Author Topic: TBDD-500, TB550A both in stock! (Read 16964 times)

horvitz · « **Reply #40 on:** March 28, 2012, 10:37:58 AM »

Cool, got the order. Thanks! That will ship today. If you end up wanting to do any sort of mod, let me know and I'll help you work out the best way to do it. Then maybe we could put together a bit of a tech note for anyone who wants to do the same in the future.

rhythminmind · « **Reply #41 on:** March 28, 2012, 10:43:30 AM »

Any help would be much appreciated. I have a d-scope at my disposable to test the results. Looks like a resister value change to compensate for the 2.2uA 990c input bias is whats needed. Any suggestion on values?

horvitz · « **Reply #42 on:** March 28, 2012, 11:10:58 AM »

I would suggest that you build it as-is first and just see how it goes. If then you think it needs something, we would probably want to direct a question to JH and see what is recommended. I would imagine that it wouldn't be the first time they have been asked about stuffing a 990 into a 550A.

rob61 · « **Reply #43 on:** March 30, 2012, 09:11:01 AM »

Payment sent for 2 kits.

John Hardy · « **Reply #44 on:** March 30, 2012, 02:42:22 PM »

Quote

A little quick looking shows me a few comments from John Hardy on exactly this topic:

http://www.recordingchannel.com/api-2520-where-can-i-get-some-462619.html#9

I'm not sure where that text attributed to me originated, but it appears that someone put it in a blender before posting it (some type of adverb/adjective adder). A few choice quotes:

Quote

the resistors were in the megaohm blatantly range.

Quote

these resistors would eloquently compensate

Quote

I supernaturally have great respect for

Quote

When factually using a 990

John Hardy
The John Hardy Co.
www.johnhardyco.com

horvitz · « **Reply #45 on:** March 30, 2012, 05:02:52 PM »

Ha. Yeah, I did feel a little weird reading that. A kind of auto-generated spam prose thing going on. I just did a search on Google for the first line there and removed the "blatantly" and came up with this:

http://www.audiobanter.com/archive/index.php/t-10845.html

A little better, I'd say! It seems like that recordingchannel.com topic basically scraped, imported, and spamified most of the thread from audiobanter.com and attributed all the posts to bogus accounts. Very weird. I bet it drives ad impressions nicely.

Brian

John Hardy · « **Reply #46 on:** March 30, 2012, 05:33:57 PM »

Quote

Ha. Yeah, I did feel a little weird reading that. A kind of auto-generated spam prose thing going on. I just did a search on Google for the first line there and removed the "blatantly" and came up with this:

That is much better.

I sent an e-mail to the folks at recordingchannel to ask them what is going on there. There are several messages of mine with the same type of alterations. They either need to correct them, remove them, or make it clear that the content of the messages has been modified without the author's permission.

Thanks.

John Hardy

Winetree · « **Reply #47 on:** April 04, 2012, 07:17:59 PM »

Paid for one kit. Hoping you'll have another in month.

horvitz · « **Reply #48 on:** April 04, 2012, 08:34:37 PM »

Thank you! That will ship in the morning.

Brian

Songguy · « **Reply #49 on:** April 11, 2012, 07:01:49 PM »

Hi Brian,

Would you mind giving a quick recap on the filter switch. Ie what happens when switch is up "filter" vs down position. And why one would choose one position or the other.

Sorry for the super noob question.
Cheers,
Chris

Ps thanks again for all your troubleshooting help.

emrr · « **Reply #50 on:** April 11, 2012, 07:12:06 PM »

have a look in the build thread, there's a response chart for the filter.

horvitz · « **Reply #51 on:** April 12, 2012, 06:43:50 AM »

Also some additional info at the beginning of this thread.

Brian

Winetree · « **Reply #52 on:** April 13, 2012, 02:15:21 AM »

Another child is born. Will test it out monday.
I understand what the filter does graphically
So does this mean when you have all 3 cut and boost pots zeroed out,
by engaging the filter, the whole EQ becomes one bandpass filter?
A quick and easy flick of the switch instead of using the hi and low bands to roll off.

rickc · « **Reply #53 on:** April 13, 2012, 03:25:49 AM »

the bandpass filter has different curve shape than the eq filters in the 550. so although the curves for the bandpass filter stop (looking at the api supplied curves) at -15dB or so, in reality, they keep on going, whereas the low-eq knob, in shelf mode, goes down to the shelf frequency and levels off. The filter switch is like having simultaneous HPF and LPF buttons on a channel strip, and they simultaneously restrict the bandwidth of the input signal. The slope of the curves are also different.

horvitz · « **Reply #54 on:** April 15, 2012, 09:11:35 AM »

Just a quick note that I'll be travelling from 4/17-4/24 so there will be no shipments during that time. Any orders in by about 2pm EST tomorrow I should be able to get out before I leave.

horvitz · « **Reply #55 on:** June 15, 2012, 07:10:58 AM »

A number of you have told me that you'd like to be notified when stock is getting low, and we're officially there! 10 left now, and I have no immediate plans of doing another run since I'm working on something else at the moment. Of course given how erratic sales are, this stock might last two weeks or two months, but I wouldn't wait too much longer if you've been putting it off.

Thanks for all your business everyone!

Brian

gunpoint recording · « **Reply #56 on:** June 19, 2012, 05:34:50 PM »

Quote from: horvitz on June 15, 2012, 07:10:58 AM

10 left now

... 9 left now

horvitz · « **Reply #57 on:** June 19, 2012, 06:11:19 PM »

~~Six~~ Five actually!

frederickalonso · « **Reply #58 on:** June 28, 2012, 01:32:11 PM »

Ordered mine yesterday. Looking forward to publish some pics when soldering.

Thanks mate, always wanted to have a self-builded high end Eq ;-)

horvitz · « **Reply #59 on:** June 28, 2012, 02:37:15 PM »

Thank you for your order! Have fun with the build.

Just three left now!!

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Author Topic: TBDD-500, TB550A both in stock! (Read 16964 times)