Best Of
Re: What's the oldest piece you use regularly?
Carver M400a cube amp from 1982. I bought it 1994 and it's been in service ever since. Only been in the shop once.
honestaquarian
2 ·
Re: What's the oldest piece you use regularly?
Polk SDA 2B's and NAD 7400PE Receiver (just using the power amp section now). Bought them both together in 1989.
Greg
Greg
rhythm
3 ·
Re: The Official Club Polk - Snake River Power Cord Demo
You clearly have more experience with writing reviews than me! Nice!
newbie308
1 ·
Re: BLACKHOLE 5 Damping Material
He's talking about BH5, and any similar products, here:
"Many other products used in this application often suspend a barrier layer sandwiched between foam layers. This can have some isolation benefit, but does little to control enclosure resonances.
This isolation layer is typically used in noise control pads to keep sound, in some frequency ranges, from passing from one side of the barrier to the other. This type of material is typically used in industrial applications to reduce sound produced by noisy machinery. This can have an adverse effect in some loudspeaker designs if used with a heavy coverage as the suspended layer can mass load the woofer to some extent. This can cause a muddiness to the mid-range."
One aspect of BH5 is that it doesn't change the effective enclosure volume, which may be a plus unless you designed for it. If what he says above is true regarding mass loading the motion of the midwoofer cone, it could explain the negative experiences some have had who have tried to use larger than small pieces of BH5.
"Many other products used in this application often suspend a barrier layer sandwiched between foam layers. This can have some isolation benefit, but does little to control enclosure resonances.
This isolation layer is typically used in noise control pads to keep sound, in some frequency ranges, from passing from one side of the barrier to the other. This type of material is typically used in industrial applications to reduce sound produced by noisy machinery. This can have an adverse effect in some loudspeaker designs if used with a heavy coverage as the suspended layer can mass load the woofer to some extent. This can cause a muddiness to the mid-range."
One aspect of BH5 is that it doesn't change the effective enclosure volume, which may be a plus unless you designed for it. If what he says above is true regarding mass loading the motion of the midwoofer cone, it could explain the negative experiences some have had who have tried to use larger than small pieces of BH5.
Gardenstater
2 ·
Re: Projects: what are you all working on?
Purchased a remote cabin and it has been my
major project for a bit.
One of the first jobs, get rid of the trash wood stove that came with it as it was terrible in terms of efficiency and control:
Mid install of the new stove:
Burning hot and efficient:
major project for a bit.
One of the first jobs, get rid of the trash wood stove that came with it as it was terrible in terms of efficiency and control:
Mid install of the new stove:
Burning hot and efficient:
Upstatemax
14 ·
Re: 1000 VA Dreadnought
Ok. Thanks for those pics. I was thinking a 1/4" alloy disk like that on top with a sheet of neoprene in between and non-ferrous stainless bolt.
Will be ringing Avel this week.
Will be ringing Avel this week.
xschop
1 ·
Re: Southwest Audio Fest 2024 - Big D Baby
displayname wrote: »I keep debating between hotels or just taking an Uber out there each day. Even at the cheaper hotels I think an Uber each way is going to be a little more cost effective.
Hotel sounds fun, but it’s hard to justify in my mind when I’m 12 miles from home.
Where do ya live ?
I’m close to SMU …
BK
gyosa
1 ·