Finishing JBL 3way build

[chrapladm]

I have had quite a few ups and downs in the past 8 years. I wont bothger anyone with all that. But I have only now just looked at finishing up my 3way DIY JBL AM7315-95 clone I built. There is a passive tweeter and mid built from JBL spec. I am using a Beyma 15MI100 for the woofer. I coulnt afford at the time to buy the JBL. I was going to sell this three way a few weeks ago. While having others come over for a listening session I remember I had never finished this build. So I decided to keep it.

The tweeter and mid are passive and the bass is supposed to be active. I dont have the amps or active crossover setup to run active yet. So for now I am going to build a L-pad for the tweeter and mid. I have never built a L-pad before and asked for guidance on DiyAudio. A bit slow to get any answers so I wanted to start a thread here.

So far I am going to attenuate the T/M -15db. Then let Audyssey to its thing. As it is the bass is barely noticeable because of the TM sensitivity being so much higher than the 15.

According to the calculator I need a 1.73 resistors. I have found 1.8, 1.67 or 1.5 10 watt.

According to the calculator I need a 6.58ohm. I found 5.6 and 1.2 10 watt.

For the mid I looked at 50watt resistors. Not sure how chassis style resistors sound. Found a 5.6 and a 1ohm 50watt. Needed a 6.58 and 1.73 And only a 1.5 instead of a 1.73.

 

[chrapladm]

I have now ordered my 6.6 resistors and 1.8 10watt resistors for the tweeters. And I ordered a 1+5.6 50w resistor and a 2ohm 50w resistor for the mids.

 

[NBPK402]

Love the build!

 

[chrapladm]

Love the build!

Mutual affair. LOL As I did enjoy your build also.

I have received the tweeter resistors and now just waiting for the mid resistors. Hopefully all resistors will arrive in the next 2 weeks. Works keeping me busy which is a good thing. That way I can afford this hobby.

 

[NBPK402]

Mutual affair. LOL As I did enjoy your build also.

I have received the tweeter resistors and now just waiting for the mid resistors. Hopefully all resistors will arrive in the next 2 weeks. Works keeping me busy which is a good thing. That way I can afford this hobby.

So you are building your own crossovers too? I am contemplating doing that for either my center or my surrounds. Wiring is getting pretty bad, too many amplifiers, and cost...even with my inexpensive Fosi V3 monoblocks.

 

[chrapladm]

So you are building your own crossovers too? I am contemplating doing that for either my center or my surrounds. Wiring is getting pretty bad, too many amplifiers, and cost...even with my inexpensive Fosi V3 monoblocks.

There was a passive XO design for the high and mid published by JBL. Then you were intended to use an active setup for the bass. So that is why I am now building the Lpads and will use it passively for now with low pass at 300hz from mid and Audyssey DSP for now. Probably wont to much else other than that as I would like to start my Synergy which will be active XO. Probably just going to use the Behringer A800 pair of amps to power the mids and highs. Then whatever works for the active XO.

 

[NBPK402]

Sounds great. I have been thinking of just making a very basic crossover and then since it is for surrounds or center...tune it with Dirac and Magic Beans.