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  1. Replies
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    Oh, we got both kinds. We got country *and*...

    Oh, we got both kinds. We got country *and* western.
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    I run my 145's ported in 4.8 cu.ft. boxes tuned...

    I run my 145's ported in 4.8 cu.ft. boxes tuned from 38-57Hz depending on the subs tuning and sub high cut slope I'm using. I run the 145 without low cut and alter the box tuning to match the subs...
  3. Thread: Piano:

    by 89-300ce
    Replies
    13
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    11,021

    Uh-oh, I think I may have found a new...

    Uh-oh,

    I think I may have found a new project. I have some LE14a's in 4.1cu.ft cabinets to supplement my e-145/511b/bms. I alway's thought it would be nice to have the sub's convertible into...
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    I've tried to follow everything you've done with...

    I've tried to follow everything you've done with the M19 filter accross the forums and I thought you generated this at some time. It's what I was going to try.

    Jorg
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    Amp compatibility

    Hello,

    I'm considering splitting my homebrew m1201 crossovers into HF and LF sections and driving my BMS4552NDs with a SET amp of 2-8w or a class A SS amp. I would be driving the LF with a...
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    56,717

    I've been using a model 3 Nitty Gritty for over...

    I've been using a model 3 Nitty Gritty for over 20 years. Works great, but noisy. They seem very durable.

    Jorg
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    I wonder just how much a 3/4" mdf wall would flex...

    I wonder just how much a 3/4" mdf wall would flex on a 14" span. If you support the panels on the long side on saw horses and had a 200 lbs man stand in the centre line , ~7", how much would the...
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    While we're talking LE14's, can this transducer...

    While we're talking LE14's, can this transducer be used in a down firing mode for sub use?

    Thanks

    Jorg
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    I think in the moderate system price range...

    I think in the moderate system price range digital will outperform vinyl.

    Also there is degradation of the vinyl. Play an LP 50 times and then compare it back to back to a fresh one. :crying:
    ...
  10. Thread: Altec 9844-8B

    by 89-300ce
    Replies
    327
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    366,644

    Thanks Earl, I'll try it once I get an RTA...

    Thanks Earl,

    I'll try it once I get an RTA set-up of my own so I can see what I'm doing. I'm curious though. Why do you recommend a 16 ohm lpad? The R1 fixed resistor in the Tpad is/was a 4 ohm...
  11. Thread: Altec 9844-8B

    by 89-300ce
    Replies
    327
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    366,644

    I believe we are talking about the same thing. I...

    I believe we are talking about the same thing. I guess when Altec originaly built the crossovers the 2 gang potentiometers where not available yet or too expensive.

    Jorg
  12. Thread: Altec 9844-8B

    by 89-300ce
    Replies
    327
    Views
    366,644

    Probably a dumb question. Since the R2 resistor...

    Probably a dumb question. Since the R2 resistor in the M19 crossover is variable why wasn't the the 8 ohm side of the Lpad used to replace the preceeding R1 resistor like in conventional Lpad use?
    ...
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    Well I've made some of the changes with some...

    Well I've made some of the changes with some success.

    I moved the R3 pot into an Lpad position at the tweeter to establish the amount of attenuation needed for a fixed Lpad. An additional 12db...
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    Thank you. Jorg

    Thank you.

    Jorg
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    Polystyrene capacitors

    I've just received some polystyrene capacitors to implement in a double by-pass. On these caps one end of the translucent plastic body where one of the leads connects is red like the one marked...
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    Thanks Earl, I'll try that next. ...

    Thanks Earl,

    I'll try that next.

    Jorg
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    A question on the R3 and R5 "Mid" or Horn...

    A question on the R3 and R5 "Mid" or Horn compensation.
    I'd like to get another 3db of cut in this area. If I remove the R5 resistor am I messing up the load impedance. Will removing the R5...
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    I quickly did some crossover test last night. I...

    I quickly did some crossover test last night. I didn't quite match the mic position for measuring from left to right as can be seen by the different levels and response. I do believe I'm going to...
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    That's an excellent idea. I've noticed that...

    That's an excellent idea. I've noticed that speaker placement does have an effect on that dip.

    The R3 pot seems to be primarily for controlling the horn hump, roughly 2KHz-4KHz. I've already...
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    My mistake was letting this thing through the...

    My mistake was letting this thing through the front door. If it where an RTA I would have played with it, gotten it as close as I could, and then consoled myself with the belief that some of the...
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    Yes they are raw cuves. Yes I have tried the...

    Yes they are raw cuves. Yes I have tried the corrections, I'll try to get some out. They are smooth as silk. I'm not sure what it uses. The unit is designed more for plug and play than DIY. If it was...
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    Nuts! I'm stuck between a wall and a wall unit. ...

    Nuts! I'm stuck between a wall and a wall unit.

    It took me a while to figure out that as I move away from the side walls I'm getting closer to the wall unit, which just amplifies the 60Hz...
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    I guess I'm a little slow. What is the correct...

    I guess I'm a little slow. What is the correct orientation of the microphone?

    Jorg
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    That's a pretty good guess. The right speaker is...

    That's a pretty good guess. The right speaker is also about 4 foot from the side wall, but the large opening to the fireplace might make it seem like the wall is further back.

    So, if I can...
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    Yes, the centre of the woofer cone is about 18"...

    Yes, the centre of the woofer cone is about 18" off the ground and about 18" from the wall. I have tried moving them out a bit (6") but didn't see a big change. I can't move them back much. I will...
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