BIB or Bruce 1.1 for AN8

hwong · 24th December 2006, 08:33 PM

I have purchase a pair of AN8 std to get me into the FR DIY world.
I built the cabinet using Commonsense cabinet plan (BR with two 3" holes cutout as port). I am driving them with a Audio Space Kt88 integrated amp.

Just wonderting what cabinet will draw the best out of these drivers. BIB or Bruce 1.1

I am planning to move up to a pair of Fostex (206 or 208) later and hopefully I can reuse the cab.

Scottmoose · 24th December 2006, 08:56 PM

Depends on your room really. They'll sound very different, that's for sure. The BIBs use the room more, and are more position dependant. They'll go lower, though Bruce should still give ~30Hz. Bruce is closer to direct radiation, while the BIB, particularly in the LF, has a real feel of omni and dipole designs.

BTW · 24th December 2006, 11:46 PM

Quote:

Originally posted by Scottmoose
Depends on your room really. They'll sound very different, that's for sure. The BIBs use the room more, and are more position dependant. They'll go lower, though Bruce should still give ~30Hz. Bruce is closer to direct radiation, while the BIB, particularly in the LF, has a real feel of omni and dipole designs.

Hi Scott,

Just a quick question.. I like sealed box type of bass ie tight and well controlled... Which design BIB or Bruce will give a tighter and more well controlled bass.. Thanks in advance.

Scottmoose · 25th December 2006, 09:11 AM

Probably the BIB.

BTW · 25th December 2006, 01:30 PM

Quote:

Originally posted by Scottmoose
Probably the BIB.

Thanks, will probably give the BIB a try for the next spk project..

Scottmoose · 25th December 2006, 01:40 PM

Prepare to discover the true meaning of BASS from FR drivers.

hwong · 26th December 2006, 08:31 PM

Thanks Scott for the feedback.

My room is in the basement and is rectangluar in shape with the listerning chair facing the narrow side. All carpeted. It is about 25' on the long side and 17' on the narrow side but I can only set my chair away from the speaker wall no more than 13' since there are table and chairs in the way beyond that. One side of the 25' is basement wall and the other side at the speaker wall end opens to a hallway.

The ceiling is about 7' high from the front listerning wall (big bulk-head for duct works) for about 10' and then 8.5' high beyond that.

For BIB will 7' ceiling work since I the measurment I have for BIB for the AN8 is about 70" high, that leaves about 1' clearance from the ceiling.

Scottmoose · 26th December 2006, 08:48 PM

That should load it very nicely indeed. Better than a taller ceiling. A bloke who owns a pair of Terry's original 168 BIBs for example has them in an alcove -no problems at all. Terry's description was'it would be too much bass except there's no boom. It's all hard and pulpy bass, and smooth.' Sounds pretty good to me!

hwong · 27th December 2006, 02:51 AM

BIB it will be.

Also remember reading from another thread that you mentioned about using MDF and chip board but can't find it again. So is it MDF for front and sides and chip board for internal baffle and back? Or should I go with ply?

Scottmoose · 27th December 2006, 08:38 AM

I'd use ply for the sides and front baffle, chipboard for the sloping internal and rear baffles.

24th December 2006, 08:33 PM	#1
hwong diyAudio Member Join Date: Oct 2006	BIB or Bruce 1.1 for AN8 I have purchase a pair of AN8 std to get me into the FR DIY world. I built the cabinet using Commonsense cabinet plan (BR with two 3" holes cutout as port). I am driving them with a Audio Space Kt88 integrated amp. Just wonderting what cabinet will draw the best out of these drivers. BIB or Bruce 1.1 I am planning to move up to a pair of Fostex (206 or 208) later and hopefully I can reuse the cab.

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24th December 2006, 08:56 PM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Depends on your room really. They'll sound very different, that's for sure. The BIBs use the room more, and are more position dependant. They'll go lower, though Bruce should still give ~30Hz. Bruce is closer to direct radiation, while the BIB, particularly in the LF, has a real feel of omni and dipole designs.

25th December 2006, 09:11 AM	#4
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Probably the BIB.

25th December 2006, 01:40 PM	#6
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Prepare to discover the true meaning of BASS from FR drivers.

26th December 2006, 08:31 PM	#7
hwong diyAudio Member Join Date: Oct 2006	Thanks Scott for the feedback. My room is in the basement and is rectangluar in shape with the listerning chair facing the narrow side. All carpeted. It is about 25' on the long side and 17' on the narrow side but I can only set my chair away from the speaker wall no more than 13' since there are table and chairs in the way beyond that. One side of the 25' is basement wall and the other side at the speaker wall end opens to a hallway. The ceiling is about 7' high from the front listerning wall (big bulk-head for duct works) for about 10' and then 8.5' high beyond that. For BIB will 7' ceiling work since I the measurment I have for BIB for the AN8 is about 70" high, that leaves about 1' clearance from the ceiling.

26th December 2006, 08:48 PM	#8
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	That should load it very nicely indeed. Better than a taller ceiling. A bloke who owns a pair of Terry's original 168 BIBs for example has them in an alcove -no problems at all. Terry's description was'it would be too much bass except there's no boom. It's all hard and pulpy bass, and smooth.' Sounds pretty good to me!

27th December 2006, 02:51 AM	#9
hwong diyAudio Member Join Date: Oct 2006	BIB it will be. Also remember reading from another thread that you mentioned about using MDF and chip board but can't find it again. So is it MDF for front and sides and chip board for internal baffle and back? Or should I go with ply?

27th December 2006, 08:38 AM	#10
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	I'd use ply for the sides and front baffle, chipboard for the sloping internal and rear baffles.

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