Building the 4345/4344

[Ian Mackenzie]

Apparently there is reference area, so at some stage when these drawings can be put into Autocad they could be saved there perhaps.

Go here for more practical information about building the 4345.

http://audioheritage.csdco.com/vbull...=&threadid=952

I will be opening my own home page as a reference of these designs shortly, in the interim if you need assistance send me a Pm.

Here are the remaining drawings, adapted from the 4344 drawings posted earlier.

Ian

[Ian Mackenzie]

More dawings.

[Ian Mackenzie]

This is the front elevation.

[Ian Mackenzie]

Here is the top elevation.

[Ian Mackenzie]

This drawing details the enclosure joints.

[Ian Mackenzie]

Here is detailed side elevation of the bracing.

[Ian Mackenzie]

Here the rear elevation with details of the bracing and boot opening.

Ian

[woodstocksound]

Under Construction

This thread will be dedicated to those members wishing to construct the vintage JBL 4345/4344 Professional Series Studio Monitors.

Over the next few weeks I will document blue prints (in JBL Blue..LOL) and provide a Step by Step Guide to Enclosure and Crossover Network Design & Construction.

Some of you will have already been this route with the 4343 so please your collective wisdom and knowledge is most welcome

Ian Mackenzie.

Rob ,do you know of anyone who would have the drawings for the JBL 4550 BKA cabinet ? Any help would be much appreciated. Thanks... Darryl /Woodstock Sound

[Robh3606]

Hello George

"Then, once that answer is in hand, how do you determine the number and value of resistors to satisfy a given requirement? Let's say the desired power handling capacity is 60 watts, and, as an example, let's take the 15 ohm resistor in Giskard's HF network in post 170. Using 10 watt resistors, I would need six 90 ohm resistors in parallel, correct?"

Yes

"Secondly, I have been researching numerous threads on the forum to learn more about what capacitors to get. What a blackhole topic that is !!! Along the way I have read quite a bit about charge coupled networks being very worth the extra expense. Presuming that would be true in this case, how would these circuits be modified?"

Take a look at the 4343 Crossover Mod Thread. It's simple just double the capacitance and put 2 in series with a 3 Meg Resistor at the junction of the 2 caps.

Hello Darryl

"Rob ,do you know of anyone who would have the drawings for the JBL 4550 BKA cabinet ? Any help would be much appreciated. Thanks... Darryl /Woodstock Sound"

No and I don't see them in the Library. Start a new thread in the Tech Help forum. I think there are people who do have them and this question is going to get lost. Someone will step up if they have them.

Rob

[DaveH]

Under ConstructionThis thread will be dedicated to those members wishing to construct the vintage JBL 4345/4344 Professional Series Studio Monitors.Over the next few weeks I will document blue prints (in JBL Blue..LOL) and provide a Step by Step Guide to Enclosure and Crossover Network Design & Construction.Some of you will have already been this route with the 4343 so please your collective wisdom and knowledge is most welcomeIan Mackenzie.

Hi Ian,I'm looking to build a pair of JBL 4344 clones and found your thread on the forum.How did the your build go and, of course, do you have any plans to share?Thanks

[Earl K]

Some reference reading for you.

Google Search ( for ) JBL Cabinet Plans.

This website does have some most excellent plans for a 4344 on it ( albiet with a modified // better layout )

Depending on the amount of handholding you might need, you may want to employ Ian as a consultant for your project.

[Odd]

I have the drawings.4344

Send a pm with your e-mail.
The file is too large for the forum.