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I think with some analog graphic equalizer models one may APPROXIMATE a similar boost/cut filter EQ.

On the EQ shown the low cut filter is variable from 20hz to 200hz (also has high cut filter...

retnev,

There's not a lot of info about the various 417 versions.

I doubt older Altecs from 70's and 80's would have been made by EV, but from somewhere during the 90's its possible. The...

The lens provide proper sound dispersion in the room, so they are important...

If you cannot find the right JBL lens you may want to look at McCauley Sound they made similar aoustic lens that may...

If you make your own speaker stands and want to assess a desired tilt back angle these tools could be useful.

The first's rotating right side level includes an angle finder. Each line represents...

Trip to Home Depot yesterday for a few things. At the same time i checked pricing on some wood.

It went down for typical construction lumber, e.g. $5.50CA for 2"X4" and $5.00 on 2"X3", treated...

Yup, box air losses, too many people see this as trivial but its not. These negatively affect cab/driver predicted LF performance.

The other cable sets i made recently while it was raining.

Top cable pair: XLR to 1/4" TRS, for Mackie XLR out to Rolls Mosfet amp in 1/4" balanced, this is in addition to or an alternative to the...

enelson,

RE But the calculations that I did for 1 driver in about 5.5 cu feet seem to be promising, even if not ideal. How about this idea?

Well its feasible. A 15" takes .2 cu ft in the box...

RE in this size cabinet.

RE The single 15", ported in this cabinet seems reasonable, if not ideal.

My understanding is the OP is still talking about his 1.9 cu. ft. box net.

I don't see how...

Was rainy recently so it was a good time to make some more cables i haven't had time to do before.

Previously shown here unassembled spring RCA connectors with Canare cable (Page 22, post # 320,...

Hi grumpy,

Thanks for the input. I normally use 20-22 ga in my installations and the cable size/weight remains relatively small which i like. I also have similar type cables but in 18 ga and...

Needed some more solder so went to local electronics store, then saw they had a small roll of installation cable i like left (32 ft), therefore picked it up too, though not in need of this now, but...

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SOME CABLES AND CONNECTORS

Latest trip to dealer i added some more Neutrik connectors to my stock. Heard at the time something that i didn't like, dealer wondering if some connectors might be...

enelson,

i modeled quickly in Winspeakerz the E140 (T/S for K140 are not in the software database, don't have time to add it now) and here's the response curves i got with 4 cu.ft box, lower curve...

enelson,

I'm with Widget post #2 in terms of proper box sizing and tuning, its about the best you can do with K140 VLF wise, i.e. with output and an acceptable response. Note the smallest JBL...

I just checked the LE25-2 factory spec on DCR: 3.6 - 4.4 ohms. So that aspect of yours seems OK.

Vrobec,

Could this be tweeter Ferrofluid leaking? If so then you have a problem with regards to power handling.

I checked quickly in my JBL documents for LE25-2 and could not confirm if it has...

SMALL SIZE POWER AMP SEARCH

Had a draft of this post in the computer for a while. It was intended to be the first Crest amp post, but turns out to be the last....

Before settling for the...

RE post #3

I didn't find the gasket/o-ring part # for 2405 either.

However look at the 2405H tech sheet, bottom left, driver dimensions are given. So this should give you an idea about the...

G.A.,

RE Eager to try out the K130, I have a cabinet I built years ago for an Altec 15. It's pretty big, probably about 10cuft.

This cab size is way too large for a K130. JBL recommended size...

Hi G.A,

Welcome aboard the Lansing Heritage.

This is what i have for the E series 130 and 140 woofers, not the K series though. Such data presumably the same?

"Frame mounting screw drill...