what specs I have and I dont seem to be able to make a hige amont of difference whatever I do to the ports or the cabinet. Even a sealed cabinet has almost the same roll off.

What gives (is it just me?)
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Old 12th September 2006, 08:25 PM   #28
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Hi!

Found this response graph:
http://www.hilberink.nl/codehans/tannoy59.htm

30Hz with little EQ should be possible.

Can you post some pics?
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Old 13th September 2006, 09:29 AM   #29
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by 4fun
Hi!

Those modeling this speaker, isn't a passive filter included with a certain series resistance?
If so, have passive filters been altered? Lower resistance coils?
Q may have been lowered.
Hi,

you are correct I didn't include the effects of series resistance
of the crossover coils, which raises the effective Qts of the driver.

See new Qts with series inductor here http://www.mhsoft.nl/spk_calc.asp

Quote:
Originally posted by JRKO
I have down loaded a basic version of WinISD and have entered the basic TS specs as posted previously. I cant work out the rest but I am sure as with all things electrical there are calculations to generate the missing info.

I have used what specs I have and I dont seem to be able to make a huge amont of difference whatever I do to the ports or the cabinet. Even a sealed cabinet has almost the same roll off.

What gives (is it just me?)
Nope, you are not doing anything basically wrong. As stated you
need some form of bass boost. Experimenting with putting a BSC
type circuit between the CD player and its input is a possibility.

With 6dB to 10dB maximum boost depending on room gain
placement etc bass down to 30Hz is certainly possible, and
with two 15"s at reproduction levels you can easily hear.

/sreten.
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