mdf speaker rings

[coolcat]

Originally Posted by awvc1

nice to know I've managed to help someone along the way

Do you sell bass blockers Jeff, and would you recommend any particular ones on the stock HK setup if at all, or is your preferred option well configured crossovers?

I see the hk tweeter has its own 'passive' protection with a capacitor on the back, but at the moment the door speakers are receiving full range without bass blockers, and I know many have complained about that with hk setups. Bass blockers are the best route in this case right? Or should I look to putting in a proper crossover if I can find one cheap? If it gets too much the obvious answer becomes a set of hertz dsk's as they have a crossover built in, but i'm thinking about the rear doors and how they will behave too

I've got passive crossovers here if you want to experiment as well as bass blocking capacitors .
All the component speakers we sell come with passive crossovers as standard .

I cant say how well they will function with the HK speakers as I haven't tried them , others may have an answer

[awvc1]

Thanks we can sort it out when I come to you for the amp installation. How much are the crossovers for a pair?

[coolcat]

Originally Posted by awvc1

Thanks we can sort it out when I come to you for the amp installation. How much are the crossovers for a pair?

When I find some.....foc Tony

[awvc1]

what a gent cheers !

[awvc1]

finding a definitive answer on bass blockers and harman kardon speakers is hard. But I'll share what I've learned, for verification from the more knowledgeable types in the hope that it might help someone.

It seems that 80khz is a good point to cut off, otherwise you lose too much. This requires capacitors of the order of 470 micro farads, and they can be fitted inline on the positive wire of the speaker. This solution is used by hk themselves if you look at the back of the tweeter you will see the same thing, just using a 4.7 micro farad capacitor, because you want to filter different frequencies to protect the tweeter. The rationale here is to do the same to the midrange speaker, and choosing an appropriate value to filter the lower frequencies from the midrange speakers, because they can't handle it and just distort.

Using cheap electrolytic ones is a bad idea, the right choice is non polar ( you don't need to worry about polarity of the capacitor), ideally polypropylene.

Bass blockers are not a 'good' solution I'm told, and a true audiophile will probably shudder. This is about cost effective problem solving, and is a compromise I imagine, as they 'throw away' a lot of music and are not that effective I'm told. If Coolcat does find the crossovers he's offered me, I can compare and hopefully I will be able to report back what the best solution is for getting the best out of hk kit in 2015. The idea is simply to cut back on what others report as 'boominess' caused by the full range hitting the door mid range speakers that can't handle the lower frequencies. Then you can leave your sub to do the work, and you can happily crank up the volume a little more.

For reference, these are the type of capacitors you need:

http://www.ebay.co.uk/itm/331689707108

[coolcat]

The mdf rings have arrived here at Clacton Electronics towers

Seem to be well made and boy does the water protection paint stink

Hopefully get round to fitting them sometime in the future when I've got some spare time.

[awvc1]

nice. hopefully mine arrive tomorrow then - I got my sound proofing kit today at least.

I also had the preouts fitted to the bm54 btw - it also has a remote line too so that's one less problem. Once I have the speakers all in and the subwoofer plus shelf fitted properly we are in business for the installation. Will be in touch soon.

[coolcat]

Originally Posted by awvc1

nice. hopefully mine arrive tomorrow then - I got my sound proofing kit today at least.

I also had the preouts fitted to the bm54 btw - it also has a remote line too so that's one less problem. Once I have the speakers all in and the subwoofer plus shelf fitted properly we are in business for the installation. Will be in touch soon.

Speak soon Sir

[Avulon]

And are the rings contoured to fit the doors? you left out that vital piece of information! (Coolcat).

[awvc1]

i was planning on fitting mine on sunday avulon, but unfortunately they haven't turned up yet - since it was 48 hr delivery 3 days ago I am left to conclude there is a problem. Which is annoying since now I can't do my job this weekend!


Still if they ever do turn up, I will report back on whether they are contoured or not